Predation vulnerability of planktonic copepods:consequences of predator foraging strategies and prey sensory abilities

• DOI: 10.3354/meps175129
• Publication Date: 2007-09-05T08:52:34Z
• Authors: M Viitasalo; T Kiørboe; J Flinkman; LW Pedersen; AW Visser
• Keywords: 0106 biological sciences; 14. Life underwater; 01 natural sciences

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 175:129-142 (1998) - doi:10.3354/meps175129 Predation vulnerability of planktonic copepods: consequences predator foraging strategies and prey sensory abilities Markku Viitasalo1,*, Thomas Kiørboe2, Juha Flinkman1,3, Lars W. Pedersen2, André Visser2 1Tvärminne Zoological Station Department Systematics, Division Hydrobiology, PO Box 17, FIN-00014 University Helsinki, Finland 2Danish Institute for Fisheries Research, Kavalérgården 6, DK-2920 Charlottenlund, Denmark 3Finnish 33, FIN-00931 *Address correspondence: Finland. E-mail: [e-mail] ABSTRACT: We investigated 2 copepod species (Eurytemora affinis Temora longicornis) predation by predators with different modes, three-spined stickleback Gasterosteus aculeatus juveniles mysid shrimps Neomysis integer. Copepods were videofilmed escaping from an artificial flow field, results used in a model hydrodynamic disturbance generated predator. The copepods detected mysids significantly larger distance than they sticklebacks (0.45 0.24 cm, respectively). Consequently, capture success was higher that mysids. In case on E. affinis, reaction correlated approaching speed; captured only if able slowly approach within strike <0.1 cm prey. Also, there major difference between vulnerabilities species: 92% T. longicornis 53% affinis. This corresponded experiments flow, where threshold fluid velocity gradient eliciting escape response 4 times (8.2 2.1 s-1, accurately predicted positive relationship speed distance, as well species. suggests that, using simple experiments, we can rank various zooplankton according their capabilities, thus predict small fish motility patterns. contrast, did not conform observations Apparently, created is related its swimming speed, but some other factor, such beat rate appendages. KEY WORDS: · Escape Hydrodynamic signals Prey selection Eurytemora integer Full text pdf format PreviousNextExport citation Tweet linkedIn Cited Published Vol. 175. Publication date: December 1998 Print ISSN:0171-8630; Online ISSN:1616-1599 Copyright © Inter-Research.