33 Works

Data from: Reproductive isolation and patterns of genetic differentiation in a cryptic butterfly species complex

Vlad Dincă, Christer Wiklund, Vladimir A. Lukhtanov, Ullasa Kodandaramaiah, Karin Norén, Leonardo Dapporto, Niklas Wahlberg, Roger Vila & Magne Friberg
Molecular studies of natural populations are often designed to detect and categorize hidden layers of cryptic diversity, and an emerging pattern suggests that cryptic species are more common and more widely distributed than previously thought. However, these studies are often decoupled from ecological and behavioural studies of species divergence. Thus, the mechanisms by which the cryptic diversity is distributed and maintained across large spatial scales are often unknown. In 1988, it was discovered that the...

Data from: Environmental factors influence both abundance and genetic diversity in a widespread bird species

Yang Liu, Simone Webber, Katharine Bowgen, Lucie Schmaltz, Katharine Bradley, Peter Halvarsson, Mohanad Abdelgadir & Michael Griesser
Genetic diversity is one of the key evolutionary variables that correlate with population size, being of critical importance for population viability and the persistence of species. Genetic diversity can also have important ecological consequences within populations, and in turn, ecological factors may drive patterns of genetic diversity. However, the relationship between the genetic diversity of a population and how this interacts with ecological processes has so far only been investigated in a few studies. Here,...

Data from: Sex ratio and density affect sexual selection in a sex-role reversed fish

Tonje Aronsen, Anders Berglund, Kenyon B. Mobley, Irja Ida Ratikainen & Gunilla Rosenqvist
Understanding how demographic processes influence mating systems is important to decode ecological influences on sexual selection in nature. We manipulated sex ratio and density in experimental populations of the sex-role reversed pipefish Syngnathus typhle. We quantified sexual selection using the Bateman gradient (ß′ss), the opportunity for selection (I), and sexual selection (Is), and the maximum standardized sexual selection differential (s′max). We also measured selection on body length using standardized selection differentials (s′) and mating differentials...

Data from: Reliability assessment of null allele detection: inconsistencies between and within different methods

Michal J. Dąbrowski, Malgorzata Pilot, Marcin Kruczyk, Michal Żmihorski, Husen M. Umer & Joanna Gliwicz
Microsatellite loci are widely used in population genetic studies, but the presence of null alleles may lead to biased results. Here, we assessed five methods that indirectly detect null alleles and found large inconsistencies among them. Our analysis was based on 20 microsatellite loci genotyped in a natural population of Microtus oeconomus sampled during 8 years, together with 1200 simulated populations without null alleles, but experiencing bottlenecks of varying duration and intensity, and 120 simulated...

Data from: Interaction rules underlying group decisions in homing pigeons

Benjamin Pettit, Andrea Perna, Dora Biro & David J. T. Sumpter
Travelling in groups gives animals opportunities to share route information by following cues from each other's movement. The outcome of group navigation will depend on how individuals respond to each other within a flock, school, swarm, or herd. Despite the abundance of modelling studies, only recently have researchers developed techniques to determine the interaction rules among real animals. Here we use high-resolution GPS (global positioning system) tracking to study these interactions in pairs of pigeons...

Data from: Origin and demographic history of the endemic Taiwan spruce (Picea morrisonicola)

Sofia Bodare, Michael Stocks, Jeng-Chuann Yang & Martin Lascoux
Taiwan spruce (Picea morrisonicola) is a vulnerable conifer species endemic to the island of Taiwan. A warming climate and competition from subtropical tree species has limited the range of Taiwan spruce to the higher altitudes of the island. Using seeds sampled from an area in the central mountain range of Taiwan, 15 nuclear loci were sequenced in order to measure genetic variation and to assess the long-term genetic stability of the species. Genetic diversity is...

Data from: Conflicting selection on the timing of germination in a natural population of Arabidopsis thaliana

Reiko Akiyama & Jon Agren
The timing of germination is a key life-history trait that may strongly influence plant fitness and that sets the stage for selection on traits expressed later in the life cycle. In seasonal environments, the period favourable for germination and the total length of the growing season are limited. The optimal timing of germination may therefore be governed by conflicting selection through survival and fecundity. We conducted a field experiment to examine the effects of timing...

