New nucleolin-containing cytoplasmic bodies in an archamoebian protist Pelomyxa belevskii (Amoebozoa, Archamoebae, Pelobiontida).

The representatives of the archamoebian genus Pelomyxa are amoeboid anaerobic protists that inhabit fresh-water anoxic sediments, and most of them are usually multinucleate. The cytoplasm of these unicellular organisms is highly complicated and contains numerous vacuoles of different types, as well as a wide range of prokaryotic endocytobionts, agglomerations of glycogen, lipids, etc. Among the great variety of cytoplasmic structures in P.

Complex species structure of (Digenea: Lecithasteridae), a fish parasite in the Arctic and Pacific Northwest.

Studying complexes of cryptic or pseudocryptic species opens new horizons for the understanding of speciation processes, an important yet vague issue for the digeneans. We investigated a hemiuroidean trematode across a wide geographic range including the northern European seas (White, Barents, and Pechora), East Siberian Sea, and the Pacific Northwest (Sea of Okhotsk and Sea of Japan). The goals were to explore the genetic diversity within through mitochondrial ( and genes) and ribosomal (ITS1, ITS2, 28S rDNA) marker sequences, to study morphometry of maritae, and to revise the life cycle data.

Wood-Inhabiting Nematode, sp. n. (Nematoda: Aphelenchoididae) from David Elm, with Molecular Phylogeny of the Genus Based on Partial Mitochondrial Genomes.

A new nematode species, sp. n. is described in the bark beetle-elm tree association ( and var.

First record of the genus Tshernyshev, 2009 (Coleoptera, Malachiidae) from China.

Background: Tshernyshev, 2009 is a small genus belonging to the tribe Malachiini in the family Malachiidae of the order Coleoptera, with six currently known species: (Erichson, 1840) from Central, Eastern and Southern Europe and North Africa; (Abeille de Perrin, 1885) from Central Europe to Central Asia; Ezzatpanah, 2011 from Iran; (Tshernyshev, 2000) from Uzbekistan and Kyrgyzstan; (Medvedev, 1964) from Kazakstan, Russia and Mongolia; (Medvedev, 1964) from Kazakhstan and Turkey.

New Information: In this study, Tshernyshev, 2009 is newly recorded from China upon the discovery of (Medvedev, 1964) from Xinjiang Autonomous Region. The adult morphological characters are re-described in detail with illustrations of external appearance and relevant characters.

Speciation and historical invasions of the Asian black-spined toad (Duttaphrynus melanostictus).

Animal translocations provide striking examples of the human footprint on biodiversity. Combining continental-wide genomic and DNA-barcoding analyses, we reconstructed the historical biogeography of the Asian black-spined toad (Duttaphrynus melanostictus), a toxic commensal amphibian that currently threatens two biodiversity hotspots through biological invasions (Wallacea and Madagascar). The results emphasize a complex diversification shaped by speciation and mitochondrial introgression that comprises two distinct species.

Mercury in Fur of Bats in Middle Taiga of the European Part of Russia at Low Anthropogenic Exposure.

Mercury is considered to be one of the chemical elements posing the greatest threats to the health of most animals and can be transferred from aquatic ecosystems to terrestrial food webs. Many bat species forage above water, and their food sources include aquatic and amphibious organisms. Bats are very sensitive to the slightest changes in the environment.

Dynamics of spp. Biomass and Environmental Variability: A Case Study in the Neva Estuary (The Easternmost Baltic Sea).

Predicting which non-indigenous species (NISs) will establish persistent invasive populations and cause significant ecosystem changes remains an important environmental challenge. We analyzed the spatial and temporal dynamics of the entire zoobenthos and the biomass of spp., one of the most successful invaders in the Baltic Sea, in the Neva estuary in 2014-2023.

A Newly Dated Late Pleistocene and Holocene Archaeological Assemblage from Bukhtarma Cave in the Southern Altai Piedmont, East Kazakhstan.

