Mating behavior and cytogenetical aspects of sex-inversion in the fishCoris julis L. (Labridae, Teleostii)

• DOI: 10.1007/bf01972285
• Publication Date: 2005-08-03T12:24:48Z
• Authors: B. Duchac; F. Huber; Hj. Müller; D. Senn
• Keywords: 0301 basic medicine; 03 medical and health sciences

It was observed that in the fishCoris julis L., in its natural environment, both primary and secondary males take part in reproduction. Chromosome studies showed 23 homologous chromosome pairs, which are identical in males and females, and a variable 24th pair. The heteromorphism of this pair is identical in secondary males and in the majority of females; these are presumably the females that can undergo sex inversion. Primary males show a different heteromorphism of the same pair.