7 Works

Data from: Reproductive behaviour indicates specificity in resource use: phylogenetic examples from temperate and tropical insects

Sille Holm, Juhan Javoiš, Erki Õunap, Robert B. Davis, Ants Kaasik, Freerk Molleman, Tõnis Tasane & Toomas Tammaru
Specificity (= the degree of ecological specialisation) is one of the fundamental concepts of the science of ecology. Ambiguities on how to define and measure specificity have however complicated respective research efforts. Here we propose that, in insects, a behavioural trait –adult oviposition latency in captivity without a favourable host plant – correlates with a species’ specificity in larval host use. In the absence of a suitable host, monophagous insects are expected to wait for...

Data from: Structural controls on photosynthetic capacity through juvenile-to-adult transition and needle aging in Mediterranean pines

Vivian Kuusk, Ülo Niinemets & Fernando Valladares
1. Needle photosynthetic potentials strongly vary among primary (juvenile) and secondary (adult) needles (heteroblasty) in Pinus species, but there is limited understanding of the underlying structural, diffusional and chemical controls. 2. We studied differences in needle photosynthetic characteristics among current-year juvenile and adult needles and among different-aged adult needles in Mediterranean pines Pinus halepensis Mill., P. pinea L. and P. nigra J. F. Arnold subsp. salzmannii (Dunal) Franco, hypothesizing that needle anatomical modifications upon juvenile-to-adult...

Data from: Weak and inconsistent associations between melanic darkness and fitness related traits in an insect

Siiri-Lii Sandre, Tanel Kaart, Nathan Morehouse & Toomas Tammaru
The idea that the fitness value of body colouration may be affected by biochemically mediated trade-offs has received much research attention. For example, melanisation is believed to interact with other fitness-related traits via competition for substrates, costs associated with the synthesis of melanin, or pleiotropic effects of the involved genes. However, genetic correlations between colouration and fitness-related traits remain poorly understood. Here we present a quantitative genetic study of a colouration trait correlated to melanin-based...

Data from: Drivers of vegetative dormancy across herbaceous perennial plant species

Richard P. Shefferson, Tiiu Kull, Michael J. Hutchings, Marc-André Selosse, Hans Jacquemyn, Kimberly M. Kellett, Eric S. Menges, Richard B. Primack, Juha Tuomi, Kirsi Alahuhta, Sonja Hurskainen, Helen M. Alexander, Derek S. Anderson, Rein Brys, Emilia Brzosko, Slavomir Dostálik, Katharine Gregg, Zdeněk Ipser, Anne Jäkäläniemi, Jana Jersáková, W. Dean Kettle, Melissa K. McCormick, Ana Mendoza, Michael T. Miller, Asbjørn Moen … & Dennis F. Whigham
Vegetative dormancy, that is the temporary absence of aboveground growth for ≥ 1 year, is paradoxical, because plants cannot photosynthesise or flower during dormant periods. We test ecological and evolutionary hypotheses for its widespread persistence. We show that dormancy has evolved numerous times. Most species displaying dormancy exhibit life‐history costs of sprouting, and of dormancy. Short‐lived and mycoheterotrophic species have higher proportions of dormant plants than long‐lived species and species with other nutritional modes. Foliage...

Data from: High genotypic diversity and strong spatial structure in populations of Trifolium alpestre with low seed production

Karin Kaljund, Malle Leht & Vello Jaaska
The studies on clonal plant populations indicate that the proportion between clonal and sexual reproduction may be highly variable, depending on the biological characteristics of species and the ecological conditions of habitats. We focused on the genotypic diversity of Trifolium alpestre populations in Estonia. We assayed the genetic diversity, spatial genotypic structure and diversity with the use of allozyme markers. Populations revealed high levels of genotypic diversity and showed strong spatial structure of MLGs. The...

Data from: Age-specific patterns of maternal investment in common gull egg yolk

Janek Urvik, Kalev Rattiste, Mathieu Giraudeau, Monika Okuliarova, Peeter Horak & Tuul Sepp
While the general patterns of age-specific changes in reproductive success are quite well established in long-lived animals, we still do not know if allocation patterns of maternally-transmitted compounds are related to maternal age. We measured yolk testosterone, carotenoids and vitamins A and E levels in a population of known-aged common gulls (Larus canus) and found an age-specific pattern in yolk lutein and vitamin A concentrations. Middle-aged mothers allocated more of these substances to yolk compared...

Data from: Association mapping reveals candidate loci for resistance and anemic response to an emerging temperature-driven parasitic disease in a wild salmonid fish

Freed Ahmad, Paul Debes, Gemma Palomar & Anti Vasemägi
Even though parasitic infections are often costly or deadly for the host, we know very little which genes influence parasite susceptibility and disease severity. Proliferative kidney disease (PKD) is an emerging and, at elevated water temperatures, potentially deadly disease of salmonid fishes that is caused by the myxozoan parasite Tetracapsuloides bryosalmonae. By screening > 7.6 K SNPs in 255 wild brown trout (Salmo trutta) and combining association mapping and random forest approaches, we identified several...

Registration Year

  • 2018
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Resource Types

  • Dataset
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Affiliations

  • Estonian University of Life Sciences
    7
  • University of Tartu
    3
  • University of Turku
    2
  • University of Kansas
    1
  • University of Oviedo
    1
  • University of Sussex
    1
  • Research Institute for Nature and Forest
    1
  • University of Georgia
    1
  • University of Cincinnati
    1
  • Estonian Academy of Sciences
    1