A Viral Pathogen from Pine Processionary Moth, Thaumetopoea pityocampa (Denis & Schiffermuller, 1775) (Lepidoptera: Notodontidae)

IF 0.7 Q3 FORESTRY

SEEFOR-South-East European Forestry Pub Date : 2021-05-24 DOI:10.15177/SEEFOR.21-07

M. Yaman

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引用次数: 1

Abstract

Pine processionary moth, Thaumetopoea pityocampa (Den. & Schiff.) is a serious defoliator in pine forests. Its larvae cause defoliation by eating leaves mainly on coniferous species, Pinus brutia, P. nigra, P. pinaster, and P. pinea in Turkey. Cypovirus is the most common entomopathogen in T. pityocampa populations. In this study, the ultrastructure of the cypovirus of T. pityocampa was observed in the intestine lumen of the predatory beetle, Calasoma sycophanta L. (Coleoptera: Carabidae), which supports the hypothesis of possible transmission of the virus to T. pityocampa populations by the predatory beetle. Polyhedral occlusion bodies (OBs) and virions were examined by electron microscopy. OBs of the virus were of irregular shape and 2.1 μm (1.2-3) in diameter, and each of them included up to 50 virions in a cross-section. Virions were icosahedral and 78.3 (65-90) nm in size and each virion had surface spikes. Smaller OBs, larger virions and a high number of virions per cross-section were the main features of the cypovirus in T. pityocampa. Our observations make us conclude that the predator beetle, C. sycophanta, may disseminate OBs of cypovirus when preying upon infected T. pityocampa larvae.

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松毛虫的一种病毒病原体（Denis&Schiffermuller，1775）（鳞翅目：齿蛾科）

松毛虫是松树林中一种严重的落叶性害虫。它的幼虫主要通过吃针叶物种的叶子来引起落叶，如土耳其的白松、黑松、松和松。Cypovirus是锥虫种群中最常见的昆虫病原体。在本研究中，在捕食性甲虫Calasoma sychophanta L.（鞘翅目：Carabidae）的肠腔中观察到了T.pityocampa cypous的超微结构，这支持了捕食性甲虫可能将病毒传播给T.pityocanpa种群的假设。用电子显微镜检查了多面体闭塞体（OBs）和病毒粒子。该病毒的OBs形状不规则，直径2.1μm（1.2-3），每个OBs在一个横截面中包含多达50个病毒粒子。病毒粒子是二十面体，大小为78.3（65-90）nm，并且每个病毒粒子具有表面尖峰。较小的OBs、较大的病毒粒子和每个横截面的高数量的病毒粒子是皮氏锥虫中cypovirus的主要特征。我们的观察结果使我们得出结论，食肉甲虫C.sychophanta在捕食受感染的锥虫幼虫时，可能会传播密码病毒OBs。

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

SEEFOR-South-East European Forestry FORESTRY-

CiteScore

1.20

自引率

16.70%

发文量

审稿时长

8 weeks

期刊介绍： The primary aim of the SEEFOR journal is to publish original, novel and quality articles and thus contribute to the development of scientific, research, operational and other activities in the field of forestry. Besides scientific, the objectives of the SEEFOR are educational and informative as well. SEEFOR should stimulate intensive professional and academic work, teaching, as well as physical cooperation of institutions and interdisciplinary collaboration, a faster ascendance and affirmation of young scientific personnel. SEEFOR should contribute to the stronger cooperation between the science, practice and society, and to the overall dissemination of the forestry way-of thinking. The scope of the journal’s interests encompasses all ecological, economical, technical, technological, social and other aspects of forestry and wood technology. The journal is open for publishing research from all geographical zones and study locations, whether they are conducted in natural forests, plantations or urban environments, as long as methods used in the research and obtained results are of high interest and importance to South-east European and international forestry.