Article
Histology, ultrastructure, and in vitro steroidogenesis of the testes of two male phenotypes of the protogynous fish, Thalassoma duperrey (Labridae).
General and comparative endocrinology - 1 Aug 1991
Hourigan T F, Nakamura M, Nagahama Y, Yamauchi K, Grau E G
Abstract excerpt
Species with multiple male reproductive phenotypes may serve as model systems to study the relationship between form and function in reproduction. Large and small males of the protogynous wrasse, Thalassoma duperrey differ in reproductive behavior, gonad morphology, and gonadal steroid production. Initial-phase (IP) males are small males that spawn in groups. They have large testes with high sperm production....
Topics
- Androgens
- Animals
- Body Constitution
- Cross Reactions
- Fishes
- Male
- Microscopy, Electron
- Organ Size
- Phenotype
- Radioimmunoassay
- Steroids