Nom du corpus

Corpus Systématique Animale

Titre du document

Gastric evacuation of different foods by Nephrops norvegicus (Crustacea: Decapoda) and estimation of soft tissue ingested, maximum food intake and cannibalism in captivity

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Arthropodes_v2b_00594
Auteur(s)
  • F. Sardà 1
  • F. J. Valladares 1
Affiliation(s)
  • 1) Instituto de Ciencias del Mar, Paseo Nacional, s/n, E-08003, Barcelona, Spain
Résumé

Gastric evacuation, maximum food intake and mortality during starvation were studied inNephrops norvegicus (L.) by means of simple laboratory experiments. Lobsters were collected by trawling off Barcelona (northwest Spain) at 400 m depth in winter 1986, and were held individually or in groups and fed different types of food:Nereis spp. (soft tissue, muscle), some species of Crangonidae (mostly hard tissue, carapace) andEngraulis encrassicolus (soft and hard tissues, combined muscles and bones). The digested matter was subsequently examined and analyzed from the stomach contents. Laboratory results were compared with the stomach contents of individuals collected from the field. Gastric evaluation was calculated as weight of stomach contents at Timet = stomach-content weight × 100:weight of food ration — residual weight of food, and the characteristic appearance of identifiable food items at different digestion times (0.5, 1, 2, 3, and 5 h) was recorded and illustrated, providing a basis for establishing the time of ingestion of the last meal and the underestimation of soft, compared to hard tissues. Underestimation of soft tissues may yield errors which constitute up to 10% of the soft food actually ingested. Maximum food intake was estimated at 0.25 g g?1 body wt d?1, and feeding did not recommence until 24 h after a previous meal. Finally, we present data on mortality resulting from cannibalism which occurred in conjunction with starvation: this ranged from 0% in isolated individuals to 36.6% in individuals held in groups.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
995489D457CFD75DC3A98CBBBC594341CDA44F79
Revue

Marine Biology

Année de publication
1990
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
8.517
Sous-corpus
  • Arthropodes
Type de publication
Journal
ark:/67375/1BB-3MT1MD9H-2
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