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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.)

Infestation rates of the pedunculated barnacle Octolasmis lowei (Cirripedia: Poecilasmatidae) on the spider crab Libinia spinosa (Decapoda: Majoidea)

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Cordeiro, C. A. M. M. [1] ; Costa, T. M. [2]
Total Authors: 2
[1] Univ Fed Paraiba, CCEN, DSE, UFPB, BR-58051900 Joao Pessoa, Paraiba - Brazil
[2] UNESP, Sao Vicente - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of the Marine Biological Association of the United Kingdom; v. 90, n. 2, p. 315-322, MAR 2010.
Web of Science Citations: 7

The prevalence and infestation intensities of Octolasmis lowei in the bronchial chambers of Libinia spinosa were evaluated according to the host's sex, size, and moult condition. Epibionts were classified as cyprid larvae, non-ovigerous or ovigerous according to their developmental stage. A median intensity of infestation of 21 epibionts/host was found (range = 1-644; Q(3) = 81). Epibiont prevalence values (88%) were higher on ovigerous female hosts than on males (55%) or on non-ovigerous females (31%). Intensity of infestation was positively correlated with host size in both sexes for non-ovigerous and ovigerous epibionts. No preference between host sex by cyprid larvae was observed, nor any correlation between cyprid abundance and host size. Cyprid larvae abundance was positively correlated with settled epibionts on both host sexes. The duration of the intermoult phase was the main factor linked to the establishment of sessile epibionts. These observations are important in relation to crabs that have a terminal moult, because these animals cannot eliminate their epibionts in future moults, thus increasing the importance of density-dependent mechanisms on epibiont establishment; in that way, prevalence of infestation alone can underestimate the real impact of infestation on the host's life cycle. (AU)

FAPESP's process: 05/01617-5 - Symbiont population structure of Octolasmis lowei Darwin, 1852 (Cirripedia: Poecilasmatidae) in Libinia spinosa H. Milne Edwards, 1834 (Decapoda: Majoidea)
Grantee:Cesar Augusto Marcelino Mendes Cordeiro
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 98/07090-3 - Benthic marine biodiversity in the state of São Paulo
Grantee:Antonia Cecília Zacagnini Amaral
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 01/00886-1 - Epibiosis em brachyuran crabs (Crustacea, Decapoda) of the non-consolidated sublittoral of the State of São Paulo
Grantee:Tânia Marcia Costa
Support type: Scholarships in Brazil - Post-Doctorate