Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/3288
Título: Daytime dive characteristics from six short-finned pilot whales Globicephala macrorhynchus off Madeira Island
Autor: Alves, Filipe M. A.
Dinis, Ana
Ribeiro, Cláudia
Nicolau, Cátia
Kaufmann, Manfred
Fortuna, Caterina M.
Freitas, Luís
Palavras-chave: Biologgers
Dive Profile
Marine Mammal
NE Atlantic
TDRs
Data: 2013
Editora: Universidade dos Açores
Citação: "ARQUIPÉLAGO. Life and Marine Sciences". ISSN 0873-4704. Nº 31 (2014): 1-8.
Relatório da Série N.º: Ciências Biológicas e Marinhas = Life and Marine Sciences;31
Resumo: Six time-depth recorders attached with suction-cups were deployed in resident and transient adult short-finned pilot whales to evaluate their daytime diving characteristics in their preferred habitat area off Madeira Island. Here, data on the proportion of time spent at the surface and at different dive phases (descent, bottom and ascent), dive depths and dive rates are presented. With mean attachment durations of 2 h 31 min (SD=2 h), the whales spent a considerable amount of time at the surface (mean=76.3%, SD=18.6) and presented a low diving rate (mean=6.8 dives h‾¹, SD=6.1; considering dive as submergence deeper than 10 m). The maximum dive depth recorded in this study was 988 m, and dives deeper than 500 m, which were recorded from resident and transient whales, suggest foraging activity along their preferred habitat area. The analysis of dives deeper than 100 m shows that the percentage of time spent on descent, bottom or ascent varied between dives, with means of ~40, 30 and 30%, respectively.
Peer review: yes
URI: http://hdl.handle.net/10400.3/3288
ISSN: 0873-4704
Aparece nas colecções:ARQ - LMS - Número 31

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