3 results match your criteria: "Zoology and Evolutionary Biology University of Regensburg Regensburg Germany.[Affiliation]"
Article Synopsis
- Sexual selection involves multiple interacting processes, which can either support or conflict with each other; in the seed bug, there's weak pre-copulatory selection but strong post-copulatory selection.
- About 40%-60% of mating attempts result in failure, particularly affecting smaller females, who are less likely to be inseminated due to a male preference for larger females.
- Research indicates that sperm competition primarily depends on copulation duration, with longer copulations enhancing male paternity share, while the influence of female size on paternity is minimal, suggesting a relative independence between cryptic male choice and sperm competition in this species.
Refugia are critical for the maintenance of biodiversity during the periods of Quaternary climatic oscillations. The long-term persistence of refugial populations in a large continuous refugium has resulted in a homogenous pattern of genetic structure among populations, while highly structured evolutionary lineages characterize the restriction of refugial populations to smaller subrefugia. These mechanisms have resulted in the identification of hot spots of biodiversity within putative glacial refugia.
View Article and Find Full Text PDFCrayfish can be used as model organisms in phylogeographic and divergence time studies if reliable calibrations are available. This study presents a comprehensive investigation into the phylogeography of the European stone crayfish () and includes samples from previously unstudied sites. Two mitochondrial markers were used to reveal evolutionary relationships among haplogroups throughout the species' distributional range and to estimate the divergence time by employing both substitution rates and geological calibration methods.
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