75 Works

A brain and a head for a different habitat: size variation in four morphs of Arctic charr (Salvelinus alpinus (L.)) in a deep oligotrophic lake

Ana Peris, Olivier Devineau, Kim Præbel, Kimmo K. Kahilainen & Kjartan Østbye
Adaptive radiation is the diversification of species to different ecological niches and has repeatedly occurred in different salmonid fish of postglacial lakes. In Lake Tinnsjøen, one of the largest and deepest lakes in Norway, the salmonid fish, Arctic charr (Salvelinus alpinus (L.)), has likely radiated within 9700 years after deglaciation into ecologically and genetically segregated Piscivore, Planktivore, Dwarf and Abyssal morphs in the pelagial, littoral, shallow-moderate profundal and deep-profundal habitats. We compared trait variation in...

Testing trait plasticity over the range of spectral composition of sunlight in forb species differing in shade tolerance

Qing-Wei Wang, T. Matthew Robson, Marta Pieristè, Michio Oguro, Riichi Oguchi, Yoshinori Murai & Hiroko Kurokawa
Although sunlight is essential for plant growth and development, the relative importance of each spectral region in shaping functional traits is poorly understood, particularly in dynamic light environments such as forest ecosystems. We examined responses of 25 functional traits from groups of 11 shade-intolerant and 12 understorey shade-tolerant forb species grown outdoors under five filter treatments differing in spectral transmittance: (1) transmitting c 95% of solar radiation; (2) attenuating ultraviolet-B (UV-B); (3) attenuating all UV;...

Data from: Shifts in timing and duration of breeding for 73 boreal bird species over four decades

Maria Hällfors, Laura Antão, Malcolm Itter, Aleksi Lehikoinen, Tanja Lindholm, Tomas Roslin & Marjo Saastamoinen
Breeding timed to match optimal resource abundance is vital for the successful reproduction of species, and breeding is therefore sensitive to environmental cues. As the timing of breeding shifts with a changing climate, this may not only affect the onset of breeding, but also its termination, and thus the length of the breeding period. We use an extensive dataset of over 820K nesting records of 73 bird species across the boreal region in Finland to...

Data from: Understanding sentiment of national park visitors from social media data

Anna Hausmann, Tuuli Toivonen, Christoph Fink, Vuokko Heikinheimo, Ritwik Kulkarni, Henrikki Tenkanen & Enrico Di Minin
National parks are key for conserving biodiversity and supporting people´s well-being. However, anthropogenic pressures challenge the existence of national parks and their conservation effectiveness. Therefore, it is crucial to assess how people perceive national parks in order to enhance socio-political support for conservation. User-generated data shared by visitors on social media provide opportunities to understand how people perceive (e.g. preferences, feelings, opinions) national parks during nature-based recreational experiences. In this study, we applied methods from...

The roles of climate, geography and natural selection as drivers of genetic and phenotypic differentiation in a widespread amphibian Hyla annectans (Anura: Hylidae)

Shichao Wei, Zitong Li, Paolo Momigliano, Chao Fu, Hua Wu & Juha Merilä
The role of geological events and Pleistocene climatic fluctuations as drivers of current patterns of genetic variation in extant species has been a topic of continued interest among evolutionary biologists. Nevertheless, comprehensive studies of widely distributed species are still rare, especially from Asia. Using geographically extensive sampling of many individuals and a large number of nuclear single nucleotide polymorphisms (SNPs), we studied the phylogeography and historical demography of Hyla annectans populations in southern China. Thirty-five...

Supplementary material for: Exploring the impact of unstable terminals on branch support values in paleontological data

Jorge R Flores, Samuli Lehtonen & Jaakko Hyvönen
The dataset consists of a PDF file and two plain-text TNT scripts (*.run files). The PDF includes supporting Figures for the additional analyses conducted by Flores et al. on paleontological datasets. The TNT scripts conduct two complementary sets of analyses: (a) evaluation of taxon instability relative to the incompleteness ("mc.run"), and (b) changes in branch support values after pruning unstable taxa ("avmc.run"). To properly run these files in TNT, the name of the matrix files...

