62 Works

Data from: Postcopulatory sexual selection is associated with accelerated evolution of sperm morphology

Melissah Rowe, Tomas Albrecht, Emily Rebecca Alison Cramer, Arild Johnsen, Terje Laskemoen, Jason T. Weir & Jan T. Lifjeld
Rapid diversification of sexual traits is frequently attributed to sexual selection, though explicit tests of this hypothesis remain limited. Spermatozoa exhibit remarkable variability in size and shape, and studies report a correlation between sperm morphology (sperm length and shape) and sperm competition risk or female reproductive tract morphology. However, whether postcopulatory processes (e.g. sperm competition and cryptic female choice) influence the speed of evolutionary diversification in sperm form is unknown. Using passerine birds, we quantified...

Data from: Patterns of MHC-dependent mate selection in humans and non-human primates: a meta-analysis

Jamie Winternitz, Jessica Abbate, Elise Huchard, Jan Havlíček & Laszlo Z. Garamszegi
Genes of the major histocompatibility complex (MHC) in vertebrates are integral for effective adaptive immune response and are associated with sexual selection. Evidence from a range of vertebrates supports MHC-based preference for diverse and dissimilar mating partners, but evidence from human mate choice studies has been disparate and controversial. Methodologies and sampling peculiarities specific to human studies make it difficult to know whether wide discrepancies in results among human populations are real or artefact. To...

Data from: Evaluation of two approaches to genotyping MHC class I in a passerine – CE-SSCP and 454 pyrosequencing

Marta Promerová, Wiesław Babik, Josef Bryja, Tomáš Albrecht, Michał Stuglik & Jacek Radwan
Genes of the highly dynamic major histocompatibility complex (MHC) are directly linked to individual fitness and are of high interest in evolutionary ecology and conservation genetics. Gene duplication and positive selection usually lead to high levels of polymorphism in the MHC region, making genotyping of MHC a challenging task. Here, we compare the performance of two methods for MHC class I genotyping in a passerine with highly duplicated MHC class I genes: capillary electrophoresis single...

Data from: Multilocus phylogeography of a widespread savanna-woodland adapted rodent reveals the influence of Pleistocene geomorphology and climate change in Africa’s Zambezi region

Molly M. McDonough, Radim Šumbera, Vladimír Mazoch, Adam W. Ferguson, Caleb D. Phillips & Josef Bryja
Understanding historical influences of climate and physiographic barriers in shaping patterns of biodiversity remains limited for many regions of the world. For mammals of continental Africa, phylogeographic studies, particularly for West African lineages, implicate both geographic barriers and climate oscillations in shaping small mammal diversity. In contrast, studies for southern African species have revealed conflicting phylogenetic patterns for how mammalian lineages respond to both climate change and geologic events such as river formation, especially during...

Data from: Gastrointestinal microbiota of wild and inbred individuals of two house mouse subspecies assessed using high throughput parallel pyrosequencing

Jakub Kreisinger, Dagmar Čížková & Jaroslav Piálek
The effects of gastrointestinal tract microbiota (GTM) on host physiology and health has been the subject of considerable interest in recent years. While a variety of captive bred species have been used in experiments, the extent to which GTM of captive and/or inbred individuals resembles natural composition and variation in wild populations is poorly understood. Using 454 pyrosequencing, we performed 16S rDNA GTM barcoding for 30 wild house mice (Mus musculus) and wild-derived inbred strain...

Data from: In the foothill zone - Sabanejewia balcanica (Karaman 1922), in the lowland zone - Sabanejewia bulgarica (Drensky 1928): myth or reality?

Jakub Fedorčák, Peter Križek, Jan Mendel & Jan Koščo
The status of golden loaches (genus Sabanejewia) in the region of Central Europe and Balkans is still ambiguous. The greatest controversy is caused by species Sabanejewia balcanica and S. bulgarica, whose distinguishing features are often difficult to prove and their occurrence in some river sections is often mentioned as sympatric. Previous phylogenetic studies aimed at the resolving of their taxonomic status did not include samples from their type localities and so led to a lack...

