Intraguild predation between small pelagic fish in the Bay of Biscay: impact on anchovy (Engraulis encrasicolus L.) egg mortality

Handle URI:
http://hdl.handle.net/10754/566123
Title:
Intraguild predation between small pelagic fish in the Bay of Biscay: impact on anchovy (Engraulis encrasicolus L.) egg mortality
Authors:
Bachiller, Eneko; Cotano, Unai; Ibaibarriaga, Leire; Santos, Maria; Irigoien, Xabier ( 0000-0002-5411-6741 )
Abstract:
Small pelagic fish can play an important role in various ecosystems linking lower and upper trophic levels. Among the factor behind the observed inter-annual variations in small pelagic fish abundance, intra- and inter-specific trophic interactions could have a strong impact on the recruitment variability (e.g. anchovy). Egg cannibalism observed in anchovies has been postulated to be a mechanism that determines the upper limit of the population density and self-regulates the population abundance of the species. On the other hand, predation by other guild species is commonly considered as a regulation mechanism between competing species. This study provides empirical evidence of anchovy cannibalism and predation of the main small pelagic fish species on anchovy eggs and estimates the effect of intraguild predation on the anchovy egg mortality rate. Results show that, depending on the year (2008–2009), up to 33 % of the total anchovy egg mortality was the result of sardine predation and up to 4 % was the result of egg cannibalism together with predation by Atlantic and Atlantic Chub mackerel and sprat. Results also indicate that in the Bay of Biscay, fluctuations in the survival index of the early life stages of anchovy are likely to be attributable at least in part to egg cannibalism and especially to a high sardine predation on anchovy eggs. © 2015 Springer-Verlag Berlin Heidelberg
KAUST Department:
Red Sea Research Center (RSRC)
Publisher:
Springer Science + Business Media
Journal:
Marine Biology
Issue Date:
12-May-2015
DOI:
10.1007/s00227-015-2674-0
Type:
Article
ISSN:
00253162
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorBachiller, Enekoen
dc.contributor.authorCotano, Unaien
dc.contributor.authorIbaibarriaga, Leireen
dc.contributor.authorSantos, Mariaen
dc.contributor.authorIrigoien, Xabieren
dc.date.accessioned2015-08-12T09:29:13Zen
dc.date.available2015-08-12T09:29:13Zen
dc.date.issued2015-05-12en
dc.identifier.issn00253162en
dc.identifier.doi10.1007/s00227-015-2674-0en
dc.identifier.urihttp://hdl.handle.net/10754/566123en
dc.description.abstractSmall pelagic fish can play an important role in various ecosystems linking lower and upper trophic levels. Among the factor behind the observed inter-annual variations in small pelagic fish abundance, intra- and inter-specific trophic interactions could have a strong impact on the recruitment variability (e.g. anchovy). Egg cannibalism observed in anchovies has been postulated to be a mechanism that determines the upper limit of the population density and self-regulates the population abundance of the species. On the other hand, predation by other guild species is commonly considered as a regulation mechanism between competing species. This study provides empirical evidence of anchovy cannibalism and predation of the main small pelagic fish species on anchovy eggs and estimates the effect of intraguild predation on the anchovy egg mortality rate. Results show that, depending on the year (2008–2009), up to 33 % of the total anchovy egg mortality was the result of sardine predation and up to 4 % was the result of egg cannibalism together with predation by Atlantic and Atlantic Chub mackerel and sprat. Results also indicate that in the Bay of Biscay, fluctuations in the survival index of the early life stages of anchovy are likely to be attributable at least in part to egg cannibalism and especially to a high sardine predation on anchovy eggs. © 2015 Springer-Verlag Berlin Heidelbergen
dc.publisherSpringer Science + Business Mediaen
dc.titleIntraguild predation between small pelagic fish in the Bay of Biscay: impact on anchovy (Engraulis encrasicolus L.) egg mortalityen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalMarine Biologyen
dc.contributor.institutionMarine Research Division, AZTI Foundation, Herrera Kaia Portualdea z/gPasaia, Gipuzkoa (Basque Country), Spainen
dc.contributor.institutionPelagic Fish Research Group, Institute of Marine Research (IMR), Nordnes 33, PO box 1870Bergen, Norwayen
kaust.authorIrigoien, Xabieren
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