Results 61 to 70 of about 1,252 (113)

The evolution of entomopathogeny in nematodes

Ecology and Evolution, Volume 14, Issue 2, February 2024.
Through convergent evolution, the entomopathogeny in nematodes is widespread within the Rhaditidae families, owing to the shared ecological and evolutionary attributes raised from saprophagy, phoresis, and necromeny. Abstract Understanding how parasites evolved is crucial to understand the host and parasite interaction.
V. J. Trejo‐Meléndez, J. Ibarra‐Rendón, J. Contreras‐Garduño   +2 more
wiley   +1 more source

The Role of Epigenetic Switches in Polyphenism Control: Implications from a Nematode Model for the Developmental Regulation of Alternative Phenotypes

Biology
Polyphenisms, the capability of organisms to form two or more alternative phenotypes in response to environmental variation, are prevalent in nature. However, associated molecular mechanisms and potential general principles of polyphenisms among major ...
Sara Wighard, Ralf J. Sommer
doaj   +1 more source

The role of plasticity and stochasticity in coexistence

Ecology Letters, Volume 27, Issue 2, February 2024.
Phenotypic plasticity, which is widespread in nature, can profoundly affect the composition of an ecological assembly. We present an integrative theoretical–experimental framework using the nematode plasticity model Pristionchus pacificus to predict how diet‐induced polyphenism can result in exclusion and/or coexistence. Abstract Species coexistence in
Ata Kalirad, Ralf J. Sommer
wiley   +1 more source

Stochastic and conditional regulation of nematode mouth-form dimorphisms

Frontiers in Ecology and Evolution, 2016
Integrative research at the interphase between ecology, developmental, and evolutionary biology increasingly highlights the importance of phenotypic plasticity, the property of a single genotype to produce different phenotypes depending on environmental ...
Ralf J Sommer, Vladislav eSusoy
doaj   +1 more source

A host beetle pheromone regulates development and behavior in the nematode Pristionchus pacificus

eLife, 2014
Nematodes and insects are the two most speciose animal phyla and nematode–insect associations encompass widespread biological interactions. To dissect the chemical signals and the genes mediating this association, we investigated the effect of an ...
Jessica K Cinkornpumin, Dona R Wisidagama, Veronika Rapoport, James L Go, Christoph Dieterich, Xiaoyue Wang, Ralf J Sommer, Ray L Hong   +7 more
doaj   +1 more source

Evolution of lateralized gustation in nematodes

eLife
Animals with small nervous systems have a limited number of sensory neurons that must encode information from a changing environment. This problem is particularly exacerbated in nematodes that populate a wide variety of distinct ecological niches but ...
Marisa Mackie, Vivian Vy Le, Heather R Carstensen, Nicole R Kushnir, Dylan L Castro, Ivan M Dimov, Kathleen T Quach, Steven J Cook, Oliver Hobert, Sreekanth H Chalasani, Ray L Hong   +10 more
doaj   +1 more source

Computational and phylogenetic validation of nematode horizontal gene transfer

BMC Biology, 2011
Sequencing of expressed genes has shown that nematodes, particularly the plant-parasitic nematodes, have genes purportedly acquired from other kingdoms by horizontal gene transfer.
Bird David, Scholl Elizabeth H
doaj   +1 more source

Genome Announcement: Further Improved Genome Assembly of Parapristionchus giblindavisi

Journal of Nematology
Nematodes such as Caenorhabditis elegans and Pristionchus pacificus are powerful models for associating phenotypes to genotypes. However, exploring the evolution of identified genetic loci requires a robust phylogenomic framework.
Röseler Waltraud, Yoshida Kohta, Rödelsperger Christian   +2 more
doaj   +1 more source

Environmental variables explain genetic structure in a beetle-associated nematode.

PLoS ONE, 2014
The distribution of a species is a complex expression of its ecological and evolutionary history and integrating population genetic, environmental, and ecological data can provide new insights into the effects of the environment on the population ...
Angela McGaughran, Katy Morgan, Ralf J Sommer   +2 more
doaj   +1 more source

Adult Influence on Juvenile Phenotypes by Stage-Specific Pheromone Production

iScience, 2018
Summary: Many animal and plant species respond to population density by phenotypic plasticity. To investigate if specific age classes and/or cross-generational signaling affect density-dependent plasticity, we developed a dye-based method to ...
Michael S. Werner, Marc H. Claaßen, Tess Renahan, Mohannad Dardiry, Ralf J. Sommer   +4 more
doaj   +1 more source