Anal-fin ray morphology indicates sexual maturity in Brevimyrus niger (Teleostei, Mormyridae)

Publication Type:Journal Article
Year of Publication:2016
Authors:Stell, SK, Moller, P
Journal:Journal of Fish Biology
Date Published:Jan-10-2016
Abstract:

This osteological survey of 249 specimens of Brevimyrus niger ranging in size from 44 to 137 mm standard length (LS) demonstrated that developmental changes in anal-fin morphology can serve as a predictor of sexual maturity in this species. Anal-fin ray bases begin to expand when fish reach c. 90 mm LS at which size and above there were roughly equal numbers of individuals observed with expanded and unmodified anal-fin bases, reflecting a 1:1 sex ratio.

URL:http://doi.wiley.com/10.1111/jfb.13163
DOI:10.1111/jfb.13163
Short Title:J Fish Biol
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith