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Low energy expenditure and resting behaviour of humpback whale mother-calf pairs highlights conservation importance of sheltered breeding areas.
Bejder, L; Videsen, S; Hermannsen, L; Simon, M; Hanf, D; Madsen, P T.
Afiliación
  • Bejder L; Cetacean Research Unit, School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA, Australia. lbejder@hawaii.edu.
  • Videsen S; Marine Mammal Research Program, Hawaii Institute of Marine Biology, University of Hawaii at Manoa, Kaneohe, Hawaii, United States. lbejder@hawaii.edu.
  • Hermannsen L; Centre for Sustainable Aquatic Ecosystems, Harry Butler Institute, Murdoch University, Murdoch, WA, Australia. lbejder@hawaii.edu.
  • Simon M; Zoophysiology, Department of Bioscience, Faculty of Science and Technology, Aarhus University, Aarhus, Denmark.
  • Hanf D; Zoophysiology, Department of Bioscience, Faculty of Science and Technology, Aarhus University, Aarhus, Denmark.
  • Madsen PT; Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk, Greenland.
Sci Rep ; 9(1): 771, 2019 01 25.
Article en En | MEDLINE | ID: mdl-30683890
Understanding the behaviour of humpback whale mother-calf pairs and the acoustic environment on their breeding grounds is fundamental to assessing the biological and ecological requirements needed to ensure a successful migration and survival of calves. Therefore, on a breeding/resting ground, Exmouth Gulf, Western Australia, we used animal-borne DTAGs to quantify the fine-scale behaviour and energetic expenditure of humpback whale mothers and calves, while sound recorders measured the acoustic environment. We show that: (i) lactating humpback whales keep their energy expenditure low by devoting a significant amount of time to rest, and their use of energy, inferred from respiration rates, is ~half than that of adults on their foraging grounds; (ii) lactating females mainly rest while stationary at shallow depths within reach of the hull of commercial ships, thus increasing the potential for ship strike collisions; (iii) the soundscape is dominated by biological sources; and (iv) even moderate increases of noise from vessels will decrease the communication range of humpback whales. Planned commercial infrastructure in Exmouth Gulf will cause a substantial increase in shipping traffic with the risk of ship strikes and acoustic disturbance potentially compromising energy reserves for the southern migration of humpback whales.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Conservación de los Recursos Naturales / Migración Animal / Yubarta / Animales Salvajes / Ruido Tipo de estudio: Health_economic_evaluation Límite: Animals País/Región como asunto: Oceania Idioma: En Revista: Sci Rep Año: 2019 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Conservación de los Recursos Naturales / Migración Animal / Yubarta / Animales Salvajes / Ruido Tipo de estudio: Health_economic_evaluation Límite: Animals País/Región como asunto: Oceania Idioma: En Revista: Sci Rep Año: 2019 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Reino Unido