Project

Distribution and biology of the Western conifer seed bug, Leptoglossus occidentalis, in Turkey

Goal: Leptoglossus occidentalis is a new invasive forest pest in Turkey. It causes seed loss in coniferous trees which eventually have a negative impact on the regeneration capacity of coniferous forests. The pest also causes direct economic loss by decreasin pine nut production. Since Turkey is an important P. pinea nut producer, management of L. occidentalis populations in Turkey is considered as an urgent research topic. In this project, we aimed to investigate distribution of the pest in Turkey and to reveal its phenology in different climatic zones in the country.

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Kahraman Ipekdal
added a research item
The western conifer seed bug, Leptoglossus occidentalis Heidemann (1910) (Heteroptera: Coreidae), is a pest causing significant seed damage on many coniferous species. Although it is originally from Western North America, it occurs in several countries today due to frequent intercontinental exchange of related plant material. Both nymphs and adults feed on seeds by piercing their stylet into cones and thus cause conelet abortion and seed loss. Therefore, the western conifer seed bug is expected to have consequences on natural forest regeneration. But its main damage occurs on pine nut production which is one of the most profitable non-wood forest industry in several Mediterranean countries, including Turkey. The western conifer seed bug was first recorded in Turkey in 2009 and it expanded its range rapidly since then. It occurs in all regions of the country today. We named it as “çam kozalak emici böceği” (pine cone sucker bug). We aimed in this booklet to compile a Turkish review of the international knowledge on L. occidentalis produced so far. We also aimed to produce a summary in English which reviews upto date contribution of the Turkish researchers on the pest. Therefore this summary covers only the parts of the booklet related to Turkey. We also provided English versions of the table and figure legends.
Kahraman Ipekdal
added a project goal
Leptoglossus occidentalis is a new invasive forest pest in Turkey. It causes seed loss in coniferous trees which eventually have a negative impact on the regeneration capacity of coniferous forests. The pest also causes direct economic loss by decreasin pine nut production. Since Turkey is an important P. pinea nut producer, management of L. occidentalis populations in Turkey is considered as an urgent research topic. In this project, we aimed to investigate distribution of the pest in Turkey and to reveal its phenology in different climatic zones in the country.