Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/15462
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Vertical distribution of early developmental stages in two coexisting clupeoid species, Sardinella aurita and Engraulis encrasicolus

AuthorsSabatés, Ana CSIC ORCID ; Zaragoza, Nuria CSIC; Grau, Claudia CSIC ; Salat, Jordi CSIC ORCID
KeywordsSardinella aurita
Engraulis encrasicolus
Larvae
Eggs
Microzooplankton
Vertical distribution
NW Mediterranean
Issue Date29-Jul-2008
PublisherInter Research
CitationMarine Ecology Progress Series 364: 169-180 (2008)
AbstractIn recent years a northward expansion of Sardinella aurita has been reported in the western Mediterranean. Considering the coexistence of its larvae with those of the dominant species Engraulis encrasicolus, the present study was conducted to compare their vertical distributions in 2 areas off the Catalan coast with different vertical environmental conditions. During summer, the water column was stratified with a deep chlorophyll maximum (DCM) beneath the pycnocline. However, the southern area, under the influence of the Ebro River, was characterized by a secondary surface chlorophyll maximum. Vertical distribution of larval food, nauplii and copepodites showed good agreement with the high chlorophyll layers. In the earliest stages of development, larvae of both species remained in the upper levels. From 6 mm standard length on they developed a day/night migratory behaviour to search for food during the day (feeding period). Therefore, in the south, where the abundance of potential food in the upper layers was relatively high, larvae of both species remained in the upper levels during the day. However, in the north, where food was restricted to the DCM, only E. encrasicolus larvae were able to reach these deep levels. The low temperatures (~15°C) detected at the DCM may restrict the vertical migration of S. aurita in accordance with their thermophilic character. This limitation might represent a restriction for the northward expansion of this species in the western Mediterranean
Description12 pages, 8 figures, 4 tables
Publisher version (URL)https://doi.org/10.3354/meps07461
URIhttp://hdl.handle.net/10261/15462
DOI10.3354/meps07461
ISSN0171-8630
E-ISSN1616-1599
Appears in Collections:(ICM) Artículos

Files in This Item:
File Description SizeFormat
Sabates_et_al_2008.pdf465,91 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

SCOPUSTM   
Citations

42
checked on Jan 19, 2022

WEB OF SCIENCETM
Citations

43
checked on Jan 18, 2022

Page view(s)

310
checked on Jan 22, 2022

Download(s)

155
checked on Jan 22, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.