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Unfertilized Oocytes in Streptocephalids: Resorbed or Released?
GOPAL MURUGAN
Alejandro Manuel Maeda Martínez
Acceso Abierto
Atribución-NoComercial-SinDerivadas
URL: https://academic.oup.com/jcb/article/16/1/54/2418764?searchresult=1
DOI: 10.1163/193724096X00270
ISSN: 1937-240X
"Short interval monitoring of isolated females of Streptocephalus dichotomus Baird, S. proboscideus(Frauenfeld), and S. torvicornis (Waga) revealed no resorption of unfertilized oocytes in the lateral pouches of the oviducts or in the ovisac. Oocytes expelled by the female disintegrate in the medium. This finding is in disagreement with earlier studies on S. dichotomus and S. proboscideus, but corroborates findings on S. vitreus (Brauer) and S. rubricaudatus (Klunzinger). Light and electron microscopic studies of unfertilized and fertilized oocytes show polar-body extrusion, vitelline-membrane formation, and egg-shell deposition in fertilized oocytes only. The streptocephalids studied here differ, in this respect, from two other anostracans, Tanymastix and Artemia, where unfertilized oocytes develop a vitelline membrane, and sometimes an egg shell."
Oxford University Press
1996
Artículo
Journal of Crustacean Biology
Inglés
CITOLOGÍA ANIMAL
Versión publicada
publishedVersion - Versión publicada
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