58 Works

Data from: Rearing conditions have long-term sex-specific fitness consequences in the collared flycatcher

Eszter Szász, Eszter Szöllősi, Gergely Hegyi, János Török & Balázs Rosivall
Rearing conditions may exert profound effects on individual performance, however, effects manifested after independence and recruitment are seldom considered. Here, we examine the long-term fitness consequences of rearing conditions in the collared flycatcher, a species where rearing conditions have sex-specific effects on nestling growth (with greater effects in males), but not on morphology at fledging. We performed a brood size manipulation experiment, and followed the recruits during their local lifetime. Brood size manipulation did not...

Data from: Persistence of an extreme male-biased adult sex ratio in a natural population of polyandrous bird

András Kosztolányi, Zoltan Barta, Clemens Küpper & Tamás Székely
In a number of insects, fishes and birds the conventional sex roles are reversed: males are the main care provider whereas females focus on matings. The reversal of typical sex roles is an evolutionary puzzle, because it challenges the foundations of sex roles, sexual selection and parental investment theory. Recent theoretical models predict that biased parental care may be a response to biased adult sex ratios (ASRs). However, estimating ASR is challenging in natural populations,...

Data from: Radiolarian biodiversity dynamics through the Triassic and Jurassic: implications for proximate causes of the end-Triassic mass extinction

Ádám T. Kocsis, Wolfgang Kiessling & József Pálfy
Within a ∼60-Myr interval in the Late Triassic to Early Jurassic, a major mass extinction took place at the end of Triassic, and several biotic and environmental events of lesser magnitude have been recognized. Climate warming, ocean acidification, and a biocalcification crisis figure prominently in scenarios for the end-Triassic event and have been also suggested for the early Toarcian. Radiolarians, as the most abundant silica-secreting marine microfossils of the time, provide a control group against...

Data from: Palaeobiogeography and evolutionary patterns of the larger foraminifer Borelis de Montfort (Borelidae)

Davide Bassi, Juan Carlos Braga, Giovanni Di Domenico, Johannes Pignatti, Sigal Abramovich, Pamela Hallock, Janine Koenen, Zoltan Kovacs, Martin R. Langer, Giulio Pavia & Yasufumi Iryu
The palaeobiogeography of the alveolinoid Borelis species reveals the evolutionary patterns leading to the two extant representatives, which occur in shallow-water tropical carbonate, coral reef-related settings. Type material and new material of fossil Borelis species, along with Recent specimens were studied to assess their taxonomic status, species circumscriptions (based on proloculus size, occurrence of Y-shaped septula, and the index of elongation), palaeobiogeography and evolutionary dynamics. The species dealt with here are known from exclusively fossil...

Data from: Teleconnections and local weather orchestrate the reproduction of tit species in the Carpathian Basin

Miklós Laczi, László Zsolt Garamszegi, Gergely Hegyi, Márton Herényi, Gábor Ilyés, Réka Könczey, Gegrely Nagy, Rita Pongrácz, Balázs Rosivall, Eszter Szöllősi, László Tóth & János Török
Variation in climatic conditions is an important driving force of ecological processes. Populations are under selection to respond to climatic changes with respect to phenology of the annual cycle (e.g. breeding, migration) and life-history. As teleconnections can reflect climate on a global scale, the responses of terrestrial animals are often investigated in relation to the El Niño-Southern Oscillation and North Atlantic Oscillation. However, investigation of other teleconnections and local climate is often neglected. In this...

Data from: The effect of social environment on bird song: listener-specific expression of a sexual signal

Mónika Jablonszky, Sándor Zsebők, Miklós Laczi, Gergely Nagy, Éva Vaskuti & László Zsolt Garamszegi
Animal signals should consistently differ among individuals to convey distinguishable information about the signalers. However, behavioral display signals, such as bird song are also loaded with considerable within-individual variance with mostly unknown function. We hypothesized that the immediate social environment may play a role in mediating such variance component, and investigated in the collared flycatcher (Ficedula albicollis) if the identity and quality of listeners could affect song production in signalers. After presenting territorial males with...

