6 Works

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: A small badge of longevity: opposing survival selection on the size of white and black wing markings

Tuul Sepp, Kalev Rattiste, Lauri Saks, Richard Meitern, Janek Urvik, Ants Kaasik & Peeter Hõrak
According to handicap principle, exaggerated ornamental traits are supposed to exert costs on their bearers. However, there is much less theoretical and practical consensus about whether and under which conditions ornament expression should positively correlate with survival. We measured age-related variation and survival selection on the size of white wing patches and black wing tips in a long-lived monogamous seabird, the common gull Larus canus. Males had larger white patches than females but patch size...

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: Outlier loci detect intraspecific biodiversity amongst spring and autumn spawning herring across local scales

Riho Gross, Dorte Bekkevold, Sarah J. Helyar, Timo Arula & Henn Ojaveer
Herring, Clupea harengus, is one of the ecologically and commercially most important species in European northern seas, where two distinct ecotypes have been described based on spawning time; spring and autumn. To date, it is unknown if these spring and autumn spawning herring constitute genetically distinct units. We assessed levels of genetic divergence between spring and autumn spawning herring in the Baltic Sea using two types of DNA markers, microsatellites and Single Nucleotide Polymorphisms, and...

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: 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...

Registration Year

  • 2016
    6

Resource Types

  • Dataset
    6

Affiliations

  • Estonian University of Life Sciences
    6
  • University of Tartu
    4
  • University of Turku
    4
  • Queen's University Belfast
    1
  • Daugavpils University
    1
  • Technical University of Denmark
    1