58 Works

Recalibration of calculated VO2max against measured VO2max

Jan Engvall, Lars Brudin, Eva Maret, Eva Nylander & Meriam Åström Aneq

Data from: The role of pleiotropy and linkage in genes affecting a sexual ornament and bone allocation in the chicken

Martin Johnsson, Carl-Johan Rubin, Andrey Höglund, Anna-Stina Sahlqvist, Kenneth B. Jonsson, Susanne Kerje, Olov Ekwall, Olle Kämpe, Leif Andersson, Per Jensen & Dominic Wright
Sexual selection and the ornaments that inform such choices have been extensively studied, particularly from a phenotypic perspective. Although more is being revealed about the genetic architecture of sexual ornaments, much still remains to be discovered. The comb of the chicken is one of the most widely recognized sexual ornaments, which has been shown to be correlated with both fecundity and bone allocation. In this study we use a combination of multiple intercrosses between White...

Data from: Feeding environment and other traits shape species' roles in marine food webs

Alyssa R. Cirtwill & Anna Eklöf
Food webs and meso-scale motifs allow us to understand the structure of ecological communities and define species' roles within them. This species-level perspective on networks permits tests for relationships between species' traits and their patterns of direct and indirect interactions. Such relationships could allow us to predict food-web structure based on more easily-obtained trait information. Here we calculated the roles of species (as vectors of motif position frequencies) in six well-resolved marine food webs and...

Data from: The association between alcohol consumption, cardiac biomarkers, left atrial size and re-ablation in patients with atrial fibrillation referred for catheter ablation

Neshro Barmano, Emmanouil Charitakis, Robert Kronstrand, Ulla Walfridsson, Jan-Erik Karlsson, Håkan Walfridsson & Fredrik H. Nyström
Background: Information on alcohol consumption in patients undergoing radiofrequency ablation (RFA) of atrial fibrillation (AF) is often limited by the reliance on self-reports. The aim of this study was to describe the long-term alcohol consumption, measured as ethyl glucuronide in hair (hEtG), in patients undergoing RFA due to AF, and to examine potential associations with cardiac biomarkers, left atrial size and re-ablation within one year after the initial RFA. Methods: The amount of hEtG was...

Data from: The influence of mitonuclear genetic variation on personality in seed beetles

Hanne Løvlie, Elina Immonen, Emil Gustavsson, Erem Kazancioğlu, Göran Arnqvist & H. Lovlie
There is a growing awareness of the influence of mitochondrial genetic variation on life-history phenotypes, particularly via epistatic interactions with nuclear genes. Owing to their direct effect on traits such as metabolic and growth rates, mitonuclear interactions may also affect variation in behavioural types or personalities (i.e. behavioural variation that is consistent within individuals, but differs among individuals). However, this possibility is largely unexplored. We used mitonuclear introgression lines, where three mitochondrial genomes were introgressed...

Data from: Age-related sex differences in body condition and telomere dynamics of red-sided garter snakes

Nicky Rollings, Emily J. Uhrig, Randolf W. Krohmer, Heather L. Waye, Robert T. Mason, Mats Olsson, Camilla M. Whittington, Christopher R. Friesen & Randolph W. Krohmer
Life-history strategies vary dramatically between the sexes, which may drive divergence in sex-specific senescence and mortality rates. Telomeres are tandem nucleotide repeats that protect the ends of chromosomes from erosion during cell division. Telomeres have been implicated in senescence and mortality because they tend to shorten with stress, growth and age. We investigated age-specific telomere length in female and male red-sided garter snakes, Thamnophis sirtalis parietalis. We hypothesized that age-specific telomere length would differ between...

Data from: Mapping phosphorus hotspots in Sydney’s organic wastes: a spatially-explicit inventory to facilitate urban phosphorus recycling

Genevieve S. Metson, Dana Cordell, Brad Ridoutt & Steve Mohr
Phosphorus is an essential element for food production whose main global sources are becoming scarce and expensive. Furthermore, losses of phosphorus throughout the food production chain can also cause serious aquatic pollution. Recycling urban organic waste resources high in phosphorus could simultaneously address scarcity concerns for agricultural producers who reply on phosphorus fertilisers, and waste managers seeking to divert waste from landfills to decrease environmental burdens. Recycling phosphorus back to agricultural lands however requires careful...

