Allozymes characterize sibling species of bipolar Priapulida (Priapulus, Priapulopsis)

descriptionPublicationkeyboard_double_arrow_right Article 01 Aug 1996 English Publisher:Springer Science and Business Media LLCJournal:Polar Biology, volume 16, pages 521-526 (issn: 0722-4060, eissn: 1432-2056,

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Authors: A. Schreiber; Michael Eisinger; Volker Storch;

doi: 10.1007/bf02329072 , 10.1007/s003000050084

Allozymes characterize sibling species of bipolar Priapulida (Priapulus, Priapulopsis)

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Abstract

Electrophoretic polymorphism of glucosephosphate isomerase (Gpi*) and phosphoglucomutase (Pgm*) polymorphisms were assayed in the bipolardisjunct species pairsPriapulus caudatus/P. tuberculatospinosus andPriapulopsis bicaudatus/Priapulopsis australis (phylum Priapulida). Numbers of genotypes fromGpi* alleles and 14Pgm* alleles generally did not show deviations from Hardy-Weinberg expectations in composite populations sampled over geographic distances up to 500 km linearly measured. This genetic pattern suggests efficient population cohesion in a phylum where pelagic larvae have not been observed. Sibling species in generaPriapulus orPriapulopsis from northern and southern polar seas did not share identical allozyme alleles.

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