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Post by warsaw on Dec 18, 2012 9:01:33 GMT -9
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Post by warsaw on Dec 18, 2012 9:07:02 GMT -9
Phantom Subspecies: The Wood Bison Bison bison “athabascae” Rhoads 1897 Is Not a Valid Taxon, but an Ecotype VALERIUS GEIST’ (Received 26 March 1990; accepted in revised form 25 April 1991) ABSTRACT. The proposal that the “hybrid bisoonf” W ood Buffalo National Park( WB N P ) be exterminated and replaced with “wood bisohna”s no taxonomic justification. The subspecies Bison bison arhubuscaeR hoads 1897 is based on inadequate descriptions and taxonomically invalidc riteria - i.e., body size and morphornetrics. Its accepted pelage features are based on studies of the same herd of Nyarling River (NR) bison from Elk Island National Park (EINP). These pelagef eatures, assumed to be geneticallyf ixed, are ecotypic confinement effects, which NR bison share with EINP bull elk and moose.I n bison the display haiarc ts analogous to deer antlers, which reflect their bearers’ access to highquality food during their growth. NR bison in captivity, in the Mackenzie Bison Sanctuary (MBS), and the original wood bison are “northern plains bison.” Nor are WBNP bison distinguishable from MBS bison. A “wood bison” phenotype was also described as diagnostic for southern plains bison (B. b. bison Lmaeus 1758); the northern plains bison was nameEd. b. montanue Krumbiegel 1980. Consequently, E . b. arhubuscae = B. b. bison, as the latter has priority. Yet captive and introduced NR athubuscue = montanue. Some WBNP bison resemble E. priscus, supporting the view that B. bison evolved as a hybrid between American and Siberian large-homed bison. Hybridization in large mammals need not bef o .................... arctic.synergiesprairies.ca/arctic/index.php/arctic/article/download/1552/1531 |
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