The effects of water column dissolved oxygen concentrations on lake methane emissions: Results from a whole-lake oxygenation experiment

Gustav Pajala, Henrique Oliveira Sawakuchi, David Rudberg, Jonathan Schenk, Anna Sieczko, David Seekell, Ingrid Sundgren, Thanh Duc Nguyen, Karlsson Jan & David Bastviken
Lakes represent a major global source of the greenhouse gas methane (CH4) to the atmosphere. Dissolved molecular oxygen (DO) in lakes inhibits production of CH4 and promotes CH4 oxidation. DO is therefore often considered an important regulator of CH4 emissions from lakes. Presence or absence of DO in the water overlying sediments can affect lake CH4 production and emissions in multiple ways, including the extent of CH4 production in the most reactive top sediment layer,...

Evaluating Empirical Models of Lake Methane Emission and Surface Water Concentration across Hemiboreal to Subarctic Regions

Jonathan Schenk, Anna Sieczko, David Rudberg, Gustav Pajala, Henrique Oliveira Sawakuchi, Magnus Gålfalk, Ingrid Sundgren, Nguyen Thanh Duc & David Bastviken

Data from: Aerobic power and flight capacity in birds: a phylogenetic test of the heart-size hypothesis

Roberto F. Nespolo, Cesar González-Lagos, Jaiber J. Solano-Iguaran, Magnus Elfwing, Alvaro Garitano-Zavala, Santiago Mañosa, Juan Carlos Alonso & Jordi Altamiras
Flight capacity is one of the most important innovations in animal evolution; it only evolved in insects, birds, mammals and the extinct pterodactyls. Given that powered flight represents a demanding aerobic activity, an efficient cardiovascular system is essential for the continuous delivery of oxygen to the pectoral muscles during flight. It is well known that the limiting step in the circulation is stroke volume (the volume of blood pumped from the ventricle to the body...

Data from: Putatively adaptive genetic variation in the giant California sea cucumber (Parastichopus californicus) as revealed by environmental association analysis of restriction‐site associated DNA sequencing data

Amanda Xuereb, Christopher M. Kimber, Janelle M.R. Curtis, Louis Bernatchez, Marie-Josée Fortin & Janelle M. R. Curtis
Understanding the spatial scale of local adaptation and the factors associated with adaptive diversity are important objectives for ecology and evolutionary biology, and have significant implications for effective conservation and management of wild populations and natural resources. In this study, we used an environmental association analysis (EAA) to identify important bioclimatic variables correlated with putatively adaptive genetic variation in a benthic marine invertebrate – the giant California sea cucumber (Parastichopus californicus) – spanning coastal British...

Data from: Personality predicts social dominance in male domestic fowl

Anna Favati, Olof Leimar & Hanne Løvlie
Individuals in social species commonly form dominance relationships, where dominant individuals enjoy greater access to resources compared to subordinates. A range of factors such as sex, age, body size and prior experiences has to varying degrees been observed to affect the social status an individual obtains. Recent work on animal personality (i.e. consistent variation in behavioural responses of individuals) demonstrates that personality can co-vary with social status, suggesting that also behavioural variation can play an...

Data from: Morphological and genetic characterization of barley (Hordeum vulgare L.) landraces in the Canary Islands

Jenny Hagenblad, Matti W. Leino, Guacimara Hernández Afonso & Desirée Afonso Morales
Barley has been continuously cultivated in the Canary archipelago for millennia, and to this day landrace barley is the preferred choice for cultivation. We have morphologically and genetically characterized 57 landraces collected during the 21st century and conserved in genebanks. The majority of accessions were of the six-row type. Although landraces from the same island tended to be similar, the results showed morphological and genetic diversity both within and in the case of genetic data...

Data from: Coarse dark patterning functionally constrains adaptive shifts from aposematism to crypsis in strawberry poison frogs

Anna Qvarnström, Andreas Rudh, Torkel Edström, Anders Ödeen, Hanne Løvlie, Birgitta Tullberg & Birgitta S. Tullberg
Ecological specialization often requires tight co-evolution of several traits, which may constrain future evolutionary pathways and make species more prone to extinction. Aposematism and crypsis represent two specialized adaptations to avoid predation. We tested whether the combined effects of color and pattern on prey conspicuousness functionally constrain or facilitate shifts between these two adaptations. We combined data from 17 natural populations of Strawberry poison frogs, Oophaga pumilio with an experimental approach using digitalized images of...

Assessing intrastate cattle shipments from interstate data and expert opinion

Peter Brommesson, Stefan Sellman, Lindsay Beck-Johnson, Clayton N Hallman, Deedra Murieta, Colleen Webb, Ryan Miller, Katie Portacci & Tom Lindström
Live animal shipments are a potential route for transmitting animal diseases between holdings and are crucial when modeling spread of infectious diseases. Yet, complete contact networks are not available in all countries, including the United States. Here, we considered a 10% sample of Interstate Certificate of Veterinary Inspections from one year (2009). We focused on distance dependence in contacts and investigated how different functional forms affect estimates of unobserved intrastate shipments. To further enhance our...

