Издательство: "Folium Publishing Company"
| Название: | A mollusk Planorbarius corneus is an intermediate host of the infectious agent of rostand’s “anomaly p” in green frogs | 
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| Автор ПГУ: | Ермаков Олег Александрович  Антон Олегович Спартак Николаевич Иванов Александр Юрьевич | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | Here we present the first new data about the mysterious "anomaly P" of green frogs (genus Pelophylax) in about 50 years. We established that the gastropod Planorbarius corneus could be an intermediate host (or vector) of the infectious agent of the anomaly P. Symmetrical cases of polydactyly, the anomaly "cross" and heavy cases of the anomaly P, which were previously found in natural populations in the European part of Russia and recently obtained in laboratory, can be caused by this infectious agent. As the most probable cause, we assume a species of trematodes, for which the first intermediate host is P. corneus, from which they infest tadpoles of green frogs. | |
| Дата издания: | 2019 | |
| Дата загрузки: | 02.12.2020 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | A new species of acanthosaura gray, 1831 (Squamata: Agamidae) from central highlands, Vietnam | 
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| Автор ПГУ: | Ермаков Олег Александрович Луконина Светлана Александровна | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | Herein, we describe a new agamid species of the genus Acanthosaura from Central Highlands of Vietnam: Gia Lai Province, Kon Chu Rang NR, and Kon Tum Province: Kon Plong and Ngoc Linh Mountain based on morphological and molecular data. Acanthosaura prasina sp. nov. is distinguished from all congeners by a combination of the following morphological characters. Acanthosaura prasina sp. nov. differs from A. capra, A. murphyi, and A. nataliae by the presence of a short spine on each side of the neck and a smaller body size. From the known species of "lepidogaster" complex and A. coronata it differs in the arrangement of dorsal crests with a distinct double row of vertebral scales, from A. brachypoda in a smaller body size, longer tail and limbs, fewer supra- and infralabials and coloration patterns with a white area on lips and shoulders; from A. lepidogaster by lacking a dark marking on the nape and the absence of a distinct diastema; from A. phongdienensis by lacking a dark marking on the nape. We provide a cyt b-based estimation of diversity of the genus Acanthosaura. A. prasina sp. nov. differs from A. phongdiensis, A. coronata, A. lepidogaster, A. armata, A. crucigera, A. nataliae, A. phuketensis, and Acanthosaura sp. SK in p-distances of 15.4, 24.5, 14.7, 14.6, 16.3, 14.6, 15.4, and 24.4%, respectively. The new species currently known from three localities from Central Highlands was recorded from 800 to 1700 m a.s.l. in the evergreen polydominant forests in the mountainous regions of Gia Lai and Kon Tum provinces. This is the 16th species of Acanthosaura and the ninth species of the genus from Vietnam. | |
| Дата издания: | 2020 | |
| Дата загрузки: | 23.11.2020 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | Integrative taxonomy reveals a new cryptic species of Xenopeltis Gray, 1831 (Ophidia: Macrostomata: Pythonoidea: Xenopeltidae) from Central Highlands, Vietnam | 
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| Автор ПГУ: | Ермаков Олег Александрович | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | Herein, we describe a new cryptic snake species of the genus Xenopeltis from Central Highlands of Vietnam: Kon Plông District, Kon Tum Province based both on morphological and molecular data. Xenopeltis intermedius sp. nov. is distinguished from the two known species by a combination of the following morphological characters. Xenopeltis intermedius sp. nov. differs from X. unicolor and X. hainanensis by the number of ventrals and subcau-dals. The skull is less elongated than in X. unicolor and somewhat more elongate than in X. hainanensis. X. inter-medius demonstrates differences in size, shape proportions and relief of the parietal bone and the number of teeth from X. hainanensis and X. unicolor. We provide a COI-based estimation of diversity of the genus Xenopeltis. Genetic divergence (p-distance) between Xenopeltis sp. nov. from Kon Tum Province, Central Highlands region of Vietnam, and two other congeners was 5.7% (for X. hainanensis) and 12.9% (for X. unicolor). The new species is currently known only from one locality from Central Highland and was recorded from 1500 to 2500 m a.s.l. in the evergreen polydominant forests in the mountainous regions of Kon Tum Province. This is the third species of Xenopeltis from Vietnam. © 2022 Folium Publishing Company. | |
| Дата издания: | 2022 | |
| Дата загрузки: | 09.11.2022 | |
| Название: | New multiplex pcr method for identification of East European green frog species and their hybrids | 
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| Автор ПГУ: | Ермаков Олег Александрович Титов Сергей Витальевич Спартак Николаевич Антон Олегович Иванов Александр Юрьевич | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | A molecular multiplex PCR method for identification of East European green frog species (Pelophylax ridibundus, P. cf. bedriagae and P. lessonae) and their hybrids was developed. This simple and rapid method can be used for identification of species-specific mitochondrial and nuclear DNA. The method is based on species-specific differences in primary structure of the subunit 1 of the mitochondrial cytochrome C oxidase gene (COI) and the intron-1 of the nuclear serum albumin gene (SAI-1). Based on the method, we analyzed numerous individuals of these species and their hybrids from East European Plain, the Crimea, the Caucasus, the Ural, as well as introduced populations from Western Siberia and the Kamchatka. In all cases, identification of species performed by use of the multiplex PCR method coincided with results of study of primary nucleotide sequences. | |
| Дата издания: | 2019 | |
| Дата загрузки: | 02.12.2020 | |
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ИР получен из базы данных "Scopus" автоматически
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