Sexual dimorphism of the flounder Bothus robinsi (Pisces: Bothidae)
Version of Record online: 31 MAR 2004
Copyright © 2004 Wiley-Liss, Inc.
Journal of Morphology
Volume 260, Issue 2, pages 165–171, May 2004
How to Cite
Kobelkowsky, A. (2004), Sexual dimorphism of the flounder Bothus robinsi (Pisces: Bothidae). J. Morphol., 260: 165–171. doi: 10.1002/jmor.10218
- Issue online: 31 MAR 2004
- Version of Record online: 31 MAR 2004
- sexual dimorphism;
- reproductive system;
The anatomical organization of the reproductive system of the flounder, Bothus robinsi, is similar to other fish in the order Pleuronectiformes. Accentuated, external secondary sexual characters are observed in males such as increased body length, larger left pectoral fin, and greater interorbital distance. As a qualitative character, the rostral spine, which is part of the maxillary bone, is pronounced. The interorbital distance implies noticeable internal sexual differences, such as the broadening of the left frontal and lateral ethmoid bones, and a greater length of the oblique muscles of both eyes, the optic nerves, and the left olfactory nerve. Five male specimens examined had female external secondary sexual characters. J. Morphol. 260:165–171, 2004. © 2004 Wiley-Liss, Inc.