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Titre du document / Document title

Some aspects of the biology of the deep-water crab, Chaceon affinis (Milne-Edwards and Bouvier, 1894) off the Azores

Auteur(s) / Author(s)

PINHO Mario R. (1) ; GONCALVES Joao M. (1) ; MARTINS Helen R. (1) ; MENEZES Gui M. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Departamento de Oceanografia e Pescas, Universidade dos Açores, Cais de St. Cruz, 9901-862 Horta, Faial, Açores, 9901-862 Horta, Faial, PORTUGAL

Résumé / Abstract

During 1997, quarterly exploratory cruises of the R/V Archipelago were carried out in order to study the deep water crab Chaceon affinis [Res. Camp. Sci. Mónaco Fasc. VII (1894) 1], South of Pico island (Azores) and at the Menez Gwen hydrothermal vent area (SW of the Azores, within the Azorean Economic Exclusive Zone). The crabs were caught with bottom traps according to a specified survey design. Different areas between 300 and 1200 m depth were surveyed, Information from previous collections was also compiled and analysed. A total of 1153 crabs (726 males and 427 females) were caught at depths ranging from 600 to 1100 m on rocky and/or muddy bottoms. Size ranged from 39 to 177 mm carapace length (CL), the males being larger than females. Males were relatively more abundant at depths <800 m and females relatively more abundant at depths >800 m. The greatest abundance occurred at depths from 700 to 800 m. Ovigerous females, which were consistently >70 mm CL, were found only from October to March. An annual reproductive cycle is suggested, Size at first maturity for the females, was estimated to be within the size range of 83-97 mm CL. Other ecological and biological information such as distribution, morphometric aspects related to reproduction, occurrence of parasites and epibionts, are discussed, as well as by-catch species.

Revue / Journal Title

Fisheries research    ISSN  0165-7836   CODEN FISRDJ 

Source / Source

Congrès
ICES Annual Science Conference, Lisbon , PORTUGAL (16/09/1998)
2001, vol. 51, no 2-3 (311 p.)  (32 ref.), [Notes: Selected papers including contributions from European Commission FAIR Project (95/655) "Developping deep-water fisheries: data for their assessment and for understanding their interaction with and impact on a fragile environment"], pp. 283-295

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1981) (Revue)

Mots-clés anglais / English Keywords

Bathymetry

;

Biometrics

;

Length

;

Carapace

;

Body size

;

Sex ratio

;

Population structure

;

Reproduction

;

Deep water

;

Hydrothermal vent

;

Azores

;

North Atlantic

;

Atlantic Ocean Islands

;

Atlantic Ocean

;

Marine environment

;

Population dynamics

;

Brachyura

;

Decapoda

;

Crustacea

;

Arthropoda

;

Invertebrata

;

Mots-clés français / French Keywords

Bathymétrie

;

Biométrie

;

Longueur

;

Carapace

;

Taille corporelle

;

Sex ratio

;

Structure population

;

Reproduction

;

Eau profonde

;

Source hydrothermale

;

Açores

;

Océan Atlantique Nord

;

Chaceon affinis

;

Iles Atlantiques

;

Océan Atlantique

;

Milieu marin

;

Dynamique population

;

Brachyura

;

Decapoda

;

Crustacea

;

Arthropoda

;

Invertebrata

;

Mots-clés espagnols / Spanish Keywords

Batimetría

;

Biometría

;

Longitud

;

Exoesqueleto

;

Talla corporal

;

Proporción de sexos

;

Estructura población

;

Reproducción

;

Agua profunda

;

Fuente hidrotermal

;

Azores

;

Océano Atlántico Norte

;

Islas Atlántico

;

Océano Atlántico

;

Medio marino

;

Dinámica población

;

Brachyura

;

Decapoda

;

Crustacea

;

Arthropoda

;

Invertebrata

;

Localisation / Location

INIST-CNRS, Cote INIST : 19360, 35400009509879.0140

Nº notice refdoc (ud4) : 1034460



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