Local versus broad scale environmental drivers of continental beta diversity patterns in subterranean spider communities across Europe

Stefano Mammola, Pedro Cardoso, Dorottya Angyal, Gergely Balázs, Theo Blick, Hervé Brustel, Julian Carter, Srećko Ćurčić, Samuel Danflous, László Dányi, Sylvain Déjean, Christo Deltshev, Mert Elverici, Jon Fernandez Perez, Fulvio Gasparo, Marjan Komnenov, Christian Komposch, Ľubomír Kováč, Kadir Kuntz, Andrej Mock, Oana Moldovan, Maria Naumova, Martina Pavlek, Carlos Prieto, Carles Ribera … & Marco Isaia
Macroecologists seek to identify drivers of community turnover (β-diversity) through broad spatial scales. Yet, the influence of local habitat features in driving broad-scale β-diversity patterns remains largely untested, due to the objective challenges of associating local-scale variables to continental-framed datasets. We examined the relative contribution of local- versus broad-scale drivers of continental β-diversity patterns, using a uniquely suited dataset of cave-dwelling spider communities across Europe (35–70° latitude). Generalized dissimilarity modeling showed that geographical distance, mean...

Data from: What is behind the variation in mate quality dependent sex ratio adjustment? – A meta-analysis

Eszter Szász, László Z. Garamszegi & Balázs Rosivall
Theory predicts that parents adjust the sex ratio of their brood to the sexually selected traits of their mate because the reproductive success of sons may be more dependent on inherited paternal attractiveness than that of daughters. Empirical studies vary in terms of whether they support the theory, and this variation has often been regarded as evidence against sex ratio adjustment or has been ascribed to methodological differences. Applying phylogenetic meta-analyses, we aimed to find...

Data from: Effects of perceived predation risk and social environment on the development of three-spined stickleback (Gasterosteus aculeatus) morphology

Nurul I. Ab Ghani, Gábor Herczeg & Juha Merilä
Phenotypically plastic changes in response to variation in perceived predation risk are widespread, but little is known about if and how social environment modulates induced responses to predation risk. We investigated the influence of perceived predation risk (i.e. chemical cues from a predator) and social environment (i.e. one, two or 20 individuals reared together) on three-spined stickleback (Gasterosteus aculeatus) morphology in a factorial common garden experiment. We found that exposure to chemical cues from potential...

Data from: Geographies of an online social network

Balázs Lengyel, Attila Varga, Bence Ságvári, Ákos Jakobi & János Kertész
How is online social media activity structured in the geographical space? Recent studies have shown that in spite of earlier visions about the “death of distance”, physical proximity is still a major factor in social tie formation and maintenance in virtual social networks. Yet, it is unclear, what are the characteristics of the distance dependence in online social networks. In order to explore this issue the complete network of the former major Hungarian online social...

Data from: Contagious fear: escape behaviour increases with flock size in European gregarious birds

Federico Morelli, Yanina Benedetti, Mario Diaz, Tomas Grim, Juan Ibáñez-Álamo, Jukka Jokimäki, Marja-Liisa Kaisanlahti-Jokimäki, Kunter Tätte, Gábor Markó, Yiting Jiang, Piotr Tryjanowski & Anders P. Møller
Flight initiation distance (FID), the distance at which individuals take flight when approached by a potential (human) predator, is a tool for understanding predator-prey interactions. Among the factors affecting FID, tests of effects of group size (i.e. number of potential prey) on FID have yielded contrasting results. Group size or flock size could either affect FID negatively (i.e. the dilution effect caused by the presence of many individuals) or positively (i.e. increased vigilance due to...

Data from: Susceptibility to ecological traps is similar among closely related taxa but sensitive to spatial isolation

Bruce A. Robertson, Isabel A. Keddy-Hector, Shailab D. Shrestha, Leah Y. Silverberg, Clara E. Woolner, Ian Hetterich & Gabor Horváth
Ecological traps are maladaptive behavioural scenarios in which animals prefer to settle in habitats with the lowest survival and/or reproductive success. Aquatic insect species, for example, are attracted to sources of horizontally polarized light associated with natural water bodies, but today they commonly prefer to lay their eggs upon asphalt roads and buildings that reflect an unnaturally high percentage of polarized light. Ecological traps are a rapidly emerging threat to the persistence of animal populations,...

