[Estimation of fertility and quality of oocytes emitted by the clam Ruditapes decussatus (Linnaeus 1758) during experimental inductions].
Experimental inductions were carried out on some genitors of clams Ruditapes decussatus to obtain sexual emissions and estimate the fecondity of this species. The genitors were collected from two sites of tunisian littoral. Higher percent of oocytes was found in summer with a maximum of 52 x 10(4) oocytes in Gargour (Golf of Gabès) against 45 x 10(4) in Menzel-Jemil (Lagoon of Bizerte). The observation under the electronic microscope of free oocytes allowed us to subdivised them in three groupes: immatures, matures and atretics. Only mature oocytes were susceptible to be feconded and underwent larval development with unknown proportion.
Trigui-el Menif
N
N
Laboratoire de Biologie Animale, Faculté des Sciences de Tunis, Tunis, Tunisie.
Le-Pennec
M
M
Maamouri
F
F
D000818:Animals; D049872:Bivalvia / Q000254:growth & development*; D005298:Fertility / Q000502:physiology*; D005618:Fresh Water; D008854:Microscopy, Electron; D009865:Oocytes / Q000145:classification / Q000502:physiology* / Q000648:ultrastructure; D010062:Ovulation Induction; D012621:Seasons; D014416:Tunisia; D014818:Vitellogenesis / Q000502:physiology
Estimation de la fécondité et de la qualité des ovocytes émis par la palourde Ruditapes decussatus (Linné 1758) lors d'inductions expérimentales.