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Genetic variability in selected Polish population of Dreissena polymorpha [Pallas] [Bivalvia; Dreissenidae]

100%

Zielinski R., Soroka M., Wachowiak-Zielinska M.

Journal of Applied Genetics

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1996

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tom 37

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nr 1

Genetic variability of a selected population of Dreissena polymorpha, an invasive species playing a significant role in aquatic ecosystems, was studied. Starch gel electrophoresis was used to analyse 8 enzymatic loci in 200 individuals collected from 20 sites in a lake. The population was found to have 75.0% of polymorphic loci, 2.8 alleles per locus, 3.5 alleles per polymorphic locus, 0.393 coefficient of expected heterozygosity, and 149 genotypes. Zebra mussel clumps were strongly polymorphic; almost every individual had a different genotype. The high polymorphism observed in the D. polymorpha clumps had most likely resulted from external cross-fertilisation and the presence of free-swimming veliger larvae as well as from a considerable heterozygosity of individual bivalves. Genetic variability of the population studied was found to be similar to that of populations inhabiting other Western Pomeranian lakes, including both highly polluted ones and those formed as recently as about 40 years ago. This provides evidence for a mass colonisation of freshwater reservoirs effected by very polymorphic parent populations of D. polymorpha. The literature data on North American zebra mussel populations which invaded that continent about 10 years ago show them to be polymorphic, too, but not as much as European ones.

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Genetic structure of Dreissena polymorpha [Pallas] population in Lake Insko, North-Western Poland

84%

Soroka M., Zielinski R., Polok K., Swierczynski M.

Polskie Archiwum Hydrobiologii

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1997

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tom 44

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nr 4

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A genetic investigation of enzyme polymorphisms shared by wolf and dog: suggestions for conservation of the wolf in Italy

84%

Lorenzini R., Fico R.

Acta Theriologica. Supplement

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1995

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nr 03

In order to provide suggestions for conservation and management of the wolf Canis lupus Linnaeus, 1758 in Italy, a total of 46 wolves from central Italy and 53 mongrel dogs were surveyed for electrophoretic variation within and among populations. Six out of 41 presumptive gene loci exhibited polymorphism in the wolf (P = proportion of polymorphic loci = 0.146, 99 per cent criterion), whilst only 3 loci were variable in the dog (P = 0.073). Expected average heterozygosity in the Italian wolf (mean He= 0.037) was comparable to values reported previously for protein variation in natural wolf populations. By contrast, the dog showed a comparatively low heterozygosity (mean He = 0.020), which may be a consequence of domestication. Nei's (1978) absolute genetic distance between wolf and dog (D = 0.012) was very similar to values reported in previous investigations, thus confirming that they are closely related forms. Relative genetic differentiation (Wright's Fst = 0.167) between wolf and dog was considerably higher than the mean genetic diversity found among several dog breeds. The Jesuits of the present genetic investigation on the wolf population from central Italy suggested that its genetic resources are quite intact. The extent of differences in allelic frequencies at loci polymorphic both in wolf and dog did not suggest substantial wolf-dog interbreeding, which has been thought to be one of the major threats to the genetic integrity of the Italian wolf population.

4

The variability of the two peroxidase loci [a dimeric and a monomeric one] surveyed in rhizomes of common reed [Phragmites australis]

84%

Drapikowska M., Baczkiewicz A., Krzakowa M.

Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

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2005

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tom 72

5

Isoenzyme variation in the genetic resources of Vicia faba L.

67%

Przybylska J., Zimniak-Przybylska Z., Krajewski P.

Genetica Polonica

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1992

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tom 33

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nr 1

Ograniczanie wyników

1 Acta Theriologica. Supplement

1 Genetica Polonica

1 Journal of Applied Genetics

1 Polskie Archiwum Hydrobiologii

1 Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

2 Soroka M.

2 Zielinski R.

1 Baczkiewicz A.

1 Drapikowska M.

1 Fico R.

1 Krajewski P.

1 Krzakowa M.

1 Lorenzini R.

1 Polok K.

1 Przybylska J.

1 Swierczynski M.

1 Wachowiak-Zielinska M.

1 Zimniak-Przybylska Z.

1 2005

1 1997

1 1996

1 1995

1 1992

Genetic variability in selected Polish population of Dreissena polymorpha [Pallas] [Bivalvia; Dreissenidae]

Genetic structure of Dreissena polymorpha [Pallas] population in Lake Insko, North-Western Poland

A genetic investigation of enzyme polymorphisms shared by wolf and dog: suggestions for conservation of the wolf in Italy

The variability of the two peroxidase loci [a dimeric and a monomeric one] surveyed in rhizomes of common reed [Phragmites australis]

Isoenzyme variation in the genetic resources of Vicia faba L.