194 Works

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: Cuckoo parasitism in a cavity nesting host: near absent egg-rejection in a northern redstart population under heavy apparent (but low effective) brood parasitism

Robert L. Thomson, Jere Tolvanen & Jukka T. Forsman
Brood parasite - host systems continue to offer insights into species coevolution. A notable system is the redstart Phoenicurus phoenicurus parasitized by the “redstart-cuckoo” Cuculus canorus gens. Redstarts are the only regular cuckoo hosts that breed in cavities, which challenges adult cuckoos in egg laying and cuckoo chicks in host eviction. We investigated parasitism in this system and found high overall parasitism rates (31.1% of 360 redstart nests), but also that only 33.1% of parasitism...

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: Finding flies in the mushroom soup: host specificity of fungus-associated communities revisited with a novel molecular method

Janne Koskinen, Tomas Roslin, Tommi Nyman, Nerea Abrego, Craig Michell & Eero J. Vesterinen
Fruiting bodies of fungi constitute an important resource for thousands of other taxa. The structure of these diverse assemblages has traditionally been studied with labour-intensive methods involving cultivation and morphology-based species identification, to which molecular information might offer convenient complements. To overcome challenges in DNA extraction and PCR associated with the complex chemical properties fruiting bodies, we developed a pipeline applicable for extracting amplifiable total DNA from soft fungal samples of any size. Our protocol...

Data from: Construction and characterization of synthetic bacterial community for experimental ecology and evolution

Johannes Cairns, Roosa Jokela, Jenni Hultman, Manu Tamminen, Marko Virta & Teppo Hiltunen
Experimental microbial ecology and evolution have yielded foundational insights into ecological and evolutionary processes using simple microcosm setups and phenotypic assays with one- or two-species model systems. The fields are now increasingly incorporating more complex systems and exploration of the molecular basis of observations. For this purpose, simplified, manageable and well-defined multispecies model systems are required that can be easily investigated using culturing and high-throughput sequencing approaches, bridging the gap between simpler and more complex...

Data from: Interspecific transfer of parasites following a range-shift in Ficedula flycatchers

William Jones, Katarzyna Kulma, Staffan Bensch, Mariusz Cichoń, Anvar Kerimov, Miloš Krist, Toni Laaksonen, Juan Moreno, Pavel Munclinger, Fred Slater, Eszter Szöllősi, Marcel E. Visser, Anna Qvarnström & Fred M. Slater
Human-induced climate change is expected to cause major biotic changes in species distributions and thereby including escalation of novel host-parasite associations. Closely related host species that come into secondary contact are especially likely to exchange parasites and pathogens. Two competing theories, the Enemy Release Hypothesis, where invading hosts escape their original parasites; and the Novel Weapon Hypothesis, where invading hosts bring new parasites that have detrimental effects on native hosts, have been described to predict...

Data from: Generation of a neutral FST baseline for testing local adaptation on gill-raker number within and between European whitefish ecotypes in the Baltic Sea basin

Mikhail Yu Ozerov, Mikael Himberg, Tutku Aykanat, Dmitry S. Sendek, Henry Hägerstrand, Aare Verliin, Teet Krause, Jens Olsson, Craig R. Primmer & Anti Vasemägi
Divergent selection at ecologically important traits is thought to be a major factor driving phenotypic differentiation between populations. To elucidate the role of different evolutionary processes shaping the variation in gill-raker number of European whitefish (Coregonus lavaretus sensu lato) in the Baltic Sea basin, we assessed the relationships between genetic and phenotypic variation among and within three whitefish ecotypes (sea-, river and lake-spawners). To generate expected neutral distribution of FST and to evaluate whether highly...

Data from: Using digital soil maps to infer edaphic affinities of plant species in Amazonia: problems and prospects

Gabriel Massaine Moulatlet, Gabriela Zuquim, Fernando Oliviera Gouvea Figueiredo, Samuli Lehtonen, Thaise Emilio, Kalle Ruokolainen & Hanna Tuomisto
Amazonia combines semi-continental size with difficult access, so both current ranges of species and their ability to cope with environmental change have to be inferred from sparse field data. Although efficient techniques for modeling species distributions on the basis of a small number of species occurrences exist, their success depends on the availability of relevant environmental data layers. Soil data are important in this context, because soil properties have been found to determine plant occurrence...

Data from: Genome-wide meta-analysis of sciatica in Finnish population

Susanna Lemmelä, Svetlana Solovieva, Rahman Shiri, Christian Benner, Markku Heliövaara, Johannes Kettunen, Verneri Anttila, Samuli Ripatti, Markus Perola, Ilkka Seppälä, Markus Juonala, Mika Kähönen, Veikko Salomaa, Jorma Viikari, Olli Raitakari, Terho Lehtimäki, Aarno Palotie, Eira Viikari-Juntula, Kirsti Husgafvel-Pursiainen, Olli T. Raitakari & Eira Viikari-Juntura
Sciatica or the sciatic syndrome is a common and often disabling low back disorder in the working-age population. It has a relatively high heritability but poorly understood molecular mechanisms. The Finnish population is a genetic isolate where small founder population and bottleneck events have led to enrichment of certain rare and low frequency variants. We performed here the first genome-wide association (GWAS) and meta-analysis of sciatica. The meta-analysis was conducted across two GWAS covering 291...

