Učinkovitosti dveh različnih vab za spremljanje borovih strženarjev (Tomicus spp.)

Rakovec, Tinkara (author), Hauptman, Tine (mentor)

Borovi strženarji (Tomicus spp.) spadajo med škodljive organizme, ki jih mora javna gozdarska služba redno spremljati. Spremljanje se lahko izvaja s kontrolno-lovnimi pastmi, pri čemer se lahko uporabi različne vabe. Glavni cilj te diplomske naloge je bil primerjati učinkovitost dveh različnih vab, in sicer kombinacije etanola in α-pinena ter feromonskega pripravka Tomowit. Za namene naše raziskave smo uporabili režaste barierne pasti MultiWit, pet s feromonskim pripravkom Tomowit in pet s kombinacijo etanola in α-pinena, ki so bile za obdobje 10 tednov postavljene v sestoju rdečega bora v Bistrici pri Naklem (OE Kranj). V vseh pasteh skupaj je bilo ujetih 1172 osebkov hroščev (Coleoptera) iz 20 različnih družin. Iz poddružine podlubnikov (Scolytinae) je bilo ujetih 17 različnih vrst, najštevičneje zastopane so bile tri ksilomicetofagne vrste, Xyleborinus saxesenii, Trypodendron lineatum in Xylosandrus germanus. Ciljni vrsti spremljanja T. piniperda in T. minor sta bili v ulovu zastopani s 103 oz. 5 osebki. Več pripadnikov rodu Tomicus je bilo ulovljenih v pasteh, ki so za vabo uporabljale mešanico etanola in α-pinena, vendar statističnih razlik med dvema testiranima vabama kljub vsemu nismo odkrili. Feromonski pripravek Tomowit se je izkazal za bolj specifičnega. Glede na relativno majhno število ujetih osebkov in praktično nobene škode v okoliških gozdovih predvidevamo, da je populacija hroščev iz rodu Tomicus na našem raziskovalnem območju majhna.

• Language: Slovenian
• Keywords: Tomicus, Tomowit, etanol, α-pinen
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [T. Rakovec]
• Year: 2023
• PID: 20.500.12556/RUL-150591
• UDC: 630*4(043.2)=163.6
• COBISS.SI-ID: 165677315
• Publication date in RUL: 21.09.2023

Secondary language

• Language: English
• Title: Efficiency of two differnet lures for monitoring pine shoot beetles (Tomicus spp.)

Abstract

The bark beetles (Tomicus spp.) belong to harmful organisms that need to be regularly monitored by the public forestry service. Monitoring can be conducted using control traps, with various baits employed. The main objective of this thesis was to compare the effectiveness of two different baits: a combination of ethanol and α-pinene, and the pheromone Tomowit. For the purposes of our study, we utilized slit traps (MultiWit), five with the Tomowit pheromone, and five with the combination of ethanol and α-pinene. These traps were placed in a stand of Scots pine in Bistrica pri Naklem (OE Kranj) for a period of 10 weeks. In total, 1172 specimens of beetles (Coleoptera) from 20 different families were captured in all traps combined. Within the subfamily of bark beetles (Scolytinae), 17 different species were captured, with three xylo-mycetophagous species being the most represented: Xyleborinus saxesenii, Trypodendron lineatum, and Xylosandrus germanus. The two target species, T. piniperda and T. minor, were represented in the capture by 103 and 5 individuals. More members of the Tomicus genus were caught in traps using the ethanol and α-pinene mixture as bait; however, despite this, we did not discover any statistically significant differences between the two tested baits. The Tomowit pheromone proved to be more specific. Considering the relatively low number of captured individuals and practically no damage in the surrounding forests, we assume that the population of Tomicus bark beetles in our research area is small.

• Keywords: Tomicus, Tomowit, etanol, α-pinene