The Altai mountains contain a number of cave and rockshelter sites that have given crucial information about human evolution in Asia. Most of these caves are located in the Gornyi Altai of Siberia, while the southern flank of the range remains much less known. Bukhtarma Cave was a karstic cave located near the former village of Peshchera, on the banks of the Bukhtarma River running through the foothills of the southern (Kazakh) Altai mountains.

In search of pathogenic Leptospira species in Myotis and other vesper bats, Russia.

Various bat species worldwide have been identified as Leptospira carriers, especially in tropical regions. In this study, we investigated the infection of Vespertilionidae bats by pathogenic Leptospira in north-west Russia. Out of 264 bats from 13 species, the urine of 24 specimens tested positive according to a polymerase chain reaction test.

A novel strain of Leishmania braziliensis harbors not a toti- but a bunyavirus.

Leishmania is a genus of the family Trypanosomatidae that unites obligatory parasitic flagellates causing a variety of vector-borne diseases collectively called leishmaniasis. The symptoms range from relatively innocuous skin lesions to complete failures of visceral organs. The disease is exacerbated if a parasite harbors Leishmania RNA viruses (LRVs) of the family Pseudototiviridae.

Gallophilous theory of cyclical parthenogenesis in aphids (Homoptera, Aphidinea).

The paper elaborates theoretical basis of the origin of aphid cyclical parthenogenesis in view of the original life of these insects in strobiloid galls on spp. The period of gall opening is greatly extended in time, which prevents normal panmixia and creates a selective advantage for parthenogenetic reproduction. Migration of aphids to secondary host plants, on which closed galls never form, parthenogenetic reproduction on these plants, and the subsequent simultaneous return of "remigrants" to the main host plant make it possible to synchronize the development of the bisexual generation and achieve mass panmixia at the end of the life cycle only; it coincides with the end of summer growth shoots or the autumn end of the vegetation period as a whole.

Description of a new species of Speiser , 1905 (Diptera: Hippoboscidae) from Southern Vietnam with the updated key to the subgenus .

The family Hippoboscidae, commonly known as "louse flies," comprises pupiparous Diptera that are ectoparasites of birds and mammals, with significant impacts on their hosts and epidemiological importance. The louse fly fauna of Vietnam is relatively understudied compared to other countries in the Southeast Asia region. In this study, we describe a new species of the genus Speiser, 1905 (Diptera: Hippoboscidae), , collected from the lesser coucal (Gmelin, JF, 1788) in Cat Tien National Park, Vietnam.

The nature of 'jaws': a new predatory representative of Provora and the ultrastructure of nibbling protists.

The recently discovered Provora supergroup has primarily been examined to determine their phylogenomic position in the eukaryotic tree. Their morphology is more poorly studied, and here we focus on their cellular organization and how it compares with that of other supergroups. These small eukaryovorous flagellates exhibit several ultrastructural features that are also found in a subset of taxa from a wide variety of deep-branching lineages (Stramenopiles, Alveolata, Hemimastigophora, Malawimonadidae, Discoba and Metamonada), including vesicles beneath the plasmalemma, two opposing vanes on the flagella, a ventral feeding groove and a fibrillar system resembling the excavate type.

The Sixth Mass Extinction and Amphibian Species Sustainability Through Reproduction and Advanced Biotechnologies, Biobanking of Germplasm and Somatic Cells, and Conservation Breeding Programs (RBCs).

Primary themes in intergenerational justice are a healthy environment, the perpetuation of Earth's biodiversity, and the sustainable management of the biosphere. However, the current rate of species declines globally, ecosystem collapses driven by accelerating and catastrophic global heating, and a plethora of other threats preclude the ability of habitat protection alone to prevent a cascade of amphibian and other species mass extinctions. Reproduction and advanced biotechnologies, biobanking of germplasm and somatic cells, and conservation breeding programs (RBCs) offer a transformative change in biodiversity management.

