Influence of proportion of (4S)‐cis‐verbenol in pheromone bait on Ips typographus (Col., Scolytidae) catch in pheromone trap barrier and in single traps

  title={Influence of proportion of (4S)‐cis‐verbenol in pheromone bait on Ips typographus (Col., Scolytidae) catch in pheromone trap barrier and in single traps},
  author={Rastislav Jaku{\vs} and Miroslav Bla{\vz}enec},
  journal={Journal of Applied Entomology},
Abstract:  The possibilities of increasing catching efficiency of male Ips typographus L in pheromone traps barriers and in single traps were tested. Pheromone dispensers with different percentages of (4S)‐cis‐verbenol (cV) in pheromone mixtures were used. The results show that the different male catching efficiencies of pheromone trap barriers and single traps were related to the different percentages of cV in the pheromone bait. The proportions of males were higher in pheromone trap barriers… 

Influence of the proportion of (−) α‐pinene in pheromone bait on Ips typographus (Col., Scolytidae) catch in pheromone trap barriers and in single traps

The catch of I. typographus decreased with an increase in the percentage of (−) α‐pinene in the bait, and it is not possible to increase the attractiveness of the bait having a higher percentage of cV by supplementing a certain percentage of MB with (−) β-pinene, but a slight synergistic effect of (−] α‐pinsene with MB/cV mixture is visible in this type of bait.

Effect of (+)-limonene and 1-methoxy-2-propanol on Ips typographus response to pheromone blends

Two different strategies to increase the catches of Ips typographus (L.), particularly males, in pheromone-baited traps are compared and it is suggested that replacing MB with MP in the blend will not significantly reduce trapping efficacy.

Seasonal variability of sex-ratio in Ips typographus (L.) pheromone traps in a multivoltine population in the Southern Alps

Monitoring the seasonal variation in the sex-specific responses of Ips typographus to a commercial pheromone in relation to the two generations per year occurring in the Southern Alps found that the low proportion of males in traps depends both on discrimination and on differential mortality of the sex over time.

Effect of different semiochemicals blends on spruce bark beetle, Ips typographus (Coleoptera: Scolytidae)

It is concluded that this optimal semiochemical blend may provide an effective biological pest control method for use in forest ecosystem against I. typographus, a recent new introduction to the Qilian Mountains of China.

A review: chemical ecology of Ips typographus (Coleoptera, Scolytidae)

Chemical ecology of the spruce bark beetle Ips typographus (L.) was reviewed and results of field bioassays stressed that traps baited with specific pheromones could be used as a reasonable protection measure.

Attraction of Ips typographus (Coleoptera: Curculionidae) beetles by lure-baited insecticide-treated tripod trap logs and trap trees

The main advantages of TRIPODs compared to the TRAP TREEs are first, that pheromone lures will make any spruce timber attractive to I. typographus; and second, that logs need not be decontaminated at a particular time and, consequently, they require significantly less surveillance.

Comparison of two types of ECOLURE lure on Ips typographus (L.) (Coleoptera: Scolytidae)

The efficiency of two types of pheromone dispensers (ECOLURE classic and ECOLURE tubus) was compared in 2008 and differences among the first 4 samples (checkings) were statistically insignificant.

Comparison of lure-baited insecticide-treated tripod trap logs and lure-baited traps for control of Ips duplicatus (Coleoptera: Curculionidae)

Both traps captured more adults in spring than in summer, and the higher numbers of entomophagous arthropods, including the predacious beetles Thanasimus formicarius L. and T. femoralis, were captured in the TRIPODs than in the TPTs.


A comparison of all season and standard type of ECOLURE® Dispenser EFFICACY in TRAP CATCHES of EUROPAEan SPRUCE BARK BEETLE (Ips typographus (L.)) shows a positive relationship between season and type.



Behavioural sequence in the attraction of the bark beetle Ips typographus to pheromone sources

The results support the idea of each pheromone component having a different relative importance in releasing different steps in the behavioural chain.

The use of dispensers with different release rates at pheromone trap barriers for Ips typographus

The low proportion of males per catch in traps baited with strong attractants is an additional problem, and recent commercial dispensers are designed to ensure a strong attraction.

The European struggle to control Ips typographus ― past, present and future

The Scandinavian campaign opens a new era in bark beetle management by stipulating for the commercial availability of pheromones and traps as well as for research on basic and applied aspects.

Behavioural and electrophysiological responses of the bark beetle, Ips typographus, to potential pheromone components

Electroantennogram (EAG) studies correlated well with the behavioural studies and revealed both sexes to have a lower threshold for the pheromone, (S)‐(‐)‐cis‐verbenol, than its host terpene precursor, (‐]‐alpha‐pinene, in both sexes.

Basic algorithms for random sampling and treatment randomization.

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