Accueil Accueil

CCAMLR

Commission pour la conservation de la faune et la flore marines de l'Antarctique

  • Accueil
  • Accès au texte
  • S'identifier

Formulaire de recherche

  • La CCAMLR
  • Mesures de conservation
  • Science
  • Pêcheries
  • Conformité
  • Données
  • Réunions
  • Publications
  • Circulaires
  • English
  • Français
  • Русский
  • Español
  • Accueil
  • Publications
  • CCAMLR Science
  • CCAMLR Science, Volume 16
  • CCAMLR Science, Volume 16 (2009):115–130

Publications

  • Documents de base
  • Bulletin statistique
    • Archives du Bulletin statistique
  • Brochure CCAMLR
  • CCAMLR Science
    • CCAMLR Science : Tous les volumes
  • Mesures de conservation
    • Parcourir les mesures de conservation
    • Mesures de conservation passées et actuelles
  • Rapports de pêcheries
  • Archive des rapports de pêcheries
  • Documents relatifs à la pêche
  • Manuels
  • Affiches et autres documents promotionnels
  • Résumés scientifiques
  • Commander une publication
    • Rapports de réunions (2013) – Achat des rapports sur support papier
  • Bibliothèque de référence des engins de pêche
Print this page
Increase font size
Decrease font size

CCAMLR Science, Volume 16 (2009):115–130

Journal Volume:
CCAMLR Science, Volume 16
Page Numbers:
115–130
Auteur(s):
La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock
download attachmentTéléchargement (677.19 Ko)

Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)

Abstract / Description: 

Age and growth of spiny icefish (Chaenodraco wilsoni) were investigated using counts of annual growth increments from sagittal otoliths. Samples were collected during research surveys by benthic trawl carried out off Joinville–D’Urville Islands (Antarctic Peninsula) in February–March 2006 and January 2007. A total of 218 specimens were selected for the study, consisting of 120 females and 98 males. The age of fish was estimated by counting annuli on transverse sections obtained by grinding and polishing whole otoliths embedded in epoxy resin in moulds. The precision of age estimates between readings was tested applying both the average percent error (APE) and the coefficient of variation (CV). Conversely, the accuracy of age estimates was not tested, so that present ageing data haveto be considered with caution.

The estimated age range was 1–5 years for males and 1–4 years for females of C. wilsoni. Applying the von Bertalanffy (VB) growth function to the age–length data, a growth curve was obtained for each sex. The estimated values of VB growth parameters L∞ (cm) and k were respectively 32.7 and 0.81 for females and 32.7 and 0.68 for males. Age-at-sexual maturity was estimated to be about 2 years for females and 2.5 years for males. Like other icefishes, C. wilsoni exhibited a high growth rate until it reached sexual maturity, although it had a much shorter life span. The part of the population of C. wilsoni caught in the study area consisted mainly of adult individuals between 1 and 3 years of age, with very few older fish.

 

This page was last modified on 11 Jan 2013

Nous contacter

E-mail: ccamlr [at] ccamlr [dot] org
Téléphone: +61 3 6210 1111
Fax: +61 3 6224 8744
Adresse: 181 Macquarie Street, Hobart, 7000, Tasmania, Australia

 

Liens rapides

  • Postes vacants
  • Liste des navires autorisés
  • Liste officielle des mesures de conservation en vigueur 2024/25
  • Accomplissements de la CCAMLR

Current and Upcoming Meetings

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

Footer Links French

  • S'identifier
  • Messagerie
  • e-groupes CCAMLR
  • Assistance technique
  • Groupes de discussion de la CCAMLR
  • Droits d’auteur
  • Clause de non-responsabilité et politique de confidentialité
  • Plan du site
© Copyright - the Commission for the Conservation of Antarctic Marine Living Resources 2025, Tous droits réservés.  |  Haut de la page  |  Site créé par Eighty Options