Male-killer overcome by fastest evolutionary change ever observed.

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	Male-killer overcome by fastest evolutionary change ever observed.
JohnWaterman
2-10-2009 5:21 PM
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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/3566b76c-f8db-46bd-aee6-ad05f2a3bd3b/65E34A14-A221-40CD-B847-E738283B4ABF/" 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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php" href="http://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php" style="font-size: 11px;">scienceblogs.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php"><H2><A href="http://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php" id="a104068">Butterflies evolve resistance to male-killing bacteria in record time</A></H2></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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php"><P><STRONG><EM>This is the third of <A href="http://scienceblogs.com/notrocketscience/2009/02/darwins_bicentennial_-_a_celebration.php">eight posts on evolutionary research</A> to celebrate Darwin's bicentennial.</EM></STRONG>
</P></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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php"><P>
</P><P><A href="http://bpr3.org/?p=52">In our world, there is (roughly) one man for every woman. Despite various social differences, our </A><A href="http://en.wikipedia.org/wiki/Sex_ratio">gender ratio</A> remains steadfastly equal</P></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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">Elsewhere in the nature, things are not quite so balanced</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">the <A href="http://en.wikipedia.org/wiki/Hypolimnas_bolina">blue moon butterfly</A> (<EM>Hypolimnas bolina</EM>)</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/scienceblogs.com/img/9C59C2E1-B1E7-47D5-B213-CCB11E41CCE8" alt="Bluemoonbutterfly.jpg" /></div></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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">Emily Dyson and Greg Hurst were studying this stunningly beautiful insect on the <A href="http://en.wikipedia.org/wiki/Image:Samoa_Country_map.png">Samoan islands of </A><A href="http://en.wikipedia.org/wiki/Image:Samoa_Country_map.png">Savaii and Upolu</A> when they noticed something strange - almost all the butterflies were females. In fact, the vastly outnumbered males only made up 1% of the population</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">The cause</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">an infection, an inherited bacterium called <A href="http://en.wikipedia.org/wiki/Wolbachia"><EM>Wolbachia</EM></A>. <EM></EM></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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">a strong candidate for the planet's most successful parasite</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php"> And it does not like males</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php"> by 2005</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">a formal survey confirmed the males' amazing comeback</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">fastest evolutionary change that has ever been observed</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php">natural selection in action</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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/scienceblogs.com/img/01568690-6AD1-4D8D-90F7-1E047413571B" alt="Bluemoonbutterfly2.jpg" /></div></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://scienceblogs.com/notrocketscience/2009/02/butterflies_evolve_resistance_to_male-killing_bacteria_in_re.php"> <A href="http://en.wikipedia.org/wiki/Evolutionary_arms_race">evolutionary arms race</A>.</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/65E34A14-A221-40CD-B847-E738283B4ABF/blog/" title="blog or email this clip"><img src="http://content7.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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