Baron Jérôme. (1992). Reproductive cycles of the bivalve molluscs Atactodea striata (Gmelin), Gafrarium tumidum Röding and Anadara scapha (L.) in New Caledonia. Australian Journal of Marine and Freshwater Research, 43, p. 393-402.
Titre du document
Reproductive cycles of the bivalve molluscs Atactodea striata (Gmelin), Gafrarium tumidum Röding and Anadara scapha (L.) in New Caledonia
Année de publication
1992
Type de document
Article
Auteurs
Baron Jérôme
Source
Australian Journal of Marine and Freshwater Research, 1992,
43, p. 393-402
Monthly samples of the bivalves Atactodea striata, Gafrarium tumidum and Anadara scapha were collected over 1 year from the littoral zone on the South-Western coast of New Caledonia. A. striata and G. tumidum were studied by macroscopic examination of gonads and microscopic examination of gamete smears. For A. scapha, only microscopic examination was use. A striata and G. tumidum are dioecious, whereas A. scapha is a protandric hermaphrodite. Sexual differentiation begins at a shell lenght of 20 mm for A. striata and G. tumidum aand 22 mm for A. scapha. The three species have an extended or continuous breeding period, although, in all three, sexual activity peaks in the hot season. (Résumé d'auteur)
