83 Works

Experimentally increased brood size accelerates actuarial senescence and increases subsequent reproductive effort in a wild bird population

Jelle Boonekamp, Christina Bauch & Simon Verhulst
1. The assumption that reproductive effort decreases somatic state, accelerating ageing, is central to our understanding of life-history variation. Maximal reproductive effort early in life is predicted to be maladaptive by accelerating ageing disproportionally, decreasing fitness. 2. Optimality theory predicts that reproductive effort is restrained early in life to balance the fitness contribution of reproduction against the survival cost induced by the reproductive effort. When adaptive, the level of reproductive restraint is predicted to be...

Data and code from: Phytoplankton thermal responses adapt in the absence of hard thermodynamic constraints

Dimitrios-Georgios Kontopoulos, Erik Van Sebille, Michael Lange, Gabriel Yvon-Durocher, Timothy G. Barraclough & Samraat Pawar
To better predict how populations and communities respond to climatic temperature variation, it is necessary to understand how the shape of the response of fitness-related rates to temperature evolves (the thermal performance curve). Currently, there is disagreement about the extent to which the evolution of thermal performance curves is constrained. One school of thought has argued for the prevalence of thermodynamic constraints through enzyme kinetics, whereas another argues that adaptation can—at least partly—overcome such constraints....

A meta-analysis of biological impacts of artificial light at night

Dirk Sanders, Enric Frago, Rachel Kehoe, Christophe Patterson & Kevin Gaston
This is a database of published studies, that measuered how the exposure to artificial light at night impacts the physiology, daily activity patterns and life-history traits. The data were collected using a systematic review with searches in Web of Science and Scopus. We also provide the R-code that was used to analyse the dataset with meta-analytic models in MCMCglmm.

Data from: Mercury exposure in an endangered seabird: long-term changes and relationships with trophic ecology and breeding success

William Mills, Paco Bustamante, Rona McGill, Orea Anderson, Stuart Bearhop, Yves Cherel, Stephen Votier & Richard Phillips
Mercury (Hg) is an environmental contaminant which, at high concentrations, can negatively influence avian physiology and demography. Albatrosses (Diomedeidae) have higher Hg burdens than all other avian families. Here, we measure total Hg (THg) concentrations of body feathers from adult grey-headed albatrosses (Thalassarche chrysostoma) at South Georgia. Specifically, we: (i) analyse temporal trends at South Georgia (1989–2013) and make comparisons with other breeding populations; (ii) identify factors driving variation in THg concentrations; and, (iii) examine...

Ocean acidification induces distinct transcriptomic responses across life history stages of the sea urchin Heliocidaris erythrogramma

Hannah Devens, Phillip Davidson, Dione Deaker, Kathryn Smith, Maria Byrne & Gregory Wray
Ocean acidification (OA) from seawater uptake of rising carbon dioxide emissions impairs development in marine invertebrates, particularly in calcifying species. Plasticity in gene expression is thought to mediate many of these physiological effects, but how these responses change across life history stages remains unclear. The abbreviated lecithotrophic development of the sea urchin Heliocidaris erythrogramma provides a valuable opportunity to analyze gene expression responses across a wide range of life history stages, including the benthic, post-metamorphic...

Evaluating spatially explicit sharing-sparing scenarios for multiple environmental outcomes

Tom Finch, Brett Day, Dario Massimino, John Redhead, Rob Field, Andrew Balmford, Rhys Green & Will Peach
1. Understanding how to allocate land for the sustainable delivery of multiple, competing objectives is a major societal challenge. The land sharing-sparing framework presents a heuristic for understanding the trade-off between food production and biodiversity conservation by comparing region-wide land use scenarios which are equivalent in terms of overall food production. 2. Here, for two contrasting regions of lowland England (The Fens and Salisbury Plain), we use empirical data and predictive models to compare a...

Trophic resource partitioning drives fine-scale coexistence in cryptic bat species

Orly Razgour, Roberto Novella-Fernandez, Carlos Ibáñez, Javier Juste, Beth Clare & C. Patrick Doncaster
Understanding the processes that enable species coexistence has important implications for assessing how ecological systems will respond to global change. Morphology and functional similarity increase the potential for competition, and therefore, co-occurring morphologically similar but genetically unique species are a good model system for testing coexistence mechanisms. We used DNA metabarcoding and High Throughput Sequencing to characterise for the first time the trophic ecology of two recently-described cryptic bat species with parapatric ranges, Myotis escalerai...

Code for: Threshold assessment, categorical perception, and the evolution of reliable signaling

James Peniston, Patrick Green, Matthew Zipple & Stephen Nowicki
Animals often use assessment signals to communicate information about their quality to a variety of receivers, including potential mates, competitors, and predators. But what maintains reliable signaling and prevents signalers from signaling a better quality than they actually have? Previous work has shown that reliable signaling can be maintained if signalers pay fitness costs for signaling at different intensities and these costs are greater for lower quality individuals than higher quality ones. Models supporting this...