A genome-wide test for paternal indirect genetic effects on lifespan in Drosophila melanogaster

Vinesh N Shenoi, Martin I Brengdahl, Jaime L Grace, Björn Eriksson, Patrik Rydén & Urban Friberg
Exposing sires to various environmental manipulations has demonstrated that paternal effects can be non-trivial also in species where male investment in offspring is almost exclusively limited to sperm. Whether paternal effects also have a genetic component (i.e. paternal indirect genetic effects - PIGEs) in such species is however largely unknown, primarily because of methodological difficulties separating indirect from direct effects of genes. PIGEs may nevertheless be important, since they have the capacity to contribute to...

Data from: Evolution under dietary restriction increases male reproductive performance without survival cost

Felix Zajitschek, Susanne R. K. Zajitschek, Cindy Canton, Grigorios Georgolopoulos, Urban Friberg & Alexei A. Maklakov
Dietary restriction (DR), a reduction in nutrient intake without malnutrition, is the most reproducible way to extend lifespan in a wide range of organisms across the tree of life, yet the evolutionary underpinnings of the DR effect on lifespan are still widely debated. The leading theory suggests that this effect is adaptive and results from reallocation of resources from reproduction to somatic maintenance in order to survive periods of famine in nature. However, such response...

Data from: Twentieth-century changes in the genetic composition of Swedish field pea metapopulations

Jenny Hagenblad, Matti W. Leino & Erik Boström
Landrace crops are formed by local adaptation, genetic drift and gene flow through seed exchange. In reverse, the study of genetic structure between landrace populations can reveal the effects of these forces over time. We present here the analysis of genetic diversity in 40 Swedish field pea (Pisum sativum L.) populations, either available as historical seed samples from the late nineteenth century or as extant gene bank accessions assembled in the late twentieth century. The...

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: Chemodiversity of dissolved organic matter in the Amazon Basin

Michael Gonsior, Juliana Valle, Philippe Schmitt-Kopplin, Norbert Hertkorn, David Bastviken, Jenna Luek, Mourad Harir, Wanderley Bastos & Alex Enrich-Prast
Regions in the Amazon Basin have been associated with specific biogeochemical processes, but a detailed chemical classification of the abundant and ubiquitous dissolved organic matter (DOM), beyond specific indicator compounds and bulk measurements, has not yet been established. We sampled water from different locations in the Negro, Madeira/Jamari and Tapajós River areas to characterize the molecular DOM composition and distribution. Ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) combined with excitation emission matrix (EEM)...

Data from: Between-year changes in community composition shape species' roles in an Arctic plant-pollinator network

Alyssa R. Cirtwill, Tomas Roslin, Claus Rasmussen, Jens Mogens Olesen & Daniel B. Stouffer
Inter-annual turnover in community composition can affect the richness and functioning of ecological communities. If incoming and outgoing species do not interact with the same partners, ecological functions such as pollination may be disrupted. Here, we explore the extent to which turnover affects species' roles --as defined based on their participation in different motifs positions-- in a series of temporally replicated plant-pollinator networks from high-Arctic Zackenberg, Greenland. We observed substantial turnover in the plant and...

Data from: Cryptic speciation in the field vole: a multilocus approach confirms three highly divergent lineages in Eurasia

Joana Paupério, Jeremy S. Herman, José Melo-Ferreira, Maarit Jaarola, Paulo C. Alves & Jeremy B. Searle
Species are generally described from morphological features, but there is growing recognition of sister forms that show substantial genetic differentiation without obvious morphological variation and may therefore be considered ‘cryptic species’. Here, we investigate the field vole (Microtus agrestis), a Eurasian mammal with little apparent morphological differentiation but which, on the basis of previous sex-linked nuclear and mitochondrial DNA (mtDNA) analyses, is subdivided into a northern and a southern lineage, sufficiently divergent that they may...

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: Deleterious mutations show increasing negative effects with age in Drosophila melanogaster

Martin Brengdahl, Christopher M. Kimber, Phoebe Elias, Josephine Thompson & Urban Friberg
Background In order for ageing to evolve in response to a declining strength of selection with age, a genetic architecture that allows for mutations with age-specific effects on organismal performance is required. Our understanding of how selective effects of individual mutations are distributed across ages is however poor. Established evolutionary theories assume that mutations causing ageing have negative late-life effects, coupled to either positive or neutral effects early in life. New theory now suggests evolution...

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  • Linköping University
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  • James Hutton Institute
  • University of Exeter