title: Stress Response and Habituation to Motorboat Noise in Two Coastal Fish Species in the Bothnian Sea.
abstract: The effect of motorboat noise on stress responsiveness in Eurasian perch and roach was tested in field enclosure experiments. Perch showed elevated cortisol levels after one 30-min noise exposure but not when exposed to noise repeatedly for 11 days. Roach had higher cortisol levels when exposed to noise than without noise when short- and long-term experiments were pooled. Both species had more cortisol in enclosures with mixed species compared with single-species enclosures. Both species also had higher cortisol levels in the short-term compared with the long-term experiment. Thus, a stress effect of motorboat noise may decrease with time due to habituation.
authors.affiliation: Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden. kajsa.johansson@slu.se.
authors.forename: Kajsa
authors.initials: K
authors.lastname: Johansson
authors.affiliation: Swedish Defence Research Agency, SE-901 83, Stockholm, Sweden.
authors.forename: Peter
authors.initials: P
authors.lastname: Sigray
authors.affiliation: Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden. tobias.backstrom@slu.se.
authors.forename: Tobias
authors.initials: T
authors.lastname: Backström
authors.affiliation: Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden. carin.magnhagen@slu.se.
authors.forename: Carin
authors.initials: C
authors.lastname: Magnhagen
mesh_terms: D000161:Acoustic Stimulation; D000818:Animals; D004781:Environmental Exposure; D005399:Fishes / Q000502:physiology*; D006185:Habituation, Psychophysiologic; D009622:Noise; D009792:Oceans and Seas; D010471:Perches / Q000502:physiology; D012767:Ships; D013045:Species Specificity; D013312:Stress, Physiological; D013997:Time Factors
keywords: Cortisol; Eurasian perch; Roach; Sound disturbance