[Role of calcium in the reinitiation of oocyte meiosis in Sabellaria alveolata (L.) (Annelida, Polychaeta)].
Meiotic maturation is triggered by ionophores A 23187 and X 537 A, even in absence of extracellular calcium. CaMg free medium alone initiates 100% maturations while Ca free SW triggers varying percentages of maturation and Mg free SW has no effect.
D000818:Animals; D000001:Calcimycin / Q000494:pharmacology; D002118:Calcium / Q000494:pharmacology*; D005260:Female; D007832:Lasalocid / Q000494:pharmacology; D008540:Meiosis / Q000187:drug effects*; D009550:Nigericin / Q000494:pharmacology; D009865:Oocytes / Q000187:drug effects / Q000502:physiology*; D010063:Ovum / Q000502:physiology*; D011077:Polychaeta; D014634:Valinomycin / Q000494:pharmacology
D014634:Valinomycin; D000001:Calcimycin; D009550:Nigericin; D002118:Calcium; D007832:Lasalocid
Mise en évidence du rôle du calcium dans la réinitiation de la méiose des ovocytes de Sabellaria alveolata (L.) (annélide polychète).