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	Vigrin Birth

balthazarus

10-10-2008 4:53 PM

413 views

tags:

sharks, birth, stress

balthazarus says:

Very intriguing.

1 Comment |

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10-10-2008 6:01 PM

carrerinyes

Must have been Catholic...

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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/167f00ed-0ce8-41bf-aaf6-1a1d0d075dad/A38A7C6B-BAB0-4382-B4CE-9630BC4F2B46/" 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.latimes.com/news/science/wire/sns-ap-sci-shark-mystery,1,1021420.story" href="http://www.latimes.com/news/science/wire/sns-ap-sci-shark-mystery,1,1021420.story" style="font-size: 11px;">www.latimes.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.latimes.com/news/science/wire/sns-ap-sci-shark-mystery,1,1021420.story">Scientists: DNA testing proves Virginia shark's pup a 'virgin birth'; 2nd case 
ever confirmed</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.latimes.com/news/science/wire/sns-ap-sci-shark-mystery,1,1021420.story">scientists said DNA testing proved that a pup carried by a female Atlantic 
blacktip shark in the Virginia Aquarium &amp; Marine Science Center contained no 
genetic material from a male.<BR></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.latimes.com/news/science/wire/sns-ap-sci-shark-mystery,1,1021420.story">The scientists cautioned that the rare asexual births should not be viewed as a 
possible solution to declining global shark populations.<BR></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.latimes.com/news/science/wire/sns-ap-sci-shark-mystery,1,1021420.story">Virgin birth has been proven in some bony fish, amphibians, reptiles and birds, 
and has been suspected among sharks in the wild. The scientists who studied the 
Virginia and Nebraska sharks said the newly formed pups acquired one set of 
chromosomes when the mother's chromosomes split during egg development, then 
united anew.<BR></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.latimes.com/news/science/wire/sns-ap-sci-shark-mystery,1,1021420.story">"It is very unlikely that a small number of female survivors could build their 
numbers up very quickly by undergoing virgin birth," Chapman said</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.latimes.com/news/science/wire/sns-ap-sci-shark-mystery,1,1021420.story">their findings offer "intriguing questions" about how frequently automictic 
parthenogenesis occurs in the wild</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/A38A7C6B-BAB0-4382-B4CE-9630BC4F2B46/blog/" title="blog or email this clip"><img src="http://content8.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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