Redundancy, synergism, and active inhibitory range of non-host volatiles in reducing pheromone attraction in European spruce bark beetle Ips typographus
Article Abstract:
The antennally-active non-host volatiles (NHV) from angiosperm birch and aspen trees on the European spruce bark beetle Ips typographus by pheromone baited traps are investigated. The optimal combinations of non-host volatiles (NHV) and verbenone have the potential to protect forests against Ips typographus by reducing or stopping attacks on suitable host trees.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2003
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A recently acquired host plant provides an oligophagous insect herbivore with enemy-free space
Article Abstract:
The possibility that Enemy-free space (EFS) underlies the recently recorded increase in Phthorimaea operculella densities on tomato plants in a few areas within its geographical range is studied. It is shown that all three conditions proposed by Berdegue et al. to demonstrate EFS are fulfilled through field experiments in Ethiopia.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2004
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Some dynamical consequences of parasitoid diapause
Article Abstract:
Parasitoid diapause usually serves to synchronize parasitoids with host populations that are undergoing diapause, to avoid some period of unsuitable condition. An attempt is made to show that in general, non-synchronizing parasitoids can potentially have a strong destabilizing influence on parasitoid-host dynamics.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2004
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- Abstracts: Neonatal growth and survival of rodents in response to variation in maternal dietary nitrogen: Life history strategy vs dietary niche
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