Fungal sporocarps house diverse and host-specific communities of fungicolous fungi

Sundy Maurice, Gontran Arnault, Jenni Norden, Synnøve Smebye Botnen, Otto Miettinen & Håvard Kauserud
Sporocarps (fruit bodies) are the sexual reproductive stage in the life cycle of many fungi. They are highly nutritious and consequently vulnerable to grazing by birds and small mammals, and invertebrates, and can be infected by microbial and fungal parasites and pathogens. The complexity of communities thriving inside sporocarps is largely unknown. In this study, we revealed the diversity, taxonomic composition and host-preference of fungicolous fungi (i.e fungi that feed on other fungi) in sporocarps....

Data from: Translocation of an arctic seashore plant reveals signs of maladaptation to altered climatic conditions

Maria Hällfors, Susanna Lehvävirta, Tone Aandahl, Iida-Maria Lehtimäki, Lars Ola Nilsson, Anna-Liisa Ruotsalainen, Leif Schulman & Marko Hyvärinen
Ongoing anthropogenic climate change alters the local climatic conditions to which species may be adapted. Information on species’ climatic requirements and their intraspecific variation is necessary for predicting the effects of climate change on biodiversity. We used a climatic gradient to test whether populations of two allopatric varieties of an arctic seashore herb (Primula nutans ssp. finmarchica) show adaptation to their local climates and how a future warmer climate may affect them. Our experimental set-up...

Foraging behaviour alters with social environment in a juvenile songbird

Victoria Franks, John Ewen, Mhairi McCready & Rose Thorogood
Early independence from parents is a critical period where social information acquired vertically may become outdated, or conflict with new information. However, across natural populations it is unclear if newly-independent young persist in using information from parents, or if group-level effects of conformity override previous behaviours. Here we test if wild juvenile hihi (Notiomystis cincta, a New Zealand passerine) retain a foraging behaviour from parents, or if they change in response to the behaviour of...

Drosophila suzukii wing spot size is robust to developmental temperature

Ceferino Varón González, Antoine Fraimout & Vincent Debat
Phenotypic plasticity is an important mechanism allowing adaptation to new environments and as such it has been suggested to facilitate biological invasions. Under this assumption, invasive populations are predicted to exhibit stronger plastic responses than native populations. Drosophila suzukii is an invasive species whose males harbor a spot on the wing tip. In this study, by manipulating developmental temperature, we compare the phenotypic plasticity of wing spot size of two invasive populations with that of...

Limited dispersal and an unexpected aggression pattern in a native supercolonial ant

Sanja Hakala, Mats Ittonen, Perttu Seppä & Heikki Helanterä
Understanding how social groups function requires studies on how individuals move across the landscape and interact with each other. Ant supercolonies are extreme cooperative units that may consist of thousands of interconnected nests, and their individuals cooperate over large spatial scales. However, the inner structure of suggested supercolonial (or unicolonial) societies has rarely been extensively studied using both genetic and behavioral analyses. We describe a dense supercolony-like aggregation of more than 1300 nests of the...

Data from: Genuine cross-frequency coupling networks in human resting-state electrophysiological recordings

Felix Siebenhühner, Sheng H Wang, Gabriele Arnulfo, Lino Nobili, J Matias Palva, Satu Palva & Anna Lampinen
Phase synchronization of neuronal oscillations in specific frequency bands coordinates anatomically distributed neuronal processing and communication. Typically, oscillations and synchronization take place concurrently in many distinct frequencies, which serve separate computational roles in cognitive functions. While within-frequency phase synchronization has been studied extensively, less is known about the mechanisms that govern neuronal processing distributed across frequencies and brain regions. Such integration of processing between frequencies could be achieved via cross-frequency coupling (CFC), either by phase-amplitude...

The signal detection problem of aposematic prey revisited: integrating prior social and personal experience

Rose Thorogood & Liisa Hämäläinen
Data collected during three separate experiments using the "novel world" (Alatalo & Mappes, Nature 1996) approach to test how social information changes predator discrimination of novel aposematic prey from a cryptic palatable alternative. Experiments were conducted with great tits (Parus major), captured from the wild and released afterwards, at the University of Jyväskylä Research Station, Konnevesi, Finland (62.6° N, 26.3° E) during three winters (2013-2014, 2016-2017, 2017-2018). Social information was provided by video playback of...