Data from: Predator-prey interactions shape thermal patch use in a newt larvae-dragonfly nymph model

Lumír Gvoždík, Eva Černická & Raoul Van Damme
Thermal quality and predation risk are considered important factors influencing habitat patch use in ectothermic prey. However, how the predator’s food requirement and the prey’s necessity to avoid predation interact with their respective thermoregulatory strategies remains poorly understood. The recently developed ‘thermal game model’ predicts that in the face of imminent predation, prey should divide their time equally among a range of thermal patches. In contrast, predators should concentrate their hunting activities towards warmer patches....

Data from: Multilocus phylogeography of the European ground squirrel: cryptic interglacial refugia of continental climate in Europe

Štěpánka Říčanová, Yordan Koshev, Oldřich Říčan, Nada Ćosić, Duško Ćirović, František Sedláček & Josef Bryja
The theory of classical and cryptic Pleistocene refugia is based mainly on historical changes in temperature, and the refugia are usually defined within a latitudinal gradient. However, the gradient of oceanic–continental climate (i.e. longitudinal) was also significantly variable during glacial cycles with important biotic consequences. Range-wide phylogeography of the European ground squirrel (EGS) was used to interpret the evolutionary and palaeogeographical history of the species in Europe and to shed light on its glacial–interglacial dynamic....

Data from: Phenotypic differentiation is associated with divergent sexual selection among closely related barn swallow populations

Matthew R. Wilkins, Hakan Karaardıç, Yoni Vortman, Thomas L. Parchman, Tomáš Albrecht, Adéla Petrželková, Leyla Özkan, Peter L. Pap, Joanna K. Hubbard, Amanda K. Hund & Rebecca J. Safran
Sexual selection plays a key role in the diversification of numerous animal clades and may accelerate trait divergence during speciation. However, much of our understanding of this process comes from phylogenetic comparative studies, which rely on surrogate measures such as dimorphism that may not represent selection in wild populations. In this study, we assess sexual selection pressures for multiple male visual signals across four barn swallow (Hirundo rustica) populations. Our sample encompassed 2400 linear km...

Data from: Rearing a virulent common cuckoo is not extra costly for its only cavity-nesting host

Peter Samaš, Jarkko Rutila, Marcel Honza, Michal Kysučan & Tomáš Grim
Virulent brood parasites refrain from arduous parental care, often kill host progeny and inflict rearing costs upon their hosts. Quantifying the magnitude of such costs across the whole period of care (from incubation through to parasite fledgling independence) is essential for understanding the selection pressures on hosts to evolve antiparasitic defences. Despite the central importance of such costs for our understanding of co-evolutionary dynamics, they have not yet been comprehensively quantified in any host of...

Susceptibility of fire-bellied toad (B. bombina and B. variegata) tadpoles to predation

Beate Nürnberger, Radovan Smolinský & Vojtech Baláž
B. bombina and B. variegata are ecologically distinct taxa that nevertheless hybridise in nature wherever their distribution ranges adjoin. These data were collected to test the hypothesis that B. variegata tadpoles are more susceptible to predation than those of B. bombina. The former develop in ephemeral aquatic sites that can be predator-free, whereas the latter are found in predator-rich semi-permanent ponds. Tadpoles of both taxa were raised under under uniform laboratory conditions and their relative...

Data from: Maternal-fetal genomic conflict and speciation: no evidence for hybrid placental dysplasia in crosses between two house mouse subspecies

Lucie Kropáčková, Jaroslav Piálek, Václav Gergelits, Jiří Forejt & Radka Reifová
Interspecific hybridization between closely related mammalian species, including various species of the genus Mus, is commonly associated with abnormal growth of the placenta and hybrid fetuses, a phenomenon known as hybrid placental dysplasia (HPD). The role of HPD in speciation is anticipated but still poorly understood. Here we studied placental and fetal growth in F1 crosses between four inbred mouse strains derived from two house mouse subspecies, Mus musculus musculus and M. m. domesticus. These...

