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.

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.

Revision of South African chiggers (Acariformes: Trombiculidae) originated from the collection of R.F. Lawrence, with redescriptions of nine species.

A revision of the chigger mite collection in the KwaZulu-Natal Museum (NM, Pietermaritzburg, South Africa) resulted in finding holotypes or paratypes for 15 of the 51 species described by R.F. Lawrence in 1948-1951 and originally deposited in this museum.

New data on the genus Supella Shelford, 1911 (Dictyoptera: Pseudophyllodromiidae) with description of female of S. eocenica Anisyutkin et Perkovsky, 2023 from Rovno amber.

The paper provides a detailed morphological description of a previously unknown female of Supella eocenica Anisyutkin et Perkovsky, 2023. The structure of the tegmina and wings of the type species of the genus Supella, S. longipalpa (Fabricius, 1798), is also redescribed.

On species of Anisodactylus of the Russian Far East, with a description of a new species and the first record of A. tricuspidatus for Russia (Coleoptera: Carabidae: Harpalini).

A review of the ground beetle genus Anisodactylus Dejean, 1829 of the Russian Far East is given. The fauna of this region includes four species of two subgenera: A. (Pseudanisodactylus) signatus (Panzer, 1796), A.

Measuring ecological quality status in low-diversity Arctic intertidal foraminiferal assemblages using a diversity-based index.

EcoQS assessment of the marine intertidal zone based on its fauna is challenging because the assemblages have a low diversity and consist of stress tolerant species. The new approach we propose is to pool foraminiferal diversity (effective number of species exp(H')) across the whole intertidal zone including the salt marsh and tidal flat. In seven fjordheads studied in northern Fennoscandia, polycyclic aromatic hydrocarbon (PAH) concentrations indicated low levels of pollution (EcoQS Excellent to Moderate).

The role of cellular polyploidy in the regeneration of the cirrhotic liver in rats and humans.

Polyploidy is a condition in which a cell has multiple diploid sets of chromosomes. Two forms of polyploidy are known. One of them, generative polyploidy, is characteristic of all cells of the organism, while the other form develops only in some somatic tissues at certain stages of postnatal ontogenesis.

Traditional multilocus phylogeny fails to fully resolve Palearctic ground squirrels (Spermophilus) relationships but reveals a new species endemic to West Siberia.

Previous efforts to reconstruct evolutionary history of Palearctic ground squirrels within the genus Spermophilus have primarily relied on a single mitochondrial marker for phylogenetic data. In this study, we present the first phylogeny with comprehensive taxon sampling of Spermophilus via a conventional multilocus approach utilizing five mitochondrial and five nuclear markers. Through application of the multispecies coalescent model, we constructed a species tree revealing four distinct clades that diverged during the Late Miocene.

Ecological and phylogenetic aspects of the spring diet of three palaearctic species of swans.

The quality of swans' nutrition at spring migration stopovers is important for their successful breeding. It is of great interest to study the differences in nutrition of different swan species when sharing the same habitat. Microscopic analysis of Cygnus olor, C.

A new amber representative of the genus Ectobius Stephens, 1835 (Blattodea: Ectobiidae) from Storeblt (Denmark).

A new fossil cockroach, Ectobius danekrae sp. nov., is described on the basis of a single male adult individual from late Eocene Danish amber.

Karyotype diversity in the genus Dallas, 1852 (Hemiptera, Heteroptera, Lygaeidae) is much greater than you might think.

We studied the karyotype and chromosomal distribution of 18S rDNA clustered in nucleolar organizer regions (NORs) in (Kolenati, 1845), belonging to the subfamily Orsillinae (Lygaeidae). It is shown that this species has a karyotype with 2n = 22(18+mm+XY), previously known in only one of 24 studied species of the genus Dallas, 1852, characterized by a similar karyotype, 2n = 14(12+mm+XY). In , 18S loci are located on sex chromosomes, which is a previously unknown trait for this genus.

True Parthenogenesis and Female-Biased Sex Ratios in Cicadomorpha and Fulgoromorpha (Hemiptera, Auchenorrhyncha).

Insects are renowned for their remarkable diversity of reproductive modes. Among these, the largest non-holometabolous order, Hemiptera, stands out with one of the most diversified arrays of parthenogenesis modes observed among insects. Although there are extensive reviews on reproduction without fertilization in some hemipteran higher taxa, no such analysis has been conducted for the large suborders Fulgoromorpha (planthoppers) and Cicadomorpha (leafhoppers).

