stdreb27
Active Member
http://www.9news.com/news/watercoole...?storyid=72643
Here is an interesting store, of possible assexual reproduction. Or a hybrid.
Here is an interesting store, of possible assexual reproduction. Or a hybrid.
Shark reproduction
- Thread starter stdreb27
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aztec reef
Active Member
Sounds like Bunk to me: well maybe, but i'll try to answer some of your questions..
1. why did she (tibbit) reacted badly to routine sedatives and check ups?
well think about it, she's was pregnant..that makes her real vunerable and emotional, sensitive ect..
2. Could Tibbit have define nature, resulting in the first known shark hybrid?
maybe, but i'll like to see some of the results of the preliminary reports before i jump into conclusions.
3. yes, we know that Assexual reproduction is uncommon in fish, but not imposiible specially in captivity.
If you put a bunch of man in captivity(prison) one or more of those man will eventually turn bi-sexual or homosexual. that's nothing new..
Now sharks parthenogenesis changes in captivities that's why you have this "rare" cases. think about how many of this cases have happend on natural habittat. vs. captivity..
The mistery is: how did she concived a sperm? well that shows you that science doesn't have all the answers..but i'm leaning more to the fact that the sperm was from another shark species..
Scientists are ONLY as right as their proof and comparisons.. that to me sounds like media bs, but hey there's some marine biologists involved so i'll take it into consideration.. thanks for the article..
1. why did she (tibbit) reacted badly to routine sedatives and check ups?
well think about it, she's was pregnant..that makes her real vunerable and emotional, sensitive ect..
2. Could Tibbit have define nature, resulting in the first known shark hybrid?
maybe, but i'll like to see some of the results of the preliminary reports before i jump into conclusions.
3. yes, we know that Assexual reproduction is uncommon in fish, but not imposiible specially in captivity.
If you put a bunch of man in captivity(prison) one or more of those man will eventually turn bi-sexual or homosexual. that's nothing new..
Now sharks parthenogenesis changes in captivities that's why you have this "rare" cases. think about how many of this cases have happend on natural habittat. vs. captivity..
The mistery is: how did she concived a sperm? well that shows you that science doesn't have all the answers..but i'm leaning more to the fact that the sperm was from another shark species..
Scientists are ONLY as right as their proof and comparisons.. that to me sounds like media bs, but hey there's some marine biologists involved so i'll take it into consideration.. thanks for the article..
aztec reef
Active Member
do you have videos of nurse sharks mating with another shark species?
team2jndd
Active Member
Originally Posted by Aztec Reef
Sounds like Bunk to me: well maybe, but i'll try to answer some of your questions..
3. yes, we know that Assexual reproduction is uncommon in fish, but not imposiible specially in captivity.
If you put a bunch of man in captivity(prison) one or more of those man will eventually turn bi-sexual or homosexual. that's nothing new..
Assexual reproduction means that one organism produces copies of itself with identical DNA. Twi men in prison is not assexual reproduction. Its not reproduction at all. Uncommon in fish? I don't know of any at all. I would be interested though if somebody knows the species of a few I could read up on. I was under the impression that the only forms of assexual reproduction were budding (like a brain coral) splitting/regeneration (like an anemone) fragmentation (kind of like splitting but with multiple parts and internal buds (sponges) I dont see how a fish can do any of these.
Sounds like Bunk to me: well maybe, but i'll try to answer some of your questions..
3. yes, we know that Assexual reproduction is uncommon in fish, but not imposiible specially in captivity.
If you put a bunch of man in captivity(prison) one or more of those man will eventually turn bi-sexual or homosexual. that's nothing new..
Assexual reproduction means that one organism produces copies of itself with identical DNA. Twi men in prison is not assexual reproduction. Its not reproduction at all. Uncommon in fish? I don't know of any at all. I would be interested though if somebody knows the species of a few I could read up on. I was under the impression that the only forms of assexual reproduction were budding (like a brain coral) splitting/regeneration (like an anemone) fragmentation (kind of like splitting but with multiple parts and internal buds (sponges) I dont see how a fish can do any of these.
aztec reef
Active Member
ASEXUAL= having no ---,independent of sexual processes.
here's a case on assexual, or parthenogenesis reproduction:
assexual reproduction is POSSIBLE specially in captivity and when there's no other MALE shark of that species in there.... A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male.
One of the scientists who worked on that study contacted the aquarium, which sent him tissue samples from Tidbit and her pup for testing. If the pup's DNA turns out to contain no contribution from a male shark, this would be the second known case of shark parthenogenesis.
the fact that there hasn't been any recordings of this happennings in the OCEAN is a different story..how would we even know? without checking the DNA of every shark. So i wouldn't call it impossible but "rare". The best chance to find out if assexual reproduction is taking place, is in captivity and that's because it gets monitored 24/7, and shark species are limited there. and just like the Article said:they didn't know that Tibbit was pregnant..but that wasn't the MISTERY...the mistery was that there was NO MALE blacktip shark species(like tibbit).. and it takes a sperm to produce..Unless Tibbit defined Nature.. you decide!
parthenogenesis: is a reproduction without male element.. we don't get much of those with human species either..
