Pertinent Stimuli for Habitat Selection by the Juvenile Manini, Acanthurus Triostegus Sandvicensis
1969
Sale, Peter F.
Distribution of juvenile manini in tide—pools and on reef flats was significantly correlated with water depth and with cover availability. Substratum type, degree of water movement, and presence of conspecifics were also of potential value as stimuli for habitat selection, but water temperature, salinity, and oxygen content were eliminated as possible cues. Laboratory experiments were conducted testing the responses of juvenile manini to light intensity and direction, to substratum texture and color, to the presence of conspecifics, to variations in degree of water movement, and to presence of food algae. Habitat selection by manini was primarily a response towards a substratum containing suitable food and cover, in a depth of water appropriate to the size of the individual fish. Degree of water movement and presence of conspecifics had a minor influence on the selection process.
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