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BILATERAL GYNANDROMORPH OF THE FRESH-WATER CRAB POTAMON FLUVIATILE HERBST (DECAPODA: BRACHYURA)

BILATERAL GYNANDROMORPH OF THE FRESH-WATER CRAB POTAMON FLUVIATILE HERBST (DECAPODA: BRACHYURA) Though bilateral gynandromorphism among normally dioecious decapod crus- taceans has already been reported (Chace and Moore, 1959; Ito, 1965; Farmer, 1972; Otto, 1979; Cargo, 1980; Johnson and Otto, 1981; Manning and Holthuis, 1981; Taylor, 1986), few works describe the gonad his- tology (Farmer, 1972; Cargo, 1980; John- son and Otto, 1981). It is evident from the literature on this topic that various degrees of sexual differentiation have been encoun- tered on the two sides of such specimens, ranging from definite bilaterality in both the primary and secondary sexual characters (the lobster Homarus americanus, Chace and Moore, 1959; the fresh-water prawn Neph- rops norvegicus, Farmer, 1972), to either in- complete development (the blue crab Cal- linectes sapidus, Cargo, 1980) or partial masculinization of the gonad on the female side (Callinectes sapidus, Johnson and Otto, 1981). Such abnormal sexual differentiations are of interest for what they may contribute to understanding the mechanisms of sexual determination, well known in some crus- tacean groups such as Isopoda and Am- phipoda (Charniaux-Cotton and Payen, 1988), but still debated within Decapoda. In particular, while the role of the andro- genic gland (AG) in determining the differ- entiation of primary and secondary sexual characters has http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Crustacean Biology Brill

BILATERAL GYNANDROMORPH OF THE FRESH-WATER CRAB POTAMON FLUVIATILE HERBST (DECAPODA: BRACHYURA)

Micheli, Fiorenza
Journal of Crustacean Biology , Volume 11 (4): 561 – Jan 1, 1991
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Publisher
Brill
Copyright
Copyright 1991 by Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0278-0372
eISSN
1937-240X
DOI
10.1163/1937240X91X00428
Publisher site
See Article on Publisher Site

Abstract

Though bilateral gynandromorphism among normally dioecious decapod crus- taceans has already been reported (Chace and Moore, 1959; Ito, 1965; Farmer, 1972; Otto, 1979; Cargo, 1980; Johnson and Otto, 1981; Manning and Holthuis, 1981; Taylor, 1986), few works describe the gonad his- tology (Farmer, 1972; Cargo, 1980; John- son and Otto, 1981). It is evident from the literature on this topic that various degrees of sexual differentiation have been encoun- tered on the two sides of such specimens, ranging from definite bilaterality in both the primary and secondary sexual characters (the lobster Homarus americanus, Chace and Moore, 1959; the fresh-water prawn Neph- rops norvegicus, Farmer, 1972), to either in- complete development (the blue crab Cal- linectes sapidus, Cargo, 1980) or partial masculinization of the gonad on the female side (Callinectes sapidus, Johnson and Otto, 1981). Such abnormal sexual differentiations are of interest for what they may contribute to understanding the mechanisms of sexual determination, well known in some crus- tacean groups such as Isopoda and Am- phipoda (Charniaux-Cotton and Payen, 1988), but still debated within Decapoda. In particular, while the role of the andro- genic gland (AG) in determining the differ- entiation of primary and secondary sexual characters has

Journal

Journal of Crustacean Biology – Brill

Published: Jan 1, 1991

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