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Centipede (Chilopoda) richness and diversity in the Bug River valley (Eastern Poland).

ABSTRACT: The main aim of the survey was to describe the diversity and richness of Chilopoda in the selected area of the Bug River valley. The study sites were located in two regions differing in the shape of the valley, the presence of thermophilous habitats and the size of riparian forests. Pitfall traps were used as a sampling method. As a result, 444 specimens belonging to 12 centipede species of two orders - Geophilomorpha (four species) and Lithobiomorpha (eight species) were caught. Lithobius (Monotarsobius) curtipes C.L.Koch, 1847, Pachymeriumferrugineum (C.L.Koch, 1835), Lamyctes (Lamyctes) emarginatus (Newport, 1844) and Lithobius (Monotarsobius) dudichi Loksa, 1947 were the most common and the most numerous species. Of particular note is Lithobiusdudichi found in Poland for the first time and previously known based on a single specimen. Two to 10 Chilopoda species were found in each habitat under investigation. The greatest species richness was found in thermophilous thickets (10 species), sandy grasslands (eight), xerothermic grasslands (eight) and mesic meadows (six). The fewest number of species (two) was found in rushes at oxbows and in wet meadows. We found differences in the species composition and the number of Chilopoda between the lower (102 specimens, six species) and the middle (324 specimens, 11 species) section of the river valley. Our results confirm the need to protect xerothermic habitats, unique almost throughout entire Central Europe, which due to their distribution and their small area covered are fairly easily subject to the process of destruction.

SUBMITTER: Lesniewska M

PROVIDER: S-EPMC4523769 | biostudies-other | 2015

REPOSITORIES: biostudies-other

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Project description:A total of 853 questing Ixodes ricinus males, females, and nymphs and of 582 questing Dermacentor reticulatus males and females were collected from vegetation on the territory of the Lublin province (eastern Poland). The ticks were examined for the presence of Babesia by PCR detecting part of 18S ribosomal RNA (rRNA) gene and nuclear small subunit rRNA (SS-rDNA) for determining of Babesia spp. and Babesia microti, respectively. The overall incidence of Babesia strains in I. ricinus ticks was 4.6%. Three species of Babesia were identified. The prevalent species was B. microti which occurred in 2.8% of ticks, while Babesia venatorum, Babesia divergens, and unidentified Babesia species were found at the frequency of 1.2, 0.2, and 0.3%, respectively. Altogether, B. microti constituted 61.5% of the total strains detected in I. ricinus, B. venatorum-25.7%, B. divergens-5.1%, and unidentified Babesia species-7.7%. The prevalence of Babesia species in I. ricinus did not depend significantly on locality (χ(2) = 1.885, P = 0.390) nor on the tick stage (χ(2) = 4.874, P = 0.087). The incidence of Babesia strains in D. reticulatus ticks was 2.7%. Two species of Babesia were identified. Again, the prevalent species was B. microti which occurred in 2.1% of ticks, while B. canis was found in 0.7% of ticks. In one D. reticulatus female, B. canis and B. microti co-infection was found. Altogether, B. microti constituted 75% of the total strains detected in D. reticulatus while B. canis formed 25% of the total strains. The frequency of the occurrence of Babesia species in D. reticulatus did not depend significantly on locality (χ(2) = 0.463, P = 0.793). The difference between the prevalence of Babesia in males and females of D. reticulatus was insignificant (P = 0.0954); nymphs were not found. The dominance of B. microti in the species composition of tick-borne Babesia found in this study was typical for eastern Europe. In conclusion, the results revealed that the population inhabiting the forested area of eastern Poland could be exposed to Babesia parasites, especially to those from the species B. microti, by a bite of I. ricinus, a competent vector of human babesiosis, and probably also by a bite of D. reticulatus whose role in the transmission of human babesiosis needs to be clarified.

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Centipede (Chilopoda) richness and diversity in the Bug River valley (Eastern Poland).

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