In the ocean there's no need for ANY shark to change to parthenogenesis, cause theres just lots of sharks to mate with...
Now, corals DO NOT do assexual reproduction by them self . you have to brake the coral into fragments(clone it) a.k.a fragging..(cloning) making a copy of it..(just like plants) splitting, regenerating, doesn't have nothing to do with parthenogenesis.
You cannot frag a shark and make shark pups from those fragments.
men or woman in captivity (prison)will turn assexual, or bi-sexual,or gay. and yes it is "rare" but not impossible..yes we all know that same sexes Can't reproduce.but that doesn't mean they aren't assexual..
here's a case on assexual, or parthenogenesis reproduction:
assexual reproduction is POSSIBLE specially in captivity and when there's no other MALE shark of that species in there.... A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male.
One of the scientists who worked on that study contacted the aquarium, which sent him tissue samples from Tidbit and her pup for testing. If the pup's DNA turns out to contain no contribution from a male shark, this would be the second known case of shark parthenogenesis.
the fact that there hasn't been any recordings of this happennings in the OCEAN is a different story..how would we even know? without checking the DNA of every shark. So i wouldn't call it impossible but "rare". The best chance to find out if assexual reproduction is taking place, is in captivity and that's because it gets monitored 24/7, and shark species are limited there. and just like the Article said:they didn't know that Tibbit was pregnant..but that wasn't the MISTERY...the mistery was that there was NO MALE blacktip shark species(like tibbit).. and it takes a sperm to produce..Unless Tibbit defined Nature.. you decide!
parthenogenesis: is a reproduction without male element.. we don't get much of those with human species either..
In the ocean there's no need for ANY shark to change to parthenogenesis, cause theres just lots of sharks to mate with...
Now, corals DO NOT do assexual reproduction by them self . you have to brake the coral into fragments(clone it) a.k.a fragging..(cloning) making a copy of it..(just like plants) splitting, regenerating, doesn't have nothing to do with parthenogenesis.
You cannot frag a shark and make shark pups from those fragments.
men or woman in captivity (prison)will turn assexual, or bi-sexual,or gay. and yes it is "rare" but not impossible..yes we all know that same sexes Can't reproduce.but that doesn't mean they aren't assexual..
team2jndd
Active Member
Originally Posted by Aztec Reef
ASEXUAL= having no ---,independent of sexual processes.
here's a case on assexual, or parthenogenesis reproduction:
assexual reproduction is POSSIBLE specially in captivity and when there's no other MALE shark of that species in there.... A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male.
One of the scientists who worked on that study contacted the aquarium, which sent him tissue samples from Tidbit and her pup for testing. If the pup's DNA turns out to contain no contribution from a male shark, this would be the second known case of shark parthenogenesis.
the fact that there hasn't been any recordings of this happennings in the OCEAN is a different story..how would we even know? without checking the DNA of every shark. So i wouldn't call it impossible but "rare". The best chance to find out if assexual reproduction is taking place, is in captivity and that's because it gets monitored 24/7, and shark species are limited there. and just like the Article said:they didn't know that Tibbit was pregnant..but that wasn't the MISTERY...the mistery was that there was NO MALE blacktip shark species(like tibbit).. and it takes a sperm to produce..Unless Tibbit defined Nature.. you decide!
parthenogenesis: is a reproduction without male element.. we don't get much of those with human species either..
In the ocean there's no need for ANY shark to change to parthenogenesis, cause theres just lots of sharks to mate with...
Now, corals DO NOT do assexual reproduction by them self . you have to brake the coral into fragments(clone it) a.k.a fragging..(cloning) making a copy of it..(just like plants) splitting, regenerating, doesn't have nothing to do with parthenogenesis.
You cannot frag a shark and make shark pups from those fragments.
men or woman in captivity (prison)will turn assexual, or bi-sexual,or gay. and yes it is "rare" but not impossible..yes we all know that same sexes Can't reproduce.but that doesn't mean they aren't assexual..
How do they know that sharks do not have the ability to store sperm until they are ready to produce offspring like many other species? Some corals do reproduce without fragging it is called budding. They create a small copy of themselves which forms a bud and grows until it is finally released by the mother colony. Regeneration is a form of asexual reproduction. Anytime more of a species is made, it is reproduction, if the reproduction occurs with only a male or only a female, it is asexual.
ASEXUAL= having no ---,independent of sexual processes.
here's a case on assexual, or parthenogenesis reproduction:
assexual reproduction is POSSIBLE specially in captivity and when there's no other MALE shark of that species in there.... A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male.
