Macrozooplankton predation impact on anchovy (Engraulis encrasicolus) eggs mortality at the Bay of Biscay shelf break spawning centre

Aitor Albaina, Xabier Irigoien, Unai Aldalur, Guillermo Boyra, María Santos, Andone Estonba

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A real-time PCR based method involving a species-specific probe was applied to detect Engraulis encrasicolus eggs predation by the macrozooplankton community during the 2011 spawning season. Three locations along the shelf break presenting contrasting but high prey densities were sampled. A total of 840 individuals from 38 taxa of potential macrozooplankton predators were assayed for E. encrasicolus DNA presence and 27 presented at least one positive signal. Carnivorous copepods were responsible for the most predation events (66%) followed by euphausiids (16%), chaetognaths (5%), and myctophid fish (4%). Macrozooplankton predation on anchovy eggs followed a type-I functional response with daily mortalities
Original languageEnglish (US)
Pages (from-to)1370-1379
Number of pages10
JournalICES Journal of Marine Science
Volume72
Issue number5
DOIs
StatePublished - Nov 23 2014

ASJC Scopus subject areas

  • Ecology
  • Ecology, Evolution, Behavior and Systematics
  • Oceanography
  • Aquatic Science

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