Morphology and development of the female reproductive system of Astacus leptodactylus (Eschscholtz, 1823)(Decapoda, Astacidae)

Authors : Çağdaş ÜNİŞ, Melike Belkız ERKAN

Pages : 775-784

Doi:10.3906/sag-1207-115

View : 26 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, the morphology and development of the female reproductive system in Astacus leptodactylus insert ignore into journalissuearticles values(Eschscholtz, 1823); were investigated. The trilobed ovary with 2 anterior lobules and only 1 posterior lobule lie dorsally to the gut on the large hepatopancreas. The oviduct extends laterally from the middle part of the ovary and its innermost layer produces 2 different types of secretion. The outermost layer of the ovary consists of a single layer of thin epithelium and a connective tissue under it. Longitudinally and annularly located collagen fibers are present in the connective tissue, and just under it lies a single layer of follicle cells, which surround the oocytes. The germarium containing oogonia is concentrated in the center of the ovarian lobe as a central germinal cluster.
Keywords : crayfish, reproductive biology, ovary, Astacidae