7 Works

Data from: Predation risk drives the expression of mobbing across bird species

Filipe C.R. Cunha, Julio C.R. Fontenelle & Michael Griesser
Many species approach predators to harass and drive them away, even though mobbing a predator can be deadly. However, not all species display this behavior, and those that do can exhibit different behaviors while mobbing different predators. Here we experimentally assessed the role of social and ecological traits on the expression of mobbing behavior in a bird community in SE Brazil (n=157 species). We exposed birds to models of two morphologically similar diurnal owls that...

Data from: Paternity analysis of wild-caught females shows that sperm package size and placement influence fertilization success in the bushcricket Pholidoptera griseoaptera

Darren James Parker, Julia Zaborowska, Michael Gordon Ritchie & Karim Vahed
In species where females store sperm, males may try to influence paternity by the strategic placement of sperm within the female's sperm storage organ. Sperm may be mixed or layered in storage organs, and this can influence sperm use beyond a ‘fair raffle’. In some insects, sperm from different matings is packaged into discrete packets (spermatodoses), which retain their integrity in the female's sperm storage organ (spermatheca), but little is known about how these may...

Data from: Experimental evolution reveals that sperm competition intensity selects for longer, more costly sperm

Joanne L. Godwin, Ramakrishnan Vasudeva, Lukasz Michalczyk, Oliver Y. Martin, Alyson J. Lumley, Tracey Chapman & Matthew J. G. Gage
It is the differences between sperm and eggs that fundamentally underpin the differences between the sexes within reproduction. For males, it is theorized that widespread sperm competition leads to selection for investment in sperm numbers, achieved by minimizing sperm size within limited resources for spermatogenesis in the testis. Here, we empirically examine how sperm competition shapes sperm size, after more than 77 generations of experimental selection of replicate lines under either high or low sperm...

Data from: Sexual selection and population divergence II. divergence in different sexual traits and signal modalities in field crickets (Teleogryllus oceanicus)

Sonia Pascoal, Magdalena Mendrok, Alastair J. Wilson, John Hunt & Nathan W. Bailey
Sexual selection can target many different types of traits. However, the relative influence of different sexually-selected traits during evolutionary divergence is poorly understood. We used the field cricket Teleogryllus oceanicus to quantify and compare how five traits from each of three sexual signal modalities and components diverge among allopatric populations: male advertisement song, cuticular hydrocarbon (CHC) profiles and forewing morphology. Population divergence was unexpectedly consistent: we estimated the among-population (genetic) variance-covariance matrix, D, for all...

Data from: Cascading effects of changes in land use on the invasion of the walnut Juglans regia in forest ecosystems

Magdalena Lenda, Johannes H. Knops, Piotr Skórka, Dawid Moroń & Michał Woyciechowski
1. Plant invasions are affected by many factors that must be favourable in order for invasions to occur. Factors can be grouped into three major categories: propagule pressure, biotic factors and abiotic characteristics; all may be moderated by human activity. However, studies examining all factors simultaneously are rare, and most are limited to a single factor. This hampers our understanding of the mechanisms driving invasions. 2. In recent decades, an alien walnut (Juglans regia) has...

Data from: The Carpathians hosted extra-Mediterranean refugia-within-refugia during the Pleistocene Ice Age: genomic evidence from two newt genera

Ben Wielstra, Piotr ZieliŃski & WiesŁaw Babik
Part of Europe’s temperate species survived the Pleistocene glacial cycles in refugia north of the Mediterranean peninsulas. For one such extra-Mediterranean refugia, the Carpathians, an intricate ‘refugia-within-refugia’ scenario has been suggested, involving species surviving in multiple discrete glacial refugia. We test the Carpathian refugia-within-refugia hypothesis, employing genome-wide multilocus data sets for two newt species (Triturus cristatus and Lissotriton montandoni). We first use Bayesian clustering to delineate intraspecific evolutionary lineages. The number of intraspecific lineages identified,...

Data from: Day/night upper thermal limits differ within Ectatomma ruidum ant colonies

Annika S. Nelson, Trey Scott, Maciej Barczyk, Terrence P. McGlynn, Arian Avalos, Elizabeth Clifton, Amlan Das, Andreia Figueiredo, Laura L. Figueroa, Mark Janowiecki, Sarah Pahlke, Jignasha D. Rana & Sean O'Donnell
In the tropics, daily temperature fluctuations can pose physiological challenges for ectothermic organisms, and upper thermal limits may affect foraging activity over the course of the day. Variation in upper thermal limits can occur among and within species, and for social insects such as ants, within colonies. Within colonies, upper thermal limits may differ among individuals or change for an individual throughout the day. Daytime foragers of the Neotropical ant Ectatomma ruidum have higher critical...

Registration Year

  • 2017
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Resource Types

  • Dataset
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Affiliations

  • Jagiellonian University
    7
  • University of St Andrews
    2
  • George Washington University
    1
  • University of Cambridge
    1
  • University of Lausanne
    1
  • Polish Academy of Sciences
    1
  • University of Calcutta
    1
  • Texas A&M University
    1
  • Washington University in St. Louis
    1
  • University of East Anglia
    1