Data from: Habitat variation and wing coloration affects wing shape evolution in dragonflies

David Outomuro, Klaas-Douwe B. Dijkstra, Frank Johansson & K.-D. B. Dijkstra
Habitats are spatially and temporally variable, and organisms must be able to track these changes. One potential mechanism for this is dispersal by flight. Therefore, we would expect flying animals to show adaptations in wing shape related to habitat variation. In this work, we explored variation in wing shape in relation to preferred water body (flowing water or standing water with tolerance for temporary conditions) and landscape (forested to open) using 32 species of dragonflies...

Data from: Quantitative genetic divergence and standing genetic (co)variance in thermal reaction norms along latitude

David Berger, Erik Postma, Wolf Blanckenhorn, Richard John Walters & Wolf U. Blanckenhorn
Although the potential to adapt to warmer climate is constrained by genetic trade-offs, our understanding of how selection and mutation shape genetic (co)variances in thermal reaction norms is poor. Using 71 isofemale lines of the fly Sepsis punctum, originating from northern, central and southern European climates, we tested for divergence in juvenile development rate across latitude at five experimental temperatures. To investigate effects of evolutionary history in different climates on standing genetic variation in reaction...

Data from: Phylogeography of willow grouse (Lagopus lagopus) in the Arctic: taxonomic discordance as inferred from molecular data

Jacob Höglund, Biao Wang, Thomas Axelsson & María Quintela
Using independently segregating nuclear single nucleotide polymorphisms (SNPs) and mitochondrial control region sequences, we found an east–west division among sampled willow grouse Lagopus lagopus subspecies. This division cut across the range of the subspecies with the largest distribution (lagopus) and thus contradicted existing taxonomic classifications. Russian Lagopus lagopus lagopus tended to cluster with North American willow grouse partly classified as other subspecies. Scandinavian willow grouse (L. l. lagopus) clustered with red grouse from Britain and...

Data from: Low fertility of wild hybrid male flycatchers despite recent divergence

Murielle Ålund, Simone Immler, Amber M. Rice, Anna Qvarnström, M. Alund & A. Qvarnstrom
Postzygotic isolation may be important for maintaining species boundaries, particularly when premating barriers are incomplete. Little is known about the course of events leading from minor environmental mismatches affecting hybrid fitness to severe genetic incompatibilities causing sterility or inviability. We investigated whether reduced reproductive success of hybrid males was caused by suboptimal sperm traits or by more severe genetic incompatibilities in a hybrid zone of pied (Ficedula hypoleuca) and collared flycatchers (F. albicollis) on the...

Data from: Evaluating the reintroduction project of Przewalski’s horse in China using genetic and pedigree data

Gang Liu, Aaron B. A. Shafer, Defu Hu, Wenting Wang, Hongjun Chu, Aaron B.A. Shafer, Jie Cao & Chongxue Zhao
Przewalski's horse went extinct in the wild in the mid 1960’s. Starting in 1985, individuals were brought from western zoos to two centers in China and breeding programs were initiated. With the increasing size of captive populations, two reintroduction projects were launched in the northwestern China in 2001 and 2010. Knowledge on genetic diversity in China’s horse populations is limited, but would help improve the genetic management and assess the success of the reintroduction. Accordingly,...

Data from: Identification of Swedish mosquitoes based on molecular barcoding of the COI gene and SNP analysis

Cecilia Engdahl, Pär Larsson, Jonas Näslund, Mayra Bravo, Magnus Evander, Jan O. Lundstrom, Clas Ahlm & Göran Bucht
Mosquito-borne infectious diseases are emerging in many regions of the world. Consequently, surveillance of mosquitoes and concomitant infectious agents is of great importance for prediction and prevention of mosquito-borne infectious diseases. Currently, morphological identification of mosquitoes is the traditional procedure. However, sequencing of specified genes or standard genomic regions, DNA barcoding, has recently been suggested as a global standard for identification and classification of many different species. Our aim was to develop a genetic method...

