Brazilian Archives of Biology and Technology | |
Occupation pattern of a harbor inlet by the estuarine dolphin, Sotalia guianensis (P. J. Van Bénéden, 1864) (Cetacea, Delphinidae) | |
Marta Jussara Cremer2  Paulo César Simões-lopes1  José Salatiel Rodrigues Pires2  | |
[1] ,Universidade Federal de São Carlos Laboratório de Análise e Planejamento Ambiental Departamento de HidrobiologiaSão Carlos SP ,Brasil | |
关键词: Sotalia guianensis; occupation index; Babitonga bay; harbor use; behavior; | |
DOI : 10.1590/S1516-89132009000300029 | |
来源: SciELO | |
【 摘 要 】
The occupation pattern of Sotalia guianensis in São Francisco do Sul harbor inlet, in Babitonga bay, southern Brazil, was studied between September 1996 and June 1998. A total of 200 h of naturalistic observations and 141.2 h of estuarine dolphin systematic observations were made using binoculars 7 x 50. At each three minutes interval, data about number of individuals and behavior were registered. The population used the harbor inlet intensively, mainly for fishing activities. Ebb tide was responsible for a higher occupation index. Considering the months analyzed, the higher occupation index occurred in May, and in January the lower occurrence was observed. The mean group size was four individuals.
【 授权许可】
CC BY-NC
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RO202005130165995ZK.pdf | 223KB | download |