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ICES Journal of Marine Science: Journal du Conseil Advance Access published online on March 17, 2008
ICES Journal of Marine Science: Journal du Conseil, doi:10.1093/icesjms/fsn027
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© 2008 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Spatial distribution of chaetognaths off the northern Bicol Shelf, Philippines (Pacific coast)

Mary Mar P. Noblezada and Wilfredo L. Campos

OceanBio Laboratory, Division of Biological Sciences, College of Arts and Sciences, University of the Philippines in the Visayas, 5023 Miagao, Iloilo, Philippines

Correspondence to M. M. P. Noblezada: tel: +63 33 3159271; fax: +63 33 3159271; e-mail: zoea21st{at}yahoo.com

Noblezada, M. M. P., and Campos, W. L. 2008. Spatial distribution of chaetognaths off the northern Bicol Shelf, Philippines (Pacific coast). – ICES Journal of Marine Science, 65: 482–492.

The composition, abundance, and distribution of chaetognaths off the northern Bicol Shelf, Philippines (Pacific coast), from 31 stations along transects perpendicular to the coast were analysed. Samples were collected in April, 2001. In all, 26 species belonging to 14 genera were identified. Flaccisagitta enflata was the most abundant and frequently captured species at all stations, and constituted 41.9% of the total specimens. Most of the smallest diversity values were observed from areas affected by upwelling, although the greatest densities were observed at stations located within the upwelling zones. The occurrence of mesopelagic and bathypelagic species (Decipisagitta decipiens, Caecosagitta macrocephala, and Eukrohnia fowleri), in samples collected from upper water layers, could be explained by vertical transport caused by upwelling.

Keywords: bathypelagic, benthic, chaetognath, epipelagic, mesopelagic, northern Bicol Shelf, upwelling

Received 28 June 2007; accepted 13 January 2008.


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