Morphology and ecology of Pacific sturgeons
Identifieur interne : 000178 ( PascalFrancis/Checkpoint ); précédent : 000177; suivant : 000179Morphology and ecology of Pacific sturgeons
Auteurs : Evgenii N. Artyukhin [Russie] ; Paul Vecsei [États-Unis] ; Douglas L. Peterson [États-Unis]Source :
- Environmental biology of fishes [ 0378-1909 ] ; 2007.
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Abstract
The six North Pacific members of the genus Acipenser have generally similar environmental requirements and share several specific morphological features. This Pacific group consists of green sturgeon, Acipenser medirostris, Sakhalin sturgeon, A. mikadoi, white sturgeon, A. transmontanus, Chinese sturgeon, A. sinensis, Dabry's sturgeon, A. dabryanus and Amur sturgeon, A. schrenkii. 'A qualitative morphological examination of these species revealed synapomorphic characters that suggest close phyolgenetic relationships resulting from common ancestry of eastern and western species within the Pacific Rim. An evolutionary taxonomic approach, considering a reduction of characters from east to west, would suggest an Asian ancestry for all Pacific sturgeons. In contrast however, a phylogenetic approach using derived character states suggests a North American ancestry. Besides a common ancestry for Chinese and American sturgeons, the taxonomic status of A. mikadoi is discussed.
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Artyukhin</name></noRegion></country><country name="États-Unis"><region name="Géorgie (États-Unis)"><name sortKey="Vecsei, Paul" sort="Vecsei, Paul" uniqKey="Vecsei P" first="Paul" last="Vecsei">Paul Vecsei</name></region><name sortKey="Peterson, Douglas L" sort="Peterson, Douglas L" uniqKey="Peterson D" first="Douglas L." last="Peterson">Douglas L. Peterson</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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