Related Experiment Video
Updated: May 10, 2026

Collecting Marine Gnathiid Isopod Fish Parasites with Light Traps
Published on: September 25, 2023
Habitat complexity affects how young of the year Atlantic cod Gadus morhua perceive predation threat from older
P Theodorou1, S S Snorrason, G Á Olafsdóttir
1Research Centre of the Westfjords, University of Iceland, Bolungarvík, Iceland.
Abstract:
The response of age 0+ year juvenile Atlantic cod Gadus morhua to the presence of age 1+ and age 3+ year conspecifics was measured with and without cover available. Juveniles reacted by aggregating more closely and maintaining distance from older conspecifics in an experimental setting without cover but only to age 3+ year conspecifics when cover was available. The results indicate that prior residence of older juveniles can affect age 0+ year juveniles during benthic settlement and highlights the conservation value of structurally complex nursery habitats.
Related Concept Videos
Population Growth
Optimal Foraging
Predator-Prey Interactions
Fixed Action Patterns
Microbial Interactions: Predation
Habitat Fragmentation