Data from: No evidence for nuclear introgression despite complete mtDNA replacement in the Carpathian newt (Lissotriton montandoni)

Piotr Zieliński, Krystyna Nadachowska-Brzyska, Ben Wielstra, Rafał Szkotak, Severus D. Covaciu-Marcov, Dan Cogalniceanu & Wieslaw Babik
Patterns of interspecific introgression may vary geographically, and the distribution of introgressed variants can yield insight into the historical dynamics of genetic interactions between hybridizing species. Urodele amphibians, often characterized by limited mobility, deep intraspecific genetic structuring and vulnerability to climatic changes, constitute suitable models for such historical inferences. Here, we combine an extensive survey of the mitochondrial (mtDNA) and nuclear (15 microsatellites) genomes in the Carpathian newt, Lissotriton montandoni (Lm) with species distribution modelling...

Data from: Taxonomy, biogeography and DNA barcodes of Geodia species (Porifera, Demospongiae, Tetractinellida) in the Atlantic boreo-arctic region

Paco Cárdenas, Hans Tore Rapp, Anne Birgitte Klitgaard, Megan Best, Mikael Thollesson & Ole Secher Tendal
Geodia species north of 60°N in the Atlantic appeared in the literature for the first time when Bowerbank described Geodia barretti and G. macandrewii in 1858 from western Norway. Since then, a number of species have been based on material from various parts of the region: G. simplex, Isops phlegraei, I. pallida, I. sphaeroides, Synops pyriformis, G. parva, G. normani, G. atlantica, Sidonops mesotriaena (now called G. hentscheli), and G. simplicissima. In addition to these...

Data from: Evolutionarily stable sex ratios and mutation load

Josh Hough, Simone Immler, Spencer C. H. Barrett & Sarah P. Otto
Frequency-dependent selection should drive dioecious populations toward a 1:1 sex ratio, but biased sex ratios are widespread, especially among plants with sex chromosomes. Here, we develop population genetic models to investigate the relationships between evolutionarily stable sex ratios, haploid selection, and deleterious mutation load. We confirm that when haploid selection acts only on the relative fitness of X and Y-bearing pollen and the sex ratio is controlled by the maternal genotype, seed sex ratios evolve...

Data from: The developmental plasticity and functional significance of an additional sperm storage compartment in female yellow dung flies

Martin A. Schäfer, David Berger, Ralf Jochmann, Wolf U. Blanckenhorn & Luc F. Bussière
1. The mechanistic basis for, and adaptive significance of variation in female sperm storage organs is important for a range of questions concerning sexual selection and speciation, as such variation influences the evolutionary trajectories of male fertilization related traits and may facilitate speciation through its effects on gamete recognition. 2. Female yellow dung flies (Scathophaga stercoraria) usually develop three sperm storage compartments, and this subdivision may be an adaptation for sorting sperm during post-copulatory choice....

Data from: Neurospora and the dead-end hypothesis: genomic consequences of selfing in the model genus.

Anastasia Gioti, Jason E. Stajich & Hanna Johannesson
It is becoming increasingly evident that adoption of different reproductive strategies, such as sexual selfing and asexuality, greatly impacts genome evolution. In this study, we test theoretical predictions on genomic maladaptation of selfing lineages using empirical data from the model fungus Neurospora. We sequenced the genomes of four species representing distinct transitions to selfing within the history of the genus, as well as the transcriptome of one of these, and compared with available data from...

Data from: Global biogeography of scaly tree ferns (Cyatheaceae): evidence for Gondwanan vicariance and limited transoceanic dispersal

Petra Korall & Kathleen M. Pryer
Aim: Scaly tree ferns, Cyatheaceae, are a well-supported group of mostly tree-forming ferns found throughout the tropics, the subtropics and the south-temperate zone. Fossil evidence shows that the lineage originated in the Late Jurassic period. We reconstructed large-scale historical biogeographical patterns of Cyatheaceae and tested the hypothesis that some of the observed distribution patterns are in fact compatible, in time and space, with a vicariance scenario related to the break-up of Gondwana. Location: Tropics, subtropics...

