Survey of the Seasonal Flight Pattern of Ips typographus L. with an Attractant Trap in Slovakia (original) (raw)
Related papers
2011
The numbers of Ips typographus beetles captured in treated tripod trap logs (tripods) were compared to catches from Theysohn pheromone traps (TPTs). In 2010, at each of the three localities, five TPTs and five tripods baited with Pheagr IT pheromone evaporators were installed with 10 m spacing. Weekly inspections were made during the entire period of I. typographus flight activity (April 30 – October 1). The tripods were treated with insecticide Vaztak 10 SC on April 23, 2010 and then repeatedly every seven weeks along with the renewal of the pheromone evaporator. The study showed that the TPTs trapped approximately one-third more beetles than did the tripods. The TPT captures showed a dominance of females over males, while in tripods the sex ratio was balanced. The TPTs and tripods both trapped approximately the same numbers of males, but the females were distinctly more numerous in the TPTs. In both cases, more adults were captured during spring than in summer. K e y w o rd s : Ip...
Journal of forest science, 2018
The numbers of nontarget arthropods captured by Theysohn pheromone traps (TPTs) and insecticide- treated tripod trap logs (TRIPODs) were compared; both kinds of traps were baited with pheromone lures Pheagr IT for Ips typographus. In 2010, 15 TPTs and 15 TRIPODs were deployed (with a 10-m spacing) in a forest in the north - eastern Czech Republic. The TPTs and TRIPODs were inspected weekly during the entire period of I. typographus flight activity (30 April-1 October). The TRIPODs were sprayed with Vaztak 10 SC insecticide every 7 weeks; at each spraying, the pheromone evaporators were renewed. Higher numbers of entomophagous arthropods, including the predacious beetles Thanasimus formicarius and T. femoralis, were captured by the TRIPODs than by the TPTs. The number of Thanasimus spp. captured by TRIPODs was especially high at the end of April. The efficacy of TRIPODs for the control of I. typographus could be maintained while the kill of nontarget organisms could be reduced by de ...
Migration in spruce bark beetles ( Ips typographis L.) and the efficiency of pheromone traps
Journal of Applied Entomology, 1997
Mark-release-recapture experiments with both newly emerged and flight experienced Ips typographus L. were performed in a pine forest near Prague. Three concentric trap circles around the release site with a radius of 5 m, 200 m and 500 m, and intertrap distances of 6 m, 16 m and. maximally, 40 m, were installed with the intention of collecting all dispersing bark beetles ready to respond to pheromone lures. The results show that even without wind and no potential host trees in the surroundings, only about one-third (35.4%) of the emerging beetles in an infested site can be eliminated locally with phermomone traps. At least 12.2% of the emerging beetles (25.7% of the recaptures), perform an adaptive migration flight, which brings them beyond the range of local pheromone traps. The estimated proportion of emigrants can rise over 50%, if most of the freshly emerged beetles that have never been recaptured are assumed to have left the experimental area. Electroantennograms recorded in the laboratory at different times after emergence indicate that the delayed response to aggregation pheromones in migrating bark beetles is not the result of a delayed maturation of the antennal receptor cells, but obviously governed by the central nervous system. The notion of precopulatory migration in 25–50% of the individuals in an I. typographus population can explain why pheromone traps can never eliminate all emerging beetles, and why so many bark beetles can be collected far away from any breeding sites.
Evaluation of attractants and traps for monitoring small banded pine weevil Pissodes castaneus
Journal of Applied Entomology
Young forests (1 to 10 years old), especially those growing in clear-cut areas, can be heavily injured by weevils (Coleoptera, Curculionidae). Among them, the large pine weevil, Hylobius abietis (Linnaeus, 1758), is considered the most important pest of 1-to 3-year-old seedlings in replanted coniferous forests in central and northern Europe. Adults of this species move to reforested areas from adjacent stands and are attracted by the resin volatiles emanated by the stumps of coniferous trees left behind after harvesting. The beetles damage a wide variety of conifer and broadleaved trees by eating the bark, which results in the weakening or death of the seedlings. The small banded pine weevil, Pissodes castaneus (DeGeer, 1975) (= P. notatus),
2019
The large pine weevil Hylobius abietis is the main pest of coniferous seedlings in Europe 17 and causes substantial damage in areas that have been clear-cut or otherwise disturbed. We 18 compared the efficacy of different attractants for the capture of H. abietis adults in pitfall traps. The 19 field experiment was performed from mid-April to the end of August 2018 at six plots in Central 20 Europe located in spruce stands that had been clear-cut. At each plot, we compared five attractants: 21 one pine twig with ethanol, Hylodor, alpha-pinene + ethanol, turpentine oil and ethanol (separated), 22 and turpentine oil + ethanol (not separated). Traps without attractant served as a control. Six traps 23 for each attractant or control were distributed at each plot. Of the total number of H. abietis adults 24 trapped, 43.3, 20.5, 17.9, 9.8, 8.5 and 0.5% were captured in traps with pine twigs with ethanol, alpha25 pinene, Hylodor, turpentine, oil + ethanol (separated), turpentine oil + etha...
The Effect of Attractants on Pine Bark Beetles
2006
We tested the effect of monoterpenes and aggregation pheromones on pine bark beetles in Romanian pine stands, from spring 2000 to 2005. We recorded the number of beetles captured in winged-funnel traps, and we compared the results by evaluating the intensity of attraction (number of insects captured per day per trap). Our results reveal that the primary attractants - monoterpenes by themselves or in combination - have an attractive effect on Tomicus sp., Trypodendron sp., Hylurgops sp. and Hylastes sp., while traps containing aggregation pheromones mostly captured the bark beetles Ips sexdentatus, I. acuminatus and I. typographus. These traps captured a higher number of the predator Thanasimus formicarius, than traps containing monoterpenes.