27 Works

Data from: Sibship effects on dispersal behaviour in a preindustrial human population

Aïda Nitsch, Virpi Lummaa & Charlotte Faurie
Understanding dispersal behaviour and its determinants is critical for studies on life-history maximizing strategies. Although many studies have investigated the causes of dispersal, few have focused on the importance of sibship, despite that sibling interactions are predicted to lead to intrafamilial differences in dispersal patterns. Using a large demographic data set from pre-industrial Finland (n = 9000), we tested whether the sex-specific probability of dispersal depended on the presence of same-sex or opposite-sex elder siblings...

Data from: Parasite infection and decreased thermal tolerance: impact of proliferative kidney disease (PKD) on a wild salmonid fish in the context of climate change

Matthieu Bruneaux, Marko Visse, Riho Gross, Lilian Pukk, Lauri Saks & Anti Vasemägi
Parasites and pathogens can have an important effect on their host's thermal resistance. The impact of parasite infection on host physiological performances has traditionally been studied in controlled laboratory conditions, and much less is known about its actual effects in wild populations. Nonetheless, such knowledge is critical when assessing the effect of climate change on the future survival of the host. Tetracapsuloides bryosalmonae is a myxozoan endoparasite causing proliferative kidney disease (PKD) in salmonids. Infection...

Data from: Genes that affect Atlantic salmon growth in hatchery do not have the same effect in the wild

Anti Vasemägi, Siim Kahar & Mikhail Y. Ozerov
Dissecting the genetic mechanisms of phenotypic traits that influence fitness in diverse environments provides the important first step towards understanding the robustness of the observed genotype–phenotype associations, the role of genotype-by-environment interaction (GEI) shaping fitness trade-offs and maintaining genetic variation of quantitative traits. However, the molecular basis of complex traits in vertebrates has rarely, if ever, been studied simultaneously in natural and controlled laboratory environments. To evaluate whether the same genomic regions affect the growth...

Data from: Predator encounters have spatially extensive impacts on parental behaviour in a breeding bird community

Kadri Moks, Vallo Tilgar, Robert L. Thomson, Sara Calhim, Pauliina E. Järvistö, Wiebke Schuett, William Velmala & Toni Laaksonen
Predation risk has negative indirect effects on prey fitness, partly mediated through changes in behaviour. Evidence that individuals gather social information from other members of the population suggests that events in a community may impact the behaviour of distant individuals. However, spatially wide-ranging impacts on individual behaviour caused by a predator encounter elsewhere in a community have not been documented before. We investigated the effect of a predator encounter (hawk model presented at a focal...

Data from: Altered trait variability in response to size-selective mortality

Silva Uusi-Heikkilä, Kai Lindström, Noora Parre, Robert Arlinghaus, Josep Alós & Anna Kuparinen
Changes in trait variability owing to size-selective harvesting have received little attention in comparison with changes in mean trait values, perhaps because of the expectation that phenotypic variability should generally be eroded by directional selection typical for fishing and hunting. We show, however, that directional selection, in particular for large body size, leads to increased body-size variation in experimentally harvested zebrafish (Danio rerio) populations exposed to two alternative feeding environments: ad libitum and temporarily restricted...

Data from: From population genomics to conservation and management: a workflow for targeted analysis of markers identified using genome-wide approaches in Atlantic salmon Salmo salar

Tutku Aykanat, Meri Lindqvist, Victoria L. Pritchard & Craig R. Primmer
A genotyping assay for the Ion Torrent Ion PGM platform was developed for fast and cost-effective targeted genotyping of key single nucleotide polymorphisms (SNPs) earlier identified using a genome-wide SNP array in Atlantic salmon Salmo salar. The method comprised a simple primer design step for multiplex-polymerase chain reaction (PCR), followed by two rounds of Ion Torrent Ion PGM sequencing to empirically evaluate marker efficiency in large multiplexes and to optimise or exclude them when necessary....

Data from: Constrained evolution of the sex comb in Drosophila simulans

Manar S. Maraqa, Robert Griffin, Manmohan D. Sharma, Alastair J. Wilson, John Hunt, David J. Hosken & Clarissa M. House
Male fitness is dependent on sexual traits that influence mate acquisition (pre-copulatory sexual selection) and paternity (post-copulatory sexual selection), and while many studies have documented the form of selection in one or the other of these arenas, fewer have done it for both. Nonetheless, it appears that the dominant form of sexual selection is directional, although theoretically, populations should converge on peaks in the fitness surface, where selection is stabilizing. Many factors, however, can prevent...

