271. Na kaj moramo biti pozorni, ko izbiramo feromonski pripravek za ulov osmerozobega smrekovega lubadarja v režaste pasti?Nina Šramel, Andreja Kavčič, Marija Kolšek, Maarten De Groot, 2021, drugi znanstveni članki Ključne besede: gozdovi, varstvo gozdov, Ips typographus, feromonski pripravki, analiza učinkovitosti, podlubniki, ulov lubadarja, indeks učinkovitosti
Objavljeno v DiRROS: 18.05.2021; Ogledov: 1271; Prenosov: 882
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277. Estimating the most effective and economical pheromone for monitoring the European spruce bark beetleNina Šramel, Andreja Kavčič, Marija Kolšek, Maarten De Groot, 2021, izvirni znanstveni članek Povzetek: In recent decades, there have been an increasing number of outbreaks of Ips typographus in Europe. A large amount of sanitary felling has taken place, with significant economic and ecological consequences. In order to anticipate such large%scale outbreaks, an effective monitoring system should be set up. One important aspect of monitoring is deciding which pheromone to use. Therefore, we decided to test five different commercially available pheromone lures under different disturbance conditions: Pheroprax%, IT Ecolure Extra%, Ipstyp%, Ipsowit% and Typosan%. We investigated the ability of the pheromones to distinguish between disturbed and undisturbed locations, their cost%efficiency ratio, and side effects such as bycatch abundance and composition. We set 50 traps in two areas with sites that were disturbed and undisturbed by windstorms. We collected the catch from traps every 1%2 weeks from the end of March until the end of September in 2019. We found that IT Ecolure Extra%, Ipsowit% and % Pheroprax% caught the most I. typographus and best showed changes in the trap catch of I. typographus throughout the whole season. There was a low amount of bycatch (<6% of the total catch) and a low number of predators (a few specimens), but some groups seem to prefer certain pheromones. The cost of the pheromones increased with their effectiveness. However, pheromone costs are low relative to the personnel costs involved in setting traps and collecting the catch. Based on all of the gathered data, we created an index which helps to assess the cost%efficiency of the five chosen commercially available pheromones. We also present guidelines on how to make such an index to assist other researchers in choosing the right pheromone for monitoring populations of I. typographus or other bark beetle species.
Ključne besede: bark beetles, cost-efficiency, Ips typographus, monitoring pheromones, Picea abies
Objavljeno v DiRROS: 21.01.2021; Ogledov: 1446; Prenosov: 795
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278. Confirmed and potential wild hosts of the Spotted wing drosophila (Drosophila suzukii) in SloveniaMaarten De Groot, Andreja Kavčič, Jaka Razinger, 2020, izvirni znanstveni članek Povzetek: The spotted wing drosophila (Drosophila suzukii (Matsumura)) is a highly invasive species and attacking different species of berry carrying hosts. Much research has already been done on the crop hosts over the world and in Slovenia, but for wild hosts less is known. On basis of literature and fieldwork we prepared a list of potential and actual known species of wild hosts for Slovenia. In 2019, berries of different species were collected and D. suzukii was either reared from these berries or berries were dissected. In total we found in the literature for Europe 99 species which were used as host for D. suzukii. For Slovenia we found 71 potential hosts and 14 hosts which were actually infested. in Slovenia there was a broad range of potential hosts from 41 genera. The genera with the most potential hosts were Prunus, Lonicera and Vaccinium. Among the potential hosts were also many species which were invasive alien or alien species. The list was discussed in the context of management implications and further research on D. suzukii in Slovenia.
Ključne besede: spotted wing drosophila, berries, potential hosts, wild hosts, forests, pest control, Slovenia
Objavljeno v DiRROS: 11.12.2020; Ogledov: 1225; Prenosov: 539
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279. Poročilo o preskusu št.: LVG 2020-371 : opis vzorca:Pinus, les, lubje, sekanci : namen testiranja: sum na: Fusarium circinatumNikica Ogris, Barbara Piškur, Andreja Kavčič, Tašja Cvelbar, Špela Jagodic, 2020, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize
Objavljeno v DiRROS: 11.12.2020; Ogledov: 883; Prenosov: 0 |
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