Analysis of Leishbuviridae from Trypanosomatids.

Over the last decade, considerable progress has been made in unraveling RNA virus diversity. This has contributed to our understanding of the evolution of these viruses, which include emerging zoonotic human pathogens. Current success has been greatly facilitated by the development of next-generation sequencing platforms instrumental for meta-transcriptomic studies.

Number and location of rDNA clusters in the superfamilies Tenthredinoidea and Cynipoidea (Hymenoptera): an update.

To identify nucleolus organizing regions (NORs), fluorescence hybridization (FISH) with 18S rDNA probe was performed on chromosomes of Linnaeus, 1758 (Tenthredinidae), (Linnaeus, 1767) (Argidae) (n = 10 in both) and (Bouché, 1834) (Cynipidae) (2n = 20). In all these species, a single pericentromeric rDNA cluster per haploid karyotype was detected. This number of NORs is confirmed as ancestral for the order Hymenoptera.

Variation of functional diversity structure measured as combined species dominance, functional diversity, and functional redundancy in two taxa of ectoparasitic arthropods at two spatial scales: host-associated, ecological, and geographic effects.

The functional diversity structure of a community can be represented as a combination of three additive components (species dominance D, functional redundancy R, and functional diversity Q) (DRQ approach in which different facets of functional differences between species are considered simultaneously). We applied this concept to assemblages of fleas and gamasid mites parasitic on small mammals at continental (across regions of the Palearctic) and regional (across sampling sites in Slovakia) scales and asked: What are the relative effects of host species, biome/habitat type, and geographic locality on the DRQ composition of a parasite assemblage? At the continental scale, regions were partitioned according to predominant biome or geographic position in a continental section. At the regional scale, sampling sites were partitioned according to habitat type or geographic locality.

Ancient evolutionary origins of hepatitis E virus in rodents.

Hepatitis E virus (HEV; family ) infections cause >40,000 human deaths annually. Zoonotic infections predominantly originate from ungulates and occasionally from rats, highlighting the zoonotic potential of rodent-associated hepeviruses. We conducted host genomic data mining and uncovered two genetically divergent rodent-associated hepeviruses, and two bat-associated hepeviruses genetically related to known bat-associated strains.

Transovarial and transstadial transmission of Borrelia valaisiana, the pathogen of Lyme borreliosis, in the sheep tick, Ixodes ricinus L.

In this study, molecular analysis was used to show the possibility of transovarial and transstadial transmission of Borrelia valaisiana in Ixodes ricinus ticks in the natural biotopes of North-Western Russia. Female ticks collected in nature were fed on rabbits; larvae obtained from these females were fed on white mice. Eggs, female ticks after the egg deposition, larvae and nymphs of ticks after overwintering were studied for Borrelia burgdorferi s.

Review of the genus Chirodisca Emeljanov, 1996 (Hemiptera: Fulgoroidea: Caliscelidae).

The caliscelid genus, Chirodisca Emeljanov, 1996 (Caliscelinae, Caliscelini), is reviewed. Adults and 5th instar nymph of Chirodisca astyages (Dlabola, 1982) and adults of Ch. eximia (Stål, 1859) are described and illustrated on the basis of type specimens and other material examined.

Taxonomy and bioacoustics of some crickets (Orthoptera: Grylloidea) from Panti Forest Reserve (Peninsular Malaysia: Johor).

Orthopteran surveys were recently conducted at the Panti Forest Reserve in Johor State of Peninsular Malaysia. Based on new material, three species new to science are described here: Agryllus sori Tan, Muhammad & Gorochov, sp. nov.

New species and records of the Rhamphomyia subgenus Holoclera (Diptera, Empididae) from the Palaearctic Region.

New data on the Palaearctic subgenus Holoclera Schiner of dance flies of the genus Rhamphomyia Meigen (Diptera: Empididae) are reported. Three new species are described: Rhamphomyia (Holoclera) richterae sp. nov.