Data from: Maternal source of variability in the embryo development of an annual killifish

Matej Polačik, Carl Smith & Martin Reichard
Organisms inhabiting unpredictable environments often evolve diversified reproductive bet-hedging strategies, expressed as production of multiple offspring phenotypes, thereby avoiding complete reproductive failure. To cope with unpredictable rainfall, African annual killifish from temporary savannah pools lay drought-resistant eggs that vary widely in the duration of embryo development. We examined the sources of variability in the duration of individual embryo development, egg production and fertilization rate in Nothobranchius furzeri. Using a quantitative genetics approach (North Carolina Type...

Data from: Reinforcement selection acting on the European house mouse hybrid zone

Barbora Vošlajerová Bimová, Miloš Macholán, Stuart J E Baird, Pavel Munclinger, Petra Dufková, Christina M Laukaitis, Robert C Karn, Kenneth Luzynski, Priscilla K Tucker & Jaroslav Piálek
Behavioural isolation may lead to complete speciation when partial postzygotic isolation acts in the presence of divergent specific mate recognition systems. These conditions exist where Mus musculus musculus and M. m. domesticus come into contact and hybridize. We studied two mate recognition signal systems, based on urinary and salivary proteins, across a Central European portion of the mouse hybrid zone. Introgression of the genomic regions responsible for these signals: the major urinary proteins (MUPs) and...

Data from: Invasion genetics of the introduced black rat (Rattus rattus) in Senegal, West Africa

Adam Konečný, Arnaud Estoup, Jean-Marc Duplantier, Josef Bryja, Khalilou Ba, Maxime Galan, Caroline Tatard & Jean-François Cosson
An understanding of the evolutionary history and dynamics of invasive species is required for the construction of predictive models of future spread, and the design of biological management measures. The black rat (Rattus rattus) is a major vertebrate invader with a worldwide distribution. Despite the severe ecological, economic and health impacts of this species, its evolutionary history has been little studied. We carried out extensive specimen sampling in Senegal, West Africa, and used microsatellite markers...

Data from: Egg morphology fails to identify nests parasitized by conspecifics in common pochard: a test based on protein fingerprinting and including female relatedness

Adéla Petrželková, Hannu Pöysä, Petr Klvaňa, Tomáš Albrecht & David Hořák
Conspecific brood parasites lay eggs in nests of other females of the same species. A variety of methods have been developed and used to detect conspecific brood parasitism (CBP). Traditional methods may be inaccurate in detecting CBP and in revealing its true frequency. On the other hand more accurate molecular methods are expensive and time consuming. Eadie developed a method for revealing CBP based on differences in egg morphology. That method is based on Euclidean...

Data from: Cognitive ability is heritable and predicts the success of an alternative mating tactic

Carl Smith, André Phillips & Martin Reichard
The ability to attract mates, acquire resources for reproduction, and successfully outcompete rivals for fertilizations may make demands on cognitive traits—the mechanisms by which an animal acquires, processes, stores and acts upon information from its environment. Consequently, cognitive traits potentially undergo sexual selection in some mating systems. We investigated the role of cognitive traits on the reproductive performance of male rose bitterling (Rhodeus ocellatus), a freshwater fish with a complex mating system and alternative mating...

Data from: Hybrid asexuality as a primary postzygotic barrier between nascent species: on the interconnection between asexuality, hybridization and speciation

Karel Janko, Jan Pačes, Hilde Wilkinson-Herbots, Rui J. Costa, Jan Roslein, Pavel Drozd, Nataliia Iakovenko, Jakub Rídl, Miluše Hroudová, Jan Kočí, Radka Reifová, Věra Šlechtová & Lukáš Choleva
Although sexual reproduction is ubiquitous throughout nature, the molecular machinery behind it has been repeatedly disrupted during evolution, leading to the emergence of asexual lineages in all eukaryotic phyla. Despite intensive research, little is known about what causes the switch from sexual reproduction to asexuality. Interspecific hybridization is one of the candidate explanations but the reasons for the apparent association between hybridization and asexuality remain unclear. In this study we combined cross-breeding experiments with population...

