Menu

Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

Postnatal dispersal of wandering albatrosses Diomedea exulans: implications for the conservation of the species

Author:
  • H Weimerskirch
  • Susanne Åkesson
  • D Pinaud
Publishing year: 2006
Language: English
Pages: 23-28
Publication/Series: Journal of Avian Biology1994-01-01+01:00
Volume: 37
Issue: 1
Document type: Journal article
Publisher: Federation of European Neuroscience Societies and Blackwell Publishing Ltd

Abstract english

Many large marine vertebrates are today threatened by human activities and it is therefore crucial to obtain information on their distribution and behaviour at sea. In particular little is known about the time necessary for juveniles to acquire the foraging skills of adults. We tracked 13 juvenile wandering albatrosses Diomedea exulans by satellite telemetry during their first year at sea. They covered an average distance of 184,000 km during the first year and restricted their dispersal to the unproductive waters of the subtropical Indian Ocean and Tasman Sea. This region of low wind velocities does not overlap with the foraging areas used by adults. After an innate phase of rapid dispersal with a fixed flight direction, young birds progressively increased their daily flight distances and attained adult flight efficiency within their first six months at sea. The complete overlap of the juveniles' foraging ranges with major long-line fisheries in the subtropical waters constitutes a major threat that could jeopardize the long term recovery ability of populations of the endangered wandering albatross in the Indian Ocean.

Keywords

  • Biological Sciences

Other

Published
  • ISSN: 0908-8857
Susanne Åkesson
E-mail: susanne [dot] akesson [at] biol [dot] lu [dot] se

Professor

Evolutionary ecology

+46 46 222 37 05

+46 70 245 04 23

E-B362

50