Abstract
The importance of pathogens in the population dynamics of Ips typographus remains a subject of ongoing debate. The main objective of our experiment was to compare the pathogen infection levels of individuals overwintering in bark with the levels of individuals from the same population captured with pheromone traps and thereby to determine primary answers as to whether it can be confirmed that pathogenic organisms affect the flight ability of bark beetles or their ability to leave their places of overwintering. A total of 402 I. typographus individuals were analyzed at a study location under limited management. Three pathogens were confirmed to be present: the gregarine Gregarina typographi, the virus ItEPV, and the microsporidium Nosema typographi. Infection levels of Gregarina typographi and ItEPV were the same in beetles collected at places of overwintering and in those beetles collected in pheromone traps within the immediate vicinity. As these pathogens infect the host’s intestine, the tendency to leave the places of overwintering is apparently not diminished. A similar analysis and comparison of pathogens located in the fat body might bring different results, as our study only detected N. typographi in a single dissected adult spruce bark beetle.
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© W. Stefański Institute of Parasitology, PAS
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- Redescription and phylogenetic relationships of the rare Lyperosomum sarothrurae Baer, 1959 (Digenea: Dicrocoeliidae)
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- A new Cosmocercoides species (Nematoda: Cosmocercidae), C. tonkinensis n. sp., in the scale-bellied tree lizard (Acanthosaura lepidogaster) from Vietnam
- Ophthalmology hospital wards contamination to pathogenic free living Amoebae in Iran
- Eye fluke infection status in Baltic cod, Gadus morhua, after three decades and their use as ecological indicators
- Aplectana dubrajpuri sp. nov. (Nematoda: Cosmocercidae) in Hoplobatrachus tigerinus (Anura: Dicroglossidae) from Dubrajpur, Birbhum, West Bengal, India
- Trypanosoma cruzi DTU TcII presents higher blood parasitism than DTU TcI in an experimental model of mixed infection
- Molecular phylogeny and ultrastructure of Myxobolus cf. cuneus, a parasite of patinga hybrid and Henneguya pseudoplatystoma, a parasite of pintado hybrid
- Supplementary data of Henneguya leporinicola (Myxozoa, Myxosporea) a parasite of Leporinus macrocephalus from fish farms in the state of São Paulo, Brazil
- Prevalence and genotype of Giardia duodenalis in dairy cattle from Northern and Northeastern part of Thailand
- Comparison of pathogens infection level in Ips typographus (Coleoptera: Curculionidae) beetles sampled in pheromone traps and at place of overwintering
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- Metazoan parasite infracommunities of Mycteroperca bonaci (Poey, 1960) (Pisces: Epinephelidae) in reef and coastal environments off the coast of Yucatán, México
- Dirofilariasis – an emergent human parasitosis in Romania
- Two new picobiin mite species (Acari: Cheyletoidea: Syringophilidae) parasitizing passerine birds in Guyana
- New species of Prosotocus (Digenea; Pleurogenidae) and other helminths in Euphlyctis cyanophlyctis (Anura: Dicroglossidae) from Punjab, India
- Chimeric DNA vaccines encoding Eimeria acervulina macrophage migration inhibitory factor (E.MIF) induce partial protection against experimental Eimeria infection
- Variations in cercarial production and the level of in vitro activation of metacercariae of two different isolates of Fasciola hepatica
- Effect of body size on the abundance of ectoparasitic mites on the wild rodent Oligoryzomys nigripes
- Evaluation of reactivity to Echinococcus spp. among rural inhabitants in Poland
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- Liver fluke (Fasciola hepatica) naturally infecting introduced European brown hare (Lepus europaeus) in northern Patagonia: phenotype, prevalence and potential risk
- Molecular characterization of Fascioloides magna (Trematoda: Fasciolidae) from south-western Poland based on mitochondrial markers
- Fatal Paratanaisia bragai (Digenea: Eucotylidae) infection in scarlet macaws (Ara macao) in Costa Rica
- First Molecular Characterization of Aspiculuris tetraptera (Nematoda: Heteroxynematidae) from Mus musculus (Rodentia: Muridae) in India
- Molecular characterization of muscle-parasitizing didymozoid from a chub mackerel, Scomber japonicus
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