Издательство: "Fund for Support and Development of Protected Areas"
| Название: | Granulomatous inflammations in the intestine of pelophylax ridibundus (Anura: Ranidae) caused by brandesia turgida (plathelminthes: Digenea) | 
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| Автор ПГУ: | Ермаков Олег Александрович  Антон Олегович | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | The report provides data on granulomatous inflammation in the small intestine of Pelophylax ridibundus, observed in exophytic outgrowths (diverticulums) of duodenum and caused by Brandesia turgida. Amphibians were collected from Protected Areas (Privolzhskaya Lesostep’ State Nature Reserve, Penza region, and Sosnovaya Roscha Forest Park near the town Yoshkar-Ola) during the field seasons of 2011–2018. An histological examination was made according to standard histological procedures; we used hematoxylin and eosin stain. The trematode Brandesia turgida was found not only in the Lieberkühn glands, but also in the serosa. Noncaseating epithelioid granulomas were localised in the serosa. Macrophages and single multinuclear PirogovLanghans giant cells were also detected in the serosa. Granular decay, puckering of nuclei and nuclear detritus were detected. Marked leukocyte infiltration with a significant predominance of eosinophils was observed. The periphery of such granulomas can be characterised by a lymphohistiocytic profile. Mycobacterial infection was not detected. The obtained data describe a new case of granulomatous inflammation in amphibians. | |
| Дата издания: | 2020 | |
| Дата загрузки: | 25.10.2020 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | On the taxonomic status of species from the group «myotis nattereri» (Chiroptera, vespertilionidae) in the Eastern Caucasus | 
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| Автор ПГУ: | Смирнов Дмитрий Григорьевич Титов Сергей Витальевич | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | In Russia, Myotis nattereri was considered as a monotypic species, of which its range is divided into two parts.. One of them is the northern fragment consisting of Central Russia and the Urals, while the southern part of its range includes the Caucasus and Crimea. On the basis of morphological and molecular-genetic data, the taxonomic status of its Caucasian forms is discussed. In the Eastern Caucasus (Republic of Dagestan, Russia), we caught Myotis animals related to the group of «Myotis nattereri» species, similar to specimens of the West Asian Myotis cf. tschuliensis on the basis of skull size measurements. A comparison analysis showed that, outwardly, M. cf. tschuliensis 2 individuals are highly similar to specimens from Central Russia. However, these animals have some differences in the ear structure, os penis, attachment of the posterior edge of the wing membrane to the foot, and in the ratio of cilia lengths to bristles on the free edge of the tail membrane. The more reliable differences between M. cf. tschuliensis 2 animals and M. nattereri s.str. specimens were revealed on the basis of craniometric studies, but the complete confirmation of the species’ independence of Caucasian specimens was obtained using the analysis of mtDNA sequences. According to phylogenetic constructions, Dagestan specimens designated by us as M. cf. tschuliensis 2, formed a well separated sister line in relation to the clade of Caucasian forms: M. schaubi and M. cf. tschuliensis 1 (p-distance: 7.4–7.0%). There are no reliable morphological differences between M. cf. tschuliensis 2 and M. cf. tschuliensis 1. Prior to genetic studies of M. tschuliensis specimens, we suggest using an open nomenclature for the East Caucasian form. If specimens designated as M. cf. tschuliensis 1, originated from the Near East, are genetically identical to the M. cf. tschuliensis specimens from its type location in Turkmenistan, then Dagestan bats designated as M. cf. tschuliensis 2 should be considered as a new, undescribed species. | |
| Дата издания: | 2020 | |
| Дата загрузки: | 21.11.2020 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | Структура сообщества эктопаразитов рукокрылых рода Nyctalus (Chiroptera: Vespertilionidae) Жигулевского государственного заповедника и национального парка «Самарская Лука» (Европейская Россия) | 
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| Автор ПГУ: | Смирнов Дмитрий Григорьевич | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Дата издания: | 2024 | |
| Дата загрузки: | 23.10.2024 | |