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Larval and early postlarval shell morphology of several venerid clams

Published online by Cambridge University Press:  11 May 2009

J. G. Goodsell
Affiliation:
Department of Aquaculture, Fisheries and Wildlife, Clemson University, Clemson, South Carolina 29634–0362, USA
S. C. Fuller
Affiliation:
MEC Analytical Systems, 2433 Impala Drive, Carlsbad, California 92008, USAM
A. G. Eversole
Affiliation:
Department of Aquaculture, Fisheries and Wildlife, Clemson University, Clemson, South Carolina 29634–0362, USA
M. Castagna
Affiliation:
College of William and Mary, School of Marine Science, Virginia Institute of Marine Science, Wachapreague, Virginia 23480, USA
R. A. Lutz
Affiliation:
Institute of Marine and Coastal Sciences, Rutgers University, PO Box 231, New Brunswick, New Jersey 08903, USA

Extract

Shell morphological features of the larvae and early postlarvae of species from two venerid (Mollusca: Lamellibranchia) subfamilies, Chioninae (Mercenaria mercenaria, M. campechiensis, M. campechiensis texana and Chionecancellata) and Pitarinae (Pitar morrhuanus), were examined using scanning electron microscopy. A single elongated fold on the anterior half of the left valve became more robust and a small fold in the centre of the right valve increased in length along the hinge line throughout the larval period. A MANOVA of shell length, shell height and provinculum length detected statistically significant (P) differences between the larval shells of Chioninae and Pitarinae, and within the Mercenaria.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1992

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