5 Works

Data from: Specialists in ancient trees are more affected by climate than generalists

Leonie A. Gough, Anne Sverdrup-Thygeson, Per Milberg, Hanne E. Pilskog, Niclas Jansson, Mats Jonsell, Tone Birkemoe & Nicklas Jansson
Ancient trees are considered one of the most important habitats for biodiversity in Europe and North America. They support exceptional numbers of specialized species, including a range of rare and endangered wood-living insects. In this study, we use a dataset of 105 sites spanning a climatic gradient along the oak range of Norway and Sweden to investigate the importance of temperature and precipitation on beetle species richness in ancient, hollow oak trees. We expected that...

Data from: Mixed-ancestry and admixture in Kaua’i’s feral chickens: invasion of domestic genes into ancient Red Junglefowl reservoirs?

Eben Gering, Martin Johnsson, Pamela Willis, Thomas Getty & Dominic Wright
A major goal of invasion genetics is to determine how establishment histories shape non-native organisms' genotypes and phenotypes. While domesticated species commonly escape cultivation to invade feral habitats, few studies have examined how this process shapes feral gene pools and traits. We collected genomic and phenotypic data from feral chickens (Gallus gallus) on the Hawaiian island of Kauai to (i) ascertain their origins and (ii) measure standing variation in feral genomes, morphology and behaviour. Mitochondrial...

Data from: Within-population Y-linked genetic variation for lifespan in Drosophila melanogaster

Robert M. Griffin, Damien Le Gall, Holger Schielzeth & Urban Friberg
The view that the Y chromosome is of little importance for phenotypic evolution stems from early studies of Drosophila melanogaster. This species’ Y chromosome contains only 13 protein coding genes, is almost entirely heterochromatic, and is not necessary for male viability. Population genetic theory further suggests that non-neutral variation can only be maintained at the Y chromosome under special circumstances. Yet, recent studies suggest that the D. melanogaster Y chromosome trans-regulates hundreds to thousands of...

Data from: Transcriptomics of colour patterning and colouration shifts in crows

Jelmer W. Poelstra, Nagarjun Vijay, Marc P. Höppner, Jochen B. W. Wolf & M. P. Hoeppner
Animal coloration is one of the most conspicuous phenotypic traits in natural populations and has important implications for adaptation and speciation. Changes in coloration can occur over surprisingly short evolutionary timescales, while recurrence of similar colour patterns across large phylogenetic distances is also common. Even though the genetic basis of pigment production is well understood, little is known about the mechanisms regulating colour patterning. In this study, we shed light on the molecular elements regulating...

Data from: Sexual selection has minimal impact on effective population sizes in species with high rates of random offspring mortality: an empirical demonstration using fitness distributions

Alison Pischedda, Urban Friberg, Andrew D. Stewart, Paige M. Miller & William R. Rice
The effective population size (Ne) is a fundamental parameter in population genetics that influences the rate of loss of genetic diversity. Sexual selection has the potential to reduce Ne by causing the sex-specific distributions of individuals that successfully reproduce to diverge. To empirically estimate the effect of sexual selection on Ne, we obtained fitness distributions for males and females from an outbred, laboratory-adapted population of Drosophila melanogaster. We observed strong sexual selection in this population...

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