12 Works

Data from: Intraguild predation leads to cascading effects on habitat choice, behaviour and reproductive performance

Anna-Katharina Mueller, Nayden Chakarov, Hanna Heseker & Oliver Krüger
Intraguild predation (IGP) is a commonly recognized mechanism influencing the community structure of predators, but the complex interactions are notoriously difficult to disentangle. The mesopredator suppression hypothesis predicts that a superpredator may either simultaneously repress two mesopredators, restrain the dominant one and thereby release the subdominant mesopredator, or elicit different responses by both mesopredators. We show the outcome arising from such conditions in a three-level predator assemblage (Eurasian eagle owl Bubo bubo L., northern goshawk...

Data from: Female zebra finches smell their eggs

Sarah Golüke, Sebastian Dörrenberg, E. Tobias Krause & Barbara A. Caspers
Parental investment in unrelated offspring seems maladaptive from an evolutionary perspective, due to the costs of energy and resources that cannot be invested in related offspring at the same time. Therefore selection should favour mechanisms to discriminate between own and foreign offspring. In birds, much emphasis has been placed on understanding the visual mechanisms underlying egg recognition. However, olfactory egg recognition has almost been completely ignored. Here, we investigated whether female zebra finches (Taeniopygia guttata)...

Data from: Autosomal and X linked additive genetic variation for lifespan and aging: comparisons within and between the sexes in Drosophila melanogaster

Robert M. Griffin, Holger Schielzeth & Urban Friberg
Theory makes several predictions concerning differences in genetic variation between the X chromosome and the autosomes due to male X hemizygosity. The X chromosome should i) typically show relatively less standing genetic variation than the autosomes, ii) exhibit more variation in males compared to females because of dosage compensation, and iii) potentially be enriched with sex-specific genetic variation. Here we address each of these predictions for lifespan and aging in Drosophila melanogaster. To achieve unbiased...

Data from: Long-term effective population size dynamics of an intensively monitored vertebrate population

Anna-Katharina Mueller, Nayden Chakarov, Oliver Krüger & Joseph Ivan Hoffman
Long-term genetic data from intensively monitored natural populations are important for understanding how effective population sizes (Ne) can vary over time. We therefore genotyped 1622 common buzzard (Buteo buteo) chicks sampled over 12 consecutive years (2002–2013 inclusive) at 15 microsatellite loci. This data set allowed us to both compare single-sample with temporal approaches and explore temporal patterns in the effective number of parents that produced each cohort in relation to the observed population dynamics. We...

Data from: N/P imbalance as a key driver for the invasion of oligothrophic dune systems by a woody legume

Florian Ulm, Christine Hellmann, Cristina Cruz & Cristina Máguas
Oligotrophic ecosystems, previously considered to be more resilient to invasive plants, are now recognised to be highly vulnerable to invasions. In these systems, woody legumes show belowground ecosystem engineering characteristics that enable invasion, however, the underlying processes are not well understood. Using a Portuguese primary dune ecosystem as an oligotrophic model system, belowground biomass pools, turnover rates and stoichiometry of a native (Stauracanthus spectabilis) and an invasive legume (Acacia longifolia) were compared and related to...

Data from: No effect of partner age and lifespan on female age-specific reproductive performance in blue tits

Seyed Mehdi Amininasab, Martijn Hammers, Oscar Vedder, Jan Komdeur & Peter Korsten
Studies of age-specific reproductive performance are fundamental to our understanding of population dynamics and the evolution of life-history strategies. In species with bi-parental care, reproductive ageing trajectories of either parent may be influenced by their partner's age, but this has rarely been investigated. We investigated within-individual age-specific performance (laying date and number of eggs laid) in wild female blue tits Cyanistes caeruleus and evaluated how the age and longevity of their male partner indirectly influenced...

Data from: Lifespan and reproductive cost explain interspecific variation in the optimal onset of reproduction

Emeline Mourocq, Pierre Bize, Sandra Bouwhuis, Russell Bradley, Anne Charmantier, Carlos De La Cruz, Szymon Marian Obniak, Richard H. M. Espie, Márton Herenyi, Hermann Hötker, Oliver Kruger, John Marzluff, Anders P. Møller, Shinichi Nakagawa, Richard A. Phillips, Andrew N. Radford, Alexandre Roulin, János Török, Juliana Valencia, Martijn Van De Pol, Ian G. Warkentin, Isabel S. Winney, Andrew G. Wood, Michael Griesser & Szymon M. Drobniak
Fitness can be profoundly influenced by the age at first reproduction (AFR), but to date the AFR-fitness relationship only has been investigated intraspecifically. Here we investigated the relationship between AFR and average lifetime reproductive success (LRS) across 34 bird species. We assessed differences in the deviation of the Optimal AFR (i.e., the species-specific AFR associated with the highest LRS) from the age at sexual maturity, considering potential effects of life-history as well as social and...

