scholarly journals Parasitic nematodes of Pool Frog (Pelophylax lessonae) in the Volga Basin

2019 ◽  
pp. 7314-7321
Author(s):  
Alexander Ruchin ◽  
Igor V. Chikhlyaev ◽  
Alexander I. Fayzulin
Keyword(s):  
Life Cycle ◽  
Host Range ◽  
Nematode Species ◽  
Systematic Position ◽  
Volga Basin ◽  
Parasitic Nematodes ◽  
The Past ◽  
First Time ◽  
Cosmocerca Ornata

Objetive. Present a modern review of the nematodes fauna of the pool frog Pelophylax lessonae (Camerano, 1882) from Volga basin populations on the basis of our own research and literature sources analysis. Materials and methods. Present work consolidates data from different helminthological works over the past 80 years, supported by our own research results. During the period from 1936 to 2016 different authors examined 1460 specimens of pool frog, using the method of full helminthological autopsy, from 13 regions of the Volga basin. Results. In total 9 nematodes species were recorded. Nematode Icosiella neglecta found for the first time in the studied host from the territory of Russia and Volga basin. Three species appeared to be more widespread: Oswaldocruzia filiformis, Cosmocerca ornata and Icosiella neglecta. For each helminth species the following information included: systematic position, areas of detection, localization, biology, list of definitive hosts, the level of host-specificity. Conclusions. Nematodes of pool frog, excluding I. neglecta, belong to the group of soil-transmitted helminthes (geohelminth) and parasitize in adult stages. Some species (O. filiformis, C. ornata, I. neglecta) are widespread in the host range. The latter two are able to reach high invasion indices and also to be the background parasites of the pool frog. It happens due to these nematode species life cycle specificity and the long-term connection of the amphibian with water.

scholarly journals An Overview of the Helminths of Moor Frog Rana arvalis Nilsson, 1842 (Amphibia: Anura) in the Volga Basin

Diversity ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 61
Author(s):  
Igor V. Chikhlyaev ◽  
Alexander B. Ruchin
Keyword(s):  
Systematic Position ◽  
Helminth Fauna ◽  
Helminth Species ◽  
Volga Basin ◽  
Rana Arvalis ◽  
Amphibian Species ◽  
Volga River ◽  
Spirometra Erinacei ◽  
First Time ◽  
Moor Frog

This is the first review of the helminth fauna of the moor frog Rana arvalis Nilsson, 1842 from the Volga river basin (Russia). The article summarizes the authors’ and literature data on the helminthic fauna of this species. The method of complete helminthological dissection was used. Thirthy-eight helminth species were recorded from three classes: Cestoda (1), Trematoda (28), and Chromadorea (9). Nine helminth species are new to the moor frog in Russia: trematodes Gorgodera varsoviensis Sinitzin, 1905, Strigea falconis Szidat, 1928, larvae, Neodiplostomum spathoides Dubois, 1937, larvae, Tylodelphys excavata (Rudolphi, 1803), larvae, Pharyngostomum cordatum (Diesing, 1850), larvae, Astiotrema monticelli Stossich, 1904, larvae and Encyclometra colubrimurorum (Rudolphi, 1819), larvae, nematodes Strongyloides spiralis Grabda-Kazubska, 1978 and Icosiella neglecta (Diesing, 1851). The cestode Spirometra erinacei (Rudolphi, 1918), larvae were observed of this amphibian species in the Volga basin for the first time. The nematodes Rhabdias bufonis, Oswaldocruzia filiformis, Cosmocerca ornata and the trematode Haplometra cylindracea form the core of the helminth fauna of the moor frog. Information on species of helminths includes systematic position, localization, areas of detection, type and scheme of life cycle, geographical distribution, and degree of specificity to host amphibians.

scholarly journals V. Bryusov’s Letters to His Fiancée

Literary Fact ◽  
2021 ◽  
pp. 8-30
Author(s):  
Monika V. Orlova
Keyword(s):  
Young People ◽  
Full Text ◽  
Terminally Ill ◽  
The Past ◽  
The Future ◽  
State Of Mind ◽  
First Time ◽  
The Village ◽  
The Relationship

