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Interspecific Comparisons of Genetic Population Structure in Members of the Jaera Albifrons Species Complex

  • Gary R. Carvalho (a1) and Stuart B. Piertney (a1)

Extract

Marked genetic differentiation in the intertidal isopod, Jaera albifrons (Crustacea: Isopoda) has been shown to occur on a scale of just a few metres on British shores. Allozyme electrophoresis at 21 enzyme-coding loci has been employed to examine genetic structure in other UK members of the complex (Jaera forsmani, J. ischiosetosa, J. praehirsuta), and explore the relationship between genetic diversity and perceived niche-width. Comparisons were made with the nonsibling species J. nordmanni. Three subpopulations of each species taken from each of two shores on Anglesey, UK (subpopulations N=30) were assayed for electrophoretic variability. Data from 11 polymorphic loci (P0·95) demonstrated marked genetic differentiation in all populations of J. albifrons and J. praehirsuta, and on one shore for each of J. ischiosetosa and J. nordmanni, with J. praehirsuta (GST=0·207) and J. albifrons (GST=0·121) showing the highest genetic differentiation. In contrast, J. forsmani exhibited population homogeneity on both shores studied. Genetic diversity ranged markedly across species (H0=0·165—0·040), with the two most widely distributed species, J. albifrons (H0=0·135) and J. ischiosetosa (Ho=0·165) exhibiting the highest genetic variability, providing support for the niche-width variation hypothesis. Data indicate that although habitat fragmentation and direct development is associated with microgeographic differentiation in Jaera spp., localized factors such as habitat continuity and exposure to water movements determines the magnitude of such effects.

