Results 71 to 80 of about 5,403 (156)

Two new Species of Pristionchus (Nematoda: Diplogastridae) include the Gonochoristic Sister Species of P. fissidentatus

Journal of Nematology, 2019
The genus Pristionchus (Kreis, 1932) consists of more than 30 soil nematode species that are often found in association with scarab beetles. Three major radiations have resulted in the “maupasi species group” in America, the “pacificus species group” in ...
Herrmann Matthias, Kanzaki Natsumi, Weiler Christian, Yoshida Kohta, RÖdelsperger Christian, Sommer Ralf J.   +5 more
doaj   +1 more source

Mutation Rates and Intraspecific Divergence of the Mitochondrial Genome of Pristionchus pacificus [PDF]

Molecular Biology and Evolution, 2011
Evolutionary reconstruction of the natural history of an organism ultimately requires knowledge about the development, population genetics, ecology, and phylogeny of the species. Such investigations would benefit from studies of mutational processes because mutations are the source of natural variation.
Molnar, R., Bartelmes, G., Dinkelacker, I., Witte, H., Sommer, R.   +4 more
openaire   +3 more sources

Ultrastructural Description of Amphid Neurons in the Pine Wood Nematode Indicates Concurrent Evolution of the Stylet and Specific Neurons

Journal of Comparative Neurology, Volume 533, Issue 11, November 2025.
Nematodes possess simple nervous systems yet show broad ecological diversity. In the fungal‐feeding plant‐parasitic nematode Bursaphelenchus xylophilus, we identified type V neurons in the amphid. These neurons, likely associated with the stylet, have trifurcated cilia and may have a potential mechanosensory role in triggering stylet‐thrusting behavior
Taisuke Ekino, Ryoji Shinya
wiley   +1 more source

The Role of Sulfation in Nematode Development and Phenotypic Plasticity

Frontiers in Molecular Biosciences, 2022
Sulfation is poorly understood in most invertebrates and a potential role of sulfation in the regulation of developmental and physiological processes of these organisms remains unclear. Also, animal model system approaches did not identify many sulfation-
Catia Igreja, Ralf J. Sommer
doaj   +1 more source

AppaDB: an AcedB database for the nematode satellite organism Pristionchus pacificus [PDF]

Nucleic Acids Research, 2004
Pristionchus pacificus is a free-living nematode of the Diplogastridae family and was recently developed as a satellite system in evolutionary developmental biology. AppaDB, a P.pacificus database, was created (http://appadb.eb.tuebingen. mpg.de) to integrate the genomic data of P.pacificus, comprising the physical map, genetic linkage map, EST and BAC
Srinivasan, J., Otto, G., Kahlow, U., Geisler, R., Sommer, R. ; https://orcid.org/0000-0003-1503-7749   +4 more
openaire   +3 more sources

The role of developmental plasticity in eco‐phenotypic population dynamics

Functional Ecology, Volume 39, Issue 11, Page 2985-2998, November 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Individual variation in development can strongly impact population density via its impact on demography. When this variation in development is caused by developmental plasticity, the resulting effects on population density are characterised as ‘eco‐phenotypic dynamics ...
Lukas H. A. Edwards, Isabel M. Smallegange   +1 more
wiley   +1 more source

Description of two new Pristionchus species from South Korea

Journal of Nematology
Based on molecular markers, mating experiments, morphological observations and ecological data, two Pristionchus species (Nematoda: Diplogastridae) new to science are described.
Herrmann Matthias, Kanzaki Natsumi, Weiler Christian, Theam Penghieng, Rödelsperger Christian, Sommer Ralf   +5 more
doaj   +1 more source

An epigenomic threshold hypothesis for integrating dynamic environmental signals into functional models of developmental polyphenisms

Functional Ecology, Volume 39, Issue 11, Page 3050-3060, November 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Interactions between developing embryos and a multitude of environmental factors (e.g. climate, nutrition, social cues, stress and anthropogenic contaminants) underlie adaptive and non‐adaptive developmental plasticity and carry broad implications across ecological ...
Benjamin B. Parrott, Samantha L. Bock
wiley   +1 more source

Glutamate, GABA, and dense-core vesicle secretion regulate predatory feeding in the nematode Pristionchus pacificus

bioRxiv
Nematodes are one of the most diverse groups of organisms, found in various environments, and exhibit various feeding behaviours. Pristionchus pacificus displays two types of feeding behaviours: predatory and bacterial feeding. Previously, we showed that
Ageha Onodera, Andrew Zhang, T. Chihara, Ralf J. Sommer, Misako Okumura   +4 more
semanticscholar   +1 more source

Macroecological and Biogeographic Patterns of Kinorhyncha in the Iberian Peninsula

Journal of Biogeography, Volume 52, Issue 11, November 2025.
ABSTRACT Aim Biogeography and macroecology aim to understand the processes that determine patterns in nature. In the marine environment, most of what we know has been documented for fish and macrobenthic organisms. As a result, this knowledge is negatively biased towards smaller benthic organisms, including meiofauna.
Luciane A. Guimarães Feitoza, Pablo Damian Borges Guilherme, Nuria Sánchez, María Herranz, Diego Cepeda, Alberto González‐Casarrubios, Ricardo Cardoso Neves, Fernando Pardos, Maikon Di Domenico   +8 more
wiley   +1 more source