Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-09T16:49:44.294Z Has data issue: false hasContentIssue false

Leydig cells in Myleus ternetzi testes

Published online by Cambridge University Press:  15 January 1989

Maurice Loir
Affiliation:
INRA, Physiologie des Poissons, Campus de Beaulieu, 35042 Rennes Cedex, France
Anne Margeridon
Affiliation:
INRA, Physiologie des Poissons, Campus de Beaulieu, 35042 Rennes Cedex, France
Chantal Cauty
Affiliation:
INRA, Physiologie des Poissons, Campus de Beaulieu, 35042 Rennes Cedex, France
Get access

Abstract

Males of Myleus ternetzi, at various maturation stages were netted in a French Guyana river. Testes were histologically and ultrastructurally analysed. Leydig cells were always present in large numbers. In mature or almost mature testes, they were characterized by a large spherical nucleus and an extensively developed smooth endoplasmic reticulum (SER) composed of very narrow tightly packed tubules. In regressed testes, most of the Leydig cells had a smaller nucleus with an irregular shape, a disorganized SER and the fine structure of the mitochondria was greatly affected. These changes would reflect different phases throughout a metabolic cycle in relation to spermatogenesis.

Type
Research Article
Copyright
© IFREMER-Gauthier-Villars, 1989

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)