Toderas Ion

Institute of Zoology · Center

The paper aimed to investigate the influence of UV radiation on the conidia germination and vegetative growth of the fungal strains Beauveria bassiana CNMN-FE-01 and Cordyceps fumosorosea CNMN-FE-02, potential biological control agents of weevils. It was established that UV-B radiation (λ = 312 nm) significantly reduces the viability of conidia, th...

Epidemiological knowledge on pathogens in ticks feeding on birds in Moldova is scarce. To reduce this gap of information, a total of 640 migrating and native birds of 40 species were caught from 2012 to 2015 and examined for the presence of ticks in the Republic of Moldova. Altogether, 262 ticks belonging to five tick species (Ixodes ricunus n = 24...

Five compounds 2-(2-hydroxybenzylidene)- N -(prop-2-en-1-yl)hydrazinecarbothioamide ( H 2 L ), bis[ μ 2 -2-({2-[(prop-2-en-1-yl)carbamothioyl]hydrazinylidene}methyl)phenolato- S,N,O:O ]diaquadicopper(II) nitrate ( 1 ), bis[ μ 2 -2-({2-[(prop-2-en-1-yl)carbamothioyl]hydrazinylidene}methyl)phenolato- S,N,O:O ]diimidazoldicopper(II) nitrate ( 2 ), bis...

The DNA barcoding technique promotes the study of molecular diversity as a tool for species identification based on DNA sequences. This paper reflects the efficiency of the DNA barcoding technique for species identification based on tenebrionoid beetles. As a result, the DNA barcode sequences were obtained for eight species of beetles from the supe...

This paper elucidates the results of arachnoentomological research on wild and domestic animals from the Republic of Moldova, which was highlighted with representatives of various groups of temporary or permanent ectoparasites (hard ticks, sucking louse, chewing louse) and species of hematophagous insects from family Hippoboscidae (Lipoptena cervi...

This paper deals with the biological potential of coordination compounds based on binuclear core [MoV2O2E2]²⁺ (E = O or S) coordinated with commercially available ligands such as oxalates (Ox²⁻), L-cysteine (L-cys²⁻), L-histidine (L-his⁻), Iminodiacetate (IDA²⁻), Nitrilotriacetate (HNTA²⁻ or NTA³⁻) or ethylenediamine tetraacetate (EDTA⁴⁻) by means...

In the lower Dniester, polyploid females of the hybrid complex Cobitis taenia are a portion spawning species with asynchronous development of germ cells during the entire breeding period. The spawning season in this water basin begins in the second decade of May and ends in July. In the population, in parallel with females, hermaphrodite individual...

Corn is one of the major technical field crops in the Republic of Moldova, advantageous in bioecological and productive aspects, which is invaded annually by the harmful organisms with considerable parasitic impact. The phytosanitary control results, carried out annually and seasonally, comparatively in the corn plantations, notice a significant di...

Five compounds 2-(2-Hydroxybenzylidene)-N-(prop-2-en1-yl)hydrazinecarbothioamide (H2L), bis[μ2-2-({2-[(prop-2-en-1-yl) carbamothioyl] hydrazinylidene}methyl) phenolatoS,N,O:O] diaquadicopper (II) nitrate (1), bis [μ2-2-({2-[(prop-2-en-1-yl) carbamothioyl] hydrazinylidene}methyl)phenolato-S,N,O:O]d iimidazoldicopper(II) nitrate (2), bis[μ2-2-({2-[(p...

A pitfall survey of beetles in steppe ecosystems of the Republic of Moldova was conducted. Five locations were investigated, two from the Balti steppe and three from the Bugeac steppe. As a result, a total of 563 beetle specimens, belonging to 98 species, 51 genera, and 15 families were collected. Among families recorded Carabidae was the one with...

The European legislative on the use of different control strategies against plant-parasitic nematodes, with particular reference to pesticides, is constantly evolving, sometimes causing confusion in the sector operators. This article highlights the nematode control management allowed in the C Zone of the European Union, which includes the use of ch...

The first review of aquatic arthropods from the Republic of Moldova is presented. It is based on literature data and faunistic materials collected in 1946-2018 by researchers of the Institute of Zoology, Chișinău. The checklist includes data about 461 species belonging to six classes: Arachnida (one species), Bran-chiopoda (two species), Malacostra...

The invasive alien bivalve species Sinanodonta woodiana has been reported for the first time from the Republic of Moldova in 2003. In the study period 2008-2017, this species was recorded at six sampling stations in the Prut River basin: Leova, Goteşti, Cahul, Lake Manta, Lake Beleu, and Cîşliţa-Prut, which basin part belongs to the Wetland Danube...

The potato cyst nematode Globodera pallida is a major pest of the potato crop. Abamectin is a biological pesticide showing high nematicide activity, but its efficacy to control G. pallida has not been investigated to date. In this study, combination of different abamectin concentrations ranging from 1.125 to 36 µg/mL x exposure times from 24 to 384...

