35 Works

Data from: Effects of soil resources on expression of a sexual conflict over timing of stigma receptivity in a mixed-mating plant

Asa Lankinen & Sofia Hydbom
While environmental factors strongly influence plant growth and reproduction, less is known about environmental effects on sexual selection and sexual conflict. In this study on mixed-mating Collinsia heterophylla we investigated whether soil resource environment affected traits associated with sexual conflict. In C. heterophylla a sexual conflict over timing of stigma receptivity occurs. Early stigma receptivity benefits pollen parents by securing paternity while late stigma receptivity benefits female fitness in terms of increased seed production. We...

Data from: Activity and migratory flights of individual free-flying songbirds throughout the annual cycle: method and first case study

Johan Bäckman, Arne Andersson, Thomas Alerstam, Lykke Pedersen, Sissel Sjöberg, Kasper Thorup & Anders P. Tøttrup
We describe a method and device (< 1.2 g) for recording, processing and storing data about activity and location of individuals of free-living songbirds throughout the annual cycle. Activity level was determined every five minutes from five 100 ms samples of accelerometer data with 5 s between the sampling events. Activity levels were stored on an hourly basis throughout the annual cycle, allowing periods of resting/sleep, continuous flight and intermediate activity (foraging, breeding) to be...

Data from: Parallel telomere shortening in multiple body tissues owing to malaria infection

Muhammad Asghar, Vaidas Palinauskas, Nadège Zaghdoudi-Allan, Gediminas Valkiūnas, Andrey Mukhin, Elena Platonova, Anna Färnert, Staffan Bensch & Dennis Hasselquist
Several studies have shown associations between shorter telomere length in blood and weakened immune function, susceptibility to infections, and increased risk of morbidity and mortality. Recently, we have shown that malaria accelerates telomere attrition in blood cells and shortens lifespan in birds. However, the impact of infections on telomere attrition in different body tissues within an individual is unknown. Here, we tested whether malarial infection leads to parallel telomere shortening in blood and tissue samples...

Data from: Body temperature regulation in hot environments

Jan-Åke Nilsson, Mary Ngozi Molokwu & Ola Olsson
Organisms in hot environments will not be able to passively dissipate metabolically generated heat. Instead, they have to revert to evaporative cooling, a process that is energetically expensive and promotes excessive water loss. To alleviate these costs, birds in captivity let their body temperature increase, thereby entering a state of hyperthermia. Here we explore the use of hyperthermia in wild birds captured during the hot and dry season in central Nigeria. We found pronounced hyperthermia...

Data from: Experimental contact zones reveal causes and targets of sexual selection in hybridizing lizards

Hannah E. A. MacGregor, Geoffrey M. While, Jade Barrett, Guillem Pérez I De Lanuza, Pau Carazo, Sozos Michaelides & Tobias Uller
Divergence in sexually selected traits in allopatry should affect the degree and direction of hybridization. However, few studies have established the causes and targets of sexual selection during secondary contact. Common wall lizards (Podarcis muralis) from north-central Italy have highly exaggerated male sexual traits compared to populations in Western Europe. Using experimental populations, we show that this creates asymmetries in male dominance, spatial habitat use and reproductive success upon secondary contact. Hybridization occurred almost exclusively...

Data from: Enhanced flight performance by genetic manipulation of wing shape in Drosophila

Robert P. Ray, Toshiyuki Nakata, Per Henningsson & Richard J. Bomphrey
Insect wing shapes are remarkably diverse and the combination of shape and kinematics determines both aerial capabilities and power requirements. However, the contribution of any specific morphological feature to performance is not known. Using targeted RNA interference to modify wing shape far beyond the natural variation found within the population of a single species, we show a direct effect on flight performance that can be explained by physical modelling of the novel wing geometry. Our...

Data from: Morphology-function relationships and repeatability in the sperm of Passer sparrows

Emily R.A. Cramer, Terje Laskemoen, Even Stensrud, Melissah Rowe, Fredrik Haas, Jan T. Lifjeld, Glenn-Peter Sætre, Arild Johnsen & Glenn-Peter Saetre
Sperm performance is likely to be an important determinant of male reproductive success, especially when females copulate with multiple males. Understanding sperm performance is therefore crucial to fully understand the evolution of male reproductive strategies. In this study, we examined the repeatability of sperm morphology and motility measures over three breeding seasons, and we studied relationships between sperm morphology and function. We conducted this study in wild-derived captive house sparrows (Passer domesticus) and Spanish sparrows...

Data from: Urban environment shortens telomere length in nestling great tits, Parus major

Pablo Salmón, Johan F. Nilsson, Andreas Nord, Staffan Bensch & Caroline Isaksson
Urban environments are expanding rapidly, and with urbanization come both challenges and opportunities for wildlife. Challenges include combating the anthropogenic disturbances such as light, noise and air pollution and lower availability of natural food sources. The benefits are many, including the availability of anthropogenic food sources, breeding boxes and warmer temperatures. Thus, depending on the context, urbanization can have both positive and negative effects on fitness related traits. It is well known that early-life conditions...

Data from: Interspecific interactions and learning variability jointly drive geographic differences in mate preferences

Machteld N. Verzijden & Erik I. Svensson
Co-occurrence of closely related species can cause behavioral interference in mating and increase hybridization risk. Theoretically, this could lead to the evolution of more species-specific mate preferences and sexual signaling traits. Alternatively, females can learn to reject heterospecific males, to avoid male sexual interference from closely related species. Such learned mate discrimination could also affect conspecific mate preferences if females generalize from between species differences to prefer more species-specific mating signals. Female damselflies of the...

Data from: Evidence of weaker phenotypic plasticity by prey to novel cues from non-native predators

Johan Hollander & Paul E. Bourdeau
A central question in evolutionary biology is how coevolutionary history between predator and prey influences their interactions. Contemporary global change and range expansion of exotic organisms impose a great challenge for prey species, which are increasingly exposed to invading non-native predators, with which they share no evolutionary history. Here, we complete a comprehensive survey of empirical studies of coevolved and naive predator−prey interactions to assess whether a shared evolutionary history with predators influences the magnitude...

Registration Year

  • 2016

Resource Types

  • Dataset


  • Lund University
  • Swedish University of Agricultural Sciences
  • University of Tasmania
  • University of Oxford
  • University of Oslo
  • Swiss Ornithological Institute
  • University of Helsinki
  • Dartmouth College
  • Wageningen University & Research
  • Karolinska Institute