Correction: Ryss, A.Y.; Subbotin, S.A. New Records of Wood- and Bark-Inhabiting Nematodes from Woody Plants with a Description of sp. n. (Aphelenchoididae: Parasitaphelenchinae) from Russia. 2023, , 382.

In the original publication [...

The identity of Celonites montanus Mocsáry, 1906 (Hymenoptera: Vespidae: Masarinae) and its first record from Kazakhstan.

Celonites montanus Mocsáry, 1906, described from the Alai Range in Kyrgyzstan, is synonymized with C. kostylevi Panfilov, 1961, syn. nov.

A revision of the chigger genus Afrotrombicula (Acariformes: Trombiculidae).

The chigger genus Afrotrombicula Kolebinova and Vercammen-Grandjean, 1978 has been revised based on examination of museum specimens and reference data. Six species have been transferred to this genus from Neotrombicula Hirst, 1925 with the following new combinations: Afrotrombicula (Afrotrombicula) centrafricana (Goff, 1995), comb. nov.

Molecular and morphological evidence reveals hidden new taxa in (Bremer, 1861) (Lepidoptera, Hesperiidae, Hesperiinae) from China.

Two new species of Scudder, 1872, Zhu, Fan & Wang, and Zhu, Fan & Chiba, , are found in China and described, and (Butler, 1878) is restored. A lectotype is designated for Bremer, 1861, and a neotype is designated for Butler, 1878. Overall, the two new species are similar to (Bremer, 1861).

A new species of Melipriopsis Kirejtshuk, 2011 (Coleoptera: Nitidulidae: Meligethinae) from the Eocene Baltic amber.

Melipriopsis baltica sp. nov. is described and illustrated from the Eocene Baltic amber.

Expanding the Chromosomal Evolution Understanding of Lygaeioid True Bugs (Lygaeoidea, Pentatomomorpha, Heteroptera) by Classical and Molecular Cytogenetic Analysis.

The Lygaeoidea comprise about 4660 species in 790 genera and 16 families. Using standard chromosome staining and FISH with 18S rDNA and telomeric (TTAGG) probes, we studied male karyotypes and meiosis in 10 species of Lygaeoidea belonging to eight genera of the families Blissidae, Cymidae, Heterogastridae, Lygaeidae, and Rhyparochromidae. Chromosome numbers were shown to range from 12 to 28, with 2n = 14 being predominant.

A synopsis of the numbers of testicular follicles and ovarioles in true bugs (Heteroptera, Hemiptera) - sixty-five years of progress after J. Pendergrast's review.

The structure of testes and ovaries can be described in its simplest form by the number of follicles and ovarioles they contain. Sixty-five years after the last review of the internal reproductive systems in true bugs (Heteroptera), the data accumulated today on the number of testicular follicles and ovarioles in their gonads are summarized. In addition, data on the number and type (mesadenia/ectadenia) of accessory glands are given.

New Records of Wood- and Bark-Inhabiting Nematodes from Woody Plants with a Description of sp. n. (Aphelenchoididae: Parasitaphelenchinae) from Russia.

Wood- and bark-inhabiting parasitic nematodes are of great economic importance. Nematodes can cause wilt diseases in conifers and deciduous trees. In 2014-2022, during nematology surveys conducted in different regions of Russia and Belarus, adults and dauer juveniles of nematodes were collected from wood, bark and beetle vectors.

New species and records of chiggers (Acariformes: Trombiculidae) from birds of the Neotropics.

The study focuses on chigger mites parasitizing bird hosts in three countries of Latin America, Costa Rica, Paraguay, and Peru. In total, 785 chiggers collected from 145 birds of 67 species have been identified. Three new species have been described: Eutrombicula talamancensis sp.

Phylogenomics Supports the Monophyly of Aphelids and Fungi and Identifies New Molecular Synapomorphies.

The supergroup Holomycota, composed of Fungi and several related lineages of unicellular organisms (Nucleariida, Rozellida, Microsporidia, and Aphelida), represents one of the major branches in the phylogeny of eukaryotes. Nevertheless, except for the well-established position of Nucleariida as the first holomycotan branch to diverge, the relationships among the other lineages have so far remained unresolved largely owing to the lack of molecular data for some groups. This was notably the case aphelids, a poorly known group of endobiotic phagotrophic protists that feed on algae with cellulose walls.