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Title

Diel vertical distribution of fish larvae during the winter-mixing period in the Northwestern Mediterranean

AuthorsSabatés, Ana
KeywordsFish larvae
Northwestern Mediterranean
Vertical distribution
Issue Date2004
PublisherElsevier
CitationICES Journal of Marine Science 61(8): 1243-1252 (2004)
AbstractThe vertical distributions of the larvae of shelf and oceanic fish species that spawn during the winter-mixing period in the Mediterranean are described from 22 vertically stratified plankton tows. Diel differences in the vertical distribution patterns in relation to physical data and potential prey abundance throughout the water column were examined. Even in absence of stratification, the larvae of the various fish species showed different patterns of vertical distribution and diel changes. The larvae of shelf-dwelling species were found in the surface layers, mainly above 50-m depth, and with some exceptions, with very little diel variation in depth distribution. Therefore, the vertical distribution of the larvae of these species coincided with the maximum concentrations of their potential food, nauplii and copepodite stages of copepods. The larvae of mesopelagic fishes showed deeper distributions in the water column and most of these species were located closer to the surface during the day than at night. Given the homogeneity of the physical characteristics throughout the water column, except for light, this behaviour may be determined not only by the higher concentration of prey in the surface layers but also by adequate light levels for feeding
Description10 pages, 7 figures
Publisher version (URL)http://dx.doi.org/10.1016/j.icesjms.2004.07.022
URIhttp://hdl.handle.net/10261/29170
DOI10.1016/j.icesjms.2004.07.022
ISSN1054-3139
E-ISSN1095-9289
Appears in Collections:(ICM) Artículos
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