Inicio Inicio

CCAMLR

Comisión para la Conservación de los Recursos Vivos Marinos Antárticos

  • Inicio
  • Contenido
  • Inicio de sesión

Formulario de búsqueda

  • Medidas de conservación
  • Acerca de la CCRVMA
  • Ciencia
  • Circulares
  • Datos
  • Ejecución
  • Publicaciones
  • Reuniones
  • Pesquerías
  • English
  • Français
  • Русский
  • Español
  • Inicio
  • Publications
  • CCAMLR Science
  • Selected Scientific Papers, SC-CAMLR-SSP/9
  • Selected Scientific Papers, SC-CAMLR-SSP/9 (1992):273–285

Publicaciones

  • Documentos básicos
  • Folleto de la CCRVMA
  • Informes de pesquerías
  • Archivo de informes de pesquerías
  • Segunda Evaluación del Funcionamiento de la CCRVMA
  • Documentos relacionados con la pesca
  • Manuales y procedimientos
  • Carteles y otros materiales promocionales
  • Resúmenes de documentos de trabajo
  • Medidas de conservación
    • Medidas de conservación vigentes en el pasado y actualmente
    • Pasar revista a las Medidas de Conservación
  • Archivo de referencia sobre artes de pesca
  • Boletín Estadístico
    • Archivo del Boletín Estadístico
  • CCAMLR Science
    • Números publicados de CCAMLR Science
  • Para solicitar publicaciones
    • Informes de las reuniones (2013) – Venta de copias impresas
Print this page
Increase font size
Decrease font size

Selected Scientific Papers, SC-CAMLR-SSP/9 (1992):273–285

Journal Volume:
Selected Scientific Papers, SC-CAMLR-SSP/9
Page Numbers:
273–285
Autor(es):
Ichii, T., H. Ishii, J.L. Bengtson, P. Boveng, J.K. Jansen and M. Naganobu
download attachmentDescargar (604.51 KB)

Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island

Abstract / Description: 

Shipboard tracking studies of krill-eating predators (penguins and female fur seals) near Seal Island were conducted to identify and evaluate their foraging areas during early January 1990/91. Penguin foraging areas were found in inshore regions where krill frequently occurred but higher density areas of krill (~250 g/m2) were rather limited. In contrast, fur seal foraging areas were found in offshore regions where krill occurred only occasionally but in large aggregations (surface length about 2 to 3 km) of higher densities (~250 g/m2). In the inshore foraging areas krill undertake diurnal vertical migrations, tending to be at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at night. In the offshore foraging areas krill do not undertake any diurnal vertical migrations, staying close to the surface throughout the day. With regard to body size and maturity of krill in the inshore foraging areas, middle-sized krill (modal length 43 mm), which consisted mainly of non-gravid krill, were dominant with occasional occurrences of juveniles (modal length 21 mm). In contrast, in the offshore foraging areas large krill (modal length 47 mm) were dominant, the majority of which were gravid females. Thus, horizontal and vertical distributions and population structure of krill were totally different in the foraging areas of penguins and fur seals. The reasons why fur seals chose offshore foraging areas instead of inshore foraging areas are discussed.

This page was last modified on 06 Jan 2016

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

 

Enlaces destacados

  • Ofertas de empleo
  • Barcos con licencia para pescar
  • Lista de medidas de conservación vigentes en la temporada 2024/25
  • Logros de la CCRVMA

Recent and Upcoming Meetings

  • WG-SAM-2025
  • WG-ASAM-2025
  • WG-EMM-2025

Footer Links Spanish

  • Inicio de sesión
  • Correo electrónico
  • Grupos de discusión de la CCRVMA
  • 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 2025, Todos los derechos están reservado..  |  Volver arriba  |  Sitio creado por Eighty Options