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Evolution of an adaptive behavior and its sensory receptors promotes eye regression in blind cavefish

Overview of attention for article published in BMC Biology, December 2012
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Title
Evolution of an adaptive behavior and its sensory receptors promotes eye regression in blind cavefish
Published in
BMC Biology, December 2012
DOI 10.1186/1741-7007-10-108
Pubmed ID
Authors

Masato Yoshizawa, Yoshiyuki Yamamoto, Kelly E O'Quin, William R Jeffery

Abstract

How and why animals lose eyesight during adaptation to the dark and food-limited cave environment has puzzled biologists since the time of Darwin. More recently, several different adaptive hypotheses have been proposed to explain eye degeneration based on studies in the teleost Astyanax mexicanus, which consists of blind cave-dwelling (cavefish) and sighted surface-dwelling (surface fish) forms. One of these hypotheses is that eye regression is the result of indirect selection for constructive characters that are negatively linked to eye development through the pleiotropic effects of Sonic Hedgehog (SHH) signaling. However, subsequent genetic analyses suggested that other mechanisms also contribute to eye regression in Astyanax cavefish. Here, we introduce a new approach to this problem by investigating the phenotypic and genetic relationships between a suite of non-visual constructive traits and eye regression.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 124 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 4 3%
United Kingdom 2 2%
Brazil 2 2%
Italy 1 <1%
Unknown 115 93%

Demographic breakdown

Readers by professional status Count As %
Researcher 22 18%
Student > Bachelor 21 17%
Student > Ph. D. Student 19 15%
Professor > Associate Professor 15 12%
Student > Master 11 9%
Other 21 17%
Unknown 15 12%
Readers by discipline Count As %
Agricultural and Biological Sciences 66 53%
Biochemistry, Genetics and Molecular Biology 14 11%
Neuroscience 6 5%
Psychology 3 2%
Medicine and Dentistry 3 2%
Other 9 7%
Unknown 23 19%