Data from: Avian brood parasitism and ectoparasite richness – scale-dependent diversity interactions in a three-level host-parasite system

Zoltán Vas, Tibor István Fuisz, Péter Fehérvári, Jenő Reiczigel & Lajos Rózsa
Brood parasitic birds, their foster species and their ectoparasites form a complex co-evolving system composed of three hierarchical levels. However, effects of hosts’ brood parasitic life-style on the evolution of their louse (Phthiraptera: Amblycera, Ischnocera) lineages have never been tested. We present two phylogenetic analyses of ectoparasite richness of brood parasitic clades. Our hypothesis was that brood parasitic life-style affects louse richness negatively across all avian clades due to the lack of vertical transmission routes....

Data from: A hyperparasite affects the population dynamics of a wild plant pathogen

Charlotte Tollenaere, Benoit Pernechele, Hannu S. Mäkinen, Steven R. Parratt, Mark Z. Németh, Gabor M. Kovács, Levente Kiss, Ayco J. M. Tack & Anna-Liisa Laine
Assessing the impact of natural enemies of plant and animal pathogens on their host's population dynamics is needed to determine the role of hyperparasites in affecting disease dynamics, and their potential for use in efficient control strategies of pathogens. Here we focus on the long-term study describing metapopulation dynamics of an obligate pathogen, the powdery mildew (Podosphaera plantaginis) naturally infecting its wild host plant (Plantago lanceolata) in the fragmented landscape of the Åland archipelago (southwest...

A practical approach to measuring the acoustic diversity by community ecology methods

Sándor Zsebők, Dénes Schmera, Miklós Laczi, Gergely Nagy, Éva Vaskuti, János Török & László Garamszegi
The study of the diversity of animal signals on within- and among-species levels is the key to uncover mechanisms that shape the evolution of communication systems. However, the methods used to quantify acoustic diversity (like repertoire size) lack to grasp several aspects of acoustic diversity. Here, we propose a new framework for the study of animal communication, in which we decompose the acoustic diversity with the methodological toolbox from community ecology. We explore how different...

Maternal diet affects juvenile Carpetan rock lizard performance and personality

Gergely Horváth, Gonzalo Rodríguez-Ruiz, José Martín, Pilar López & Gábor Herczeg
Differences in both stable and labile state variables are known to affect the emergence and maintenance of consistent inter-individual behavioural variation (animal personality or behavioural syndrome), especially when experienced early in life. Variation in environmental conditions experienced by gestating mothers (viz. non-genetic maternal effects) are known to have significant impact on offspring condition and behaviour, yet, their effect on behavioural consistency is not clear. Here, by applying an orthogonal experimental design, we aimed to study...

Habitat features and colony characteristics influencing ant personality and its fitness consequences

István Maák, Trigos-Peral Gema, Ślipiński Piotr, Grześ Irena & Horváth Gergely
Several factors can influence individual and group behavioral variation that can have important fitness consequences. In this study, we tested how two habitat types (semi-natural meadows and meadows invaded by Solidago plants) and factors like colony and worker size and nest density influence behavioral (activity, meanderness, exploration, aggression, nest displacement) variation on different levels of the social organization of Myrmica rubra ants and how these might affect the colony productivity. We assumed that the factors...

Data from: Is foraging innovation lost following colonisation of a less variable environment? a case study in surface- vs. cave-dwelling Asellus aquaticus

Gábor Herczeg, Viktória Priszcilla Hafenscher, Gergely Balázs, Žiga Fišer, Simona Kralj-Fišer & Gergely Horváth
Behavioural innovation is a key process for successful colonisation of new habitat types. However, it is costly due to the necessary cognitive and neural demands and typically connected to ecological generalism. Therefore, loss of behavioural innovativeness is predicted following colonisation of new, simple and invariable environments. We tested this prediction by studying foraging innovativeness in the freshwater isopod Asellus aquaticus. We sampled its populations along the route of colonising a thermokarstic water-filled cave (simple, stable...

