Inicio Inicio

CCAMLR

Comisión para la Conservación de los Recursos Vivos Marinos Antárticos

  • Inicio
  • Contenido
  • Inicio de sesión

Formulario de búsqueda

  • Acerca de la CCRVMA
  • Medidas de conservación
  • Ciencia
  • Pesquerías
  • Ejecución
  • Datos
  • Reuniones
  • Publicaciones
  • English
  • Français
  • Русский
  • Español
  • Inicio
  • Reuniones
  • WG-EMM-97/28
Print this page
Increase font size
Decrease font size

Important aspects of prey distribution for the formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island

Doc Number: WG-EMM-97/28
Autor(es): Bengtson, J.L., Hiruki, L.M., Naganobu, M., Ichii, T., Meyer, W.R., Cameron, M.F., Boveng, P., Takao, T., Miura, A., Jansen, J.K., Kawaguchi, S., Hayashi, T.
Submitted By: ()

Please complete a document request form to access this document

Inicio de sesión

  • Solicitar una nueva contraseña
Abstract: 

Variables of prey availability between inshore and slope/offshore foraging areas were compared to evaluate important factors for the formation of foraging areas of Chinstrap penguins (Pygoscelis antarctica) and Antarctic fur seals (Arctocephalus gazella) at Seal Island. Advantages of foraging inshore are: 1) proximity to breeding colonies and 2) high krill (Euphausia superba) abundance, whereas those of foraging slope/offshore are: 3) less patchy krill distribution, 4) shallow krill distribution, 5) larger krill size and 6) occurrence of energy-rich bioluminescing myctophid fish at night. Chinstrap penguins foraged in two modes during chick-brooding period: daytime foraging chinstrap penguins foraged in the inshore region, while overnight foraging penguins foraged in the slope region. It was suggested that important factors for the formation of daytime foraging areas may be mainly 1), while those of overnight foragers may be primarily 3) and secondarily 6) considering chinstrap penguins may have difficulty in perceiving prey at night. Antarctic fur seals foraged mostly in the slope/offshore region during pup-rearing period. It was suggested that important factors may be mainly 4) and 6). In conclusion, feeding success may not be necessarily associated with dense aggregation of krill, but with distribution pattern of krill which enhance prey capture, and availability of myctophid fish.

This page was last modified on 30 Sep 2011

Datos de contacto

Correo electrónico: ccamlr [at] ccamlr [dot] org
Teléfono: +61 3 6210 1111
Facsímil: +61 3 6224 8744
Dirección: 181 Macquarie Street, Hobart, 7000, Tasmania, Australia
Dirección postal: PO Box 213, North Hobart 7002, Tasmania, Australia

 

Enlaces destacados

  • Lista de las medidas de conservación vigentes en la temporada 2019/20
  • Ofertas de empleo
  • Asistencia
  • Boletín Estadístico

Reuniones recientes y próximas

  • WG-ASAM-2020 - De 01 jun 2020 hasta 05 jun 2020
  • WG-SAM-2020 - De 29 jun 2020 hasta 03 jul 2020
  • WG-EMM-2020 - De 06 jul 2020 hasta 17 jul 2020
  • WG-FSA-2020 - De 12 oct 2020 hasta 23 oct 2020
  • SC-CAMLR-39 - De 26 oct 2020 hasta 30 oct 2020

Footer Links Spanish

  • Inicio de sesión
  • Correo electrónico
  • Grupos-e de la CCRVMA
  • Asistencia técnica
  • Derechos de autor
  • Descargo de responsabilidad y política de confidencialidad
  • Mapa del sitio
© Copyright - the Commission for the Conservation of Antarctic Marine Living Resources 2019, Todos los derechos están reservado..  |  Volver arriba  |  Sitio creado por Eighty Options