Nom du corpus

Corpus Systématique Animale

Titre du document

Life cycle and production of Hydrobia acuta Drap. (Gastropoda: Prosobranchia) in a hypersaline coastal lagoon

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Hydrobia acuta
  • Gastropoda
  • Prosobranchia
  • life cycle
  • production
  • hypersaline
Nom du fichier dans la ressource
Oiseaux_v2b_02698
Auteur(s)
  • R. H. Britton
Affiliation(s)
  • Station Biologique de la Tour du Valat, Le Sambuc, 13200, Arles, France
Résumé

The life cycle and annual production of Hydrobia acuta was studied in a hypersaline lagoon (s = 39‰ in summer), forming a part of solar salt works. Quantitative random samples were taken at regular intervals over a period of 15 months using a corer, and snails collected were counted and measured. Weight and biomass was calculated from a length-weight relationship and from measurements of ash content. H. acuta was a strictly annual species in the study lagoon. Recruitment takes place over a brief period in May and June, after which the breeding population dies. Growth of the new generation was slow during summer, probably due to the unfavourably high salinity. A period of rapid growth took place in autumn coinciding with a drop in salinity caused by rainfall. In winter Hydrobia hibernated by burrowing deeply into the sediment. Growth recommenced in spring when the lagoon was reflooded, but by this time the number of survivors was low. The maximum density of snails was 6 000 m?2 and maximum biomass 500 mg organic dry wt · m?2. Annual cohort production was estimated as 786 mg organic dry wt · m?2 · a?1. These figures are low compared to other studies on hydrobiid snails, and for production in inland waters, but the value for annual P/B = 4.5 is typical for a univoltine species. The relevance of the results to foraging by wading birds (the main consumers), is discussed.

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 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
A7A9B0D71388CFF97F75A6671648E7279B88A780
Revue

Hydrobiologia

Année de publication
1985
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.856
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-8PR0ZGCX-9
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