DSpace Repository

Parasitism rate, parasitoid community composition and host specificity on exposed and semi-concealed caterpillars from a tropical rainforest

Show simple item record

dc.contributor.author Hrcek, Jan en
dc.contributor.author Miller, Scott E. en
dc.contributor.author Whitfield, James B. en
dc.contributor.author Shima, Hiroshi en
dc.contributor.author Novotny, Vojtech en
dc.date.accessioned 2014-01-31T16:59:12Z
dc.date.available 2014-01-31T16:59:12Z
dc.date.issued 2013
dc.identifier.citation Hrcek, Jan, Miller, Scott E., Whitfield, James B., Shima, Hiroshi, and Novotny, Vojtech. 2013. "<a href="https://repository.si.edu/handle/10088/21767">Parasitism rate, parasitoid community composition and host specificity on exposed and semi-concealed caterpillars from a tropical rainforest</a>." <em>Oecologia</em>. 173 (2):521&ndash;532. <a href="https://doi.org/10.1007/s00442-013-2619-6">https://doi.org/10.1007/s00442-013-2619-6</a> en
dc.identifier.issn 0029-8549
dc.identifier.uri http://hdl.handle.net/10088/21767
dc.description.abstract The processes maintaining the enormous diversity of herbivore-parasitoid food webs depend on parasitism rate and parasitoid host specificity. The two parameters have to be evaluated in concert to make conclusions about the importance of parasitoids as natural enemies and guide biological control. We document parasitism rate and host specificity in a highly diverse caterpillar-parasitoid food web encompassing 266 species of lepidopteran hosts and 172 species of hymenopteran or dipteran parasitoids from a lowland tropical forest in Papua New Guinea. We found that semi-concealed hosts (leaf rollers and leaf tiers) represented 84 % of all caterpillars, suffered a higher parasitism rate than exposed caterpillars (12 vs. 5 %) and their parasitoids were also more host specific. Semi-concealed hosts may therefore be generally more amenable to biological control by parasitoids than exposed ones. Parasitoid host specificity was highest in Braconidae, lower in Diptera: Tachinidae, and, unexpectedly, the lowest in Ichneumonidae. This result challenges the long-standing view of low host specificity in caterpillar-attacking Tachinidae and suggests higher suitability of Braconidae and lower suitability of Ichneumonidae for biological control of caterpillars. Semi-concealed hosts and their parasitoids are the largest, yet understudied component of caterpillar-parasitoid food webs. However, they still remain much closer in parasitism patterns to exposed hosts than to what literature reports on fully concealed leaf miners. Specifically, semi-concealed hosts keep an equally low share of idiobionts (2 %) as exposed caterpillars. en
dc.relation.ispartof Oecologia en
dc.title Parasitism rate, parasitoid community composition and host specificity on exposed and semi-concealed caterpillars from a tropical rainforest en
dc.type Journal Article en
dc.identifier.srbnumber 117407
dc.identifier.doi 10.1007/s00442-013-2619-6
rft.jtitle Oecologia
rft.volume 173
rft.issue 2
rft.spage 521
rft.epage 532
dc.description.SIUnit NMNH en
dc.description.SIUnit NH-Entomology en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 521
dc.citation.epage 532


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account

Statistics