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Allozyme variation and genetic divergence in the sand goby, Pomatoschistus minutus (Teleostei: Gobiidae) Stefanni, S.; Gysels, E.S.; Volckaert, F.A.M.J.; Miller, P.J. (2003). Allozyme variation and genetic divergence in the sand goby, Pomatoschistus minutus (Teleostei: Gobiidae). J. Mar. Biol. Ass. U.K. 83(5): 1143-1149. dx.doi.org/10.1017/S0025315403008403h In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 58970 [ download pdf ]

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Trefwoorden

Analytical techniques > Electrophoresis Chemical compounds > Organic compounds > Carbohydrates > Saccharides > Polysaccharides > Cellulose Chemical compounds > Organic compounds > Carbohydrates > Saccharides > Polysaccharides > Starch Disciplines > Biology > Genetics > Population genetics > Gene flow Enzymes Enzymes > Allozymes Enzymes > Dehydrogenases Genetic diversity Genomes Gobiidae Cuvier, 1816 [WoRMS]; Pomatoschistus minutus (Pallas, 1770) [WoRMS]; Teleostei [WoRMS] A, North Atlantic [Marine Regions]; ANE, Noordzee [Marine Regions]; MED, Adriatic [Marine Regions]; MED, Western Mediterranean [Marine Regions] Marien/Kust

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Auteurs		Top
Stefanni, S., correspondent Gysels, E.S., meer Volckaert, F.A.M.J., meer Miller, P.J.

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Abstract

Samples of the widely distributed sand goby Pomatoschistus minutus have been investigated genetically from ten localities in the north-eastern Atlantic, North Sea, western Mediterranean and Adriatic Sea. Levels of genetic diversity and differentiation were assessed with starch (SGE) and cellulose acetate (CAGE) gel electrophoresis for 13 enzyme systems. Genetic differentiation between spatial samples points to a reduction or even absence of gene flow between the Adriatic and the other samples, including the western Mediterranean Sea (pair-wise FST=0·37 and 0·32 for SGE and CAGE respectively). The sample from the Adriatic Sea was clearly differentiated from the other samples at the lactate dehydrogenase loci LDH-A* (SGE and CAGE) and LDH-C* (CAGE). Values for genetic differentiation between Venetian and other sand gobies were of the same order of magnitude as between P. minutus and its closest relative P. lozanoi, suggesting allopatric speciation in the lagoon of Venice. At locations outside the Adriatic Sea, the sand goby has the typical features of a marine fish with a high level of gene flow and a low degree of genetic differentiation.

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