Data from: Non-breeding range size predicts the magnitude of population trends in trans-Saharan migratory passerine birds

Jaroslav Koleček, Petr Procházka, Christina Ieronymidou, Ian J. Burfield & Jiří Reif
Understanding why populations of some migratory species show a directional change over time, i.e. increase or decrease, while others do not, remains a challenge for ecological research. One possible explanation is that species with smaller non-breeding ranges may have more pronounced directional population trends, and their populations are thus more sensitive to the variation in environmental conditions in their non-breeding quarters. According to the serial residency hypothesis, this sensitivity should lead to higher magnitudes (i.e....

Data from: Sperm quality, aggressiveness and generation turnover can facilitate unidirectional Y chromosome introgression across the European house mouse hybrid zone

Jaroslav Piálek, Milos Macholán & Barbora Vošlajerová Bímová
The widespread and locally massive introgression of Y chromosomes of the eastern house mouse (Mus musculus musculus) into the range of the western subspecies (M. m. domesticus) in Central Europe calls for an explanation of its underlying mechanisms. Given the paternal inheritance pattern, obvious candidates for traits mediating the introgression are characters associated with sperm quantity and quality. We can also expect traits such as size, aggression, or the length of generation cycles to facilitate...

Data from: Pan-African phylogeography of a model organism, the African clawed frog “Xenopus laevis”

Ben L.S. Furman, Adam J. Bewick, Tia L. Harrison, Eli Greenbaum, Václav Gvoždík, Chifundera Kusamba, Ben Evans, Benjamin L. S. Furman & Ben J. Evans
The African clawed frog Xenopus laevis has a large native distribution over much of sub-Saharan Africa and is a model organism for research, a proposed disease vector, and an invasive species. Despite its prominent role in research and abundance in nature, surprisingly little is known about the phylogeography and evolutionary history of this group. Here we report an analysis of molecular variation of this clade based on 17 loci (one mitochondrial, 16 nuclear) in up...

Data from: Linkage disequilibrium network analysis (LDna) gives a global view of chromosomal inversions, local adaptation and geographic structure

Petri Kemppainen, Christopher G. Knight, Devojit K. Sarma, Thaung Hlaing, Anil Prakash, Yan Naung Maung Maung, Pradya Somboon, Jagadish Mahanta & Catherine Walton
Recent advances in sequencing allow population-genomic data to be generated for virtually any species. However, approaches to analyse such data lag behind the ability to generate it, particularly in nonmodel species. Linkage disequilibrium (LD, the nonrandom association of alleles from different loci) is a highly sensitive indicator of many evolutionary phenomena including chromosomal inversions, local adaptation and geographical structure. Here, we present linkage disequilibrium network analysis (LDna), which accesses information on LD shared between multiple...

Data from: Nest as an extended phenotype signal of female quality in the great reed warbler

Václav Jelínek, Milica Požgayová, Marcel Honza & Petr Procházka
Extended phenotypes with signalling function are mostly restricted to animal taxa that use construction behaviour during courtship displays. However, they can be used also as post-mating signals of mate quality, allowing individuals to obtain reliable information about their partners. Nest size may have such a signalling function and a lot of indirect evidence supports this view. However, direct evidence based on an experimental approach is still widely missing. Here we test the role of nest...

Data from: No ecological opportunity signal on a continental scale? Diversification and life-history evolution of African true toads (Anura: Bufonidae)

H. Christoph Liedtke, Hendrik Müller, Mark-Oliver Rödel, Michele Menegon, LeGrand Nono Gonwouo, Michael F. Barej, Václav Gvoždík, Andreas Schmitz, Alan Channing, Peter Nagel & Simon P. Loader
The niche-filling process predicted by the “ecological opportunity” (EO) model is an often-invoked mechanism for generating exceptional diversity in island colonizers. Whether the same process governs lineage accumulation and trait disparity during continental colonization events is less clear. Here, we test this prediction by investigating the rate dynamics and trait evolution of one of Africa's most widespread amphibian colonizers, the true toads (Bufonidae). By reconstructing the most complete molecular phylogeny of African Bufonidae to date,...

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