One of the scientists who worked on that study contacted the aquarium, which sent him tissue samples from Tidbit and her pup for testing. If the pup's DNA turns out to contain no contribution from a male shark, this would be the second known case of shark parthenogenesis.
the fact that there hasn't been any recordings of this happennings in the OCEAN is a different story..how would we even know? without checking the DNA of every shark. So i wouldn't call it impossible but "rare". The best chance to find out if assexual reproduction is taking place, is in captivity and that's because it gets monitored 24/7, and shark species are limited there. and just like the Article said:they didn't know that Tibbit was pregnant..but that wasn't the MISTERY...the mistery was that there was NO MALE blacktip shark species(like tibbit).. and it takes a sperm to produce..Unless Tibbit defined Nature.. you decide!
parthenogenesis: is a reproduction without male element.. we don't get much of those with human species either..
In the ocean there's no need for ANY shark to change to parthenogenesis, cause theres just lots of sharks to mate with...
Now, corals DO NOT do assexual reproduction by them self . you have to brake the coral into fragments(clone it) a.k.a fragging..(cloning) making a copy of it..(just like plants) splitting, regenerating, doesn't have nothing to do with parthenogenesis.
You cannot frag a shark and make shark pups from those fragments.
men or woman in captivity (prison)will turn assexual, or bi-sexual,or gay. and yes it is "rare" but not impossible..yes we all know that same sexes Can't reproduce.but that doesn't mean they aren't assexual..
How do they know that sharks do not have the ability to store sperm until they are ready to produce offspring like many other species? Some corals do reproduce without fragging it is called budding. They create a small copy of themselves which forms a bud and grows until it is finally released by the mother colony. Regeneration is a form of asexual reproduction. Anytime more of a species is made, it is reproduction, if the reproduction occurs with only a male or only a female, it is asexual.
team2jndd
Active Member
Originally Posted by team2jndd
How do they know that sharks do not have the ability to store sperm until they are ready to produce offspring like many other species? Some corals do reproduce without fragging it is called budding. They create a small copy of themselves which forms a bud and grows until it is finally released by the mother colony. Regeneration is a form of asexual reproduction. Anytime more of a species is made, it is reproduction, if the reproduction occurs with only a male or only a female, it is asexual.
And with the prison thing... that isn't the context the word is generally used in. You wouldn't say that a virgin is an asexual being. It is normally linked to reproduction. In either case, it is irrelevant to this thread so I still don't understand the point. If a creature becomes assexual in captivity because there are none of the opposite ---, they do it with the means of reproduction. In jail... well its a little different.
How do they know that sharks do not have the ability to store sperm until they are ready to produce offspring like many other species? Some corals do reproduce without fragging it is called budding. They create a small copy of themselves which forms a bud and grows until it is finally released by the mother colony. Regeneration is a form of asexual reproduction. Anytime more of a species is made, it is reproduction, if the reproduction occurs with only a male or only a female, it is asexual.
And with the prison thing... that isn't the context the word is generally used in. You wouldn't say that a virgin is an asexual being. It is normally linked to reproduction. In either case, it is irrelevant to this thread so I still don't understand the point. If a creature becomes assexual in captivity because there are none of the opposite ---, they do it with the means of reproduction. In jail... well its a little different.
aztec reef
Active Member
Originally Posted by team2jndd
How do they know that sharks do not have the ability to store sperm until they are ready to produce offspring like many other species? Some corals do reproduce without fragging it is called budding. They create a small copy of themselves which forms a bud and grows until it is finally released by the mother colony. Regeneration is a form of asexual reproduction. Anytime more of a species is made, it is reproduction, if the reproduction occurs with only a male or only a female, it is asexual.
Sharks DO NOT store sperm(and in this cases there was no sperm) it's been in captivity without a Male of its own species for years..Unlesss the shark defined Nature and mated with a different species Or it was an asexual reproduction wich will be another case of Parthenogenesis..those are the ONLY two possibilities in this case.
The sperm will die eventually if there's no egg to fertalize. Another species that have the capability to asexual reproduction are : Liverworts,mosses, and some lower animals, this species do assexual reproduction more commanly. Although they don't do it all the time, they alternate sexual with asexual through generations..
Corals do BUD, but that it's part of the same coral thriving and making new colonies. that does NOT mean "asexual" reproduction.
how do you know which corals are males or females???
REGENERATION means: the formation of new animal tissue to REPAIR the waste of the body or to replace worn out tissue, it also means the reproduction of lost parts or organs.. in other words this happends when some coral tissue is diying and the corals react by re-generating..that's NOT asexual reproduction either..
How do they know that sharks do not have the ability to store sperm until they are ready to produce offspring like many other species? Some corals do reproduce without fragging it is called budding. They create a small copy of themselves which forms a bud and grows until it is finally released by the mother colony. Regeneration is a form of asexual reproduction. Anytime more of a species is made, it is reproduction, if the reproduction occurs with only a male or only a female, it is asexual.
