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In spiders, size matters: Small males are more often meals
ofcapri
follow
2
10-22-2009 11:13 AM
77 views
tags:
nature
ofcapri
says:
"We were surprised to find that such a simple characteristic such as how small males are relative to females has such a large effect on the frequency of sexual cannibalism," states Shawn Wilder.
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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/2ae5052b-89ba-42f1-ba18-5c1df528680a/0BE2088D-F458-477E-A02C-B9B23C5AFAB9/" 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://esciencenews.com/articles/2008/09/10/in.spiders.size.matters.small.males.are.more.often.meals" href="http://esciencenews.com/articles/2008/09/10/in.spiders.size.matters.small.males.are.more.often.meals" style="font-size: 11px;">esciencenews.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://esciencenews.com/articles/2008/09/10/in.spiders.size.matters.small.males.are.more.often.meals"><H1 class="border-red">In spiders, size matters: Small males are more often meals</H1></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://esciencenews.com/articles/2008/09/10/in.spiders.size.matters.small.males.are.more.often.meals"><DIV class="article-images"><H2 class="border">Related images<BR /><SPAN class="inline-note">(click to enlarge)</SPAN></H2> <DIV class="image-medium"><A title="A female wolf spider, <I>Hogna helluo</I>, consuming a male." rel="lightbox[field-image]" href="http://esciencenews.com/files/images/20080910501870.jpg"><IMG class="image image_medium" title="A female wolf spider, <I>Hogna helluo</I>, consuming a male." alt="A female wolf spider, <I>Hogna helluo</I>, consuming a male." src="http://esciencenews.com/files/imagecache/image_medium/files/images/20080910501870.jpg" /></A><DIV class="caption">Shawn M. Wilder</DIV></DIV> </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://esciencenews.com/articles/2008/09/10/in.spiders.size.matters.small.males.are.more.often.meals">Female spiders are voracious predators and consume a wide range of prey, which sometimes includes their mates. A number of hypotheses have been proposed for why females eat males before or after mating. Researchers Shawn Wilder and Ann Rypstra from Miami University in Ohio found, in a study published in the September issue of the <I>American Naturalist,</I> that the answer may be simpler than previously thought. Males are more likely to be eaten if they are much smaller than females, which likely affects how easy they are to catch.</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;"> </td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/0BE2088D-F458-477E-A02C-B9B23C5AFAB9/blog/" title="blog or email this clip"><img src="http://content6.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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