Results 41 to 50 of about 1,252 (113)

Horizontal gene transfer of microbial cellulases into nematode genomes is associated with functional assimilation and gene turnover

BMC Evolutionary Biology, 2011
Background Natural acquisition of novel genes from other organisms by horizontal or lateral gene transfer is well established for microorganisms. There is now growing evidence that horizontal gene transfer also plays important roles in the evolution of ...
Dieterich Christoph, Bartelmes Gabi, Schuster Lisa N, Mayer Werner E, Sommer Ralf J   +4 more
doaj   +1 more source

Local Resource Heterogeneity Drives Density‐Dependent Dispersal Expression in a Phoretic Mite

Ecology and Evolution, Volume 16, Issue 8, August 2026.
Regional heterogeneity often selects for dispersal, as this allows individuals to move between environments. However, individuals do not experience regional conditions and must make developmental decisions based on local cues. Using long‐term population experiments, we find that local heterogeneity influences dispersal by exacerbating competition ...
Lukas H. A. Edwards, Isabel M. Smallegange   +1 more
wiley   +1 more source

Analysis of Nematode Ventral Nerve Cords Suggests Multiple Instances of Evolutionary Changes to Neuron Number

Evolution &Development, Volume 28, Issue 2, June 2026.
“Analysis of Nematode Ventral Nerve Cords Suggests Multiple Instances of Evolutionary Addition and Loss of Neurons” Han et al. DAPI staining of Xiphinema sp. (Clade 2) highlighting the neuronal‐like nuclei within the ventral nerve cord. ABSTRACT Despite their diversity in habitats, nematodes are often considered to have a highly conserved neuroanatomy.
Jaeyeong Han, Alyson Ficca, Marissa Lanzatella, Kanika Leang, Matthew Barnum, Jonathan C. T. Boudreaux, Nathan E. Schroeder   +6 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

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

Developing a Robust Multiround HCR‐FISH Method Modified for Caenorhabditis elegans

Genes to Cells, Volume 31, Issue 2, March 2026.
In this study, a multiround HCR‐FISH protocol modified for whole‐mounted C. elegans samples was developed using a technique that attaches hydrogel‐embedded samples to coverglass. This achieved a sample retention rate exceeding 99% and high signal fidelity, enabling multiplex gene profiling in the same individual after whole‐brain functional imaging ...
Xiaoxiong Yang, Jingxuan Zeng, Chung‐Kuan Chen, Yuichi Iino, Yu Toyoshima   +4 more
wiley   +1 more source

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 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

Identification of Distinct Bacillus thuringiensis 4A4 Nematicidal Factors Using the Model Nematodes Pristionchus pacificus and Caenorhabditis elegans

Toxins, 2014
Bacillus thuringiensis has been extensively used for the biological control of insect pests. Nematicidal B. thuringiensis strains have also been identified; however, virulence factors of such strains are poorly investigated.
Igor Iatsenko, Angel Nikolov, Ralf J. Sommer   +2 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