A generalization of reaction-diffusion models to multigeneration biological species is presented. It is based on more complex random walks than those in previous approaches. The new model is developed analytically up to infinite order. Our predictions for the speed agree to experimental data for several butterfly species better than existing models. The predicted dependence for the speed on the number of generations per year allows us to explain the change in speed observed for a specific invasion.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevE.66.062901 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Fish models to explore epigenetic determinants of hypoxia-tolerance.
Comp Biochem Physiol A Mol Integr Physiol
January 2025
Department of Biology, University of Ottawa, K1N6N5, 20 Marie Curie, Ottawa, ON, Canada. Electronic address:
The occurrence of environmental hypoxia in freshwater and marine aquatic systems has increased over the last century and is predicted to further increase with climate change. As members of the largest extant vertebrate group, freshwater fishes, and to a much lesser extent marine fishes, are vulnerable to increased occurrence of hypoxia. This is important as fishes render important ecosystem services and have important cultural and economic roles.
View Article and Find Full Text PDFMulti-generational exposure of Daphnia magna to pharmaceuticals: Effects on colonization, reproduction, and habitat selection behavior.
Ecotoxicol Environ Saf
January 2025
Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalusia (ICMAN - CSIC), Puerto Real 11519, Spain. Electronic address:
The presence of pharmaceuticals in the aquatic environment is increasing due to their growing use for human health. Although most studies are based on short exposures to these contaminants, the present study has emerged from the need to study pharmaceuticals in aquatic organisms over a long-term exposure to understand any multi-generational chronic effects and alterations regarding habitat selection. Therefore, this study shows: (1) the ability of Daphnia magna to colonize environments contaminated with caffeine, ibuprofen and fluoxetine, and (2) the effect of these pharmaceuticals on reproduction and habitat selection (under two scenarios: with and without food) after a long-term exposure period of three generations.
View Article and Find Full Text PDFTwo Hits of EDCs Three Generations Apart: Evaluating Multigenerational Anxiety-Like Behavioral Phenotypes in Male Rats Exposed to Aroclor 1221 and Vinclozolin.
Environ Health Perspect
December 2024
Division of Pharmacology & Toxicology, The University of Texas at Austin, Austin, Texas, USA.
Background: Increasing evidence supports an association of endocrine-disrupting chemical (EDC) exposures with adverse biological effects in humans and wildlife. Recent studies reveal that health consequences of environmental exposures may persist or emerge across generations. This creates a dual conundrum: that we are exposed to contemporary environmental chemicals overlaid upon the inheritance of our ancestors' exposure profiles.
View Article and Find Full Text PDFTwo Hits of EDCs Three Generations Apart: Evaluating Multigenerational Anxiety-Like Behavioral Phenotypes in Female Rats Exposed to Aroclor 1221 and Vinclozolin.
Environ Health Perspect
December 2024
Division of Pharmacology & Toxicology, The University of Texas at Austin, Austin, Texas, USA.
Background: Endocrine-disrupting chemicals (EDCs) are exogenous chemical compounds that interfere with the normal function of the endocrine system and are linked to direct and inherited adverse effects in both humans and wildlife. Legacy EDCs such as polychlorinated biphenyls (PCBs) are no longer used yet remain detectable in biological specimens around the world; concurrently, we are exposed to newer EDCs like the fungicide vinclozolin (VIN). This combination of individuals' direct environmental chemical exposures and any heritable changes caused by their ancestors' chemical exposures leads to a layered pattern of both direct and ancestrally inherited exposures that might have cumulative effects over generations.
View Article and Find Full Text PDFGenetic, natal and spatial drivers of social phenotypes in wild great tits.
J Anim Ecol
December 2024
Department of Biology, Edward Grey Institute of Field Ornithology, University of Oxford, Oxford, UK.
In social animals, group dynamics profoundly influence collective behaviours, vital in processes like information sharing and predator vigilance. Disentangling the causes of individual-level variation in social behaviours is crucial for understanding the evolution of sociality. This requires the estimation of the genetic and environmental basis of these behaviours, which is challenging in uncontrolled wild populations.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!