Abstract
The swimming performance of the saucer scallop Amusium balloti (Bernardi) was recorded from tests conducted in a natural environment in Shark Bay, Western Australia, in June, July and November 1984 and June and September 1985. Unlike all other scallops described in the literature, the swimming performance (both speed and distance) of A. balloti increases with size. Maximum distance swum in a single swimming event was 23.1 m, while the maximum cumulative distance swum (four swimming events) was 30.8 m. Swimming speeds for larger scallops were generally between 0.8 and 1.0 m s-1 (1.6 and 2.0 knots), with a maximum speed of 1.6 m s-1 (3.1 knots). Variations in swimming performance and response times with size and season are probably the major cause of variations in the scallop's vulnerability to fishing gear.
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Communicated by G. F. Humphrey, Sydney
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Joll, L.M. Swimming behaviour of the saucer scallop Amusium balloti (Mollusca: Pectinidae). Marine Biology 102, 299–305 (1989). https://doi.org/10.1007/BF00428481
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DOI: https://doi.org/10.1007/BF00428481