Data from: SNPs to discriminate different classes of hybrid between wild Atlantic salmon and aquaculture escapees

Victoria L. Pritchard, Jaakko Erkinaro, Matthew P. Kent, Eero Niemelä, Panu Orell, Sigbjørn Lien & Craig R. Primmer
Many wild Atlantic salmon (Salmo salar) populations are threatened by introgressive hybridization from domesticated fish that have escaped from aquaculture facilities. A detailed understanding of the hybridization dynamics between wild salmon and aquaculture escapees requires discrimination of different hybrid classes, however markers currently available to discriminate the two types of parental genome have limited power to do this. Using a high-density Atlantic salmon SNP array in combination with pooled-sample allelotyping and an Fst outlier approach,...

Data from: Spatiotemporal variation in local adaptation of a specialist insect herbivore to its long-lived host plant

Aino Kalske, Roosa Leimu, J.F. Scheepens, Pia Mutikainen & J. F. Scheepens
Local adaptation of interacting species to one another indicates geographically variable reciprocal selection. This process of adaptation is central in the organization and maintenance of genetic variation across populations. Given that the strength of selection and responses to it often vary in time and space, the strength of local adaptation should in theory vary between generations and among populations. However, such spatiotemporal variation has rarely been explicitly demonstrated in nature and local adaptation is commonly...

Data from: Morphological and taxonomic demarcation of Brachionus asplanchnoidis Charin within the Brachionus plicatilis cryptic species complex (Rotifera, Monogononta)

Evangelia Michaloudi, Scott Mills, Spiros Papakostas, Claus-Peter Stelzer, Alexander Triantafyllidis, Ilias Kappas, Kalliopi Vasileiadou, Konstantinos Proios & Theodore John Abatzopoulos
Three well-defined groups, consisting of 15 species, have recently been ascribed to organisms historically identified as the Brachionus plicatilis species complex. One of these groups, the Large-clade is composed of two named species (Brachionus plicatilis s.s. and Brachionus manjavacas) and two species identifiers (B. 'Nevada' and B. 'Austria'). B. 'Austria' has been confirmed to be B. asplanchnoidis. As no type specimen exists for this species, and the original taxonomic description is lacking in detail, we...

Data from: Diversity and linkage disequilibrium in farmed Tasmanian Atlantic salmon

James W. Kijas, Nick Elliot, Peter Kube, Bradley Evans, Natasha Botwright, Harry King, Craig R. Primmer, Klara Verbyla & J. Kijas
Farmed Atlantic salmon (Salmo salar) is a globally important production species, including in Australia where breeding and selection has been in progress since the 1960s. The recent development of SNP genotyping platforms means genome-wide association and genomic prediction can now be implemented to speed genetic gain. As a precursor, this study collected genotypes at 218 132 SNPs in 777 fish from a Tasmanian breeding population to assess levels of genetic diversity, the strength of linkage...

Data from: Autosomal and X linked additive genetic variation for lifespan and aging: comparisons within and between the sexes in Drosophila melanogaster

Robert M. Griffin, Holger Schielzeth & Urban Friberg
Theory makes several predictions concerning differences in genetic variation between the X chromosome and the autosomes due to male X hemizygosity. The X chromosome should i) typically show relatively less standing genetic variation than the autosomes, ii) exhibit more variation in males compared to females because of dosage compensation, and iii) potentially be enriched with sex-specific genetic variation. Here we address each of these predictions for lifespan and aging in Drosophila melanogaster. To achieve unbiased...

Data from: Food supplementation and predation risk in harsh climate: interactive effects on abundance and body condition of tit species

Chiara Morosinotto, Alexandre Villers, Rauno Varjonen & Erkki Korpimäki
Food availability and predation risk can have drastic impacts on animal behaviour and populations. The tradeoff between foraging and predator avoidance is crucial for animal survival and will strongly affect individual body mass, since large fat reserves are beneficial to reduce starvation but may increase predation risk. However, two-factor experiments simultaneously investigating the interactive effects of food and predation risk, are still rare. We studied the effects of food supplementation and natural predation risk imposed...