The publication includes V.Ya. Bryusov’s letters to his fiancée I.M. Runt (1876 –1965) from June 9 to September 9, 1897. 11 correspondences, including the final telegram sent from Kursk, were written and sent from Aachen (Germany), Moscow and several Ukrainian localities. The letter 10 is accompanied by the full text of I.M. Runt’s only surviving letter to Bryusov, sent from Moscow to the village of Bolshye Sorochintsy and received by the poet a few months later at home. The relationship between the young people before the wedding were complicated. While the poet was preparing for the wedding in Moscow, he summed up the past contacts with “mes amantes”, and his state of mind was painful. Shortly before meeting his future wife, Bryusov broke up with the former governess of his family E.I. Pavlovskaya, who was terminally ill. A few days before the wedding he decided to go to say goodbye to Pavlovskaya to her homeland, Ukraine. In his letters to the future wife the poet tried to smooth out the tension of the situation, perhaps anticipating that he would be bounded with I.M. Runt 30 Литературный факт. 2021. № 2 (20) by a long-term relationship, where life and literature are closely interconnected. The letters are published for the first time.

scholarly journals First report, morphological and molecular characterization of Xiphinema elongatum and X. pachtaicum (Nematoda, Longidoridae) from Ethiopia

ZooKeys ◽  
2015 ◽  
Vol 489 ◽  
pp. 1-13 ◽  
Author(s):  
Gezahegne Damessa ◽  
Wim Bert ◽  
Frieda Decraemer
Keyword(s):  
18S Rdna ◽  
Agricultural Research ◽  
Nematode Species ◽  
Molecular Data ◽  
Geographical Information ◽  
Parasitic Nematodes ◽  
Root Tips ◽  
Complex Species ◽  
Morphometric Analyses ◽  
First Time

A total of six soil samples were collected around rhizosphere of citrus plants during 2010 from Melkassa Agricultural Research Center experimental station, Ethiopia. From these samples two most important ecto-plant parasitic nematodes of the genus Xiphinema were found and analysed. The genus Xiphinema is a large group of the phylum nematoda which constitutes more than 260 species. They are polyphagous root- ectoparasites of many crop plants and some species of this genus cause damage by direct feeding on root tips and transmit nepoviruses. The delimitation and discrimination of two species in the genus is presented, described herein as Xiphinemaelongatum and Xiphinemapachtaicum. Morphological and morphometric data were done using light microscopy and results of both species were fit within the previously described nematode species of Xiphinemaelongatum and Xiphinemapachtaicum. 18S rDNA were analysed using Bayesian inference (BI) method to reconstruct phylogenetic relationships of the studied Xiphinema sp. (KP407872Xiphinemaelongatum and KP407873Xiphinemapachtaicum) with other Xiphinema species. The 18S rDNA sequence of Xiphinemapachtaicum was alike to previously described species from the GenBank but Xiphinemaelongatum exhibited very small levels of nucleotides differences (0.4%) which might be possible intra-specific divergence. Though this region of rDNA has less resolution on complex species, its combination with morphological and morphometric analyses, suggests these species as Xiphinemaelongatum and Xiphinemapachtaicum with the GenBank accession number of KP407872 and KP407873, respectively. Short notes, morphological measurements, illustrations, and molecular data are given to these species. These species are reported for the first time from Ethiopia and it provides new geographical information of these organisms.

scholarly journals Five Species of Plant Parasitic Nematodes (Order: Tylenchidae) Affecting Vegetable Crops of Nepal

2016 ◽  
Vol 10 (1) ◽  
pp. 10-14
Author(s):  
Arvind K. Keshari ◽  
Ranjana Gupta
Keyword(s):  
Life Sciences ◽  
Nematode Species ◽  
Parasitic Nematodes ◽  
Kathmandu Valley ◽  
Vegetable Crops ◽  
Plant Parasitic Nematodes ◽  
Morphometric Data ◽  
First Time ◽  
Plant Parasitic

