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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

CRYPSIS IN THE MUD CRAB PANOPEUS AMERICANUS SAUSSURE, 1857 (DECAPODA, PANOPEIDAE): RELATIONSHIP TO SEXUAL MATURITY

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Author(s):
Carvalho-Batista, Abner [1, 2] ; Pescinelli, Regis A. [1, 2] ; Garcia, Joyce R. [2] ; Guerra, Pedro G. M. [3] ; Pardo, Luis M. [4] ; Mantelatto, Fernando L. [5]
Total Authors: 6
Affiliation:
[1] Sao Paulo State Univ, Lab Biol & Ecol Marine & Freshwater Shrimp, BR-17033360 Bauru - Brazil
[2] Paulo State Univ, Ctr Studies Biol Ecol & Cultivat Crustaceans, BR-18618970 Botucatu, SP - Brazil
[3] Univ Sao Paulo, Ctr Marine Biol, BR-11600000 Sao Sebastiao - Brazil
[4] Univ Austral Chile, Inst Ciencias Marinas & Limnol, Lab Costero Calfuco, Valdivia - Chile
[5] Univ Sao Paulo, Fac Philosophy Sci & Letters Ribeirao Preto FFCLR, Dept Biol, Lab Bioecol & Crustacean Systemat LBSC, BR-14040901 Ribeirao Preto, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: CRUSTACEANA; v. 88, n. 9, p. 963-977, AUG 2015.
Web of Science Citations: 7
Abstract

The present study analyses the cryptic colouration patterns in mud crabs, Panopeus americanus that live in an impacted intertidal mangrove area. The main objectives were to identify the cryptic/non-cryptic transition sizes (males and females) and their relationships to morphological and functional sexual maturity. Individuals were collected from the remnant mangrove of Araca, on the coast of Sao Sebastiao, Sao Paulo, Brazil. They were sexed, measured and classified into three colouration categories: white homogeneous, cryptic heterogeneous or dark homogeneous (non-cryptic). A logistic regression was performed to detect the size at which 50% of the population reached the dark homogeneous colouration and functional sexual maturity in females. Morphological sexual maturity for both sexes was estimated through relative growth. A progressive change from heterogeneous to dark homogeneous colouration following growth was observed. Using both analyses of maturity, we detected (1) that individuals of the white homogeneous colouration can be classified as non-reproductive and (2) that there is an overlap between the size at which 50% of females reached the dark homogeneous colouration and their functional sexual maturity (approximately 14.00 mm CW). These findings are primarily explained by ontogenetic changes in habitat use during the species' life cycle. (AU)

FAPESP's process: 13/12136-4 - Population dynamics of the shrimp Alpheus brasileiro Anker, 2012 (Decapoda: Caridea: Alpheidae) in Cananéia,south of São Paulo State
Grantee:Régis Augusto Pescinelli
Support type: Scholarships in Brazil - Master
FAPESP's process: 13/14174-0 - Population biology of the shrimp Rimapenaeus constrictus (Stimpson, 1874)(Decapoda:Penaeoidea)in the Cananéia region, south coast of the State of São Paulo
Grantee:Joyce Rocha Garcia
Support type: Scholarships in Brazil - Master
FAPESP's process: 10/50188-8 - Decapod crustaceans: multi-disciplinary characterization of the sea biodiversity of the State of São Paulo (taxonomy, spermiotaxonomy, molecular biology and population dynamics)
Grantee:Fernando Luis Medina Mantelatto
Support type: BIOTA-FAPESP Program - Thematic Grants