Repeatability of correlations between heterozygosity, growth and survival in a natural population of the hard clam Mercenaria mercenaria L.

J. Pecon Slattery, R. A. Lutz, R. C. Vrijenhoek

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

A single population of the hard clam Mercenaria mercenaria was examined for repeatability of correlations between multilocus heterozygosity and fitness-related traits. Clams were collected in June 1986. October 1987, and June 1988 from a site at Shark River Inlet, New Jersey. A large sample taken in 1988 gave the best representation of all age classes, particularly new recruits. Genetic variation was estimated using nine protein-encoding gene loci. All three samples were deficient in heterozygotes; however, deficiencies were heterogeneous across loci, providing no evidence for systematic inbreeding. Although multilocus heterozygosity was not associated with growth rate in any of the three samples, the large 1988 sample revealed a significant association with age. A resampling analysis of the 1988 data set revealed that detection of weak heterozygosity-age correlations was profoundly influenced by sample size and dependent upon adequate representation of young age classes in the population.

Original languageEnglish (US)
Pages (from-to)209-224
Number of pages16
JournalJournal of Experimental Marine Biology and Ecology
Volume165
Issue number2
DOIs
StatePublished - Jan 18 1993

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

Keywords

  • Bivalve
  • Growth
  • Hard clam
  • Heterozygosity
  • Mercenaria, Survival

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