Sur L'Appendix Masculina Chez Salmoneus (Decapoda, Alpheidae)

Sur L'Appendix Masculina Chez Salmoneus (Decapoda, Alpheidae) SUR L'APPENDIX MASCULINA CHEZ SALMONEUS (DECAPODA, ALPHEIDAE) PAR ALBERTO CARVACHO División de Oceanologia, CICESE, Apartado 2732, Ensenada, B.C., México ABSTRACT A revision of all specimens of the six species of Salmoneus extant in the Museum of Natural History of Paris has shown that there is always an appendix masculina on the second pleopod. The presence of such a character, even in ovigerous specimens, suggests the possibility of it being a characteristic of genus Salmoneus. This case is compared to that of Automate, where males lack the appendix masculina. INTRODUCTION Chez les crevettes carides il existe normalement deux sexes g6n6tiquement diff6renci6s et qui s'expriment - du point de vue morphologique - 4 partir d'un age relativemcnt precoce. La presence de caracteres sexuels secondaircs permet quelquefois de reconnaitre aiscment les sexes, au moins a 1'etat adulte: c'est le cas du developpement d6mesur6 du deuxieme p6r6iopode chez les males de Macrobrachium ou des diff6rences dans la forme du rostrc chez Leander tenuicornis (Say). En outre, a de rares exceptions pres, la differenciation sexuelle s'exprime par la presence, sur le deuxieme pl6opode du male, d'un appendice qui se situe entre 1'endopodite et 1'appendix interna. Cet appendice male est d'une taille variable par http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crustaceana Brill

Sur L'Appendix Masculina Chez Salmoneus (Decapoda, Alpheidae)

Crustaceana , Volume 57 (3): 253 – Jan 1, 1989

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Publisher
BRILL
Copyright
© 1989 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0011-216x
eISSN
1568-5403
D.O.I.
10.1163/156854089X00590
Publisher site
See Article on Publisher Site

Abstract

SUR L'APPENDIX MASCULINA CHEZ SALMONEUS (DECAPODA, ALPHEIDAE) PAR ALBERTO CARVACHO División de Oceanologia, CICESE, Apartado 2732, Ensenada, B.C., México ABSTRACT A revision of all specimens of the six species of Salmoneus extant in the Museum of Natural History of Paris has shown that there is always an appendix masculina on the second pleopod. The presence of such a character, even in ovigerous specimens, suggests the possibility of it being a characteristic of genus Salmoneus. This case is compared to that of Automate, where males lack the appendix masculina. INTRODUCTION Chez les crevettes carides il existe normalement deux sexes g6n6tiquement diff6renci6s et qui s'expriment - du point de vue morphologique - 4 partir d'un age relativemcnt precoce. La presence de caracteres sexuels secondaircs permet quelquefois de reconnaitre aiscment les sexes, au moins a 1'etat adulte: c'est le cas du developpement d6mesur6 du deuxieme p6r6iopode chez les males de Macrobrachium ou des diff6rences dans la forme du rostrc chez Leander tenuicornis (Say). En outre, a de rares exceptions pres, la differenciation sexuelle s'exprime par la presence, sur le deuxieme pl6opode du male, d'un appendice qui se situe entre 1'endopodite et 1'appendix interna. Cet appendice male est d'une taille variable par

Journal

CrustaceanaBrill

Published: Jan 1, 1989

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