Evaluating the effectiveness of installations for monitoring and control of Ips cembrae (Heer)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F23%3A43923927" target="_blank" >RIV/62156489:43410/23:43923927 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.26202/sylwan.2023029" target="_blank" >https://doi.org/10.26202/sylwan.2023029</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.26202/sylwan.2023029" target="_blank" >10.26202/sylwan.2023029</a>

Result language

angličtina

Original language name

Evaluating the effectiveness of installations for monitoring and control of Ips cembrae (Heer)

Original language description

The large larch bark beetle Ips cembrae (Heer) is the primary pest of Larix decidua Mill., and local outbreaks have been recorded in Europe. In 2020, the effectiveness of trap trees, tripods, poisoned tripods, and slots traps against I. cembrae was evaluated. The research was carried out at 3 sites with larch monocultures with differing I. cembrae population density. All four installations were set up at each study site in 4 replicates. Trap trees and tripods were installed in two series (Series 1 to capture the overwintering generation and Series 2 for summer generations of I. cembrae) with the recording of the numbers of nuptial chambers, maternal galleries, and the stage of I. cembrae development occurring in the center of all logs forming the tripods and in the 4 control sections in the trap tree. Poisoned tripods were installed and treated with a 1% solution of Vaztak insecticide every month. Both the poisoned tripods and slot traps (Theysohn) were baited with Cembräwit pheromone lure, and the lure was reapplied after 8 weeks. The poisoned tripods and slot traps were checked at 14 day intervals. The number of I. cembrae adults was determined from samples stored in 75% ethanol. The flight activity of I. cembrae (from 15 AprilMINUS SIGN 30 September) confirmed the presence of two generations. Trap trees captured a significantly larger number of adults than tripods in both the overwintering and summer generations of I. cembrae. Trap trees were infested throughout the trunk profile, while I. cembrae did not occur on 26% of tripod logs. We found that I. cembrae mostly infested larch trunks from 6 cm in diameter and infestation density increased with increasing trunk diameter. The poisoned tripods captured more adults of both the overwintering and summer generations of I. cembrae than the slot traps. The sex ratio of I. cembrae was determined on traps and tripods from the number of maternal galleries on nuptial chambers, while in slot traps and on poisoned tripods it was established by the dissection of captured adults. The number of females on the trap trees and tripods was significantly higher than in the slot traps and on the poisoned tripods. In the slot traps and on the poisoned tripods, the number of females and males was equal. All installations were found to be effective and can be used in forest protection of larch against I. cembrae.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10616 - Entomology

Project

<a href="/en/project/QK1920433" target="_blank" >QK1920433: Influence of protective measures to populations bark beetles according on population density</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Sylwan

ISSN

0039-7660

e-ISSN

—

Volume of the periodical

167

Issue of the periodical within the volume

4

Country of publishing house

PL - POLAND

Number of pages

12

Pages from-to

233-244

UT code for WoS article

001058347400001

EID of the result in the Scopus database

2-s2.0-85181040830