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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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one publication added to basket [23720]

Genetic characterization of Artemia tibetiana (Crustacea: Anostraca) Abatzopoulos, T.J.; Kappas, I.; Bossier, P.; Sorgeloos, P.; Beardmore, J.A. (2002). Genetic characterization of Artemia tibetiana (Crustacea: Anostraca). Biol. J. Linn. Soc. 75(3): 333-344. https://dx.doi.org/10.1111/j.1095-8312.2002.tb02074.x In: Biological Journal of the Linnean Society. Academic Press: London; New York. ISSN 0024-4066; e-ISSN 1095-8312, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 263000 [ download pdf ]

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Trefwoorden

Biological speciation Enzymes > Allozymes Evolution > Speciation Genetic diversity Isolating mechanisms > Sexual isolation Speciation Artemia Leach, 1819 [WoRMS] Marien/Kust

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Auteurs		Top
Abatzopoulos, T.J. Kappas, I. Bossier, P., meer	Sorgeloos, P., meer Beardmore, J.A.

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Abstract

The brine shrimp Artemia consists of a number of bisexual species and a large number of parthenogenetic forms, which collectively, inhabit a wide range of hypersaline habitats. A recently described species (A. tibetiana) from a carbonate lake (Lagkor Co) in Tibet at an altitude of 4490 m has been tested with New World (A. franciscana USA, and A. franciscana feral population Vietnam) and Old World species (A. salina, A. urmiana, A. sinica) for cross fertility. These tests show complete infertility between A. tibetiana and A. franciscana. Between A. tibetiana and A. urmiana, A. sinica partial fertility through to F-2 and F-3 generations is evident. Allozyme and RAPD comparison of A. tibetiana with A. franciscana (USA), A. franciscana (Vietnam), A. sinica (Mongolia) and A. urmiana (Iran) show that A. tibetiana is similar to other bisexual species in mean heterozygosity (0.074) but has a somewhat higher proportion of polymorphic loci (40%, similar to that of A. urmiana). The genetic distance between A. tibetiana and A. franciscana is 0.730, between A. tibetiana and A. urmiana is 0.475 and that between A. tibetiana and A. sinica is 0.114. F-is estimates for A. tibetiana differ significantly from zero for six loci, mainly because of lack of fit to Hardy-Weinberg expectations. This may suggest that even within the limited area of Lagkor Co there are genetically distinct populations.

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