A pot trail and field observations were carried out to assess the pathogenicity of the cyst nematode Heterodera crucifere on cabbage plants (Brassica oleoracea). In the pot experiment H. cruciferae cysts were extracted by the Fenwick can from a soil heavily infested (64 eggs and J2/mL soil) collected from a field in which cabbage plants showed stun...

Curves for graphical estimation of yield losses caused by plant parasitic nematodes were calculated on the basis of the relationship between soil nematode population density and damage to plants as described by the Seinhort’s equation y = m + (1 – m) z(P-T). By a logarithmic transformation this equation was transformed as y = m + (1 – m) 1.05[(P/-T...

We developed a new invention that relates to method for assessing the toxicity of chemical substances.The method of the invention includes the preparation of the culture of Paramecium caudatum, adding to the samples investigated to test chemicals in various concentrations, incubating the sample to be studied and control the addition of colourant 3-...

Progressive generation of total joint implant‐derived wear particles is one of the major risk factors in development of peri‐prosthetic osteolysis especially in the aging society. It is commonly accepted that macrophages predominantly drive the inflammatory response to wear debris particles. Among various surface receptors that activate the macroph...

Prutul de Jos Natural reserve located in the Cahul region of the Republic of Moldova is a protected area of importance for flora and fauna and presents a favorable place for migratory bird species. The mosquito surveys have been conducted in this area since 2011 using CDC traps and dipping techniques. The mosquito larvae were sampled in ground pool...

The present study documents three specimens of Benthophiloides brauneri from the River Dniester. It is one of the rarest freshwater fishes in Europe, living along the western coast of the Black and Asov Seas, but these new records are 200 river km from the coast. We discuss whether the species has recently started to establish inland populations or...

Background: Over the last two decades, a significant spread of dirofilariasis has been observed in eastern and central Europe. However, data on the circulation of Dirofilaria spp. in Moldova were absent although direct neighbor states reported high incidence rates of human dirofilariasis. Methods: Daily mean temperature data were used to calculate...

Tatianaerhynchites aequatus (L.) (Coleoptera: Rhynchitidae), is an economically important pest species of fruit crops (Rosaceae). This study investigates population genetic structure of T. aequatus at the crossroads of biogeographic regions in Eastern Europe. To estimate gene flow and genetic variation, we sequenced a 794-bp fragment of the mitocho...

The present paper describes some peculiarities of the growth and reproduction of Carassius auratus s. latofrom the ecosystems of Lower Prut and Beleu Lake. This taxon is characterized by asynchronic development of oocytes and lying of three portions of eggs during the reproductive cycle. The histological analysis of the ovaries of Carassius auratus...

Phytoparasitic nematodes can cause severe yield losses to numerous vegetables therefore it is necessary their control. To evaluate the efficacy of two essential oils (EOs) isolated from Thymus vulgaris and Cinnamomum camphora in the control of the potato cyst nematode Globodera rostochiensis an in vitro experiment (hatching test) was carried out. B...

A countrywide field survey of immature mosquitoes was conducted in Moldova with the aim to evaluate the Culicidae species composition in different larval habitats and their distribution in the country. In total, 259 potential larval habitats were sampled in the 53 localities, resulting in 9,456 specimens. Twenty species belonging to the genera Anop...

The addition of organic material to soil can be an effective alternative to environmentally unsafe chemical treatments for the control of plant parasitic nematodes. The effects of vermicompost and aqueous solutions of vermicompost (vermicompost tea) alone or mixed with urea on the development and survival of two potato-cyst nematodes, Globodera ros...

This article reports on the beetle diversity and abundance study conducted during 2009 and 2010 in three alfalfa fields located near Lozova, Ivancea and Trebujeni in the central part of the Republic of Moldova. All insects were collected using pitfall traps and sweeping techniques. In total, 843 beetle specimens were collected, representing 63 spec...

The diversity and state of the benthic invertebrate communities from the Pruth River (within the borders of the Republic of Moldova) has been investigated during May of 2012-August of 2013. Twelve sampling stations have been chosen along the river, including Costeşti-Stânca reservoir. During the given period 159 taxa of the benthic macroinvertebrat...

Nematode faunal responses were studied under long-term, continuous sugar beet and crop rotations without fertilizer and with the combined application of manure with mineral fertilizers. Differences attributable to the different treatments were assessed in terms of abundance, species diversity of nematode communities, and functional guilds combining...

European Community on the use of pesticides on agricultural crops and according to the necessity to find new control methods at low environmental impact, a pot experiment in glasshouse on tomato was undertaken to verify the efficacy of soil ozonated water treatments against the root-knot nematode Meloidogyne incognita. Moreover, histological observ...

The present study was conducted to identify the microbial flora of pest weevils Sciaphobus squalidus (Gyll.), Tatianaerhynchites aequatus (L.) and Byctiscus betulae L., which may provide novel approaches for insect biocontrol. According to morphological, physiological, biochemical and molecular properties thirteen bacteria were revealed and charact...

A list of beetles considered to be of alien origin in the Republic of Moldova has been set up, with data on their origin, habitat, trophic range and economic impact. Altogether, 75 alien beetle species have been revealed, which represents 2.98% of local coleopteran fauna. The most numerous taxonomic groups are Curculionidae (30 species), Staphylini...

