Author:
He Shan,Li Ling,Lv Li-Yuan,Cai Wen-Jing,Dou Ya-Qi,Li Jiao,Tang Shu-Lin,Chen Xu,Zhang Zhen,Xu Jing,Zhang Yan-Peng,Yin Zhan,Wuertz Sven,Tao Ya-Xiong,Kuhl Heiner,Liang Xu-Fang
Abstract
AbstractMandarin fishes (Sinipercidae) are piscivores that feed solely on live fry. Unlike higher vertebrates, teleosts exhibit feeding behavior driven mainly by genetic responses, with no modification by learning from parents. Mandarin fishes could serve as excellent model organisms for studying feeding behavior. We report a long-read, chromosomal-scale genome assembly for Siniperca chuatsi and genome assemblies for Siniperca kneri, Siniperca scherzeri and Coreoperca whiteheadi. Positive selection analysis revealed rapid adaptive evolution of genes related to predatory feeding/aggression, growth, pyloric caeca and euryhalinity. Very few gill rakers are observed in mandarin fishes; analogously, we found that zebrafish deficient in edar had a gill raker loss phenotype and a more predatory habit, with reduced intake of zooplankton but increased intake of prey fish. Higher expression of bmp4, which could inhibit edar expression and gill raker development through binding of a Xvent-1 site upstream of edar, may cause predatory feeding in Siniperca.
Funder
National Natural Science Foundation of China
Deutsche Forschungsgemeinschaft
China Agriculture Research System
Publisher
Springer Science and Business Media LLC
Subject
General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,Medicine (miscellaneous)
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