Data from: Multivariate analysis of dopaminergic gene variants as risk factors of heroin dependence

Andrea Vereczkei, Zsolt Demetrovics, Anna Szekely, Peter Sarkozy, Peter Antal, Agnes Szilagyi, Maria Sasvari-Szekely & Csaba Barta
BACKGROUND: Heroin dependence is a debilitating psychiatric disorder with complex inheritance. Since the dopaminergic system has a key role in rewarding mechanism of the brain, which is directly or indirectly targeted by most drugs of abuse, we focus on the effects and interactions among dopaminergic gene variants. OBJECTIVE: To study the potential association between allelic variants of dopamine D2 receptor (DRD2), ANKK1 (ankyrin repeat and kinase domain containing 1), dopamine D4 receptor (DRD4), Catechol-O-methyl transferase...

Data from: Experience during development triggers between-individual variation in behavioural plasticity

Tamás János Urszán, Laszlo Zsolt Garamszegi, Gergely Nagy, Attila Hettyey, Janos Torok & Gábor Herczeg
1. Behavioural consistency within and across behaviours (animal personality and behavioural syndrome, respectively) have been vigorously studied in the last decade, leading to the emergence of ’animal personality’ research. It has been proposed recently that not only mean behaviour (behavioural type), but the environmentally induced behavioural change (behavioural plasticity) might also differ between individuals within populations. 2. While case studies presenting between-individual variation in behavioural plasticity have started to accumulate, the mechanisms behind its emergence...

Data from: Optimized flocking of autonomous drones in confined environments

Gábor Vásárhelyi, Csaba Virágh, Gergő Somorjai, Tamás Nepusz, Agoston E. Eiben & Tamás Vicsek
We address a fundamental issue of collective motion of aerial robots: how to ensure that large flocks of autonomous drones seamlessly navigate in confined spaces. The numerous existing flocking models are rarely tested on actual hardware because they typically neglect some crucial aspects of multirobot systems. Constrained motion and communication capabilities, delays, perturbations, or the presence of barriers should be modeled and treated explicitly because they have large effects on collective behavior during the cooperation...

Data from: Different from trees, more than metaphors: branching silhouettes—corals, cacti, and the oaks

János Podani
There has long been ambiguity in the use of the term tree in phylogenetic systematics, which is a continuous source of misinterpretation of evolutionary relationships. The basic problem is that while many trees with phylogenetic or evolutionary relevance, such as cladograms, are consistent with graph theory, tree-like visualization of phylogeny may also be done via other types of graphics, especially botanical (or literal) tree drawings. As a consequence, the meaning of such diagrams is not...

Data from: Genome-scale phylogenetic analysis finds extensive gene transfer among fungi

Gergely J. Szöllősi, Adrián Arellano Davín, Eric Tannier, Vincent Daubin & Bastien Boussau
Although the role of lateral gene transfer is well recognized in the evolution of bacteria, it is generally assumed that it has had less influence among eukaryotes. To explore this hypothesis, we compare the dynamics of genome evolution in two groups of organisms: cyanobacteria and fungi. Ancestral genomes are inferred in both clades using two types of methods: first, Count, a gene tree unaware method that models gene duplications, gains and losses to explain the...

Data from: Evidence for sex-specific selection in brain: a case study of the nine-spined stickleback

Gabor Herczeg, Kaisa Välimäki, Abigél Gonda & Juha Merilä
Theory predicts that the sex making greater investments into reproductive behaviours demands higher cognitive ability, and as a consequence, larger brains or brain parts. Further, the resulting sexual dimorphism can differ between populations adapted to different environments, or among individuals developing under different environmental conditions. In the nine-spine stickleback (Pungitius pungitius), males perform nest building, courtship, territory defence and parental care, whereas females perform mate choice and produce eggs. Also, predation-adapted marine and competition-adapted pond...

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...

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