Zoological Studies>47卷1期
頁數:12 需求點數:48 電子全文:
系統識別號1080516
篇 名Taxonomy, Phylogeny, and Biogeography of the Endemic Mudflat Crab Helice/Chasmagnathus Complex (Crustacea: Brachyura: Varunidae) from East Asia
作 者Hsi-Te Shih;Hiroshi Suzuki
刊 名Zoological Studies
卷期/出版年月47卷1期 (2008/01)
頁次114-125
資料語文英文
摘要

Taxonomy, phylogeny and biogeography of the endemic mudflat crab Helice/Chasmagnathus complex (Crustacea: Brachyura: Varunidae) from East Asia. Zoological Studies 47(1): 114-125. The taxonomy, phylogeny, and biogeography of the endemic genera Helice, Helicana, and Chasmagnathus from East Asia were studied using 2 mitochondrial genes: the large subunit (16S) ribosomal (r)RNA and cytochrome oxidase subunit I (COI). Helice and Helicana were each shown to be monophyletic genera, while 3 species of the genus Helice, H. latimera, H. formosensis, and H. tientsinensis, formed an unresolved "H. latimera clade", implying that they may represent the same species with an intraspecific variable number of suborbital tubercles. Helice tridens is predominantly distributed Japan and might be adapted to a more-temperate (northern) climate with cooler temperatures. The 3 species of Helicana can very clearly be genetically distinguished from one another. The sympatric purple and olive forms of Chasmagnathus convexus appear to belong to the same species, and the color differences are probably caused by variable food sources or the substrate on which it lives.

關鍵詞Helicana,16S rRNA,Cytochrome oxidase I,Morphology,Distribution
CEPS分類學科別>醫學與生命科學>動物學


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