Sharks DO NOT store sperm(and in this cases there was no sperm) it's been in captivity without a Male of its own species for years..Unlesss the shark defined Nature and mated with a different species Or it was an asexual reproduction wich will be another case of Parthenogenesis..those are the ONLY two possibilities in this case.
The sperm will die eventually if there's no egg to fertalize. Another species that have the capability to asexual reproduction are : Liverworts,mosses, and some lower animals, this species do assexual reproduction more commanly. Although they don't do it all the time, they alternate sexual with asexual through generations..
Corals do BUD, but that it's part of the same coral thriving and making new colonies. that does NOT mean "asexual" reproduction.
how do you know which corals are males or females???
REGENERATION means: the formation of new animal tissue to REPAIR the waste of the body or to replace worn out tissue, it also means the reproduction of lost parts or organs.. in other words this happends when some coral tissue is diying and the corals react by re-generating..that's NOT asexual reproduction either..
aztec reef
Active Member
Originally Posted by team2jndd
And with the prison thing... that isn't the context the word is generally used in. You wouldn't say that a virgin is an asexual being. It is normally linked to reproduction. In either case, it is irrelevant to this thread so I still don't understand the point. If a creature becomes assexual in captivity because there are none of the opposite ---, they do it with the means of reproduction. In jail... well its a little different.
yeah it is kind of Irrelavent, but i believe that Jesus was part of a asexual reproduction if that makes sense.(i hate to bring religion in) in this case mary was an asexual being ...Although that's scientifically impossible. But science doesn't define asexual reproduction very well either..(of Sharks).. cause if asexual reproduction happend with human species it would be a miracle right?
And with the prison thing... that isn't the context the word is generally used in. You wouldn't say that a virgin is an asexual being. It is normally linked to reproduction. In either case, it is irrelevant to this thread so I still don't understand the point. If a creature becomes assexual in captivity because there are none of the opposite ---, they do it with the means of reproduction. In jail... well its a little different.
yeah it is kind of Irrelavent, but i believe that Jesus was part of a asexual reproduction if that makes sense.(i hate to bring religion in) in this case mary was an asexual being ...Although that's scientifically impossible. But science doesn't define asexual reproduction very well either..(of Sharks).. cause if asexual reproduction happend with human species it would be a miracle right?
team2jndd
Active Member
Originally Posted by Aztec Reef
Sharks DO NOT store sperm(and in this cases there was no sperm) it's been in captivity without a Male of its own species for years..Unlesss the shark defined Nature and mated with a different species Or it was an asexual reproduction wich will be another case of Parthenogenesis..those are the ONLY two possibilities in this case.
The sperm will die eventually if there's no egg to fertalize. Another species that have the capability to asexual reproduction are : Liverworts,mosses, and some lower animals, this species do assexual reproduction more commanly. Although they don't do it all the time, they alternate sexual with asexual through generations..
Corals do BUD, but that it's part of the same coral thriving and making new colonies. that does NOT mean "asexual" reproduction.
how do you know which corals are males or females???
REGENERATION means: the formation of new animal tissue to REPAIR the waste of the body or to replace worn out tissue, it also means the reproduction of lost parts or organs.. in other words this happends when some coral tissue is diying and the corals react by re-generating..that's NOT asexual reproduction either..
An octopus can give birth without the presence of a male for a long period of time as well. I can't quite remember if they store sperm or if they store fertilized eggs so I will have to get back to you on that. In either case, I am able to believe this more so than I am that this shark produced asexually. If an animal was able to reproduce asexually, it would always do so. As far as we know, no animal that has a set --- reproduces asexually. Which brings me back to your argument about the brain coral. Budding IS a form of asexual reproduction as is regeneration. If you choose not to believe me (and i don't blame you if you don't) here is a biology website's opinion. http://biology.about.com/library/weekly/aa090700a.htm Notice the first form of asexual reproduction listed? They are in alphabetical order so I am sure you will be able to find regeneration a little closer to the bottom. Oh and, asexual reproduction is simply reproduction without any meiosis taking place. Growing a finger back requires asexual reproduction of the cells because they need to make EXACT copies of themselves. After meiosis, you have half as many chromosomes which is why you need a sperm AND an egg.
Sharks DO NOT store sperm(and in this cases there was no sperm) it's been in captivity without a Male of its own species for years..Unlesss the shark defined Nature and mated with a different species Or it was an asexual reproduction wich will be another case of Parthenogenesis..those are the ONLY two possibilities in this case.
The sperm will die eventually if there's no egg to fertalize. Another species that have the capability to asexual reproduction are : Liverworts,mosses, and some lower animals, this species do assexual reproduction more commanly. Although they don't do it all the time, they alternate sexual with asexual through generations..
