A5010357697- Entomopathogenic Microorganisms in Pest Control
- Nematode management and characterization studies
- Forest Insect Ecology and Management
- Insect and Arachnid Ecology and Behavior
- Parasite Biology and Host Interactions
- Insects and Parasite Interactions
- Insect and Pesticide Research
- Marine Biology and Ecology Research
- Legume Nitrogen Fixing Symbiosis
Zoological Institute
2018-2024
University of Applied Sciences Worms
2022
Saint Petersburg State Forest Technical University
2015
A new species, Bursaphelenchus ulmophilus sp. n., from the hofmanni group is described morphologically and molecularly. This nematode species was found associated with Dutch elm disease of Ulmus glabra in parks St Petersburg, Russia, vectored by adults larvae bark beetles Scolytus multistriatus S. scolytus . n. characterised following features: body length 600-850 μm, stylet 12-14 μm long base slightly smoothly expanded, but lacking knobs, median bulb almost spherical female ovoid male,...
In this study juvenile stages of Bursaphelenchus crenati (Sexdentati group) were distinguished based mainly on the genital primordium structure. Dauer stage juveniles sampled under elytra Hylesinus crenatus in galleries bark wilted Fraxinus excelsior Voronezh region Russia and multiplied laboratory cultures fungus Botrytis cinerea. Individual development included five (J1-J4 adults) separated by molts. The first molt J1 to J2 occurred inside egg was at hatching stage. Sex can be identified...
Summary To develop models of forest ecosystem functioning, it is necessary to estimate parameters the population dynamics nematode species. Parameters ontogenesis Bursaphelenchus willibaldi from oak in culture fungus Botrytis cinerea were determined vitro : oviposition began 2.7 (1-3) days after inoculation with adult nematodes; timelines juvenile formation were: second-stage juveniles: 3.2 (3-4) days, third-stage 3.6 (3-5) fourth-stage 4.8 (3-6) first generation (1G) ended a J4 moulting 5.8...
The parameters of individual development and population cycle in vitro nematodes Panagrolaimus detritophagus were revealed. are bacterial feeders commensals the cerambycid Monochamus galloprovincialis from pine Pinus sylvestris; use beetles as vectors. Mean time (T) egg to juvenile is 1–2 days for J2, 3–4 J3, 4–7 J4; adults (G, generation) 7 (6–8) days. In equal 4 generations ends with 90% survival juveniles (J3, day 34). growth phase population, proportion eggs exceeds other stages...
A new nematode species, Bursaphelenchus ussuriensis sp. n. is described in the bark beetle–elm tree association (Scolytus jacobsoni and Ulmus davidiana var. japonica f. suberosa) Asian Pacific region of Russia. The species belongs to Hofmanni group closest B. ulmophilus. Its characteristics are as follows: lateral field with three incisures, body length 497–771 µm, post-uterine sac 3.6–5.4 times vulval diam, 56 (39–66)% vulva–anus distance, spicule 10.3 (9.5–12.5 µm). differs from all...
Abstract The endoparasitic nematode, Bursaphelenchus crenati , in beetle tunnels of Hylesinus crenatus from the ash Fraxinus excelsior L. with signs dieback, is recorded for first time Central Russia and Belarus. Third‐stage dauer juveniles were extracted bark beetle, H. crenatus, cultured on Botrytis cinerea. Morphological, morphometric molecular analyses these populations are presented here. Some morphological differences dauers adults found between Belarusian Russian populations, which...
Abstract The nematode Rhabditolaimus ulmi was found in galleries, adults, and larvae of Scolytus multistriatus , the vector Dutch elm disease, St. Petersburg parks. This co-occurred with Bursaphelenchus ulmophilus which is another phoretic partner S. . Nematodes were cultured on fungus Botryotinia fuckeliana potato sugar agar (PA) used for morphological analyses juveniles, eggs, dauers. Nematode females showed a didelphic female genital tract rather than monoprodelphic gonad as reported...
Summary The copulatory organs and pharynx are important for nematode classification. This research aimed to study the musculature of wood-inhabiting nematode, Rhabditolaimus ulmi , using confocal microscopy. lip region is hexagonal with enlarged lateral lips; diplogastrid type two bulbs. corpus comprises fused stegostoma, procorpus metacorpus, six glands opening in stegostoma limen. has a large dorsal bulge posterior bulb devoid valve, circles dilators basal sphincter. female genital muscles...