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Title: Karyotype of a Ranid Frog, Platymantis pelewensis, from Belau, Micronesia, with Comments on Its Systematic Implications 
Author: Ota, Hidetoshi; Matsui, Masafumi
Date: 1995-07
Publisher: University of Hawaii Press
Citation: Ota H, Matsui M. 1995. Karyotype of a ranid frog, Platymantis pelewensis, from Belau, Micronesia, with comments on its systematic implications. Pac Sci 49(3): 296-300.
Abstract: The karyotype of Platymantis pelewensis Peters, 1867, the only
native, endemic amphibian in Belau, extremely isolated from other congeners,
consisted of 2n = 22 homologous chromosomes largely forming a graded series.
Of these, chromosomes of pairs 1, 5, 6, 8, 10, and 11 were metacentric; the remainder
were submetacentric. Secondary constrictions were evident on shorter
arms of pair 7. This karyotype is nearly identical with that of P. papuensis
Meyer from New Guinea, but is distinct from two Philippine congeners hitherto
karyotyped both in chromosome number and morphology. This suggests that
the ancestral form of P. pelewensis dispersed from New Guinea or other Melanesian
ISSN: 0030-8870

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