During a survey for plant parasitic nematodes affecting various vegetable crops grown in three hilly districts surrounding Kathmandu Valley, Nepal, five species of order Tylenchidae are reported for the first time from Nepal.The nematode species are Hoplolaimus indicus, Tylenchorhynchus mashhoodi, Helicotylenchus incisus, Microposthonia paraxestis and Hemicriconemoides cocophilus.All the species are illustrated with line diagrams and described with their morphometric data along with localities and host plants.International Journal of Life Sciences 10 (1) : 2016; 10-16

A systematic study of the Australian species of the genus Haemaphysalis Koch (Acarina: Ixodidae)

1963 ◽  
Vol 11 (1) ◽  
pp. 35 ◽  
Author(s):  
FHS Roberts
Keyword(s):  
New Species ◽  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Systematic Study ◽  
Northern Territory ◽  
Australian Species ◽  
First Time ◽  
Host List

A systematic study has been made of the species of Haemaphysalis occurring in Australia. Six species were recognized in the material examined, namely H. humerosa, H. ratti, H. bremneri, H. lagostrophi, H. bispinosa, and H. bancrofti. Two of these, H. lagostrophi and H. bremneri, are new species, and H. ratti is recorded from Australia for the first time. H. novaeguineae recorded by Nuttall and Warburton (1915) from Queensland and the Northern Territory was not seen. A detailed description with appropriate figures is given for the known stages in the life cycle of each species, together with data on host range and geographical distribution. Keys are presented for the males, females, and nymphs and a classified host list has been included.

scholarly journals Modern clinical and physiological bases of super microsurgery. The view of a physiologist and surgeons

2021 ◽  
Vol 24 (2) ◽  
pp. 48-56
Author(s):  
N. A. Bubnova ◽  
L. Ya. Kanina ◽  
N. P. Erofeev ◽  
R. P. Borisova
Keyword(s):  
Lower Extremities ◽  
Pharmacological Agents ◽  
Critical Studies ◽  
The Past ◽  
Vasoactive Substances ◽  
Biopsy Specimens ◽  
Medical Institutions ◽  
Functional Mechanisms ◽  
First Time

This paper is a retrospective analysis of the long-term work of a large group of Russian scientists representing various Medical Institutions of St. Petersburg (in the past years of Leningrad) in the period from the 70s of the XX century to the present in the field of theoretical clinical lymphology. We aimed to discuss critical studies of a group of anatomists, in the sphere of the structure of lymphangions and lymph nodes in health and lymphedema of the lower extremities in humans. Experimental data of physiologists are presented, which made it possible for the first time to substantiate the functional mechanisms of active lymph transport in health and in lymphedema of the lower extremities. In addition, there are some results of testing biopsy specimens with various pharmacological agents and vasoactive substances. At last, there is an example of the clinical use of theoretical knowledge in the tactics of choice and expediency of surgical treatment of lymph drainage disorders in patients is given.

scholarly journals Composition of the intestinal nematofauna of Anurogryllus muticus and Neocurtilla claraziana (Orthoptera) from pastures of La Plata city, Buenos Aires, Argentina

Caldasia ◽  
2020 ◽  
Vol 43 (1) ◽  
pp. 205-207
Author(s):  
José Matías Rusconi ◽  
María Fernanda Achinelly
Keyword(s):  
Buenos Aires ◽  
Entomopathogenic Nematode ◽  
Nematode Species ◽  
Parasitic Nematodes ◽  
La Plata ◽  
First Time ◽  
Prevalent Species ◽  
La Plata City ◽  
Orthopteran Species

The present study analyzes the intestinal nematofauna of the orthopteran species Anurogryllus muticus and Neocurtilla claraziana as part of a survey work conducted in pastures from the region of La Plata to isolate entomopathogenic nematode species. Eleven nematode species belonging to the families Thelastomatidae, Travassosinematidae, Cephalobidae, Rhabditidae, and Plectidae are reported. Parasitism percentages from 0.31 to 22.71 % were observed being Blatticola cristovata and Cephalobellus magalhaesi the most prevalent species. Cephalobium nitidum, Cruznema tripartitum, and Plectus parietinus are reported for the first time from Argentina. The findings of the study contribute to a better understanding of the biodiversity status of insect parasitic nematodes of the region.

