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 Mesochaetopterus sagittarius: an example of a biogeography discrepancy between larval and adult boundaries: implication for recruitment studies
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/6589

title: Mesochaetopterus sagittarius: an example of a biogeography discrepancy between larval and adult boundaries: implication for recruitment studies
authors: Bhaud, MR
Ravara, AA
Marcano, G
Moreira, MH
keywords: SLOPE
BAY
CURRENTS
BISCAY
issue date: Aug-2002
publisher: Cambridge University Press
abstract: A geographic discrepancy between the distribution boundaries for larvae and adults of the chactopterid Mesochaetopterus sagittarius was recorded. The most northerly position where benthic individuals, probably not reproductive, have been collected in the Atlantic corresponds to the latitude of Aveiro (Portugal). The most northerly position for larvae corresponds to that of Arcachon (France). The larvae found off Arcachon constitute an influx of subtropical origin. They rarely succeed in passing the fixation stage, and when they do, the benthic stage is not capable of reproduction. The occupation of a very large zone by planktonic larvae spread over 4degrees of latitude (500 km), eventually resulting in sterile benthic populations, confirms that environmental constraints are less severe on larvae than on adults. This work emphasizes,, through the integration of different oceanographic disciplines, the importance of knowing the structure of the spatial distribution of adults when seeking to achieve a better understanding of local recruitment.
URI: http://hdl.handle.net/10773/6589
ISSN: 0025-3154
publisher version/DOI: http://dx.doi.org/10.1017/S002531540200588X
source: Journal of the Marine Biological Association of the UK
appears in collectionsBIO - Artigos
PT Mar - Artigos

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