All-girl fish that hasn't had sex for 70,000 years


	All-girl fish that hasn't had sex for 70,000 years

dakotayii

4-23-2008 10:03 AM

925 views

tags:

science

dakotayii says:

According to the report in the BMC Evolutionary Biology journal, one theory is that the fish may occasionally be taking some of the DNA from the males that trigger reproduction, in order to refresh their gene pool.

Dr Laurence Loewe, of the university's School of Biological Sciences, said: "What we have shown now is that this fish really has something special going on and that some special tricks exist to help this fish survive.

"Maybe there is still occasional sex with strangers that keeps the species alive. Future research may give us some answers."

4 Comments |

Add a Comment

4-23-2008 12:43 PM

Sheroug

You go girl!

4-23-2008 2:20 PM

arifsali

Amazing

4-23-2008 4:00 PM

carrerinyes

Girl power

4-24-2008 8:33 AM

papananook

She must have taken that Texas "abstinence" vow....so deprived for all the wrong reasons.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/2f2f459c-240d-4e6c-b05a-fe07e659cf3e/2A384D37-2961-4B96-AEF4-3F1496B9134C/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.dailymail.co.uk/pages/live/articles/technology/technology.html?in_article_id=561479&in_page_id=1965&ito=1490" href="http://www.dailymail.co.uk/pages/live/articles/technology/technology.html?in_article_id=561479&in_page_id=1965&ito=1490" style="font-size: 11px;">www.dailymail.co.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.dailymail.co.uk/pages/live/articles/technology/technology.html?in_article_id=561479&in_page_id=1965&ito=1490"> An all-girl species of fish which has survived for 70,000 years without the aid of sexual reproduction is defying the laws of evolution, new research shows.
<P></P><P>British scientists say the Amazon Molly fish ought by rights to be extinct but may be employing special genetic survival "tricks".
</P><P>The all-female fish interact sexually with males of other species to trigger a bizarre reproduction known as gynogenesis.
</P><P>The male fishes' sperm sparks the development of an embryo, but none of the male DNA appears to be passed on to the offspring. Only the mother's genes are inherited.
</P><P>The species is still thriving in rivers in south-east Texas and north-east Mexico, but are named "Amazons" after the all-women warriors of Greek myth.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/2A384D37-2961-4B96-AEF4-3F1496B9134C/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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