Morphometry, frequency and ultrastructure of male germ cells in morphotypes of the freshwater prawn Macrobrachium amazonicum (Decapoda: Palaemonidae)

Autor:	Maria Auxiliadora Pantoja Ferreira, Gicelle M.F. Silva, Yanne A. Mendes, Liziane A. B. Gonçalves, Renata S. Oliveira, Ivana Kerly S. Viana, Rossineide Martins da Rocha
Rok vydání:	2019
Předmět:	0106 biological sciences Germinal epithelium Claw biology Decapoda Spermiogenesis 010607 zoology Anatomy biology.organism_classification 010603 evolutionary biology 01 natural sciences Prawn Ultrastructure Animal Science and Zoology Spermatogenesis Palaemonidae
Zdroj:	Zoologischer Anzeiger. 278:46-56
ISSN:	0044-5231
DOI:	10.1016/j.jcz.2018.11.002
Popis:	Males of the freshwater prawn species, Macrobrachium amazonicum, have been staged histologically into morphotypes, Translucent claw (TC), Cinnamon claw (CC) and Green claw (GC). However, information on reproductive system anatomy and spermatogenesis among morphotypes is scarce. Our aim was to describe the frequency of spermatogenic cells, morphometry of seminiferous tubules and spermatogenic cells, and spermiogenesis to establish any differences among morphotypes. Specimens were captured and sexed. Testes were dissected, processed, and analyzed using light, transmission, and scanning electron microscopy. Macroscopically, testes were symmetrical, elongated, and translucid, with long vasa deferentia ending in ampoules. Histologically, testes exhibited seminiferous tubules with the germinal epithelium containing male germ cells in different stages of development and supporting cells. The diameter of seminiferous tubules was largest (P
Databáze:	OpenAIRE
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