Influence of environmental variables on the distribution of intertidal porcellanid crabs in Sepetiba Bay, Rio de Janeiro, Brazil

Mattos, Luciana Antunes de; Mendes, Luziane M. D.; Bedê, Luciane M.; Costa, Tiago Viana da; Oshiro, Lídia Miyako Yoshii

doi:10.3856/vol42-issue5-fulltext-5

Cited by 2 publications

(1 citation statement)

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“…These environmental features influence growth, reproduction and incubation period of crustaceans by modulating the metabolism and hormones, triggering molts, and/or accelerating gonadal development (Wear 1974;Oba & Goshima 2004;Castilho et al 2007;Lardies & Castilla 2001). Several authors have reported that temperature and salinity are important factors that contribute to the development and distribution of marine decapods (Castilho et al , 2008Furlan et al 2013, Martins et al 2014, Mattos et al 2014. During experiments carried out in Venezuela, Guerra-Castro et al (2007) observed that adults of A. cribrarius often migrate towards offshore regions, probably searching for food availability, or other environmental resources.…”

Section: Discussionmentioning

confidence: 99%

Temporal and bathymetric distribution of juveniles and adults of the speckled swimming crab Arenaeus cribrarius from coastal waters of southern Brazil

et al. 2017

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This study evaluated the temporal and bathymetric distribution of the speckled swimming crab Arenaeus cribrarius from coastal waters of southern Brazil. Monthly samples were taken at five distinct depths throughout one year in the adjacent area from Babitonga Bay, Southern Brazil. Data on environmental conditions (temperature, salinity, granulometry and organic matter) were collected and their association was tested using Multiple Linear Regression and Principal Component Analysis. Juveniles and adults showed different distribution patterns according to depth, with juveniles being more abundant in the shallower areas. The increase in temperature favors the juvenile distribution, while the distribution of adults was related to finer sediments. The pattern of distribution observed for adults might be associated with burrowing habits, or with the search for colder (and consequently deeper) waters, which are richer in nutrients. The high abundance of juveniles in shallower areas might be influenced by the Coastal Water mass that provides higher water temperatures in the summer, and by the Babitonga Bay estuarine complex, which can be an important source of organic matter. We conclude that this region represents a nursery ground for the studied species and is essential to preserve Babitonga Bay in order to maintain A. cribrarius in this region, since this area has suffered from anthropic impacts.

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