Data from: Population structure and historical demography of South American sea lions provide insights into the catastrophic decline of a marine mammal population

Joseph I. Hoffman, Gabriele J. Kowalski, Anastasia Klimova, Luke J. Eberhart-Phillips, Ian J. Staniland, Fritz Trillmich & Alastair M.M. Baylis
Understanding the causes of population decline is crucial for conservation management. We therefore used genetic analysis both to provide baseline data on population structure and to evaluate hypotheses for the catastrophic decline of the South American sea lion (Otaria flavescens) at the Falkland Islands (Malvinas) in the South Atlantic. We genotyped 259 animals from 23 colonies across the Falklands at 281 bp of the mitochondrial hypervariable region and 22 microsatellites. A weak signature of population...

Data from: Experimentally evolved and phenotypically plastic responses to enforced monogamy in a hermaphroditic flatworm

Tim Janicke, Peter Sandner, Steven A. Ramm, Dita B Vizoso & Lukas Schärer
Sexual selection is considered a potent evolutionary force in all sexually reproducing organisms, but direct tests in terms of experimental evolution of sexual traits are still lacking for simultaneously hermaphroditic animals. Here, we tested how evolution under enforced monogamy affected a suite of reproductive traits (including testis area, sex allocation, genital morphology, sperm morphology and mating behaviour) in the outcrossing hermaphroditic flatworm Macrostomum lignano, using an assay that also allowed the assessment of phenotypically plastic...

Data from: Analysis of animal accelerometer data using hidden Markov models

Vianey Leos-Barajas, Theoni Photopoulou, Roland Langrock, Toby A. Patterson, Yuuki Y. Watanabe, Megan Murgatroyd & Yannis P. Papastamatiou
Use of accelerometers is now widespread within animal biologging as they provide a means of measuring an animal's activity in a meaningful and quantitative way where direct observation is not possible. In sequential acceleration data, there is a natural dependence between observations of behaviour, a fact that has been largely ignored in most analyses. Analyses of acceleration data where serial dependence has been explicitly modelled have largely relied on hidden Markov models (HMMs). Depending on...

Data from: EB Ford revisited: assessing the long-term stability of wing-spot patterns and population genetic structure of the meadow brown butterfly on the Isles of Scilly

Simon W. Baxter, Joseph I. Hoffman, Tom Tregenza, Nina Wedell & David J. Hosken
Understanding selection in the wild remains a major aim of evolutionary ecology and work by Ford and colleagues on the meadow brown butterfly Maniola jurtina did much to ignite this agenda. A great deal of their work was conducted during the 1950s on the Isles of Scilly. They documented island-specific wing-spot patterns that remained consistent over about a decade, but patterns on some islands changed after environmental perturbation. It was suggested that these wing-spot patterns...

Data from: Consequences of mating with siblings and nonsiblings on the reproductive success in a leaf beetle

Thorben Müller & Caroline Müller
Choosing a suitable mating partner is crucial for the fitness of an individual, whereby mating with siblings often results in inbreeding depression. We studied consequences of mating with siblings versus nonsiblings in the mustard leaf beetle, Phaedon cochleariae (Coleoptera: Chrysomelidae), on lifetime reproductive traits. Furthermore, we analyzed whether cuticular hydrocarbon (CHC) profiles are family specific and could potentially influence the mating behavior of young adults. We hypothesized a reduced reproductive success of females mated with...

Registration Year

  • 2016
    12

Resource Types

  • Dataset
    12

Affiliations

  • Bielefeld University
    12
  • British Antarctic Survey
    2
  • Institute of Avian Research
    2
  • University of Adelaide
    1
  • Centre d'Ecologie Fonctionnelle et Evolutive
    1
  • University of Washington
    1
  • Lund University
    1
  • University of Groningen
    1
  • University of Aberdeen
    1
  • University of Extremadura
    1