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|標題:||SYSTEMATICS OF THE INDO-WEST PACIFIC BROAD-FRONTED FIDDLER CRABS(CRUSTACEA: OCYPODIDAE: GENUS UCA)||關鍵字:||Uca;Austruca;Cranuca;Paraleptuca;fi ddler crab;16S rRNA;cytochrome oxidase I;28S rRNA;systematics||Project:||THE RAFFLES BULLETIN OF ZOOLOGY, Volume 61, Issue 2, Page(s) 641-649.||摘要:||
Fiddler crabs (genus Uca) with broad-fronts (BF) belong to a group of small-sized species withcomplex behaviors and have been suggested to be more “advanced” compared to the narrow-fronted speciesgroups. Three Indo-West Pacifi c subgenera, Austruca Bott, 1973, Cranuca Beinlich & von Hagen, 2006, andPa raleptuca Bott, 1973, are reappraised using two mitochondrial (16S rRNA and cytochrome oxidase I) andone nuclear (28S rRNA) markers. The phylogenetic analyses show that the three clades agree relatively wellwith the three subgenera as currently defi ned. Our study confi rms that the Indo-West Pacifi c BF species thathad been placed with the American Celuca sensu Crane, 1975, are genetically unsupported, and should beclassifi ed in Austruca, together with U. sindensis (Alcock, 1900) (currently in Paraleptuca). Austruca nowcontains 11 species. Cranuca, a subgenus established with only U. inversa (Hoffmann, 1874), is supportedby its monophyly and its signifi cant distance from other subgenera. In addition, Paraleptuca (= AmphiucaCrane, 1975) is restricted for U. chlorophthalmus (H. Milne Edwards, 1837), U. crassipes (White, 1847)and U. splendida (Stimpson, 1858). The two American BF subgenera, Minuca Bott, 1954 and Leptuca Bott,1973, form a mixed clade and further studies will be needed to clarify their validities.
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