Ibarra, A.M., Ramirez, J.L., Garcia, G.A.-1997
Aquaculture Research, 28 (6): 443-451
Abstract:
Two populations of catarina scallop, Argopecten ventricosus (= circularis) (Sowerby II, 1842) were evaluated for their larval growth and survival responses to different stocking densities. Larvae from the Magdalena population had a significantly higher growth but equal survival at a density of 10 larvae/ml, although survival was lower at higher densities.
The differing response of these two populations to increased stocking densities is explained as a possible consequence of different population adaptations related to behavioral and physiological mechanisms. The importance of establishing optimum stocking densities for molluscan larvae is stressed in two contexts: maximizing growth and survival for different populations when artificially reared, and understanding the effect of stocking densities on phenotypes variance, especially during the course of genetic studies.
(Centro de Investigaciones Biologicas del Nordeste S.C., La Paz, B.C.S., Mexico)
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