Evolution in interacting species alters predator life history traits, behavior and morphology in experimental microbial communities

Johannes Cairns, Felix Moerman, Emanuel Fronhofer, Florian Altermatt & Teppo Hiltunen
Predator-prey interactions are key for the dynamics of many ecosystems. An increasing body of evidence suggests that rapid evolution and co-evolution can alter these interactions, with important ecological implications, by acting on traits determining fitness, including reproduction, anti-predatory defense and foraging efficiency. However, most studies to date have focused only on evolution in the prey species, and the predator traits in (co-)evolving systems remain poorly understood. Here we investigated changes in predator traits after ~600...

A metacommunity approach for detecting species influenced by mass effect

Thibault Leboucher, Juliette Tison-Rosebery, William R. Budnick, Aurélien Jamoneau, Wim Vyverman, Janne Soininen, Sébastien Boutry & Sophia I. Passy
1. Mass effect, allowing species to persist in unfavourable habitats, and dispersal limitation, preventing species from reaching favourable habitats, are the two major dispersal processes. While dispersal limitation can be detected by experimental or modeling techniques, mass effect is more challenging to evaluate, which hampers our ability to disentangle the influence of the environment vs. dispersal on species distribution. This is undesirable for biomonitoring programs built on known species-environment relationships. 2. We developed an approach...

Genetic population structure constrains local adaptation in sticklebacks

Petri Kemppainen
Repeated and independent adaptation to specific environmental conditions from standing genetic variation is common. However, if genetic variation is limited, the evolution of similar locally adapted traits may be restricted to genetically different and potentially less optimal solutions or prevented from happening altogether. Using a quantitative trait locus (QTL) mapping approach, we identified the genomic regions responsible for the repeated pelvic reduction (PR) in three crosses between nine-spined stickleback populations expressing full and reduced pelvic...

Data from: Reproduction under light pollution: maladaptive response to spatial variation in artificial light in a glow-worm

Christina Elgert, Juhani Hopkins, Arja Kaitala & Ulrika Candolin
The amount of artificial light at night is growing worldwide, impacting the behaviour of nocturnal organisms. Yet, we know little about the consequences of these behavioural responses for individual fitness and population viability. We investigated if females of the common glow-worm Lampyris noctiluca – which glow in the night to attract males – mitigate negative effects of artificial light on mate attraction by adjusting the timing and location of glowing to spatial variation in light...

Data from: Cis-regulatory differences in isoform expression associate with life history strategy variation in Atlantic salmon

Jukka-Pekka Verta, Paul Debes, Nikolai Piavchenko, Annukka Ruokolainen, Outi Ovaskainen, Jacqueline Moustakas-Verho, Seija Tillanen, Noora Parre, Tutku Aykanat, Jaakko Erkinaro & Craig Primmer
A major goal in biology is to understand how evolution shapes variation in individual life histories. Genome-wide association studies have been successful in uncovering genome regions linked with traits underlying life history variation in a range of species. However, lack of functional studies of the discovered genotype-phenotype associations severely restrains our understanding how alternative life history traits evolved and are mediated at the molecular level. Here, we report a cis-regulatory mechanism whereby expression of alternative...

Unstandardized breeding choice grouped by maternal litter

David Arthur Wells, Hazel Nichols, Joseph Hoffman, Michael Cant, Faye Thompson, Harry Marshall & Emma Vitikainen
Banded mongooses play a delicate balancing act between incest and warfare. Some females have to choose between mating with a relative within their own social group or trying to sneakily mate with a male from a rival group during fights between groups. We show that females are more likely to mate with extra-group males when the risk of inbreeding within their group is high, but not all females get this opportunity for extra-group mating.

