A5051125540- Nematode management and characterization studies
- Parasite Biology and Host Interactions
- Insect and Arachnid Ecology and Behavior
- Marine Biology and Ecology Research
- Entomopathogenic Microorganisms in Pest Control
- Polar Research and Ecology
- Plant and animal studies
- Tardigrade Biology and Ecology
- Helminth infection and control
- Mollusks and Parasites Studies
- Isotope Analysis in Ecology
- Soil Carbon and Nitrogen Dynamics
- Cephalopods and Marine Biology
- Microbial Community Ecology and Physiology
- Biocrusts and Microbial Ecology
- Insect and Pesticide Research
- Protist diversity and phylogeny
- Peatlands and Wetlands Ecology
- Invertebrate Taxonomy and Ecology
- Insects and Parasite Interactions
- Study of Mite Species
- Marine and coastal plant biology
- Paleontology and Stratigraphy of Fossils
- Lichen and fungal ecology
- Environmental DNA in Biodiversity Studies
Swedish Museum of Natural History
2012-2024
University of Skövde
2020
Stockholm University
1984-1988
Populations of three rare species the genus Acrobeles are described from Kelso Dunes area, Mojave National Preserve, southern California. One population is identified as belonging to A. undulatus and compared with type Venezuela one Iran. Males this for first time. Another ornatus Colorado, USA. Specimens dimorphus Namibia. Descriptions new material add morphological data important identification, broaden diagnosis increase distribution patterns these species.
Specimens of Drilocephalobus moldavicus are described from the Kelso Dunes area, Mojave National Preserve, southern California. This is first record genus in North America. The specimens this population characterized by a body length 322–417 µm females and 403 male; cuticle finely annulated; lateral field with five incisures, extending to phasmid two incisures almost tail terminus both sexes; lip region helmet-shaped, offset contour; lips amalgamated; stoma thin walls lacking...
A new species of Paracrobeles, P. kelsodunensis sp. nov. is described from the Kelso Dunes area, Mojave National Preserve, southern California. Paracrobeles particularly characterised by a body length 469–626 μm in females and 463–569 males; lateral field with four incisures, extending almost to tail terminus; three pairs asymmetrical lips, separated U-shaped primary axils two long guarding processes, each lip usually tines along its margin; labial probolae, deeply bifurcated, slender prongs...
This paper reports on the genus Cobbionema Filipjev, 1922 in Sweden with description of four species and a revision genus. acrocerca is relatively small size, tail that has conical proximal digitate distal section. cylindrolaimoides Schuurmans Stekhoven, 1950 similar to C. most characters except having larger body size heavily cuticularized mandibles. brevispicula sp. nov. characterised by short spicules conoid tail. acuminata long two-part spicule, three (one mid dorsal two...
Eight species of Diplopeltoides are described from the Swedish west coast. suecicus sp. nov. has cuticle with longitudinal striation visible only under SEM; cuticular plate underlying cephalic around amphid present; sensilla 4–6 µm long; an inverted U-shape; wide space between amphidial branches areolated; spicules 27–31 gubernaculum caudal apophysis. longicaudatus is characterized by a without striation; 13 narrow not ornamented; unequal in size, absent; midventral precloacal ridge present....
Necropsies of Baltic grey (Halichoerus grypus) and ringed seals (Pusa hispida) presented a rare opportunity to study their acanthocephalan fauna. Both species hosted adults three the genus Corynosoma Lühe, 1904, namely C. magdaleni Montreuil, 1958, semerme (Forsell, 1904) Lühe 1911 strumosum (Rudolphi, 1802) 1904. A comparative morphological analysis these Corynosoma, combining both light scanning electron microscopy, was performed for first time. Sexual dimorphism in size shape trunk...
(1) The effects of the nematode fauna four cropping systems were studied for 5 years in an experimental field central Sweden. Plots cropped as follows: barley with (B 120) and without (BO) nitrogen fertilization; grass (GL); lucerne (LL). (2) perennial crops had, on average, higher densities (GL 8 7 LL 9 x 106 m-2) than annual (BO 6 B120 m-2). Root production appeared to influence total density. (3) highest diversity nematodes was found GL, which differed many respects from other systems....
Specimens of a population Cribronema collected in Cameroon are described as sturhani sp. n. The new species resembles C. cribrum, which is the only genus, but it differs from by following features: somewhat shorter tail females, longer spermatheca and postuterine vulval sac, terminus females pointed vs. harpoon-shaped, presence absence males.
Populations of Stegelleta are described from California, New Zealand and Senegal. An amphimictic population California is identified as belonging to S. incisa compared with type specimens Utah an Italy. One close but considered represent a new species, laterocornuta sp. nov. It particularly characterised by 379–512 μm long body in females 365–476 males; cuticle divided into 16 rows blocks at midbody (excluding lateral field); field four incisures; three pairs asymmetrical lips, U-shaped...
In search of potential new indoor allergen sources, all mites in dust from homes 55 asthmatic children living three climatic regions Sweden were counted and identified by light microscope. Antibodies the IgE class against house-dust storage measured corresponding serum samples. Mites found but two northernmost area, where levels also lower than other regions. The highest mite densities most often bedrooms (50%) rooms (40%). Mite density was increased with high humidity higher bungalows...
The new genus Neodiplopeltula gen. nov. is proposed to accommodate those species from the Diplopeltula Gerlach, 1950 that possess following morphological characters: amphids in shape of an elongated loop, a well-developed subcylindrical stoma and outstretched ovaries. considered inquirendum et incertae sedis. Four placed are redescribed. taxonomic changes proposed: asymmetrica (Allgén, 1935) comb. nov.; barentsi (Steiner, 1916) bathmanni (Jensen, 1991) cuspidiboja (Leduc, 2017) indica...
Abstract Plant species identity and diversity may greatly influence the composition of nematode fauna. In this study development fauna was followed in a field experiment on arable soil with monocultures mixtures several plant species. Experimental plots were sown one, four or 12 grass, legumes forbs sampled times 7 years. Nematode little influenced by diversity. Due to pronounced increase Paratylenchus projectus populations, Shannon index decreased treatments towards end experiment....