3.9 Article

ALLOMETRY OF THE BOX CRAB CALAPPA CONVEXA DE SAUSSURE, 1853 (BRACHYURA, CALAPPIDAE) IN THE SOUTHEASTERN GULF OF CALIFORNIA

期刊

CRUSTACEANA
卷 94, 期 11-12, 页码 1407-1427

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BRILL
DOI: 10.1163/15685403-bja10165

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  1. National Council of Science and Technology (CONACYT) in Mexico [CVU: 768717]

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The relative growth of Calappa convexa was analyzed to identify dimorphism or morphological changes related to sexual maturation. Significant differences between sexes were found in carapace width and total wet weight. No clear winner model was observed under a multi-model approach, with differences in allometry based on morphometric relationships and gender.
The relative growth of Calappa convexa can be used to identify dimorphism or morphological change related to sexual maturation. The carapace width (CW) against width and length of the propodus of the right and left cheliped were tested to obtain a coefficient of allometry. CW against total wet weight WT values were analysed for length-weight relationships (LWR). Relative growth was analysed by a multi-model approach. Five models were tested and the best was selected due to the greater weight of the Akaike criterion (W-i) Significant differences between sexes were found in CW = 3.33, p<0.001) and WT (U = 14012. p<0.05). The negative or positive allometry varied according to the morphometric relationship and sex. No real winner model (W-i > 90%) was observed in the LWR analysis under a multi-model approach. The average model estimated a breakpoint at 118 mm CW in males and 132 mm CW in females.

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