Nom du corpus

Corpus Systématique Animale

Titre du document

Clutch size in parasitoids: the egg production rate as a constraint

Lien vers le document
Springer (journals)
Langue(s) du document
Type de document
Mots-clés d'auteur
  • Optimal foraging
  • clutch size
  • life history theory
  • constraints
  • host-parasite interactions
  • host utilization
Nom du fichier dans la ressource
  • Eric L. Charnov 1
  • Samuel W. Skinner 2
  • 1) Department of Biology, University of Utah, 84112, Salt Lake City, UT, USA
  • 2) Department of Biology, Indiana University, 47405, Bloomington, IN, USA

In many species of insect parasitoids, adult females mature eggs as they search their environment for hosts. In such species, the number of mature eggs, at the point of finding a host, is a function of the interhost time and the rate of egg maturation. Assuming that interhost search times are variable, we use a version of the marginal value theorem to derive a decision rule for optimizing the time spent exploiting individual hosts; this indirectly determines clutch size. We find that a threshold search time exists above which a female should simply lay her currently mature eggs and depart from the host. However, when the search time has been less than the threshold, a female should oviposit, but then remain on the host to mature and lay additional eggs, until the threshold time is reached.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - evolutionary biology
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 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - genetics & heredity
  • 1 - science ; 2 - evolutionary biology
  • 1 - science ; 2 - ecology
Identifiant ISTEX

Evolutionary Ecology

Année de publication
Présence de XML structuré
Version PDF
Score qualité du texte
  • Insectes
Type de publication
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