Crustacean Research
Online ISSN : 2189-5317
Print ISSN : 0287-3478
ISSN-L : 0287-3478
Handedness of Macromedaeus distinguendus and Leptodius exaratus (Brachyura: Xanthidae)
Takao Yamaguchi
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1994 Volume 23 Pages 74-78

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Abstract
A total of 12,129 specimens of Macromedaeus distinguendus were examined for handedness. The percentage of left-handed crabs was 21.5 % in males and 20.8 % in females. No significant increase in the ratio of left-handed crabs by size was confirmed. Examination of a total of 4,453 specimens of Leptodius exaratus showed that the species has an equal ratio with regard to handedness.
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© 1994 Carcinological Society of Japan
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