An ancient and eroded social supergene is widespread across Formica ants

Alan Brelsford, Jessica Purcell, Amaury Avril, Patrick Tran Van, Junxia Zhang, Timothée Brütsch, Liselotte Sundström, Heikki Helanterä & Michel Chapuisat
Supergenes, clusters of tightly linked genes, play a key role in the evolution of complex adaptive variation. While supergenes have been identified in many species, we lack an understanding of their origin, evolution and persistence. Here, we uncover 20-40 MY of evolutionary history of a supergene associated with polymorphic social organization in Formica ants. We show that five Formica species exhibit homologous divergent haplotypes spanning 11 Mbp on chromosome 3. Despite the size of the...

Data from: Ecological speciation in European whitefish is driven by a large‐gaped predator

Gunnar Öhlund, Mats Bodin, Karin Nilsson, Sven-Ola Öhlund, Kenyon Mobley, Alan Hudson, Mikael Peedu, Åke Brännström, Pia Bartels, Kim Præbel, Catherine Hein, Petter Johansson & Göran Englund
Lake‐dwelling fish that form species pairs/flocks characterized by body size divergence are important model systems for speciation research. Although several sources of divergent selection have been identified in these systems, their importance for driving the speciation process remains elusive. A major problem is that in retrospect, we cannot distinguish selection pressures that initiated divergence from those acting later in the process. To address this issue, we studied the initial stages of speciation in European whitefish...

Data for: Microclimate structures communities, predation and herbivory in the High Arctic

Tuomas Kankaanpää, Nerea Abrego, Eero Vesterinen & Tomas Roslin
In a warming world, changes in climate may result in species-level responses as well as changes in community structure through knock-on effects on ecological interactions such as predation and herbivory. Yet, the links between these responses at different levels are still inadequately understood. Assessing how microclimatic conditions affect each of them at local scales provides information essential for understanding the consequences of macroclimatic changes projected in the future. Focusing on the rapidly changing High Arctic,...

Population genomics reveals repeated signals of adaptive divergence in the Atlantic salmon of northeastern Europe

Ksenia Zueva, Jaakko Lumme, Alexey Veselov, Craig Primmer & Victoria Pritchard
Our ability to examine genetic variation across entire genomes have enabled many studies searching for the genetic basis of local adaptation. These studies have identified numerous loci as candidates for differential local selection, however relatively few have examined the overlap among candidate loci identified from independent studies of the same species in different geographic areas or evolutionary lineages. We used an allelotyping approach with a 220K SNP array to characterize the population genetic structure of...

Morphoecological characteristics of grasses used to restore degraded semi-arid African rangelands

Kevin Mganga, Eric Kaindi, Aphaxard Ndathi, Luwieke Bosma, Theophilus Kioko, Nancy Kadenyi, Steven Wambua, Frank Van Steenbergen & Nashon Musimba
Progressive loss of productivity and plant diversity has been a major concern for land managers of global arid and semi-arid rangelands. This is often attributed to heavy grazing by large livestock herds and wildlife leading to land degradation threatening millions of livelihoods that rely on rangeland resources. Consequently, combating land degradation has increasingly become important global agenda. Active restoration technologies such as indigenous grass reseeding has been identified as a viable ecological solution for restoring...

Data from: Multidimensional plasticity in the Glanville fritillary butterfly: larval performance is temperature, host and family specific

Nadja Verspagen, Suvi Ikonen, Marjo Saastamoinen & Erik Van Bergen
Variation in environmental conditions during development can lead to changes in life-history traits with long-lasting effects. Here, we study how variation in temperature and host plant, i.e. the consequences of potential maternal oviposition choices, affects a suite of life-history traits in pre-diapause larvae of the Glanville fritillary butterfly. We focus on offspring survival, larval growth rates and relative fat reserves, and pay specific attention to intraspecific variation in the responses (GxExE). Globally, thermal performance and...

Registration Year

  • 2020

Resource Types

  • Dataset
  • Text
  • Other
  • Software


  • University of Helsinki
  • University of Oulu
  • University of Turku
  • Natural Resources Institute Finland
  • Swedish University of Agricultural Sciences
  • University of Cambridge
  • The Arctic University of Norway
  • Finnish Environment Institute
  • Kristianstad University
  • Technische Universität Braunschweig