The ecology of coral reefs : results of a Workshop on Coral Reef Ecology held by the American Society of Zoologists, Philadelphia, Pennsylvania, December 1983 ecologyofcoralre00reak Year: 1985 Figure Hypoplectrus guttavarius (the shy hamlet) approximately 11 cm in length. the Buck Island Channel outside Teague Bay Reef on the northeast coast of St. Croix. Observations were made from February 20 to March 3, 1980. Further site descriptions are given by Neudecker and Lobel , 1982. METHODS Specific pairs of H. guttavarius were identified and details of their spawning behavior were re
The ecology of coral reefs : results of a Workshop on Coral Reef Ecology held by the American Society of Zoologists, Philadelphia, Pennsylvania, December 1983 ecologyofcoralre00reak Year: 1985 Figure Hypoplectrus guttavarius (the shy hamlet) approximately 11 cm in length. the Buck Island Channel outside Teague Bay Reef on the northeast coast of St. Croix. Observations were made from February 20 to March 3, 1980. Further site descriptions are given by Neudecker and Lobel , 1982. METHODS Specific pairs of H. guttavarius were identified and details of their spawning behavior were recorded before, during, and after the manipulation. Observers selected one pair each evening and positioned themselves unobtrusively on site at least 15 min before the fish initiated courtship. The baseline spawning behavior of each pair was determined during one or two evenings prior to the disturbance manipulation (3 of 7 pairs were observed for 2 consecutive days before the manipulations; the other 4 pairs were observed the day before the manipulations). In cases where sites lacked distinguishing natural features, the specific site at which each pair spawned was marked with small floats. We spent several days diving at all hours, including sunrise, and saw hamlets spawn only during dusk (total observation man- hours during the 7 days in HYDROLAB). Data recorded each time a pair spawned included the time, height in the water relative to the bottom and the coral/gorgonian structure over which spawning took place, approximate distance moved between spawning sites, and general notes on the pair's response to observers and other species. 73
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