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COMPOSITION, MOVIMENTATION AND SHELL EXCHANGE IN HERMIT CRABS (ANOMURA, CRUSTACEA)CLUSTERS AT ARAÇÁ BAY, SÃO SEBASTIÃO (SP)

Grant number: 12/19552-0
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2012
Effective date (End): October 31, 2013
Field of knowledge:Biological Sciences - Zoology - Animal Behavior
Principal researcher:Fosca Pedini Pereira Leite
Grantee:Pedro Augusto da Silva Peres
Home Institution: Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

Hermit crabs have an assymetrical and no-sclerotized abdomen which stays sheltered by gastropod shells. The shells protects hermit crabs against predation and dissecation , but influence aspects of their biology, such as fecundity and growth. Due to this influence, hermit crabs periodically seek and exchange their shells when they find a better quality shell (without epibionts , no damaged shells, etc). One way to acquire new shell and exchange the old one is standing in clustering formation with other hermit crabs. Clusters are considered places where hermit crabs find protection against dissecation and predators, where males find females and where "shell exchange markets" are formed. The aim of this project is to study clustering formation, composition and hermit crabs behaviour in this situation at Araçá Bay, north coast of São Paulo state, Brazil. The project will be developed in four stages. The initial part will be identifying the shells and hermit crabs species in clustering formation. Then, experiments will be realized to understand the clustering formation, first with field marking and recapturing animals and, then with clustering formation under controlled tidal in laboratory conditions. Finally, also in laboratory, artificial clusters will be analyzed to verify which are the characteristics of the first hermit crabs that exchange its shell when a new one is add to the system.

News published in Agência FAPESP Newsletter about the scholarship:
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VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PERES, PEDRO A. S.; FERREIRA, ANA PAULA; LEITE, FOSCA P. P. Expanding the ``shell exchange market{''} hypothesis for clustering behavior in intertidal hermit crabs: Mating and tide as proximate factors. Journal of Experimental Marine Biology and Ecology, v. 500, p. 100-104, MAR 2018. Web of Science Citations: 1.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.