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Title: Heterochely and laterality in Kingsleya castrensis Pedraza, Martinelli-Filho & Magalhães, 2015 (Decapoda, Pseudothelphusidae)
Authors: Martinelli Filho, José Eduardo
dos Santos, Thuareag Monteiro Trindade
Petracco, Marcelo
Lima-Gomes, Renata C. de
Magalhães, Célio
Keywords: Allometry
Freshwater Ecosystem
Habitat Loss
Neotropical Region
New Record
New Species
Sexual Dimorphism
Xingu Basin
Decapoda (crustacea)
Issue Date: 2019
metadata.dc.publisher.journal: Crustaceana
metadata.dc.relation.ispartof: Volume 92, Número 4, Pags. 415-427
Abstract: Crabs of the family Pseudothelphusidae are restricted to the Neotropical region and new species are described every year. They are threatened by habitat loss and knowledge of this family is almost limited to taxonomy and faunal surveys. Here, we investigate the presence of heterochely and laterality in Kingsleya castrensis, as a tool to infer ecological and behavioural aspects. Since most Pseudothelphusidae were described from a few individuals only, some aspects of morphological variation, sexual dimorphism, heterochely and laterality are confirmed herein for the first time for a species of Kingsleya. The sizes of dactylus and propodus of males, as well as the allometric growth of both sides of the chelipeds, were significantly larger and higher, respectively, when compared to females. The right side was significantly longer than the left and both sexes displayed right-handedness. These results are similar to those from other freshwater crab families, and provide a clue to a possible aggressive, display, and territorial behaviour in K. castrensis. © 2019 by Koninklijke Brill NV, Leiden, The Netherlands.
metadata.dc.identifier.doi: 10.1163/15685403-00003890
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