Choice consequences: salinity preferences and hatchling survival in the mangrove rivulus fish (Kryptolebias marmoratus)

Shelly C. McCain, Sydney Kopelic, Thomas M. Houslay, Alastair J. Wilson, Huanda Lu & Ryan L. Earley
In heterogeneous environments, mobile species should occupy habitats in which their fitness is maximized. Mangrove rivulus fish inhabit mangrove ecosystems where salinities range from 0 to 65 ppt, but are most often collected at ∼25 ppt. We examined the salinity preference of mangrove rivulus in a lateral salinity gradient, in the absence of predators and competitors. Fish could swim freely for 8 h throughout the gradient with chambers containing salinities ranging from 5 to 45...

Data from: Network structure and the optimisation of proximity-based association criteria

Ana Cristina Gomes, Neeltje Boogert & Gonçalo Cardoso
Animal social network analysis (SNA) often uses proximity data obtained from automated tracking of individuals. Identifying associations based on proximity requires deciding on quantitative criteria such as the maximum distance or the longest time interval between visits of different individuals to still consider them associated. These quantitative criteria are not easily chosen based on a priori biological arguments alone. Here we propose a procedure for optimising proximity-based association criteria in SNA, whereby different spatial and...

Data from: Small coastal streams – critical reservoirs of genetic diversity for brown trout in the face of increasing anthropogenic stressors

Andrew King, Jamie Stevens & Bruce Stockley
We used microsatellite markers to investigate levels and structuring of genetic diversity in trout (Salmo trutta L.) sampled from 16 rivers along the south coast of Cornwall in southwest England. This region is characterised by many small coastal streams with a few larger catchments. At a regional level, genetic structuring of contemporary populations has been influenced by a combination of events, including the last Ice Age and also more recent human activities over the last...

Consistent measures of oxidative balance predict survival but not reproduction in a long-distance migrant

Thomas Bodey, Ian Cleasby, Jonathan Blount, Graham McElwaine, Freydis Vigfusdottir & Stuart Bearhop
1. Physiological processes, including those that disrupt oxidative balance, have been proposed as key to understanding fundamental life history trade-offs. Yet examination of changes in oxidative balance within wild animals across time, space and major life history challenges remain uncommon. For example, migration presents substantial physiological challenges for individuals, and data on migratory individuals would provide crucial context for exposing the importance of relationships between oxidative balance and fitness outcomes. 2. Here we examined the...

Data from: Contrasting the seasonal and elevational prevalence of generalist avian haemosporidia in co-occurring host species

Josh Lynton-Jenkins & Camille Bonneaud
Understanding the ecology and evolution of parasites is contingent on identifying the selection pressures they face across their infection landscape. Such a task is made challenging by the fact that these pressures will likely vary across time and space, as a result of seasonal and geographical differences in host susceptibility or transmission opportunities. Avian haemosporidian blood parasites are capable of infecting multiple co-occurring hosts within their ranges, yet whether their distribution across time and space...

Isotopic and morphologic proxies for reconstructing light environment from fossil leaves: a modern calibration in the Daintree Rainforest, Australia

Alexander Cheesman, Heather Duff, Kathryn Hill, Lucas Cernusak & Francesca McInerney
Premise: Within closed canopy forests, vertical gradients of light and atmospheric CO 2 drive variations in leaf carbon isotope ratios, leaf mass per area (LMA), and the micromorphology of leaf epidermal cells. Variations in such traits observed in preserved or fossilized leaves could enable inferences of past forest canopy closure and the habitat of individual taxa. However, as yet no calibration study has examined how multiple traits in combination reflect position within a modern closed...

Effects of food availability on the trophic niche of the hazel dormouse Muscardinus avellanarius

Cecily E. D. Goodwin, George J. F. Swan, David J. Hodgson, Sallie Bailey, Paul Chanin & Robbie McDonald
The scale at which variations in food availability affect the foraging habits of individual animals can determine how the distribution of food resources affects populations. For species of conservation concern, these factors can have important implications for the management of habitats, as spatial and temporal variations in resource availability influence the trophic ecology of both individuals and populations. The hazel dormouse Muscardinus avellanarius is a species with seasonal dietary shifts and limited ranging, and whose...

Historical translocations and stocking alter the genetic structure of a Mediterranean lobster fishery

Tom Jenkins, Charlie Ellis, Eric Durieux, Jean-José Filippi, Jérémy Bracconi & Jamie Stevens
Stocking is often used to supplement wild populations that are overexploited or have collapsed, yet it is unclear how this affects the genetic diversity of marine invertebrate populations. During the 1970s, a lobster stock enhancement programme was carried out around the island of Corsica in the Mediterranean using individuals translocated from the Atlantic coast of France. This included the release of thousands of hatchery-reared post-larval lobsters and several adult individuals, but no monitoring plan was...

