Fig. 6From: Reproductive cycle and gonad development of the Northern Argentinean Mesodesma mactroides (Bivalvia: Mesodesmatidae)Monthly oocyte size-frequency distribution of M. mactroides collected at Santa Teresita. The abrupt decreases of oocyte modal sizes in August/December 2005 and in July/December 2006 indicate two spawning events per year (dotted arrows). N number of oocytesBack to article page