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Heterozygote deficiencies in a cohort of newly settled Mytilus edulis spat

Published online by Cambridge University Press:  11 May 2009

J. E. Fairbrother  and
A. R. Beaumont
J. E. Fairbrother
Affiliation:
School of Ocean Sciences, University of Wales Bangor, Menai Bridge, Gwynedd, LL59 5EH
A. R. Beaumont
Affiliation:
School of Ocean Sciences, University of Wales Bangor, Menai Bridge, Gwynedd, LL59 5EH
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Extract

A cohort of newly settled Mytilus edulis (L.) (Mollusca: Bivalvia) spat (mean shell length 530 µm) was collected from red filamentous algae at a site on the North Wales coast. After a period of growth in the laboratory, cellulose acetate and starch gel electrophoresis were used to investigate genotype frequencies at the Gpi, Odh, Lap, Pgm, Idh and Mpi loci. Individual testing of each locus, using the X2 test revealed significant deficiencies of heterozygotes at the Pgm, Mpi and Idh loci. However, further testing using a sequential Bonf erroni test, designed to assess the probability of observing at least one significant result from a number of tests by chance alone, revealed that only the deficiency of heterozygotes at Pgm and Mpi loci was significant at the table-wide 95% level. Since post-collection mortality was <3%, these heterozygote deficits must have existed at the time of collection. The conclusion drawn is that heterozygote deficiencies in mussels are generated during the larval stage or at early settlement.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 73 , Issue 3 , August 1993 , pp. 647 - 653
Copyright
Copyright © Marine Biological Association of the United Kingdom 1993

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References

Ahmad, M., Skibinski, D. O. F. & Beardmore, J. A., 1977. An estimate of the amount of genetic variation in the common mussel Mytilus edulis. Biochemical Genetics, 15, 833–846.CrossRefGoogle ScholarPubMed
Beaumont, A. R., 1991. Genetic studies of laboratory reared mussels, Mytilus edulis: heterozygote deficiencies, heterozygosity and growth. Biological Journal of the Linnean Society of London, 44, 273–285.CrossRefGoogle Scholar
Beaumont, A. R., Beveridge, C. M., Barnet, E. A., Budd, M. D. & Smyth-Chamosa, M., 1988. Genetic studies of laboratory reared Mytilus edulis. I. Genotype specific selection in relation to salinity. Heredity. London, 61, 389–400.CrossRefGoogle Scholar
Borsa, P., Zainuri, M. & Delay, B., 1991. Heterozygote deficiency and population structure in the bivalve Ruditapes decussatus. Heredity, London, 66, 1–8.CrossRefGoogle Scholar
Chakraborty, R., 1989. Can molecular imprinting explain heterozygote deficiency and hybrid vigour? Genetics, 122, 113–117.CrossRefGoogle Scholar
Gaffney, P. M., 1993. Heterosis and heterozygote deficiencies in marine bivalves: more light? In Genetics and evolution of aquatic organisms (ed. Beaumont, A. R.), in press. London: Chapman & Hall.Google Scholar
Gaffney, P. M., Scott, T. M., Koehn, R. K. & Diehl, W. J., 1990. Interrelationships of heterozygosity, growth rate and heterozygote deficiencies in the coot clam, Mulinia lateralis. Genetics, 124, 687–699.CrossRefGoogle ScholarPubMed
Gosling, E. M., 1992. Genetics of Mytilus. In The mussel Mytilus: ecology, physiology, genetics and culture (ed. Gosling, E. M.), pp. 309–382. Amsterdam: Elsevier.Google Scholar
Gosling, E. M. & McGrath, D., 1990. Genetic variability in exposed-shore mussels, Mytilus spp., along an environmental gradient. Marine Biology, 104, 413–418.CrossRefGoogle Scholar
Gosling, E. M. & Wilkins, N. P., 1985. Genetics of settling cohorts of Mytilus edulis (L.): preliminary observations. Aquaculture, 44, 115–123.CrossRefGoogle Scholar
Holm, S., 1979. A simple sequentially rejective multiple test procedure. Scandinavian Journal of Statistics, 6, 65–70.Google Scholar
King, P. A., McGrath, D. & Gosling, E. M., 1989. Reproduction and settlement of Mytilus edulis on an exposed rocky shore in Galway Bay, west coast of Ireland. Journal of the Marine Biological Association of the United Kingdom, 69, 355–365.CrossRefGoogle Scholar
Mallet, A. L., Zouros, E., Gartner-Kepkay, K. E., Freeman, K. R. & Dickie, L. M., 1985. Larval viability and heterozygote deficiency in populations of marine bivalves: evidence from pair matings of mussels. Marine Biology, 87, 165–172.CrossRefGoogle Scholar
Rice, W. R., 1989. Analysing tables of statistical tests. Evolution, 43, 223–225.CrossRefGoogle Scholar
Selander, R. K., 1970. Behavior and genetic variation in natural populations. American Zoologist, 10, 53–66.CrossRefGoogle ScholarPubMed
Skibinski, D. O. F., Beardmore, J. A. & Cross, T. F., 1983. Aspects of the population genetics of Mytilus (Mytilidae; Mollusca) in the British Isles. Biological Journal of the Linnean Society of London, 19, 137–183.CrossRefGoogle Scholar
Thiriot-Quievreux, C., Noel, T., Bougrier, S. & Dallot, S., 1988. Relationships between aneuploidy and growth rate in pair matings of the oyster Crassostrea gigas. Aquaculture, 75, 89–96.CrossRefGoogle Scholar
Wright, S., 1969. Evolution and the genetics of populations. Vol. 2. The theory of gene frequencies. Chicago: University of Chicago Press.Google Scholar
Zouros, E. & Foltz, D. W., 1984a. Possible explanations of heterozygote deficiency in bivalve molluscs. Malacologia, 25, 583–591.Google Scholar
Zouros, E. & Foltz, D. W., 1984b. Minimal selection requirements for the correlation between heterozygosity and growth, and for the deficiency of heterozygotes, in oyster populations. Developmental Genetics, 4, 393–405.CrossRefGoogle Scholar