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Trade-offs in Cavefish Sensory Capacity

Overview
Journal BMC Biol
Publisher Biomed Central
Specialty Biology
Date 2013 Jan 26
PMID 23347449
Citations 4
Authors
Helen Gunter
Axel Meyer
Affiliations
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Abstract

In caves one repeatedly finds strikingly convergent patterns of evolution in diverse sets of organisms involving 'regressive' traits such as the loss of eyes and pigmentation. Ongoing debate centers around whether these regressive traits arise as the result of neutral evolutionary processes, or rather by natural selection of 'constructive' traits that arise at the expense of eyes and pigmentation. Recent research on cavefish points to the latter, suggesting that the 'constructive' trait vibrational attractive behavior and the reduction of eye size may share a common genetic basis.See research article http://www.biomedcentral.com/1741-7007/10/108.

Citing Articles

Parallel evolution of regressive and constructive craniofacial traits across distinct populations of Astyanax mexicanus cavefish.

Powers A, Berning D, Gross J J Exp Zool B Mol Dev Evol. 2020; 334(7-8):450-462.

PMID: 32030873 PMC: 7415521. DOI: 10.1002/jez.b.22932.

Evolution by gene loss.

Albalat R, Canestro C Nat Rev Genet. 2016; 17(7):379-91.

PMID: 27087500 DOI: 10.1038/nrg.2016.39.

Regressive evolution of the arthropod tritocerebral segment linked to functional divergence of the Hox gene labial.

Pechmann M, Schwager E, Turetzek N, Prpic N Proc Biol Sci. 2015; 282(1814).

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Eye regression in blind Astyanax cavefish may facilitate the evolution of an adaptive behavior and its sensory receptors.

Borowsky R BMC Biol. 2013; 11:81.

PMID: 23844714 PMC: 3726320. DOI: 10.1186/1741-7007-11-81.

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