Nom du corpus

Corpus Systématique Animale

Titre du document

Population dynamics of spot, leiostomus xanthurus , in polyhaline tidal creeks of the York River estuary, Virginia

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Poissons_v2b_003796
Auteur(s)
  • Michael P. Weinstein 1
  • Larry Scott 2
  • Steven P. O’Neil 2
  • Robert C. Siegfried 1
  • Stephen T. Szedlmayer 1
Affiliation(s)
  • 1) Virginia Institute of Marine Science, 23062, Gloucester Point, Virginia
  • 2) Department of Biology, Virginia Commonwealth University, 23284, Richmond, Virginia
Résumé

Most populations of estuarine-dependent, early life stages of marine fishes are open. As a result, it has been difficult to apply conventional population models to most systems. In this study, a marked population of young-of-year spot (Leiostomus xanthurus) was released into a polyhaline tidal creek within the Guinea Marshes of the York River estuary, Virginia. Over a 90-day study period, 221 marked fishes were recaptured. Plots of the ratio of marked to unmarked individuals (mi/ni) in subsequent samples indicated that the population was resident in the creek for up to 162 days with the average individual present for 81 days. When this population turnover rate was compared to the total population decay rate (marked plus unmarked fish), it was determined that exchange between habitats (immigration/emigration) accounted for about 36.4% of the total decay rate, with the remainder attributed to natural mortality. By correcting the overall disappearance rate for population turnover due to emigration and using this adjusted value as a measure of instantaneous mortality (z), the estimated production (over 90 days) in this population was 23,630 cal (98,870 J) per m2. This figure agrees with a previously derived estimate for spot in the Guinea marshes and is nearly two orders of magnitude higher than other reported values for this species for all size classes over the entire growing season.

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 - General Environmental Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Environmental Chemistry
Identifiant ISTEX
EC61B34638A8B88C63C1713FB14E3BBC59A28E67
Revue

Estuaries

Année de publication
1984
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
8.484
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-J6DVV15L-C
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