title: Feeding efficiency of planktivores under disturbance, the effect of water colour, predation threat and shoal composition.
abstract: The consumption of phantom midge Chaoborus flavicans larvae by Perca fluviatilis showed clear response to water colour, predation threat and shoal composition with the most significant negative effect for water colour. In the case of Rutilus rutilus, no similar combined response was observed and the total prey consumption was significantly negatively affected by predation threat of Esox lucius. The results suggest that differences in life-history traits may result in disparity in species-specific responses to disturbance.
authors.affiliation: Department of Environmental Sciences/Aquatic Sciences, University of Helsinki, P. O. Box 65, Helsinki 00014, Finland.
authors.forename: L
authors.initials: L
authors.lastname: Nurminen
authors.forename: S
authors.initials: S
authors.lastname: Estlander
authors.forename: M
authors.initials: M
authors.lastname: Olin
authors.forename: H
authors.initials: H
authors.lastname: Lehtonen
mesh_terms: D000818:Animals; D002519:Ceratopogonidae; D003116:Color; D003530:Cyprinidae / Q000502:physiology; D004777:Environment; D017859:Esocidae; D020387:Food Chain; D010471:Perches / Q000502:physiology; D011235:Predatory Behavior; D013045:Species Specificity; D014867:Water
chemical_list: D014867:Water
keywords: interspecific competition; intraspecific competition; optical properties; trait-related response