Corals do BUD, but that it's part of the same coral thriving and making new colonies. that does NOT mean "asexual" reproduction.
how do you know which corals are males or females???
REGENERATION means: the formation of new animal tissue to REPAIR the waste of the body or to replace worn out tissue, it also means the reproduction of lost parts or organs.. in other words this happends when some coral tissue is diying and the corals react by re-generating..that's NOT asexual reproduction either..
An octopus can give birth without the presence of a male for a long period of time as well. I can't quite remember if they store sperm or if they store fertilized eggs so I will have to get back to you on that. In either case, I am able to believe this more so than I am that this shark produced asexually. If an animal was able to reproduce asexually, it would always do so. As far as we know, no animal that has a set --- reproduces asexually. Which brings me back to your argument about the brain coral. Budding IS a form of asexual reproduction as is regeneration. If you choose not to believe me (and i don't blame you if you don't) here is a biology website's opinion. http://biology.about.com/library/weekly/aa090700a.htm Notice the first form of asexual reproduction listed? They are in alphabetical order so I am sure you will be able to find regeneration a little closer to the bottom. Oh and, asexual reproduction is simply reproduction without any meiosis taking place. Growing a finger back requires asexual reproduction of the cells because they need to make EXACT copies of themselves. After meiosis, you have half as many chromosomes which is why you need a sperm AND an egg.
stdreb27
Active Member
I didn't mean for this to be a debate, I just thought the article was interesting. I personally would think that it wouldn't be assexual. but a hybrid thing the simpler explination would be the most likely. There are alot of animals that do reproduce assexually. Or even change ---. But I don't think that is really likely in this situation. I would also throw out that maybe they didn't know what kind of shark they really had.
Actually biblically, mary was impregnated by a divine being. Not assexually.
Actually biblically, mary was impregnated by a divine being. Not assexually.
aztec reef
Active Member
Don't worry stdreb27 i love to debate with people that know what they're talking about and manage to keep it civil like team2jndd
. as far as the bible i don't take it literaly. that's how i believe what i believe.
So you're saying that this devine being had a name? and was he incarnated like mary & jesus?
Back to topic! ok, apperently you guys need an UPDATE: here it is..
Team2jndd: First of all, Reproduction is ONE thing. Assexual reproduction is a totally different story..they both reproduce but asexual reproduction means it doesn't take two individuals (male & female) to reproduce.
Fine, you wanna call "coral reproducion" asexual reproduction? that's fine with me, but I wouldn't call it that!
Plus we Cannot compare Coral reproduction with shark parthenogenesis or with shark reproduction, that's apples and oranges..
Researchers have noted that ASEXUAL reproduction is possible in female sharks especially hammerheads. This is called PARTHENOGENESIS IT usually occurs most commanly in wasps,bees,ants and some arthropods and it means the development of an fertalized egg into an individual..also
parthenogenic reproduction takes place without fertilization by a Male through the process of cell division, when the mothers egg fuses with a degenerative cell called a polar body, producing a new individual..it other words its ONLY the mothers Genome.
have you heard of the phrase:NO --- PLEASE, WE'RE FEMALE SHARKS!
there's a thing called "Automatic Parthenogenesis" which means: that females sharks reproduce more often like this when they have a hard time finding mates, specially at low population densities(captivity).
automictic parthenogenesis leads to less genetic diversity in the offspring compared to even the mother.
During this process the unfertilized egg, which contains about half of the mother’s genetic diversity, is activated to behave as a normal fertilized egg by a small, genetically nearly-identical cell known as the sister polar body. The resulting baby shark therefore gets a double-dose of genetic disadvantage.
Shark evolution by the means of parthenogenesis is becoming more comman in captivity.
This will have a big impact on small isolated populations such as captivity, cause of the lesser genetic diversity. Bee's and bird's already do it! why can't sharks?
So you're saying that this devine being had a name? and was he incarnated like mary & jesus?
Back to topic! ok, apperently you guys need an UPDATE: here it is..
Team2jndd: First of all, Reproduction is ONE thing. Assexual reproduction is a totally different story..they both reproduce but asexual reproduction means it doesn't take two individuals (male & female) to reproduce.
Fine, you wanna call "coral reproducion" asexual reproduction? that's fine with me, but I wouldn't call it that!
Plus we Cannot compare Coral reproduction with shark parthenogenesis or with shark reproduction, that's apples and oranges..
Researchers have noted that ASEXUAL reproduction is possible in female sharks especially hammerheads. This is called PARTHENOGENESIS IT usually occurs most commanly in wasps,bees,ants and some arthropods and it means the development of an fertalized egg into an individual..also
parthenogenic reproduction takes place without fertilization by a Male through the process of cell division, when the mothers egg fuses with a degenerative cell called a polar body, producing a new individual..it other words its ONLY the mothers Genome.
have you heard of the phrase:NO --- PLEASE, WE'RE FEMALE SHARKS!
there's a thing called "Automatic Parthenogenesis" which means: that females sharks reproduce more often like this when they have a hard time finding mates, specially at low population densities(captivity).
automictic parthenogenesis leads to less genetic diversity in the offspring compared to even the mother.
