Post-larval development and sexual dimorphism of the spider crab Maja brachydactyla (Brachyura: Majidae)
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Publication date
2009-12-01ISSN
0214-8358
Abstract
the post-larval development of the majid crab Maja brachydactyla Balss, 1922 was studied using laboratoryreared larvae obtained from adult individuals collected in the ne atlantic. the morphology of the first juvenile stage is described
in detail, while the most relevant morphological changes and sexual differentiation are highlighted for subsequent juvenile
stages, until juvenile 8. the characteristic carapace spines of the adult phase are present in the first juvenile stage, though with
great differences in the degree of development and relative size. the carapace shows a high length/weight ratio, which becomes
similar to that of adults at stage 7-8. males and females can be distinguished from juvenile stage 4, based on sexual dimorphism
in the pleopods and the presence of gonopores. in addition, the allometric growth of the pleon is sex-dependent from juvenile
stage 4, with females showing a positive allometry (b=1.23) and males an isometric allometry (b=1.02).
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
637 - Produce of domestic (farmyard) animals and game
Pages
12
Publisher
Consejo Superior de Investigaciones Científicas
Is part of
Scientia Marina
Citation
Guerao, Guillermo, and Guiomar Rotllant. 2009. “Post-larval Development and Sexual Dimorphism of the Spider Crab Maja Brachydactyla (Brachyura: Majidae).” Scientia Marina 73 (4): 797–808. doi: 10.3989/scimar.2009.73n4797
Grant agreement number
MAPAMA/JACUMAR/ /ES/Propuestas y mejoras para el diseño y control de los planes de repoblación y evaluación del impacto de los escapes/REPES
Program
Aqüicultura
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2811]
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/