Chemosensory Orientation to Conspecifics and Rainbow Trout in Adult Lake Whitefish Coregonus Clupeaformis (Mitchill)
Functions subserved by chemosensory orientation (scanning the area for chemical cues) have been known for many years (Stoddart, 1980; Kleerekoper, 1982). Pheromones (chemical cues for communication within a species) have been implicated in a number of fish behaviours, including schooling, aggression, sexual attraction, individual recognition, recognition of offspring and parents, homing, recognition of predators, and alarming conspecifics (Pfeiffer, 1977, 1982). Both behavioural (Höglund and Åstrand, 1973; Newcombe and Hartman, 1973; Groot et al., 1986; Quinn and Tolson, 1986; Stabell, 1987) and physiological (Döving et al., 1974; Hara and McDonald, 1976; Olsén, 1989) experiments have demonstrated the existence of species- or population-specific chemical signals in salmonids. Reactions to pollutants have also been reported in salmonids (Bertmar, 1979, 1982; Brown et al., 1982). However, experiments have usually been performed on young and subadult fishes, and no chemical orientation between salmonid species (allomones) has been described.
KeywordsRainbow Trout Test Fish Salmonid Species Salvelinus Alpinus Lake Whitefish
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