During this process the unfertilized egg, which contains about half of the mother’s genetic diversity, is activated to behave as a normal fertilized egg by a small, genetically nearly-identical cell known as the sister polar body. The resulting baby shark therefore gets a double-dose of genetic disadvantage.
Shark evolution by the means of parthenogenesis is becoming more comman in captivity.
This will have a big impact on small isolated populations such as captivity, cause of the lesser genetic diversity. Bee's and bird's already do it! why can't sharks?
jennythebugg
Active Member
aztec, if that is the case do you think that captive bred fish will eventually begin doing this?
its been interesting watching you guys talk about this
its been interesting watching you guys talk about this
team2jndd
Active Member
I just don't understand why sharks of all creatures would be reproducing asexually. Sharks are one of the oldest creatures on the planet. (if you believe in evolution which I am assuming you do not. Nor do I blame you for it) Asexual reproduction means that there would be absolutely no change from generation to generation. Sharks (if evolution is true) have been forced to evolve over the years to accomodate to the changes in climate and competition. If they were always producing asexually, evolution shouldn't have been possible. Also, if sharks only perform parthenogenesis in captivity, how can that ever be proven? AND if they were producing asexually, wouldn't the female shark population greatly outnumber that of the male population? Why would male sharks even exist? After a few billion years, shouldn't they have become useless and disappeared? Also, asexual reproduction hurts a species because of major diseases. Eliminating the breeding pool would also severely limit the antibodies to major/new diseases. If a mother doesn't have the antibodies to a disease, none of her offspring will either if she reproduces asexually. Therefore, a major disease would be far more catastrophic to that species. I don't understand why one of nature's oldest creatures would be digressing in evolutionary terms. You are right though, it is nice to disagree with somebody who can keep the conversation civilized. I am not questioning you I am just questioning the topic.
aztec reef
Active Member
Jenny, we'll never know if captive bred fish will eventually do this. Until we prove it..right? but I'll tell you, keep your minds open. Cause it could be something that hasn't been discovered or proven or tested. Also the sharks that have been reproducing asexualy they WERE NOT captive bred. those sharks were from the Ocean and were captive, THEY WEREN'T BORNED CAPTIVE.
Team,
Not just sharks have been producing asexualy, bee's & birds already do it. And when scientists have said: "A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male."... what would you call that? a miracle? It's certainly not Evolution... That's how the parthenogenesis has been PROVEN.. and if "Tibbit" comes out to be asexual reproduction that would be two cases PROVEN by scientists and marine biologists..yes i know there isn't many cases but that's why its a rare happening.
I know sharks are the oldest creatures of our planet just like crocs.. As far as evolution, I NEVER said i don't believe in it. This hole world has to evolutionize, even our Continents have evolved, it has been proven through out history.NO DOUBT.. or otherwise there would be no sharks or no crocs, no turtles ect.
I never said that sharks have been ALWAYS reproducing asexualy.Especially at the Ocean..it would be impossible to record this happenings in Open seas.
What i said and HAS been proven was, that sharks do parthenogenesis in low Male species populated densities such as Captivity..and it's a "rare" thing, not an Usual one.
Sharks in the Ocean can simply migrate to a different place to find mates or better enviroment. but they can't do that in captivity.
As far as reproducing asexually, There's is change throughout generations with Liverworts,mosses, and some lower animals, this species do assexual reproduction more commanly. Although they don't do it all the time, they alternate sexual with asexual through generations..This has not been PROVEN in sharks yet.
Team,
Not just sharks have been producing asexualy, bee's & birds already do it. And when scientists have said: "A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male."... what would you call that? a miracle? It's certainly not Evolution... That's how the parthenogenesis has been PROVEN.. and if "Tibbit" comes out to be asexual reproduction that would be two cases PROVEN by scientists and marine biologists..yes i know there isn't many cases but that's why its a rare happening.
I know sharks are the oldest creatures of our planet just like crocs.. As far as evolution, I NEVER said i don't believe in it. This hole world has to evolutionize, even our Continents have evolved, it has been proven through out history.NO DOUBT.. or otherwise there would be no sharks or no crocs, no turtles ect.
I never said that sharks have been ALWAYS reproducing asexualy.Especially at the Ocean..it would be impossible to record this happenings in Open seas.
What i said and HAS been proven was, that sharks do parthenogenesis in low Male species populated densities such as Captivity..and it's a "rare" thing, not an Usual one.
Sharks in the Ocean can simply migrate to a different place to find mates or better enviroment. but they can't do that in captivity.
