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Sexual dimorphism and intersexuality in Upogebia stellata (Crustacea: Decapoda: Thalassinidea)

Published online by Cambridge University Press:  10 December 2001

Eunice H. Pinn ,
R. James A. Atkinson  and
Andrew Rogerson
Eunice H. Pinn
Affiliation:
School of Conservation Sciences, University of Bournemouth, Fern Barrow, Poole, Dorset, BH12 5BB, UK
R. James A. Atkinson
Affiliation:
University Marine Biological Station, Millport, Isle of Cumbrae, Scotland, KA28 0EG, UK
Andrew Rogerson
Affiliation:
Nova Southeastern University, Oceanographic Center, 8000 Ocean Drive, Dania, Florida 33004, USA
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Abstract

Evidence of sexual dimorphism in the mud-shrimp Upogebia stellata was observed in the abdomen length, total length, and also in the chelae. For the same carapace length, males had a shorter abdomen and, therefore, total length, whilst their chelae were larger and more robust than the females. Of the 91 U. stellata individuals examined, a single specimen was found to be of an intersex type, i.e. it exhibited both male and female external characteristics. Sexual dimorphism and intersexuality are discussed.

Type
Short Communication
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 81 , Issue 6 , December 2001 , pp. 1061 - 1062
Copyright
© 2001 Marine Biological Association of the United Kingdom

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