Sound Production, Schooling, and Feeding Habits of the Margate, Haemulon Album Cuvier, off North Bimini, Bahamas
Abstract:The behavior of a school of margates, Haemulon album Cuvier, was studied with hydrophones and an underwater television system. Margates entered the acoustic-video underwater observation area about sunrise. They schooled during the day and dispersed in late afternoon. Feeding and other activity increased considerably at night. Common food organisms included bivalve mollusks, crustaceans, and small fishes. Nighttime and daytime diets were of similar composition. The sounds of feeding and other activities were recorded on magnetic tapes. Underwater television observations were made of margates schooling, feeding, and being preyed upon by amberjacks and barracuda. Identifiable natural characters and Petersen disc tags were used to determine that after nocturnal foraging, most margates returned to school in the same place each morning. Large margates, however, were not observed to school.
Document Type: Research Article
Publication date: 1966-09-01
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