The function of the caudal keel inPercina (Percidae)

Abstract

Unique to darters of the subgenusOdontopholis ofPercina andPercina (Imostoma)antesella is the development of a caudal keel in breeding males. The keel is a semicircular extension of the ventral surface of the caudal peduncle and anterior lower caudal fin. The reproductive behavior of species ofPercina implies an adaptive function related to the burial and… (More)
DOI: 10.1007/BF00002185

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