The study presents new data on spatial distribution of bark beetle pathogens, on changes in frequency over several years and on their prevalence during different time periods within a year from several locations within the wilderness reserve Dürrenstein (Lower Austria). The occurrence of pathogens was investigated in Ips typographus (during five years), in Pityogenes chalcographus (during two years) and in Ips amitinus (in one year). In total, seven pathogen species could be detected in I. typographus . The most dominant pathogen species were the Ips typographus -Entomopoxvirus (ItEPV), the sporozoan species Gregarina typographi and the microsporidium Chytridiopsis typographi ; the latter two pathogen species were recorded every year and at about similar high ( G. typographi ) or low ( C. typographi ) rates, the ItEPV in strongly varying rates. The neogregarine Mattesia cf. schwenkei and the two microsporidia Nosema typographi and Unikaryon montanum were found in I. typographus only sporadically and the rhizopodan species Malamoeba scolyti was found once. The number of infected males and females was relatively similar with almost all pathogen species in most of the years except U. montanum , which occurred exclusively in females. Three pathogen species were recorded in P. chalcographus which were Gregarina typographi, Mattesia cf. schwenkei and Chytridiopsis typographi . Two pathogen species were observed in I. amitinus, Gregarina typographi and Chytridiopsis typographi .

中文翻译：

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在病原体发生 Ips的typographus 和从旷野储备Dürrenstein（下奥地利州）其他云杉小蠹虫：（象甲科鞘翅目）

这项研究提供了新的数据，有关树皮甲虫病原体的空间分布，几年中频率的变化以及一年中来自荒野保护区Dürrenstein（下奥地利州）几个地方的不同时期的流行率。在 Ips typographus （五年内）， Pityogenes chalcographus （两年内）和 Apsinmitus （一年内）中调查了病原体的发生 。总共有七种病原体物种可以在 I. typographus中发现 。最主要的病原体种类是 Ips typographus- Entomopoxvirus（ItEPV），孢子 虫Gregarina typographi 和微孢子虫 拟y虫 ; 每年记录后两种病原体物种，并且其大约高（ G. typographi ）或低（ C. typographi ）比率，ItEPV的比率变化很大。新gregarine Mattesia 参见。 schwenkei 和两个微孢子虫 孢子虫病typographi 和 Unikaryon montanum 中发现 一个typographus 只是偶尔和rhizopodan种 Malamoeba scolyti 被发现一次。在大多数年份中，除 U. montanum 外，几乎所有病原体种类的男性和女性感染人数相对相似 ，仅发生在女性身上。在 P. chalcographus 中记录了三种病原体 ，分别是 Gregarina typographi，Mattesia cf .。 schwenkei 和 Chytridiopsis typographi 。在无 芒雀麦中观察到两种病原体，即 Gregarina typographi 和 Chytridiopsis typographi 。