Seasonal setting patterns of five species of bivalves in the Tred Avon River, Maryland
Shaw, W.N. (1965). Seasonal setting patterns of five species of bivalves in the Tred Avon River, Maryland. Chesapeake Science 6(1): 33-37. https://dx.doi.org/10.2307/1350620
In: Chesapeake Science. Chesapeake Biological Laboratory: Solomons, Md.. ISSN 0009-3262; e-ISSN 2168-8060, more
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| Keywords |
Brachidontes recurvus (Rafinesque, 1820) [WoRMS]; Ischadium recurvum (Rafinesque, 1820) [WoRMS]; Macoma balthica (Linnaeus, 1758) [WoRMS]; Macoma phenax Dall, 1900 [WoRMS]; Mulinia lateralis (Say, 1822) [WoRMS]; Mya arenaria Linnaeus, 1758 [WoRMS]
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| Abstract |
Bottle collectors were placed in the Tred Avon River, Maryland, during 1961, 1962, and 1963, to obtain information on the setting of bivalves. The bottle collector was an economical and efficient tool for obtaining and studying newly metamorphosed invertebrates in shallow estuarine waters. Seven bivalve species were caught on or in these bottles and the seasonal setting patterns of five species were observed. Of these species,Mya arenaria and Macoma balthica appeared to have dual spawning cycles each year, while Brachidontes recurvus, Macoma phenax, and Mulinia laterali had a single annual spawning cycle. |
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