Your browser doesn't support javascript.
loading
Solitary humpback whales manufacture bubble-nets as tools to increase prey intake.
Szabo, A; Bejder, L; Warick, H; van Aswegen, M; Friedlaender, A S; Goldbogen, J; Kendall-Bar, J M; Leunissen, E M; Angot, M; Gough, W T.
Afiliación
  • Szabo A; Alaska Whale Foundation, Petersburg, PO Box 1927, AK, USA.
  • Bejder L; Marine Mammal Research Program, Hawaii Institute of Marine Biology, University of Hawaii at Manoa, Kaneohe, HI 96744, USA.
  • Warick H; Department of Bioscience, Zoophysiology, Aarhus University, Aarhus 8000, Denmark.
  • van Aswegen M; Marine Mammal Research Program, Hawaii Institute of Marine Biology, University of Hawaii at Manoa, Kaneohe, HI 96744, USA.
  • Friedlaender AS; Marine Mammal Research Program, Hawaii Institute of Marine Biology, University of Hawaii at Manoa, Kaneohe, HI 96744, USA.
  • Goldbogen J; University of California, Santa Cruz, CA 94720, USA.
  • Kendall-Bar JM; Hopkins Marine Station, Stanford University, Pacific Grove, CA 94305, USA.
  • Leunissen EM; Scripps Institution of Oceanography, University of California, La Jolla, CA 92037, USA.
  • Angot M; Department of Marine Science, University of Otago, Dunedin 9054, New Zealand.
  • Gough WT; Alaska Whale Foundation, Petersburg, PO Box 1927, AK, USA.
R Soc Open Sci ; 11(8): 240328, 2024 Aug.
Article en En | MEDLINE | ID: mdl-39169963
ABSTRACT
Several animal species use tools for foraging; however, very few manufacture and/or modify those tools. Humpback whales, which manufacture bubble-net tools while foraging, are among these rare species. Using animal-borne tag and unoccupied aerial system technologies, we examine bubble-nets manufactured by solitary humpback whales (Megaptera novaeangliae) in Southeast Alaska while feeding on krill. We demonstrate that the nets consist of internally tangential rings and suggest that whales actively control the number of rings in a net, net size and depth and the horizontal spacing between neighbouring bubbles. We argue that whales regulate these net structural elements to increase per-lunge prey intake by, on average, sevenfold. We measured breath rate and swimming and lunge kinematics to show that the resulting increase in prey density does not increase energetic expenditure. Our results provide a novel insight into how bubble-net tools manufactured by solitary foraging humpback whales act to increase foraging efficiency.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: R Soc Open Sci Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: R Soc Open Sci Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido