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|a eng
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|a Apte, S
|e verfasserin
|4 aut
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|a Absence of population genetic differentiation in the New Zealand greenshell mussel Perna canaliculus (Gmelin 1791) as assessed by allozyme variation
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|c 2001
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|a Text
|b txt
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|a ohne Hilfsmittel zu benutzen
|b n
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|b nc
|2 rdacarrier
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|a Date Revised 28.09.2020
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Genetic variation in the endemic New Zealand greenshell mussel, Perna canaliculus (Gmelin 1791), was examined using starch-gel electrophoresis at seven protein-coding loci (Idh; Acon-1; Acon-2; Gpd; Pgi; Pgm; Pgd) in 35 populations (N=1038 mussels). For all loci and all populations, Fisher's exact tests indicated highly significant departures from Hardy-Weinberg equilibrium (HWE), but this overall result was caused by significant heterozygote deficiencies at only two loci (Pgm and Pgd), and in only three northern populations (Kuaotunu, Te Haumi and Days Bay). Allelic and genotypic differentiation between population pairs at individual loci and across all loci were nonsignificant, and genotypic disequilibrium at each locus pair was also nonsignificant for all populations. Genetic variation in all populations was high (mean heterozygosity, 0.210+/-0.113), while Nei's D among populations was very low (0.002+/-0.002). Low population subdivision (θ=-0.001+/-0.002) and high levels of gene flow (Nm(p)=10.18; Nm(θ)=infinity) also indicated that the single panmictic unit model best explains population genetic homogeneity in P. canaliculus over a north-south distance >2000 km. Lack of genetic subdivision in this species is discussed in light of two previous allozyme studies, with differing results: one suggested that a north-south division exists between greenshell mussel stocks, and the other suggested that population structure in this species can be explained through isolation by distance model modified by local hydrology
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|a Journal Article
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|a Gardner, J P.A.
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of experimental marine biology and ecology
|d 1998
|g 258(2001), 2 vom: 15. Apr., Seite 173-194
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|g volume:258
|g year:2001
|g number:2
|g day:15
|g month:04
|g pages:173-194
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|d 258
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|h 173-194
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