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NOTES AND NEWS HANDEDNESS IN FIDDLER CRABS AS AN AID IN TAXONOMIC GROUPING OF THE GENUS UCA (DECAPODA, OCYPODIDAE) BY D. S. JONES and R. W. GEORGE Western Australian Museum, Francis St., Perth, 6000 Australia Crane (1975: 451) made the general statement for male Uca that "large claws occur about equally often on right and left" but reports of predominantly righthanded populations of Uca males have been published with ratios of 96: 4 (and higher) for right to left handedness (Takeda & Yamaguchi, 1973; Frith & Frith, 1977; Williams & Heng, 1981). In our revision of the 17 Australian Uca species (George & Jones, in press), we noted that males of U. dampieri Crane, U. vomeris McNeill and U. tetragonon (Herbst) are righthanded. These three species and those recorded by the above workers all belong to Crane's (1975) subgeneric grouping of Thalassuca (table I). The other 14 species of Australian Uca (including three new species) have about equal numbers of right and left handed males (table II) like those men- tioned by Crane. If other carcinologists could note male handedness for the species available to them, their data could be used to confirm our suspicion TABLE I Uca species
Crustaceana – Brill
Published: Jan 1, 1982
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