Data from: Striking phenotypic variation yet low genetic differentiation in sympatric lake trout (Salvelinus namaycush)

Kia Marin, Andrew Coon, Robert Carson, Paul V. Debes & Dylan J. Fraser
The study of population differentiation in the context of ecological speciation is commonly assessed using populations with obvious discreteness. Fewer studies have examined diversifying populations with occasional adaptive variation and minor reproductive isolation, so factors impeding or facilitating the progress of early stage differentiation are less understood. We detected non-random genetic structuring in lake trout (Salvelinus namaycush) inhabiting a large, pristine, postglacial lake (Mistassini Lake, Canada), with up to five discernible genetic clusters having distinctions...

Data from: Is telomere length a molecular marker of past thermal stress in wild fish?

Paul V. Debes, Marko Visse, Bineet Panda, Petteri Ilmonen & Anti Vasemägi
Telomeres protect eukaryotic chromosomes; variation in telomere length has been linked (primarily in homoeothermic animals) to variation in stress, cellular ageing and disease risk. Moreover, telomeres have been suggested to function as biomarker for quantifying past environmental stress, but studies in wild animals remain rare. Environmental stress, such as extreme environmental temperatures in poikilothermic animals, may result in oxidative stress that accelerates telomere attrition. However, growth, which may depend on temperature, can also contribute to...

Data from: What you need is what you eat? Prey selection by the bat Myotis daubentonii

Eero J. Vesterinen, Lasse Ruokolainen, Niklas Wahlberg, Carlos Peña, Tomas Roslin, Veronika N. Laine, Ville Vasko, Ilari E. Sääksjärvi, Kai Norrdahl & Thomas M. Lilley
Optimal foraging theory predicts that predators are selective when faced with abundant prey, but become less picky when prey gets sparse. Insectivorous bats in temperate regions are faced with the challenge of building up fat reserves vital for hibernation during a period of decreasing arthropod abundances. According to optimal foraging theory, prehibernating bats should adopt a less selective feeding behaviour – yet empirical studies have revealed many apparently generalized species to be composed of specialist...

Data from: Maternal transfer of androgens in eggs is affected by food supplementation but not by predation risk

Chiara Morosinotto, Robert L. Thomson, Suvi Ruuskanen, Erkki Korpimäki, Esa Lehikoinen, Erich Möstl & Toni Laaksonen
Mothers may affect the future success of their offspring by varying allocation to eggs and embryos. Allocation may be adaptive based on the environmental conditions perceived during early breeding. We investigated the effects of food supplementation and predation risk on yolk hormone transfer in the pied flycatcher Ficedula hypoleuca. In a food supplementation experiment, females were food-supplemented prior to and during egg-laying and androgen concentrations were measured throughout the laying order. Predation risk was investigated...

Data from: Genomewide introgressive hybridization patterns in wild Atlantic salmon influenced by inadvertent gene flow from hatchery releases

Mikhail Y. Ozerov, Riho Gross, Matthieu Bruneaux, Juha-Pekka Vähä, Oksana Burimski, Lilian Pukk & Anti Vasemägi
Many salmonid fish populations are threatened by genetic homogenization, primarily due to introgressive hybridization with hatchery-reared conspecifics. By applying genomewide analysis using two molecular marker types (1986 SNPs and 17 microsatellites), we assessed the genetic impacts of inadvertent gene flow via straying from hatchery releases on wild populations of Atlantic salmon in the Gulf of Finland, Baltic Sea, over 16 years (1996–2012). Both microsatellites and SNPs revealed congruent population genetic structuring, indicating that introgression changed...

Data from: Diagnosing depression in chronic pain patients: DSM-IV Major Depressive Disorder vs. Beck Depression Inventory (BDI)

Peter Knaster, Ann-Mari Estlander, Jaakko Kaprio, Hasse Karlsson & Eija Kalso
Background: Diagnosing depression in chronic pain is challenging due to overlapping somatic symptoms. In questionnaires, such as the Beck Depression Inventory (BDI), responses may be influenced more by pain than by the severity of depression. In addition, previous studies have suggested that symptoms of negative self-image, a key element in depression, are uncommon in chronic pain-related depression. The object of this study is to assess the relationship of the somatic and cognitive-emotional items of BDI...