As far as reproducing asexually, There's is change throughout generations with Liverworts,mosses, and some lower animals, this species do assexual reproduction more commanly. Although they don't do it all the time, they alternate sexual with asexual through generations..This has not been PROVEN in sharks yet.
team2jndd
Active Member
Originally Posted by Aztec Reef
Jenny, we'll never know if captive bred fish will eventually do this. Until we prove it..right? but I'll tell you, keep your minds open. Cause it could be something that hasn't been discovered or proven or tested. Also the sharks that have been reproducing asexualy they WERE NOT captive bred. those sharks were from the Ocean and were captive, THEY WEREN'T BORNED CAPTIVE.
Team,
Not just sharks have been producing asexualy, bee's & birds already do it. And when scientists have said: "A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male."... what would you call that? a miracle? It's certainly not Evolution... That's how the parthenogenesis has been PROVEN.. and if "Tibbit" comes out to be asexual reproduction that would be two cases PROVEN by scientists and marine biologists..yes i know there isn't many cases but that's why its a rare happening.
I know sharks are the oldest creatures of our planet just like crocs.. As far as evolution, I NEVER said i don't believe in it. This hole world has to evolutionize, even our Continents have evolved, it has been proven through out history.NO DOUBT.. or otherwise there would be no sharks or no crocs, no turtles ect.
I never said that sharks have been ALWAYS reproducing asexualy.Especially at the Ocean..it would be impossible to record this happenings in Open seas.
What i said and HAS been proven was, that sharks do parthenogenesis in low Male species populated densities such as Captivity..and it's a "rare" thing, not an Usual one.
Sharks in the Ocean can simply migrate to a different place to find mates or better enviroment. but they can't do that in captivity.
As far as reproducing asexually, There's is change throughout generations with Liverworts,mosses, and some lower animals, this species do assexual reproduction more commanly. Although they don't do it all the time, they alternate sexual with asexual through generations..This has not been PROVEN in sharks yet.
Than why not do it in the wild? If a female shark could reproduce on her own, why not do it. Unless you believe they have a level of thinking that can appreciate and comprehend the importance of sexual reproduction in coordinance with their species as a whole, why mate with males? If women could just have babies on their own, they deffinately wouldn't need us if not for the fact that they would be able to appreciate that without interbreeding, the gene pool becomes nondiverse. If you don't believe that the sharks are capable of this higher level thinking but still maintain sexual reproduction, than the ideas must be programed into their minds some other way. I just think that the problem is far more complex than either you or I will ever be able to understand. I am also intrigued by the fact that you are a religious person who believes in evolution. I am not questioning your faith at all I am just trying to gain a bearing on where you are coming from. Some people believe that god got the ball rolling and evolution took it from there. I think that all theories are just our way of divising stories to explain the inexplicable but that is just me.
Jenny, we'll never know if captive bred fish will eventually do this. Until we prove it..right? but I'll tell you, keep your minds open. Cause it could be something that hasn't been discovered or proven or tested. Also the sharks that have been reproducing asexualy they WERE NOT captive bred. those sharks were from the Ocean and were captive, THEY WEREN'T BORNED CAPTIVE.
Team,
Not just sharks have been producing asexualy, bee's & birds already do it. And when scientists have said: "A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male."... what would you call that? a miracle? It's certainly not Evolution... That's how the parthenogenesis has been PROVEN.. and if "Tibbit" comes out to be asexual reproduction that would be two cases PROVEN by scientists and marine biologists..yes i know there isn't many cases but that's why its a rare happening.
I know sharks are the oldest creatures of our planet just like crocs.. As far as evolution, I NEVER said i don't believe in it. This hole world has to evolutionize, even our Continents have evolved, it has been proven through out history.NO DOUBT.. or otherwise there would be no sharks or no crocs, no turtles ect.
I never said that sharks have been ALWAYS reproducing asexualy.Especially at the Ocean..it would be impossible to record this happenings in Open seas.
What i said and HAS been proven was, that sharks do parthenogenesis in low Male species populated densities such as Captivity..and it's a "rare" thing, not an Usual one.
Sharks in the Ocean can simply migrate to a different place to find mates or better enviroment. but they can't do that in captivity.
As far as reproducing asexually, There's is change throughout generations with Liverworts,mosses, and some lower animals, this species do assexual reproduction more commanly. Although they don't do it all the time, they alternate sexual with asexual through generations..This has not been PROVEN in sharks yet.
