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Morphological maturity and allometric growth in the squat lobster Munida rugosa

Published online by Cambridge University Press:  15 April 2009

Thomas Claverie  and
I. Philip Smith
Thomas Claverie*
Affiliation:
University Marine Biological Station Millport, Isle of Cumbrae, KA28 0EG, Scotland, United Kingdom
I. Philip Smith
Affiliation:
University Marine Biological Station Millport, Isle of Cumbrae, KA28 0EG, Scotland, United Kingdom
*
Correspondence should be addressed to: T. Claverie, Department of Integrative Biology, University of California, Berkeley, CA, 94720, USA email: [email protected]
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Abstract

Size at the onset of sexual maturity was determined in Munida rugosa based on allometric growth of chelipeds and abdomen, and on the proportion of ovigerous females. The variability of three different measurements of carapace length (CL) used previously for M. rugosa was also evaluated to minimize measurement error. Both sexes had symmetrical cheliped length and allometric cheliped growth over the size-range investigated, but males showed increased allometry beyond 22 mm CL. Females had greater positive allometry in abdomen width than males, but their size at maturity could not be precisely determined because sampled females were too large.

Keywords

Munida rugosaallometrymaturitycheliped lengthabdomen widthsegmental regression
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 89 , Issue 6 , September 2009 , pp. 1189 - 1194
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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