Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/1245
Título: Does access to the bluestreak cleaner wrasse Labroides dimidiatus affect indicators of stress and health in resident reef fishes in the Red Sea?
Autor: Ros, Albert F. H.
Lusa, Jeanne
Meyer, Meghann
Soares, Marta C.
Oliveira, Rui Filipe
Brossard, Michel
Bshary, Redouan
Palavras-chave: Coral reef fish
Cleaning symbiosis
Mutualism
Cortisol
Immunocompetence
KLH-DNP
Leukocytes
Body condition
Trade-off
Data: 2011
Editora: Elsevier
Citação: Hormones and Behavior, 59, 151-158
Resumo: Interactions between the bluestreak cleaner wrasse Labroides dimidiatus and its client reef fish are a textbook example of interspecific mutualism. The fact that clients actively visit cleaners and invite inspection, together with evidence that cleaners eat many client ectoparasites per day, indeed strongly suggests a mutualistic relationship. What remains unknown is how parasite removal affects the physiology of clients and thereby their body condition, health, and immune function. Here we addressed these issues in a field study in Ras Mohammed National Park, Egypt. In our study area, small reef patches are inter-spaced with areas of sandy substrate, thereby preventing many species (i.e., residents, including cleaner wrasses) from travelling between the reef patches. This habitat structure leads to a mosaic of resident clients with and without access to bluestreak cleaner wrasses, further referred to as “cleaner access”, on which we focused our study. We found that residents with cleaner access had higher body condition than residents without cleaner access. However, indicators of stress like variation in cortisol levels corrected for handling time and various immune parameters were apparently unaffected by cleaner access. In fact antibody responses were significantly higher in fishes without cleaner access. This suggests that cleaner access decreases the need for active immunity and that this releases resources that might be allocated to other functions such as somatic growth and reproduction.
Peer review: yes
URI: http://hdl.handle.net/10400.12/1245
ISSN: 0018-506X
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

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