Arcidae


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In contrast, there is a paucity of information concerning the regulation of gametogenesis by the environment in the Arcidae.
There are, however, contradicting results concerning sex ratios and the expression of maleness and femaleness in other Arcidae.
Reproduksi Kerang Bulu, Anadara antiquata (Linnaeus), Suku Arcidae.
Although there have been many studies of the reproductive cycles of species of Arcidae (Broom 1983, Ito et al.
Pectinidae (Pedum spondyloideum), Arcidae (Barbatia setigera and B.
50 Arcidae Barbatia setigera Anacropora spinosa 7 1.
The spawning pattern of the family Arcidae typically becomes broader with decreasing latitude, and many species including Anadara ovalis, Anadara similis (Adams, 1852), Anadara grandis (Broderip & Sowerby, 1829), and Anadara tuberculosa (Sowerby, 1883) have ripe individuals year round in the warm waters of Florida and Central America (Power et al.
Members of the family Arcidae tend to have equal sex ratios and are dioecious: Anadara antiquata (Toral-Barza & Gomez 1985), Anadara granosa (Pathansali 1966, Broom 1983), Anadara senilis (Broom 1985), Anadara subcrenata (Broom 1985), Anadara trapezia (Broom, 1985), and Anadara tuberculosa (Cruz 1984a, Dzyuba & Maslennikova 1982).
A member of the ark shell family Arcidae, the blood ark, Anadara ovalis (Bruguiere 1789) occurs from Cape Cod, Massachusetts, to the West Indies and Brazil, at depths ranging from the low-tide line to >3 m (Abbott 1974, Anderson et al.
From this synopsis, it would appear that the spawning pattern of the Arcidae family becomes less confined to a single narrow season with decreasing latitude and the associated reduction in temporal fluctuations in temperature and coastal phytoplankton abundance.