Than why not do it in the wild? If a female shark could reproduce on her own, why not do it. Unless you believe they have a level of thinking that can appreciate and comprehend the importance of sexual reproduction in coordinance with their species as a whole, why mate with males? If women could just have babies on their own, they deffinately wouldn't need us if not for the fact that they would be able to appreciate that without interbreeding, the gene pool becomes nondiverse. If you don't believe that the sharks are capable of this higher level thinking but still maintain sexual reproduction, than the ideas must be programed into their minds some other way. I just think that the problem is far more complex than either you or I will ever be able to understand. I am also intrigued by the fact that you are a religious person who believes in evolution. I am not questioning your faith at all I am just trying to gain a bearing on where you are coming from. Some people believe that god got the ball rolling and evolution took it from there. I think that all theories are just our way of divising stories to explain the inexplicable but that is just me.
aztec reef
Active Member
Originally Posted by team2jndd
Than why not do it in the wild? If a female shark could reproduce on her own, why not do it. Unless you believe they have a level of thinking that can appreciate and comprehend the importance of sexual reproduction in coordinance with their species as a whole, why mate with males? If women could just have babies on their own, they deffinately wouldn't need us if not for the fact that they would be able to appreciate that without interbreeding, the gene pool becomes nondiverse. If you don't believe that the sharks are capable of this higher level thinking but still maintain sexual reproduction, than the ideas must be programed into their minds some other way. I just think that the problem is far more complex than either you or I will ever be able to understand. I am also intrigued by the fact that you are a religious person who believes in evolution. I am not questioning your faith at all I am just trying to gain a bearing on where you are coming from. Some people believe that god got the ball rolling and evolution took it from there. I think that all theories are just our way of divising stories to explain the inexplicable but that is just me.
there's no Way to find out in the wild, they're not monitored like in captivity. You still questioning if females shark Can reproduce on its own, but like i said it has been PROVEN, you don't believe what scientists are saying? I don't think it's the sharks choice Nor do i think they have the capability to higher level thinking. But it's something that gets triggered especially in captivity. a.k.a.
"Automatic Parthenogenesis" which means: that females sharks reproduce more often like this when they have a hard time finding mates, specially at low population densities.
During this process the unfertilized egg, which contains about half of the mother’s genetic diversity, is activated to behave as a normal fertilized egg by a small, genetically nearly-identical cell known as the sister polar body.
As far as religion, i've never been called a religious man, although i have read the bible and believe in god, and his word. period. i don't go to church and i don't take the bible literally. I will say that i think God did got the ball rolling and then evolution took over and that's where science comes in. NOT ANY SOONER.. Can you share your views on Evolution?? before human species. Are Apes our ancestors?
I'm into science bs too, and as far as i know Our planet was formed by the birth of a Black hole, which are Big players in the making of galaxis,planets and stars. Earth ended up in the perfect place while the rest of the planets ended up in the Quazar's place . i'm i right? Can you explain how Black holes are formed in the first place? better yet, can you explain how is such a coinsidence that out of all our planets, PLANET EARTH is the only planet that human species CAN survive and thrive?
I love to question the Unexplainable, stuff that science can't explain.
Than why not do it in the wild? If a female shark could reproduce on her own, why not do it. Unless you believe they have a level of thinking that can appreciate and comprehend the importance of sexual reproduction in coordinance with their species as a whole, why mate with males? If women could just have babies on their own, they deffinately wouldn't need us if not for the fact that they would be able to appreciate that without interbreeding, the gene pool becomes nondiverse. If you don't believe that the sharks are capable of this higher level thinking but still maintain sexual reproduction, than the ideas must be programed into their minds some other way. I just think that the problem is far more complex than either you or I will ever be able to understand. I am also intrigued by the fact that you are a religious person who believes in evolution. I am not questioning your faith at all I am just trying to gain a bearing on where you are coming from. Some people believe that god got the ball rolling and evolution took it from there. I think that all theories are just our way of divising stories to explain the inexplicable but that is just me.
there's no Way to find out in the wild, they're not monitored like in captivity. You still questioning if females shark Can reproduce on its own, but like i said it has been PROVEN, you don't believe what scientists are saying? I don't think it's the sharks choice Nor do i think they have the capability to higher level thinking. But it's something that gets triggered especially in captivity. a.k.a.
"Automatic Parthenogenesis" which means: that females sharks reproduce more often like this when they have a hard time finding mates, specially at low population densities.
During this process the unfertilized egg, which contains about half of the mother’s genetic diversity, is activated to behave as a normal fertilized egg by a small, genetically nearly-identical cell known as the sister polar body.
As far as religion, i've never been called a religious man, although i have read the bible and believe in god, and his word. period. i don't go to church and i don't take the bible literally. I will say that i think God did got the ball rolling and then evolution took over and that's where science comes in. NOT ANY SOONER.. Can you share your views on Evolution?? before human species. Are Apes our ancestors?
I'm into science bs too, and as far as i know Our planet was formed by the birth of a Black hole, which are Big players in the making of galaxis,planets and stars. Earth ended up in the perfect place while the rest of the planets ended up in the Quazar's place . i'm i right? Can you explain how Black holes are formed in the first place? better yet, can you explain how is such a coinsidence that out of all our planets, PLANET EARTH is the only planet that human species CAN survive and thrive?
I love to question the Unexplainable, stuff that science can't explain.