7 Works

Data from: Contrasting effects of large density changes on relative testes size in fluctuating populations of sympatric vole species

Ines Klemme, Carl D. Soulsbury & Heikki Henttonen
Across species, there is usually a positive relationship between sperm competition level and male reproductive effort on ejaculates, typically measured using relative testes size (RTS). Within populations, demographic and ecological processes may drastically alter the level of sperm competition and thus, potentially affect the evolution of testes size. Here, we use longitudinal records (across 38 years) from wild sympatric Fennoscandian populations of five species of voles to investigate whether RTS responds to natural fluctuations in...

Data from: Limited indirect fitness benefits of male group membership in a lekking species

Christophe Lebigre, Rauno V. Alatalo, Carl D. Soulsbury, Jacob Höglund & Heli Siitari
In group living species, individuals may gain the indirect fitness benefits characterising kin selection when groups contain close relatives. However, tests of kin selection have primarily focused on cooperatively breeding and eusocial species, whereas its importance in other forms of group living remains to be fully understood. Lekking is a form of grouping where males display on small aggregated territories, which females then visit to mate. As females prefer larger aggregations, territorial males might gain...

Data from: Incubation time as an important influence on egg production and distribution into clutches for sauropod dinosaurs

Graeme D. Ruxton, Geoffrey F. Birchard & D. Charles Deeming
Individual egg size and clutch size of the largest of the dinosaurs (the sauropods) are both smaller than might be expected for such large oviparous organisms. We suggest that these effects can be understood in the light of likely incubation times of sauropod eggs. Using allometric relationships from extant birds and crocodilians, we estimate that time from laying to hatching was likely to have been 65–82 days. If total predation risk varies with length of...

Data from: Developmental temperature affects the expression of ejaculatory traits and the outcome of sperm competition in Callosobruchus maculatus

Ramachrishnan Vasudeva, Denis C. Deeming & Paul E. Eady
The outcome of post-copulatory sexual selection is determined by a complex set of interactions between the primary reproductive traits of two or more males and their interactions with the reproductive traits of the female. Recently a number of studies have shown the primary reproductive traits of both males and females express phenotypic plasticity in response to the thermal environment experienced during ontogeny. However, how plasticity in these traits affects the dynamics of sperm competition remains...

Data from: Egg shape changes at the theropod-bird transition, and a morphometric study of amniote eggs

D. Charles Deeming & Marcello Ruta
The eggs of amniotes exhibit a remarkable variety of shapes, from spherical to elongate and from symmetrical to asymmetrical. We examine eggshell geometry in a diverse sample of fossil and living amniotes using geometric morphometrics and linear measurements. Our goal is to quantify patterns of morphospace occupation and shape variation in the eggs of recent through to Mesozoic birds (neornithe plus non-neornithe avialans), as well as in eggs attributed to non-avialan theropods. In most amniotes,...

Data from: Density- and trait-mediated effects of a parasite and a predator in a tri-trophic food web

Aabir Banerji, Alison B. Duncan, Joanne S. Griffin, Stuart Humphries, Owen L. Petchey & Oliver Kaltz
1. Despite growing interest in ecological consequences of parasitism in food webs, relatively little is known about effects of parasites on long-term population dynamics of non-host species or about whether such effects are density- or trait- mediated. 2. We studied a tri-trophic food chain comprised of: (i) a bacterial basal resource (Serratia fonticola), (ii) an intermediate consumer (Paramecium caudatum), (iii) a top predator (Didinium nasutum), and (iv) a parasite of the intermediate consumer (Holospora undulata)....

Data from: Range-wide multilocus phylogeography of the red fox reveals ancient continental divergence, minimal genomic exchange, and distinct demographic histories

Mark J. Statham, Zhenghuan Wang, Carl D. Soulsbury, Jan Janecka, Benjamin N. Sacks, Keith B. Aubry, Oliver Berry, Ceiridwen J. Edwards & James Murdoch
Widely distributed taxa provide an opportunity to compare biogeographic responses to climatic fluctuations on multiple continents and to investigate speciation. We conducted the most geographically and genomically comprehensive study to date of the red fox (Vulpes vulpes), the world's most widely distributed wild terrestrial carnivore. Analyses of 697 bp of mitochondrial sequence in ~1000 individuals suggested an ancient Middle Eastern origin for all extant red foxes and a 400 kya (SD = 139 kya) origin...

Registration Year

  • 2014

Resource Types

  • Dataset


  • University of Lincoln
  • University of Jyväskylä
  • University of Vermont
  • Forest Research Institute
  • Duquesne University
  • Université Catholique de Louvain
  • University of Zurich
  • George Mason University
  • East China Normal University
  • University of St Andrews