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.

Europe, Bark beetles

---

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.

Management dynamics, Energy Management, Management, Company business management, Plant communities, Energy management systems, Building energy management software

---

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.

Botany, Plant ecology, Parasitological research

Similar abstracts:

• Abstracts: Neonatal growth and survival of rodents in response to variation in maternal dietary nitrogen: Life history strategy vs dietary niche
• Abstracts: Testing life history predictions in a long-lived seabird: a population matrix approach with improved parameter estimation
• Abstracts: Population size and the risk of local extinction: empirical evidence from rare plants. Effects of landscape context on herbivory and parasitism at different spatial scales
• Abstracts: Environmental influence and cohort effects in a sexual ornament in the house sparrow, Passer domesticus. Dynamics of an immune response in house sparrows Passer domesticus in relation to time of day, body condition and blood parasite infection

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.