Extremely low infection levels of pathogens and nematodes in Trypodendron spp. (Coleoptera: Curculionidae)

Forestry Journal Pub Date : 2016-12-01 DOI:10.1515/FORJ-2016-0025

R. Wegensteiner, K. Lukášová, Hana Vanická, Soňa Zimová, M. Kacprzyk, J. Holuša

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引用次数: 1

Abstract

Abstract The striped ambrosia beetles Trypodendron lineatum and T. domesticum are timber forest pests in the Palearctic region and North America. Because only a few pathogens are known for Trypodendron species, the aim of this work was to determine the spectrum of pathogen species of T. lineatum, T. laeve, and T. domesticum. Trypodendron species were collected in pheromone traps at nine localities in the Czech Republic, five localities in Poland, and one locality in Austria. In total, 2,439 T. lineatum, 171 T. domesticum, and 17 T. laeve beetles were dissected and examined. Infection was found in only two of the 17 specimens of T. laeve and in only two of the 171 specimens of T. domesticum; in all four cases, the parasites were nematodes. Parasitisation of T. lineatum by nematodes was found in T. lineatum at eight localities with a mean (± SE) parasitisation level of 8.1 ± 4.7%. A Chytridiopsis sp. was detected in cells of the midgut epithelium of one T. lineatum specimen, and Gregarina sp. was detected in the midgut lumen of two T. lineatum specimens; no other pathogens were found in T. lineatum. The low infection rates and the tendency for infection by nematodes can be explained by the monogamy of Trypodendron spp. and their feeding on fungi in short galleries that are not connected to the galleries of conspecifics.

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赤足蝇属病原菌和线虫感染水平极低(鞘翅目:线虫科)

摘要条纹锦甲(Trypodendron lineatum)和家蝇(T. domesticum)是古北地区和北美地区的木材害虫。由于只有很少的病原体已知的赤足属物种，本工作的目的是确定T. lineatum, T. laeve和T.驯化的病原体种类的光谱。用信息素诱捕法在捷克9个地点、波兰5个地点和奥地利1个地点采集了赤足。共解剖检查了2439只线甲、171只家甲和17只叶甲。17例叶形绦虫和171例家形绦虫分别有2例和2例感染;在所有四个病例中，寄生虫都是线虫。在8个地区发现线虫寄生线纹线虫，平均(±SE)寄生率为8.1±4.7%。在1只lineatum标本的中肠上皮细胞中检测到壶壶菌，在2只lineatum标本的中肠管腔中检测到Gregarina sp;未发现其他病原菌。赤足的低感染率和受线虫感染的倾向可以解释为赤足的一夫一妻制及其在短通道中取食真菌，而短通道与同种通道不相连。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Forestry Journal

自引率

0.00%

发文量

审稿时长

4 weeks

期刊介绍： Central European Forestry Journal (published as Lesnícky Èasopis - Forestry Journal until 2016) publishes novel science originating from research in forestry and related braches. Central European Forestry Journal is a professional peer-reviewed scientific journal published 4-time a year. The journal contains original papers and review papers of basic and applied research from all fields of forestry and related disciplines. The editorial office accepts the manuscripts within the focus of the journal exclusively in English language. The journal does not have article processing charges (APCs) nor article submission charges. Central European Forestry Journal, abbreviation: Cent. Eur. For. J., publishes original papers and review papers of basic and applied research from all fields of forestry and related scientific areas. The journal focuses on forestry issues relevant for Europe, primarily Central European regions. Original works and review papers can be submitted only in English language.