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
  • English
  • Français
  • Русский
  • Español
  • Home
  • Meetings
  • WG-FSA-11/04
Print this page
Increase font size
Decrease font size

Data on reproduction biology of Dissostichus mawsoni from the Ross Sea (Statistical Subarea 88.1)

Doc Number: WG-FSA-11/04
Author(s): A.K. Zaytsev (Russia)
Submitted By: ()

Please complete a document request form to access this document

Abstract: 

Macroscopic data of the field research obtained during fishing trips on board Spanish longliner "Tronio" in 2007-2011 were given. Gonadosomatic indices (GSI) of 823 Antarctic toothfish individuals from various SSRU in the Ross Sea were calculated. For one specimen with maximum observed weight of gonads (15.5 kg, GSI – 23.85 %), the individual absolute fecundity (IAF) and relative fecundity (RF) were calculated, which were 976000 eggs and 15 eggs/gram, accordingly.
Indexes of maturity rate of gonads on various grounds in the Ross Sea during the fishery season confirmed previous conclusions about significant extension of Antarctic toothfish spawning period.
According to our data, the maturity length of Antarctic toothfish males and females are different. Thus, females achieved 50 % of gonad maturity at length of 99-102 cm, and males - 102-105 cm. The pattern remained the same when determining 95 % of fish with mature gonads. Thus, 95 % of females with mature gonads were noted at length of 120-123 cm, and among males - at length of 123-126 cm. In our collections, we noted occurrence of females with maturing sexual products at length more than 81 cm, and males - more than 87 cm.
 

This page was last modified on 08 Oct 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 2020/21
  • CCAMLR Brochure
  • Fishery Reports
  • 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 2021, All rights reserved.  |  Top of page  |  Site by Eighty Options