To quantify the distribution, feeding habits, reproductive behaviour, growth, migration and population strucutre of herbivorous fishes in temperate reefs where seaweed cover has declined
Type of Study:
Animal tracking, surveys, experiments, morphological traits
Tropical/ warm-temperate herbivorous fishes overwinter in temperate reefs. The activity of rabbitfish and kyphosids markedly declines with water temperature = suggestion that recent rises in winter water temperature has extended the period of high grazing activity of herbivorous fishes. Gut content and feeding preference experiments show Kyphosus bigibbus preferentially feeds on canopy brown algae.
5 algal species offered in feeding preference assyas
Kyushu and Okinawa, southern Japan
Response variable :
Movement range of tagged fish, algal consumption, morphological traits (dot patterns and body depth)
Variable/ not described. 93 animals tagged in acoustic study
Yamaguchi A. (2010) Biological aspects of herbivorous fishes in the coastal areas of western Japan. Bull Fish. Res. Agen. 32, 89-94.