Data from: Varyingly hungry caterpillars: predictive models and foliar chemistry suggest how to eat a rainforest

Simon T. Segar, Martin Volf, Brus Isua, Mentap Sisol, Conor M. Redmond, Margaret E. Rosati, Bradley Gewa, Kenneth Molem, Chris Dahl, Jeremy D. Holloway, Yves Basset, Scott E. Miller, George D. Weiblen, Juha-Pekka Salminen & Vojtech Novotny
A long-term goal in evolutionary ecology is to explain the incredible diversity of insect herbivores and patterns of plant host use in speciose groups like tropical Lepidoptera. Here we used standardised food-web data, multigene phylogenies of both trophic levels and plant chemistry data to model interactions between Lepidoptera larvae (caterpillars) from two lineages (Geometridae and Pyraloidea) and plants in species-rich lowland rainforest in New Guinea. Model parameters were used to make and test blind predictions...

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: Cross-cultural similarity in relationship-specific social touching

Juulia T. Suvilehto, Lauri Nummenmaa, Tokiko Harada, Robin I. M. Dunbar, Riitta Hari, Robert Turner, Norihiro Sadato & Ryo Kitada
Many species use touching for reinforcing social structures, and particularly non-human primates use social grooming for managing their social networks. However, it is still unclear how social touch contributes to maintenance and reinforcement of human social networks. Human studies in Western cultures suggest that the body locations where touch is allowed are associated with the strength of the emotional bond between the person touched and the toucher. However, it is unknown to what extent this...

Data from: Tail color signals performance in blue tit nestlings

Barbara Class, Edward Kluen & Jon E. Brommer
Indirect sexual selection arises when reproductive individuals choose their mates based on heritable ornaments that are genetically correlated to fitness. Evidence for genetic associations between ornamental coloration and fitness remain scarce. In this study we investigate the quantitative genetic relationship between different aspects of tail structural coloration (brightness, hue and UV chroma) and performance (cell mediated immunity, body mass and wing length) in blue tit (Cyanistes caeruleus) nestlings. In line with previous studies, we find...

Data from: Long-term trends in wild-capture and population dynamics point to an uncertain future for captive elephants.

John Jackson, Dylan Z. Childs, Khyne Mar, Win Htut & Virpi Lummaa
Maintaining sustainable populations in captivity without supplementation through wild-capture is a major challenge in conservation that zoos and aquaria are working towards. However, the capture of wild animals continues for many purposes where conservation is not the primary focus. Wild-capture hinders long-term conservation goals by reducing remaining wild populations. Furthermore, the direct and long-term indirect consequences of wild-capture for captive population viability are rarely addressed using longitudinal data. We explored the implications of changes in...

Data from: Long-term test–retest reliability of striatal and extrastriatal dopamine D2/3 receptor binding: study with [11C]raclopride and high-resolution PET

Kati Alakurtti, Jarkko J Johansson, Juho Joutsa, Matti Laine, Lars Bäckman, Lars Nyberg & Juha O Rinne
We measured the long-term test–retest reliability of [11C]raclopride binding in striatal subregions, the thalamus and the cortex using the bolus-plus-infusion method and a high-resolution positron emission scanner. Seven healthy male volunteers underwent two positron emission tomography (PET) [11C]raclopride assessments, with a 5-week retest interval. D2/3 receptor availability was quantified as binding potential using the simplified reference tissue model. Absolute variability (VAR) and intraclass correlation coefficient (ICC) values indicated very good reproducibility for the striatum and...

Väitöstutkimus J.A. Hollosta

Matti Taneli

Data for: Parasitoids indicate major climate-induced shifts in Arctic communities

Tuomas Kankaanpää, Eero Vesterinen, Bess Hardwick, Niels Martin Martin Schmidt, Tommi Andersson, Paul Eric Aspholm, Isabel Barrio, Niklas Beckers, Joël Bêty, Tone Birkemoe, Melissa DeSiervo, Katherine Drotos, Dorothee Ehrich, Olivier Gilg, Vladimir Gilg, Nils Hein, Toke Høye, Kristian Jakobsen, Camille Jodouin, Jesse Jorna, Mikhail Kozlov, Jean-Claude Kresse, Don-Jean Leandri-Breton, Nicolas Lecomte, Maia Olsen … & Tomas Roslin
Climatic impacts are especially pronounced in the Arctic, which as a region is warming twice as fast as the rest of the globe. Here, we investigate how mean climatic conditions and rates of climatic change impact parasitoid insect communities in 16 localities across the Arctic. We focus on parasitoids in a wide-spread habitat, Dryas heathlands, and describe parasitoid community composition in terms of larval host use (i.e. parasitoid use of herbivorous Lepidoptera versus pollinating Diptera)...

Phototactic choices of Drosophila melanogaster

Indrikis Krams, Tatjana Krama, Ronalds Krams, Giedrius Trakimas, Sergejs Popovs, Priit Jõers, Maris Munkevics, Didzis Elferts, Markus Rantala, Janis Makna & Benjamin De Bivort
When organisms' environmental conditions vary unpredictably in time, it can be advantageous for individuals to hedge their phenotypic bets. It has been shown that a bet-hedging strategy underlies the high inter-individual diversity of phototactic choice in Drosophila melanogaster. This study shows that fruit flies from a population living in a boreal and relatively unpredictable climate had more variable phototactic choices than fruit flies from a more stable tropical climate, consistent with bet-hedging theory. We experimentally...

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