Community Research and Development Information Service - CORDIS

FP5

ETHOFISH Report Summary

Project ID: QLRS-2002-00799
Funded under: FP5-LIFE QUALITY
Country: United Kingdom

Effect of turbidity on activity and habitat selection in juvenile plaice

Until the end of the first year of life, juvenile plaice (Pleuronectes platessa) occupy shallow water sandy habitats, which are often turbid. The behavioural responses of juvenile plaice to a controlled turbid environment were examined and although a clear pattern of cyclical activity with a tidal periodicity was evident, turbidity had no effect on activity levels or timing of increased activity.

Variable amounts of time were spent in both clear and turbid habitats but, given a choice, juvenile plaice were more likely to be found in turbid water. No effect of turbidity was identified on the depth of water occupied by the fish, although more pelagic swimming activity occurred during darkness in clear water, possibly as a means of predator avoidance. The presence of turbid waters in habitats occupied by juvenile plaice may be advantageous, as the reduced visibility decreases the likelihood of detection by visual predators.

Contact

Robert BATTY, (Research Scientist)
Tel.: +44-1631-559284
Fax: +44-1631-559001
E-mail
Record Number: 43147 / Last updated on: 2006-11-28
Information source: e-TIP
Collaboration sought: Further research or development support
Stage of development: Scientific and/or technical knowledge (basic research)