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Ayala, F.J. & Valentine, J.W., 1979. Genetic variability in the pelagic environment: a paradox? Ecology, 60, 2429.
Carvalho, G.R., 1989a. Genetic and ecological differentiation in the Jaera albifrons species complex. Report prepared for the Natural Environmental Research Council, UK, pp. 82. [Unpublished.]
Carvalho, G.R., 1989b. Microgeographic genetic differentiation and dispersal capacity in the intertidal isopod, Jaera albifrons Leach. In Reproduction, genetics and distribution of marine organisms. 23rd European Marine Biology Symposium, University of Wales, Swansea, 5–9 September 1988 (ed. J.S., Ryland and P.A., Tyler), pp. 265271. Fredensborg: Olsen & Olsen.
Chakraborty, R., 1980. Gene diversity analysis in nested subdivided populations. Genetics, 96, 721723.
Guo, S.W. & Thompson, E.A., 1992. Performing the exact test of Hardy-Weinberg proportions for multiple alleles. Biometrics, 48, 361372.
Harris, H. & Hopkinson, D.A., 1976. Handbook of enzyme electrophoresis in human genetics. Amsterdam: North Holland Publishing Company.
Hedrick, J., 1986. Genetic polymorphism in heterogeneous environments: a decade later. Annual Reviews in Ecology and Systematics, 17, 535566.
Jones, M.B., 1972a. Osmoregulation in the Jaera albifrons group of species (Isopoda, Asellota). Journal of the Marine Biological Association of the United Kingdom, 52, 419427.
Jones, M.B., 1972b. Effects of salinity on the survival of the Jaera albifrons Leach group of species (Crustacea: Isopoda). Journal of Experimental Marine Biology and Ecology, 9, 231237.
Jones, M.B. & Naylor, E., 1971. Breeding and bionomics of the British members of the Jaera albifrons group of species (Isopoda: Asellota). Journal of Zoology, 165, 183199.
Knowlton, N. & Jackson, J., 1993. Inbreeding and outbreeding in marine invertebrates. In The natural history of inbreeding and outbreeding (ed. N.W., Thornhill), pp. 200249. Chicago: University of Chicago Press.
Lavie, B., Achituv, Y. & Nevo, E., 1993. The niche-width variation hypothesis reconfirmed. Validation by genetic diversity in the sessile intertidal cirripedes Chthamalus stellatus and Euraphia depressa (Crustacea, Chthamalidae). Zeitschrift fur Zoologische Systematise und Evolutionsforschung, 31, 110118.
Lavie, B. & Nevo, E., 1981. Genetic diversity in marine molluscs: a test of the niche-width variation hypothesis. Marine Ecology, 2, 335342.
Lavie, B. & Nevo, E., 1986. Genetic diversity of marine gastropods: contrasting strategies of Cerithium rupestre and C. scabridum. Marine Ecology, 28, 99103.
Levins, R., 1970. Extinction. In Some mathematical problems in biology (ed. M., Gerstenhaler), pp. 77107. Providence, Rhode Island.
Louis, E.J. & Dempster, E.R., 1987. An exact test for Hardy-Weinberg and multiple alleles. Biometrics, 43, 805811.
Naylor, E., 1972. British marine isopods. Keys and notes for the identification of the species. Synopses of the British Fauna, New Series, Linnean Society. London, no. 3.
Naylor, E. & Haahtela, I., 1966. Habitat preferences and interspersion of species within the superspecies Jaera albifrons Leach (Crustacea: Isopoda). Journal of Animal Ecology, 35, 209216.
Nei, M., 1973. Analysis of gene diversity in subdivided populations. Proceedings of the National Academy of Sciences of the United States of America, 70, 33213323.
Nei, M., 1978. Estimation of average heterozygosity and genetic distance from a small number of individuals. Genetics, 89, 583590.
Nei, M. & Chesser, R.K., 1983. Estimation of fixation indices and gene diversity. Annals of Human Genetics, 47, 253259.
Nevo, E., 1978. Genetic variation in natural populations: patterns and theory. Theoretical Population Biology, 13, 121177.
Nevo, E., Beiles, A. & Ben-Schlomo, R., 1984. The evolutionary significance of genetic diversity: ecological, demographic and life-history correlates. Lecture Notes on Biomathematics, 53, 13213.
Newell, R.C., 1970. Biology of intertidal animals. London: Paul Elek.
Noy, R., Lavie, B. & Nevo, E., 1987. The niche-width variation hypothesis revisited: genetic diversity in the marine gastropods Littorina punctata (Gmelin) and L. neritoides (L.). Journal of Experimental Marine Biology and Ecology, 109, 109116.
Pavlicek, T. & Nevo, E., 1995. Genetic diversity and width of the food niche of phytophagous insects. Biologia, 50, 143149.
Piertney, S.B., 1994. Microgeographic genetic differentiation in the intertidal isopod Jaera albifrons. PhD thesis, University of Wales.
Piertney, S.B. & Carvalho, G.R., 1994. Microgeographic genetic differentiation in the intertidal isopod Jaera albifrons Leach. I. Spatial distribution of allozyme variation Proceedings of the Royal Society B, 256, 195201.
Piertney, S.B. & Carvalho, G.R., 1995a. Microgeographic genetic differentiation in the intertidal isopod Jaera albifrons Leach. II. Temporal variation in allele frequency. Journal of Experimental Marine Biology and Ecology, 188, 277288.
Piertney, S.B. & Carvalho, G.R., 1995b. Detection of high levels of genetic relatedness in rock-populations of an intertidal isopod using DNA fingerprinting. Journal of the Marine Biological Association of the United Kingdom, 75, 967976.
Piertney, S.B. & Carvalho, G.R., 1996. Sex ratio variation in the intertidal isopod, Jaera albifrons. Journal of the Marine Biological Association of the United Kingdom, 76, 825828.
Raymond, M. & Rousset, F., 1995a. GENEPOP (ver. 1–2), a population genetics software for exact tests and ecumenicism. Journal of Heredity, 86, 248249.
Raymond, M. & Rousset, F., 1995b. An exact test for population differentiation. Evolution, 49, 12801283.
Rice, W.R., 1989. Analyzing tables of statistical tests. Evolution, 43, 223225.
Schopf, T.J.M. & Gooch, J.L., 1971. Gene frequencies in a marine ectoproct: a cline in natural populations related to sea temperature. Evolution, 25, 402414.
Siegismund, H.R. & Christensen, B., 1992. A sex linked enzyme polymorphism in the marine isopod Jaera ischiosetosa. Journal of Heredity, 83, 388393.
Sjöberg, B., 1967. On the ecology of the Jaera albifrons group (Isopoda). Sarsia, 29, 321348.
Sokal, R.R. & Rohlf, F.J., 1981. Biometry. The principles and practice of statistics in biological research, 2nd ed. New York: W.H. Freeman.
Solignac, M., 1978. Genetics and ethological isolating mechanisms in the species complex Jaera albifrons (Crustacea: Isopoda). In Marine organisms: genetics, ecology, and evolution. Proceedings of a NATO Avanced Study Research Insititute on the genetics, evolution, and ecology of marine organisms, Venice, 24 March - 4 April 1977 (ed. B., Battaglia and J.A., Beardmore), pp. 637665. New York: Plenum Press. [NATO Conference Series: IV. Marine Sciences, v. 2.]
Somero, G.N. & Soule, M., 1974. Genetic variation in marine fishes as a test of the nichevariation hypothesis. Nature, London, 249, 670672.
Swofford, D.L. & Selander, R.B., 1981. BIOSYS-1: a FORTRAN program for the comprehensive analysis of electrophoretic data in population genetics and systematics. Journal of Heredity, 72, 281283.
Van Valen, L., 1965. Morphological variation and width of the ecological niche. American Naturalist, 99, 377390.
Ward, R.D., 1989. Molecular population genetics of marine organisms. In Reproduction, genetics and distribution of marine organisms. 23rd European Marine Biology Symposium, University of Wales, Swansea, 5–9 September 1988 (ed. J.S., Ryland and P.A., Tyler), pp. 265271. Fredensborg: Olsen & Olsen.
Wright, S., 1965. The interpretation of population structure by F-statistics with special regard to systems of mating. Evolution, 19, 395420.
Wright, S., 1978. Evolution and genetics. Vol. 4. Variability within and among natural populations Chicago: University of Chicago Press.

Interspecific Comparisons of Genetic Population Structure in Members of the Jaera Albifrons Species Complex

  • Gary R. Carvalho (a1) and Stuart B. Piertney (a1)

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