Data from: Heritability, environmental effects, and genetic and phenotypic correlations of oxidative stress resistance-related enzyme activities during early life stages in Atlantic salmon

Siim Kahar, Paul V. Debes, Kristina A. M. Vuori, Juha-Pekka Vähä & Anti Vasemägi
Oxidative stress (OS) may pose important physiological constraints on individuals, affecting trade-offs between growth and reproduction or ageing and survival. Despite such evolutionary and ecological importance, the results from studies on the magnitude of individual variation in OS resistance and the underlying causes of this variation such as genetic, environmental, and maternal origins, remain inconclusive. Using a high throughput methodology, we investigated the activity levels in three OS resistance-related enzymes (superoxide dismutase, SOD; glutathione reductase,...

Data from: Heritable variation in maternally-derived yolk androgens, thyroid hormones and immune factors

Suvi Ruuskanen, Phillip Gienapp, Ton G.G Groothuis, Sonja V. Schaper, Veerle M. Darras, Cheyenne Pereira, Bonnie De Vries & Marcel E. Visser
Maternal reproductive investment can critically influence offspring phenotype, and thus these maternal effects are expected to be under strong natural selection. Knowledge on the extent of heritable variation in the physiological mechanisms underlying maternal effects is however limited. In birds, resource allocation to eggs is a key mechanism for mothers to affect their offspring and different components of the egg may or may not be independently adjusted. We studied the heritability of egg components and...

Data from: How big is it really? Assessing the efficacy of indirect estimates of body size in Asian elephants

Simon N. Chapman, Hannah S. Mumby, Jennie A.H. Crawley, Khyne U. Mar, Win Htut, Aung Thura Soe, Htoo Htoo Aung, Virpi Lummaa & Jennie A. H. Crawley
Information on an organism’s body size is pivotal in understanding its life history and fitness, as well as helping inform conservation measures. However, for many species, particularly large-bodied wild animals, taking accurate body size measurements can be a challenge. Various means to estimate body size have been employed, from more direct methods such as using photogrammetry to obtain height or length measurements, to indirect prediction of weight using other body morphometrics or even the size...

Data from: Phylogeny affects host's weight, immune response and parasitism in damselflies and dragonflies

Jaakko J. Ilvonen & Jukka Suhonen
Host–parasite interactions are an intriguing part of ecology, and understanding how hosts are able to withstand parasitic attacks, e.g. by allocating resources to immune defence, is important. Damselflies and dragonflies show a variety of parasitism patterns, but large-scale comparative immune defence studies are rare, and it is difficult to say what the interplay is between their immune defence and parasitism. The aim of this study was to find whether there are differences in immune response...

Data from: Wood warblers copy settlement decisions of poor quality conspecifics: support for the tradeoff between the benefit of social information use and competition avoidance

Jakub Szymkowiak, Robert L. Thomson & Lechosław Kuczyński
Social information use in songbird habitat selection commonly involves a conspecific attraction strategy. Individuals copy the breeding-site choices of conspecifics, that is, bias their own settlement decisions towards sites (tracts of spatially limited habitat with similar structure) already occupied by others. In order to be adaptive, social information use has to be discriminative. Especially the decisions of good quality individuals, i.e. measuring high at observable fitness correlates, should be copied more frequently than those of...

Data from: Hybrid dysfunction expressed as elevated metabolic rate in male Ficedula flycatchers

S. Eryn McFarlane, Päivi Sirkiä, Murielle Ålund, Anna Qvarnstrom & Päivi M. Sirkiä
Studies of ecological speciation are often biased towards extrinsic sources of selection against hybrids, resulting from intermediate hybrid morphology, but the knowledge of how genetic incompatibilities accumulate over time under natural conditions is limited. Here we focus on a physiological trait, metabolic rate, which is central to life history strategies and thermoregulation but is also likely to be sensitive to mismatched mitonuclear interactions. We measured the resting metabolic rate of male collared, and pied flycatchers...

Registration Year

  • 2016
    27

Resource Types

  • Dataset
    27

Affiliations

  • University of Turku
    27
  • University of Helsinki
    5
  • Estonian University of Life Sciences
    4
  • Nederlands Instituut voor Ecologie
    3
  • University of Cape Town
    3
  • University of Tartu
    3
  • University of Hamburg
    2
  • French National Centre for Scientific Research
    2
  • Bucknell University
    1
  • Lund University
    1