Data from: Malaria infections reinforce competitive asymmetry between two Ficedula flycatchers in a recent contact zone

Katarzyna Kulma, Matthew Low, Staffan Bensch & Anna Qvarnstrom
Parasites may influence the outcome of interspecific competition between closely related host species through lower parasite virulence in the host with which they share the longer evolutionary history. We tested this idea by comparing the prevalence of avian malaria (Haemosporidia) lineages and their association with survival in pied and collared flycatchers (Ficedula hypoleuca and F. albicollis) breeding in a recent contact zone on the Swedish island of Öland. A nested PCR protocol amplifying haemosporidian fragments...

Data from: Sex-dependent evolution of life-history traits following adaptation to climate warming

Björn Rogell, William Widegren, Lára R. Hallsson, David Berger, Mats Björklund & Alexei A. Maklakov
1. Thermodynamic processes increase metabolic rate and decrease longevity at high temperatures in ectotherms. However, how sustained long-term increase in temperature affects the evolution of longevity is poorly understood. 2. Stress theory of ageing predicts that increased longevity is positively genetically correlated with resistance to different types of environmental stressors implying that evolutionary trajectories of ageing may be mediated by correlative selection for robust phenotypes under thermal stress. 3. Here, we test this hypothesis by...

Data from: Artificial selection on relative brain size reveals a positive genetic correlation between brain size and proactive personality in the guppy

Alexander Kotrschal, Eva J. P. Lievens, Josefin Dahlbom, Andreas Bundsen, Svetlana Semenova, Maria Sundvik, Alexei A. Maklakov, Svante Winberg, Pertti Panula, Niclas Kolm & Eva JP Lievens
Animal personalities range from individuals that are shy, cautious, and easily stressed (a ‘reactive’ personality type) to individuals that are bold, innovative and quick to learn novel tasks, but also prone to routine formation (a ‘proactive’ personality type). Although personality differences should have important consequences for fitness, their underlying mechanisms remain poorly understood. Here, we investigated how genetic variation in brain size affects personality. We put selection lines of large- and small-brained guppies (Poecilia reticulata),...

Data from: Maternal antibodies contribute to sex based difference in hantavirus transmission dynamics

Eva R. Kallio, Heikki Henttonen, Esa Koskela, Åke Lundkvist, Tapio Mappes, Olli Vapalahti & A. Lundkvist
Individuals often differ in their ability to transmit disease and identifying key individuals for transmission is a major issue in epidemiology. Male hosts are often thought to be more important than females for parasite transmission and persistence. However, the role of infectious females, particularly the transient immunity provided to offspring through maternal antibodies (MatAbs), has been neglected in discussions about sex-biased infection transmission. We examined the effect of host sex upon infection dynamics of zoonotic...

Data from: Faster clonal turnover in high-infection habitats provides evidence for parasite-mediated selection

Dorota Paczesniak, Sofia Adolfsson, Katri Liljeroos, Kirsten Klappert, Curt M. Lively & Jukka Jokela
According to the Red Queen hypothesis for sex, parasite-mediated selection against common clones counterbalances the reproductive advantage of asexual lineages, which would otherwise outcompete sexual conspecifics. Such selection on the clonal population is expected to lead to a faster clonal turnover in habitats where selection by parasites is stronger. We tested this prediction by comparing the genetic structure of clonal and sexual populations of freshwater snail Potamopyrgus antipodarum between years 2003 and 2007 in three...

Data from: Strong inbreeding depression in two Scandinavian populations of the self-incompatible perennial herb Arabidopsis lyrata

Nina Sletvold, Mathilde Mousset, Jenny Hagenblad, Bengt Hansson & Jon Ågren
Inbreeding depression is a key factor influencing mating system evolution in plants, but current understanding of its relationship with selfing rate is limited by a sampling bias with few estimates for self-incompatible species. We quantified inbreeding depression (δ) over two growing seasons in two populations of the self-incompatible perennial herb Arabidopsis lyrata ssp. petraea in Scandinavia. Inbreeding depression was strong and of similar magnitude in both populations. Inbreeding depression for overall fitness across two seasons...

Registration Year

  • 2013

Resource Types

  • Dataset


  • Uppsala University
  • University of Zurich
  • Duke University
  • Swedish University of Agricultural Sciences
  • University of Copenhagen
  • University of Helsinki
  • Stockholm University
  • Sun Yat-sen University
  • Queen's University Belfast
  • Museum and Institute of Zoology