Diet and feeding strategy of Northeast Atlantic mackerel (Scombrus scomber) in Icelandic waters

Overview
TitleDiet and feeding strategy of Northeast Atlantic mackerel (Scombrus scomber) in Icelandic waters
AuthorsKvaavik C, Óskarsson GJ, Daníelsdóttir AK, Marteinsdóttir G
TypeJournal Article
Journal NamePloS one
Volume14
Issue12
Year2019
Page(s)e0225552
CitationKvaavik C, Óskarsson GJ, Daníelsdóttir AK, Marteinsdóttir G. Diet and feeding strategy of Northeast Atlantic mackerel (Scombrus scomber) in Icelandic waters. PloS one. 2019; 14(12):e0225552.

Abstract

Predator-prey relations, as well as the trophic ecology of highly migratory marine species, is important to understand their impact on the ecosystem. Conventional methods were used to study the diet composition and feeding strategy of the Northeast Atlantic mackerel (Scombrus scomber), during their summer feeding migration to Icelandic waters in 2009-2014. In addition, generalised additive modelling (GAM) was used to determine which biological and environmental factors contribute to the variation of their stomach weight in the years 2011-2014. From the dietary analysis, we found that calanoid copepods (especially Calanus finmarchicus) were the most important contributor to the overall diet of mackerel in the years studied. Although in some years and areas, they also preyed heavily on larger prey items such as euphausiids, amphipods and megalopa larvae of crab and shrimp. The GAM showed that temperature and the time the day of sampling were significant explanatory variables for the stomach weight, while zooplankton biomass did not seem to have much influence. The Northeast Atlantic mackerel are ferocious feeders upon copepods, as well as exhibiting an overall opportunistic feeding strategy. During their feeding migration in Icelandic waters, they were found to feed on the most dominant species available to them.

Properties
Additional details for this publication include:
Property NameValue
Journal CountryUnited States
Publication TypeJournal Article
Language Abbreng
LanguageEnglish
Elocation10.1371/journal.pone.0225552
DOI10.1371/journal.pone.0225552
Journal AbbreviationPLoS ONE
Publication Date2019
eISSN1932-6203
ISSN1932-6203
Publication ModelElectronic-eCollection
Cross References
This publication is also available in the following databases:
DatabaseAccession
PMID: PMID:31887738