Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/1439
Título: The use of artificial benthic collectors for assessment of spatial patterns of settlement of megalopae of Carcinus maenas (L.) (Brachyura: Portunidae) in the lower Mira Estuary, Portugal
Autor: Paula, José R.
Silva, Inês C.
Francisco, Sara Martins
Flores, Augusto A. V.
Palavras-chave: Megalopae
Settlement
Artificial collectors
Spatial patterns
Carcinus maenas
Mira estuary
Data: 2006
Editora: Springer
Citação: Hydrobiologia, 557, 69-77
Resumo: Artificial benthic collectors have been widely used for the assessment of settlement rates of decapod crustaceans. However, to date no consistent works have addressed spatial patterns of settlement in different estuarine habitats, and no specific studies targeted the interaction of artificial surfaces with the surrounding natural substrate. It may be expected that the artificial surface may produce a different thigmotactic response when compared to the natural substrate, which may limit the use of this technique for assessment of natural settlement rates. In this study the settlement rates of megalopae of the estuarine crab Carcinus maenas were addressed, specifically deploying artificial benthic collectors in different habitats both intertidal and subtidal in the lower Mira estuary. A number of experiments were performed concerning stratification and temporal fluctuations of settlement. Further, the interaction of collector surface with the surrounding substrate was investigated, by comparing settlement rates in natural and artificial substrates in different habitats. Results have shown significant differences in settlement between different estuarine habitats, both in spatially replicated experiments and in a high-resolution temporal experiment. However, comparison between settlement rates in artificial and natural substrates has shown that there is a strong interference between collectors and surrounding substrate, limiting interpretation of results concerning settlement rates in artificial substrate alone.
Peer review: yes
URI: http://hdl.handle.net/10400.12/1439
ISSN: 0272-7714
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

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