how evolutionary mechanisms yield biological diversity

Discussions on cichlid behaviour in nature & captivity.

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Lisachromis
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how evolutionary mechanisms yield biological diversity

Post by Lisachromis » Wed Dec 23, 2009 8:05 am

An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.

In research published in the December 21, 2009 issue of the journal PLoS Biology, Assistant Professor Karen Carleton, together with post-doctoral associate Chris Hofmann and graduate student Kelly O'Quin, in the University of Maryland Department of Biology, and collaborators Justin Marshall, University of Queensland; Tom Cronin, University of Maryland, Baltimore County (UMBC); and Ole Seehausen, University of Bern; describe how over 60 species of cichlid fish from Lake Malawi and Lake Victoria have adapted their visual sensitivity in response to specific ecological factors, including what they eat and the clarity of the water in which they swim.
http://www.eurekalert.org/pub_releases/ ... 122209.php


For a copy of the paper go to: http://www.plosbiology.org/article/info ... io.1000266

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