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Decapod larval retention within distributional bands in a coastal upwelling ecosystem

2014; Inter-Research; Volume: 507; Linguagem: Inglês

10.3354/meps10817

1616-1599

Cátia Bartilotti, Antonina Dos Santos, Margarida Castro, Álvaro Peliz, A. Miguel P. Santos,

Coral and Marine Ecosystems Studies

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 507:233-247 (2014) - DOI: https://doi.org/10.3354/meps10817 Decapod larval retention within distributional bands in a coastal upwelling ecosystem Cátia Bartilotti1,*, Antonina dos Santos1, Margarida Castro2, Álvaro Peliz3, A. Miguel P. Santos1,2 1Instituto Português do Mar e da Atmosfera (IPMA), Av. Brasília s/n, 1449-006 Lisboa, Portugal 2Centro de Ciências do Mar do Algarve, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal 3Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa. Campo Grande, 1749-016 Lisboa, Portugal *Corresponding author: catia_bartilotti@hotmail.com ABSTRACT: The spatial distribution and ontogenetic vertical migrations of decapod larvae in the northwestern Portuguese upwelling ecosystem were analyzed to explore the hypothesis of retention over the shelf and the related mechanisms involved. The sampled decapod crustacean larvae were retained on the continental shelf along 3 meridional bands parallel to the coast, independent of larval phase duration or taxonomic group. All larval stages belonging to inner shelf or estuarine species were found close to the shore, mainly restricted to a 10 km wide band. The larvae of shelf species were mainly distributed in the middle of the shelf. However, some of these species were widely distributed over the shelf, whereas others were more abundant in the northern or southern transects (as a consequence of the advection of a warmer water mass from the south). The outer shelf band included larvae from slope species. This distribution pattern (i.e. in bands) corroborates observations from other coastal upwelling systems and results from the relationship between larval behavior and local oceanographic processes. Ontogenetic vertical migration behavior was evident for almost all the taxa analyzed, in which the older stages (last zoeal stages, decapodids and megalopae) were usually found in deeper strata of the water column. KEY WORDS: Decapod larvae · Retention · Ontogenetic vertical migrations · Distributional bands · Upwelling · Portugal Full text in pdf format PreviousNextCite this article as: Bartilotti C, dos Santos A, Castro M, Peliz Á, Santos AMP (2014) Decapod larval retention within distributional bands in a coastal upwelling ecosystem. Mar Ecol Prog Ser 507:233-247. https://doi.org/10.3354/meps10817 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 507. Online publication date: July 17, 2014 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2014 Inter-Research.