Accumulation cyclique de fer et de quelques autres éléments dans le testicule deLittorina littorea(L.) (Gastéropode Prosobranche)

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Abstract
Iron, the presence of which can be revealed by histochemical techniques and microanalysis X, accumulates in the testis of Littorina littorea (L.). Its accumulation varies in relation to the annual cycle. The highest concentration occurs during the involution period (late summer) and is lowest during gametogenesis (early winter). Besides iron, S, P, Ca, Cl and sometimes Mg and F are found. These elements are contained in lysosomes of “epithelial cells” which develop in the testis following the reproductive stage.