Behavior of adult and larval Platysoma cylindrica (Coleoptera: Histeridae) and larval Medetera bistriata (Diptera: Dolichopodidae) during subcortical predation of Ips pini (Coleoptera: Scolytidae)

Brian H. Aukema; Kenneth F. Raffa

doi:10.1023/B:JOIR.0000025136.73623.f5

Behavior of adult and larval Platysoma cylindrica (Coleoptera: Histeridae) and larval Medetera bistriata (Diptera: Dolichopodidae) during subcortical predation of Ips pini (Coleoptera: Scolytidae)

Brian H. Aukema, Kenneth F. Raffa

Entomology

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

The most abundant predators of the pine engraver, Ips pini (Say), include Platysoma cylindrica (Paykull) and Medetera bistriata Parent. We amended "bark sandwiches" with pine engravers and adult P. cylindrica and larval M. bistriata, and report observations on these endophytic predators. Adult P. cylindrica preferred adult prey, and appeared to be facultative egg predators, which contrasts with other Histeridae. The larvae of P. cylindrica fed on pine engraver larvae. Protection from predators is generally assumed to be an advantage of an endophytic life history, but we found that this predator exploited the herbivore's gallery architecture to facilitate prey capture. Larval M. bistriata also fed on pine engraver larvae. Immediate paralysis or death of the prey followed a strike with their tentorial rods. Such rapid immobilization, in conjuction with the glandular histology of Medetera spp., suggests that they use a toxin to arrest prey.

Original language	English (US)
Pages (from-to)	115-128
Number of pages	14
Journal	Journal of Insect Behavior
Volume	17
Issue number	1
DOIs	https://doi.org/10.1023/B:JOIR.0000025136.73623.f5
State	Published - Jan 2004

Bibliographical note

Funding Information:
We thank the Wisconsin Department of Natural Resources for providing the trees and sites for insect collection. Field and laboratory assistance by S. Eastwood, R. Hoffman, J. Ludden, and G. Richards was greatly appreciated. M. Clayton, Department of Statistics, UW-Madison, provided statistical advice. J. Gruber, Department of Entomology, UW-Madison, provided valuable help with Histerinae literature. This study was supported by the U.S. Department of Agriculture (USDA NRI AMD 96 04317, USDA CSREES 2001-35302-10952), the Wisconsin Department of Natural Resources, the University of Wisconsin-Madison College of Agricultural and Life Sciences, S. C. Johnson and Son, Inc., and an Elsa and Louis Thomsen Wisconsin Distinguished Fellowship awarded to B.H.A.

Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.

Keywords

Dolichopodidae
Endophytic
Histeridae
Ips pini
Predation
Toxin

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Behavior of adult and larval Platysoma cylindrica (Coleoptera: Histeridae) and larval Medetera bistriata (Diptera: Dolichopodidae) during subcortical predation of Ips pini (Coleoptera: Scolytidae). / Aukema, Brian H.; Raffa, Kenneth F.
In: Journal of Insect Behavior, Vol. 17, No. 1, 01.2004, p. 115-128.

Research output: Contribution to journal › Article › peer-review

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abstract = "The most abundant predators of the pine engraver, Ips pini (Say), include Platysoma cylindrica (Paykull) and Medetera bistriata Parent. We amended {"}bark sandwiches{"} with pine engravers and adult P. cylindrica and larval M. bistriata, and report observations on these endophytic predators. Adult P. cylindrica preferred adult prey, and appeared to be facultative egg predators, which contrasts with other Histeridae. The larvae of P. cylindrica fed on pine engraver larvae. Protection from predators is generally assumed to be an advantage of an endophytic life history, but we found that this predator exploited the herbivore's gallery architecture to facilitate prey capture. Larval M. bistriata also fed on pine engraver larvae. Immediate paralysis or death of the prey followed a strike with their tentorial rods. Such rapid immobilization, in conjuction with the glandular histology of Medetera spp., suggests that they use a toxin to arrest prey.",

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Behavior of adult and larval Platysoma cylindrica (Coleoptera: Histeridae) and larval Medetera bistriata (Diptera: Dolichopodidae) during subcortical predation of Ips pini (Coleoptera: Scolytidae)

Abstract

Bibliographical note

Keywords

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