Home Home

CCAMLR

Commission for the Conservation of Antarctic Marine Living Resources

  • Home
  • Skip to Content
  • Log in

Search form

  • About CCAMLR
  • Conservation measures
  • Science
  • Fisheries
  • Compliance
  • Data
  • Meetings
  • Publications
  • Circulars
  • English
  • Français
  • Русский
  • Español
  • Home
  • Publications
  • CCAMLR Science
  • CCAMLR Science, Volume 8
  • CCAMLR Science, Volume 8 (2001):133–146

Publications

  • Basic Documents
  • Statistical Bulletin
    • Statistical Bulletin - Archive
  • CCAMLR Brochure
  • CCAMLR Science
    • Table of Contents
  • Conservation measures
    • Browse conservation measures
    • Past and present conservation measures
  • Commission reports
  • Scientific Committee reports
  • Fishery Reports
  • Fishery Reports archive
  • Fishing-related documents
  • Manuals
  • Posters and other promotional material
  • Scientific Abstracts
  • Order a publication
Print this page
Increase font size
Decrease font size

CCAMLR Science, Volume 8 (2001):133–146

Journal Volume:
CCAMLR Science, Volume 8
Page Numbers:
133–146
Author(s):
Frolkina, G.A
download attachmentDownload (836.66 KB)

Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf

Abstract / Description: 

Biostatistical data obtained by Soviet research and commercial vessels from 1970 to 1991 have been used to determine the age-length composition of mackerel icefish (Champsocephalus gunnari) from different parts of the South Georgia area. An analysis of the spatial distribution of C. gunnari size and age groups over the eastern, northern, western and southern parts of the shelf, and near Shag Rocks, revealed a similar age-length composition for young fish inhabiting areas to the west of the island and near Shag Rocks. Differences were observed between those those two groups and the eastern group. The larger number of mature fish in the west is related to the migration of maturing individuals from the eastern and western parts of the area. It is implied that part of tlne western group migrates towards Shag Rocks at the age of 2-3 years. It has been found that, by number, recruits represent the largest part of the population, whether a fishery is operating or not. As a result of this, as well as the species' ability to live not only in off-bottom, but also in pelagic waters, an earlier age of sexual maturity compared to other nototheniids, and favourable oceanographic conditions, the C. gunnari stock could potentially recover quickly from declines in stock size and may become abundant in the area, as has been demonstrated on several occasions in the 1970s and 1980s.

This page was last modified on 21 Nov 2012

Contact us

Email: ccamlr [at] ccamlr [dot] org
Telephone: +61 3 6210 1111
Fax: +61 3 6224 8744
Address: 181 Macquarie Street, Hobart, 7000, Tasmania, Australia
Postal address: PO Box 213, North Hobart 7002, Tasmania, Australia

 

Quick Links

  • Job vacancies
  • Schedule of Conservation Measures in Force 2021/22
  • Statistical Bulletin
  • CCAMLR Brochure

Recent and Upcoming Meetings

  • Log in
  • CCAMLR e-groups
  • Support
  • Copyright
  • Disclaimer and Privacy Policy
  • Sitemap
  • Intranet
  • Webmail
© Copyright - the Commission for the Conservation of Antarctic Marine Living Resources 2025, All rights reserved.  |  Top of page  |  Site by Eighty Options