How could fully scaled carps appear in natural waters in Madagascar?
|Author(s)||Hubert Jean-Noel1, Allal Francois2, Hervet Caroline1, Ravakarivelo Monique3, Jeney Zsigmond4, Vergnet Alain5, Guyomard Rene1, Vandeputte Marc1, 5|
|Affiliation(s)||1 : Univ Paris Saclay, GABI, INRA, AgroParisTech, F-78350 Jouy En Josas, France.
2 : IFREMER, UMR MARBEC 9190, F-34250 Palavas Les Flots, France.
3 : DRZV, FOFIFA, Antananarivo, Madagascar.
4 : NAIK HAKI, H-5540 Szarvas, Hungary.
5 : IFREMER, F-34250 Palavas Les Flots, France.
|Source||Proceedings Of The Royal Society B-biological Sciences (0962-8452) (Royal Soc), 2016-08 , Vol. 283 , N. 1837 , P. 20160945 (1-8)|
|WOS© Times Cited||1|
|Keyword(s)||evolution, mutation compensation, heritability|
|Abstract||The capacity of organisms to rapidly evolve in response to environmental changes is a key feature of evolution, and studying mutation compensation is a way to evaluate whether alternative routes of evolution are possible or not. Common carps (Cyprinus carpio) carrying a homozygous loss-of-function mutation for the scale cover gene fgfr1a1, causing the 'mirror' reduced scale cover, were introduced in Madagascar a century ago. Here we show that carps in Malagasy natural waters are now predominantly covered with scales, though they still all carry the homozygous mutation. We also reveal that the number of scales in mutated carps is under strong polygenic genetic control, with a heritability of 0.49. As a whole, our results suggest that carps submitted to natural selection could evolve a wild-type-like scale cover in less than 40 generations from standing polygenic genetic variation, confirming similar findings mainly retrieved from model organisms.|