Prut is the second largest river in Moldova. It takes its beginning from the South-East side of Goverla peak, 15 km South-Southwest of Vorokhta village in the woody Carpathian mountain massif Cernogora. The total length of the river is 967 km, in Moldova’s borders—695 km, the catchment area is 27,540 km2; Prut waters pours in the Danube at 164 km f...

Characterizing the tick-borne microorganism communities of Ixodes ricinus (sheep tick) and Ixodes persulcatus (taiga tick) from the I. ricinus species complex in distinct geographical regions of Eastern Europe and European Russia, we demonstrated differences between the two ticks. Taiga ticks were more frequently mono- and co-infected than sheep ti...

The mosquito fauna of the Republic of Moldova is poorly known. In an effort to understand the Culicidae fauna better, mosquito collections have been conducted between early April and middle November from 2008 to 2012. A total of 10,923 larval specimens and 8,246 adults were collected from 20 regions of Moldova. Altogether 36 species have been recor...

This study is the first report about the prevalence of tick-borne pathogens, as well as their (co-)infection rates, in the museum-archived I. ricinus female ticks collected in Moldova in 1960. A total of 16.7% (21/126) ticks was mono-infected. Borrelia burgdorferi sensu stricto was revealed as the most abundant species (4.8%) followed by B. garinii...

The present paper is an updated list of beetle species (Coleoptera) from the Republic of Moldova. The 2512 species belong to 14 superfamilies, 69 families and 150 subfamilies. The list is based on specialized literature sources, collections and faunistic researches made by the author.

We report the finding of tick-borne encephalitis (TBE)-virus in indigenous Ixodes ricinus (L.), 'Candidatus Neoehrlichia mikurensis' in exotic Ixodes frontalis (Panzer) and Rickettsia aeshlimannii in exotic Hyalomma marginatum Koch subadult ticks detached from 18.5% (107/577) infested migratory birds in the Baltic region of Russia. This is the firs...

The Chernobyl nuclear disaster resulted in contamination of vast areas in Europe. To date, there is little knowledge about the effects of radioactive contamination on tick species. We sampled ticks from vegetation and large-sized wild mammals belonging to orders Carnivora and Artiodactyla at sites with 0.76, 1.91, and 4.50 mSv/hr ionizing radiation...

To reveal the prevalence of spotted fever group (SFG) rickettsiae and Babesia sp. in Ixodes ricinus (L.) ticks from migratory birds, 236 specimens represented 8 species of Passeriformes and were collected at Curonian Spit in Kaliningrad enclave of North-Western Russia. The ticks (total 126) being detached from four bird species, Turdus philomelos,...

Ostroumov S.A., Toderas I.K., Zubcov E.I., Kotelevtsev S.V., Ermakov V.V., Krupina A.A., Ene A., Mikus A.A., Biletchi L.I., Briahnă A., Miron A. Biogenic copper migration in aquatic ecosystems // Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţele Vieţii. 2009, No 3 (309), p. 4-22. https://www.researchgate.net/publication/260461525 ; The English...

Ostroumov S.A., Kolesov G.M., Toderas I.K., Eni A. Detection of elements (La, Au, U, Cs, Ba, Na, Ce, Se, Sb, Hf, Th, Sc, Sm and others) in biogenic detritus of aquatic microcosms with Viviparus viviparus, Unio pictorum, Ceratophyllum demersum. – Bulletin of Acad. Sci. of Moldova. Life Sciences [Izvestia Akademii Nauk Moldovy. Nauki o zhizni] (ISSN...

https://www.researchgate.net/publication/261364065; Academician Ion Toderas, Member (Russian Academy of Sciences) Eugene A. Kriksunov, Member (Russian Academy of Sciences) Gennadii Rozenberg, Professor Vadim V. Ermakov. On scientific results of a researcher at M.V.Lomonosov Moscow State University. Area: ecology, environment. Fruitful scientific ac...

REMEDII NOI PENTRU ALBINE Au fost elaborate tehnologii de producere a unor preparate sanogene de o nouă generaţie Apispir şi BioR Sp având ca sursă primară biomasa de Spirulină. Pe lângă efectul stimulator asupra prolifi cităţii, cantităţii şi calităţii produselor apicole, aceste preparate fortifi că statusul imun, contribuind astfel şi la depăşire...

Wild birds are important reservoirs of Borrelia burgdorferi sensu lato, the bacterial species complex comprising the agents of Lyme disease in North America and Eurasia. We studied the prevalence of B. burgdorferi s.l. in Ixodes ricinus and I. lividus ticks collected from wild birds in the Republic of Moldova. Wild birds were captured in Kodri fore...

We examined 198 questing Ixodes ricinus ticks collected in Chisinau City, Republic of Moldova by PCR assays for Anaplasma phagocytophilum, Borrelia burgdorferi sensu lato and co-infection of both pathogens, which were detected in 9%, 25.2% and 2.5% of tested ticks, respectively. B. burgdorferi s.l. genotyping revealed the presence of five genospeci...