Linked Life Data

19426023

Source:http://linkedlifedata.com/resource/pubmed/id/19426023

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2009-5-11
pubmed:abstractText
Using an aphid-parasitoid-hyperparasitoid system as an example, we study the optimal oviposition strategy of a parasitoid whose offspring are subject to attack by hyperparasitoids. We assume that hyperparasitoids, which search aphid colonies for aphids that have been infected by parasitoids, decide to leave a colony when they have searched some fixed number of aphids consecutively without finding an infected one. We use a simulation model to investigate how many hosts the parasitoid should infect per colony to maximize the long-term average rate of producing eclosing offspring. We consider three different variables and deal with them one at a time: (1) N = the number of aphids in a colony, (2) H = the average number of perparasitoids visiting each colony, and (3) tau = the parasitoid travel time between colonies. The optimal number of aphids to infect in a colony is sometimes much less than the total number of aphids available. The optimal number of aphids to infect within a colony decreases with a decrease in the colony size, with an increase in the average number of perparasitoid visits, and with a decrease in travel time between aphid colonies.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jan
pubmed:issn
0003-0147
pubmed:author
pubmed:issnType
Print
pubmed:volume
141
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
120-38
pubmed:dateRevised
2009-6-16
pubmed:year
1993
pubmed:articleTitle
Optimal egg distribution among host patches for parasitoids subject to attack by hyperparasitoids.
pubmed:publicationType
Journal Article