Gonadal cycle in an<Emphasis Type="Italic"> Adelomelon brasiliana</Emphasis> (Neogastropoda: Volutidae) population of Buenos Aires province,Argentina |
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| Authors: | Email author" target="_blank">M?CledónEmail author W?Arntz P?E?Penchaszadeh |
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| Institution: | (1) Alfred Wegener Institute for Polar and Marine Research, Columbusstr., 27568 Bremerhaven, Germany;(2) Lab. 19 Invertebrados I, Depto. Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab II, C1428EHA Buenos Aires, Argentina;(3) CONICET—Museo Argentino de Ciencias Naturales  B. Rivadavia , Av. Angel Gallardo 470, 1405 Buenos Aires, Argentina |
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| Abstract: | The reproductive season of the Adelomelon brasiliana population of Mar del Plata extends from September to April (austral spring and summer), showing synchronisation with water temperature. Adult gonad state is related to shell-free wet mass. Oocytes reach 200  m in diameter before spawning. In autumn, a resting phase begins, when no new oocytes develop and the non-spawned ones undergo reabsorption. Gonadic development begins during the early winter, when new previtellogenic oocytes can be observed through histology. The long reproductive season would increase the ability of the species to recover from harvesting.Communicated by O. Kinne, Oldendorf/Luhe |
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