Publications by authors named "L S Stevison"
Caloric intake can greatly affect many aspects of an organism's life. A deficiency of calories can lead to stress resulting in decreased fecundity, insufficient calories to maintain tissues and increased lifespan. Conversely, increasing caloric density increases fecundity and decreases lifespan.
View Article and Find Full Text PDFAuthors are often faced with the decision of whether to maximize traditional impact metrics or minimize costs when choosing where to publish the results of their research. Many subscription-based journals now offer the option of paying an article processing charge (APC) to make their work open. Though such "hybrid" journals make research more accessible to readers, their APCs often come with high price tags and can exclude authors who lack the capacity to pay to make their research accessible.
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- Climate change is rapidly increasing vulnerability in species, with physiological responses varying among species, populations, and individuals.
- A study compared two fruit fly species (Drosophila melanogaster and Drosophila pseudoobscura) under different temperature stress conditions, revealing that each species and sex responds differently to heat exposure during development stages.
- Findings indicate notable differences in fecundity, critical thermal maximum, and reproductive stress, highlighting the need for future research to consider these variations to better understand the impacts of rising temperatures.
Speciation can involve phases of divergent adaptation in allopatry and ecological/reproductive character displacement in sympatry or parapatry. Reproductive character displacement can result as a means of preventing hybridization, a process known as reinforcement speciation. In this study, we use whole-genome sequencing (WGS) of two closely related primate species that have experienced introgression in their history, the rhesus () and cynomolgus () macaques, to identify genes exhibiting reproductive character displacement and other patterns consistent with reinforcement speciation.
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- Intrinsic postzygotic isolation results in reduced viability or fertility of hybrids due to genetic incompatibilities between different species' genomes.
- The two main mechanisms traditionally thought to cause this isolation are Dobzhansky-Muller interactions between genes and chromosomal rearrangements affecting meiosis.
- Recent studies indicate that intrinsic postzygotic isolation is more complex than previously understood, involving factors like overall DNA divergence and epigenetic changes, and this review examines these mechanisms across various species while addressing gaps in current knowledge.