scholarly journals Short communication: An overview of the trematodes fauna of pool frog Pelophylax lessonae (Camerano, 1882) in the Volga Basin, Russia: 2. Larval stages

2019 ◽  
Vol 11 (1) ◽  
pp. 106-111
Author(s):  
IGOR V CHIKHLYAEV ◽  
ALEXANDER B RUCHIN ◽  
ALEXANDER I FAYZULIN
Keyword(s):  
Host Specificity ◽  
Geographic Distribution ◽  
Larval Stage ◽  
Short Communication ◽  
Volga Basin ◽  
Larval Stages ◽  
The Past ◽  
Stage Of Development ◽  
The Given ◽  
First Time

Abstract. Chikhlyaev IV, Ruchin AB, Fayzulin AI. 2019. Short communication: An overview of the trematodes fauna of the pool frog Pelophylax lessonae (Camerano, 1882) in the Volga Basin, Russia: 2. Larval stages. Nusantara Bioscience 11: 106-111. This paper presents data on the trematodes fauna of the pool frog Pelophylax lessonae (Camerano, 1882) from 13 regions of the Volga Basin. It consolidates data from different authors over the past 30 years, supplemented by our own research results. There are authentically known findings of 10 trematodes species at the larval stage of development. The species Codonocephalus urniger (Rudolphi, 1819), mtc., Neodiplostomum spathoides Dubois, 1937, mtc. and Pharyngostomum cordatum (Diesing, 1850), mtc. have been observed for the first time in the given host on the territory of Russia and Volga basin. For each species of trematodes, there is the following information is included: taxonomic position, localization, area of detection, biology, definitive hosts, geographic distribution and degree of host-specificity.

Integrated nematode management of Ditylenchus dipsaci in onion: a nematode in a world all on its own.

2021 ◽  
pp. 297-303
Author(s):  
Pella Brinkman ◽  
Misghina Goitom Teklu
Keyword(s):  
Life Cycle ◽  
Host Range ◽  
Integrated Management ◽  
Nematode Species ◽  
Future Research ◽  
Multiplication Rate ◽  
Plant Parts ◽  
Planting Material ◽  
Ditylenchus Dipsaci ◽  
Management Optimization

Abstract Stem and bulb nematode, Ditylenchus dipsaci, is one of the few plant parasitic nematode species infesting above-ground plant parts. It can be transmitted through infested planting material and seed, survive longer periods in the soil, has a broad host range and a relatively short life cycle and high multiplication rate. Further, it is able to cause substantial post-harvest losses in stored onions, making it a difficult nematode to manage. This chapter discusses the economic importance, geographical distribution, host range, damage symptoms, biology and life cycle, interactions with other nematodes and pathogens, recommended integrated management, and management optimization of D. dipsaci. Future research requirements and future developments are also mentioned.

scholarly journals Morphometrical and molecular data on plant parasitic nematodes Longidorus attenuatus Hooper, 1961 and L. danuvii Barsi et al., 2007 (Nematoda: Longidoridae) reported from Ukraine for the first time

2016 ◽  
Vol 53 (4) ◽  
pp. 396-400 ◽  
Author(s):  
S. Susulovska ◽  
A. Susulovsky ◽  
F.W. Kornobis
Keyword(s):  
Plant Root ◽  
Nematode Species ◽  
Molecular Data ◽  
Rubus Idaeus ◽  
28S Rdna ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Dry Conditions ◽  
28S Rdna Sequence ◽  
First Time

Summary Genus Longidorus Micoletzky, 1927 consists of obligatory plant root ectoparasites. Some of the genus species are of economic importance as pests of agricultural plants. This paper presents first records of Longidorus attenuatus Hooper, 1961 and L. danuvii Barsi et al., 2007 from Ukraine. Data on morphometrics and D2-D3 28S rDNA region sequence are provided. Additionally, a D2-D3 28S rDNA sequence from a population described previously from Poland was included. For the first time L. danuvii has been found with plants of agricultural importance (Malus domestica Borkh., Pyrus sp. and Rubus idaeus L.). Additionally, this nematode species has been found for the first time in localities with relatively dry conditions (on the tops of the hills), which are distant from banks of rivers – biotopes from which it has been recorded previously.

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