Effects of trading networks on the risk of bovine tuberculosis incidents on cattle farms in Great Britain

Helen Fielding, Trevelyan McKinley, Richard Delahay, Matthew Silk & Robbie McDonald
Trading animals between farms and via markets can provide a conduit for spread of infections. By studying trading networks we might better understand the dynamics of livestock diseases. We constructed ingoing contact chains of cattle farms in Great Britain that were linked by trading, to elucidate potential pathways for the transmission of infection, and to evaluate their effect on the risk of a farm experiencing a bovine tuberculosis (bTB) incident. Our findings are consistent with...

Evolution of ammonia-oxidizing archaea related to global events

Yiyan Yang, Chuanlun Zhang, Timothy Lenton, Xinmiao Yan, Maoyan Zhu, Jianchang Tao, Tommy Phelps & Zhiwei Cao
Ammonia-oxidizing archaea (AOA) are chemolithoautotrophs that dominate nitrification in today’s low ammonium ocean, playing critical roles in the global nitrogen cycle, alongside ammonia-oxidizing bacteria (AOB) that favor higher ammonium environments. Nitrification may have occurred soon after the origin of oxygenic photosynthesis and provided fundamental nutrients for the emergence of eukaryotic organisms in the Proterozoic; however, the timing of biological evidence remains unclear. Here we show using phylogenetic models that AOA occurred ~1,165 (1,928-880) Mya in...

Fungal and Oomycete cardinal temperatures (the Togashi dataset)

Daniel Bebber, Thomas Chaloner & Sarah Gurr
We collated and analysed temperature responses, specifically the minimum (Tmin), optimum (Topt) and maximum (Tmax) temperatures that comprise the ‘cardinal temperatures’, of various biological processes for 695 plant-associated microbes (631 fungi and 64 oomycetes) reported in "Togashi, K. (1949). Biological characters of plant pathogens: temperature relations. Meikundo". Cardinal temperatures can be used to derive temperature response functions, or thermal performance curves, using mathematical forms such as the beta function. The biological processes for which cardinal...

Data from: The size, symmetry, and color saturation of a male guppy’s ornaments forecast his resistance to parasites

Jessica Stephenson, Martin Stevens, Jolyon Troscianko & Jukka Jokela
Sexually selected ornaments range from highly dynamic traits to those that are fixed during development and relatively static throughout sexual maturity. Ornaments along this continuum differ in the information they provide about the qualities of potential mates, such as their parasite resistance. Dynamic ornaments enable real-time assessment of the bearer’s condition: they can reflect an individual’s current infection status, or resistance to recent infections. Static ornaments, however, are not affected by recent infection but may...

Offspring sex-ratios are stable across the life-course in Drosophila simulans

C. Ruth Archer, Matthew Carey, Tomohito Noda, Stefan Store & David Hosken
Within populations, adult sex ratios influence population growth and extinction risk, mating behaviors and parental care. Additionally, sex ratio adjustment can have pronounced effects on individual fitness. Accordingly, it is important that we understand how often, and why, offspring sex ratios deviate from parity. In Drosophila melanogaster, females appear to improve their fitness by producing fewer sons when paired with older males. However, facultative sex ratio adjustment in D. melanogaster is controversial, and our understanding...

Data from: Oxidative stress experienced during early development influences the offspring phenotype

Ana Angela Romero Haro & Carlos Alonso-Alvarez
Oxidative stress (OS) experienced early in life can affect an individual’s phenotype. However, its consequences for the next generation remain largely unexplored. We manipulated the OS level endured by zebra finches (Taeniopygia guttata) during their development by transitorily inhibiting the synthesis of the key antioxidant glutathione (‘early-high-OS’). The offspring of these birds and control parents were cross-fostered at hatching to enlarge or reduce its brood size. Independently of parents’ early-life OS levels, the chicks raised...

Temperature-mediated plasticity in incubation schedules is unlikely to evolve to buffer embryos from climatic challenges in a seasonal songbird

Alexandra Cones, Andrea Liebl, Thomas Houslay & Andrew Russell
Phenotypic plasticity is hypothesised to facilitate adaptive responses to challenging conditions, such as those resulting from climate change. However, the key predictions of this ‘rescue hypothesis’, that variation in plasticity exists and can evolve to buffer unfavourable conditions, remain rare. Here, we investigate among-female variation in temperature-mediated plasticity of incubation schedules and consequences for egg temperatures using the chestnut-crowned babbler (Pomatostomus ruficeps) from temperate regions of inland south-eastern Australia. Given phenological advances in this seasonal...

Quantifying selection on standard metabolic rate and body mass in Drosophila melanogaster

Howard D Rundle, Mathieu Videlier, Vincent Careau & Alastair Wilson
Standard metabolic rate (SMR), defined as the minimal energy expenditure required for self-maintenance, is a key physiological trait. Few studies have estimated its relationship with fitness, most notably in insects. This is presumably due to the difficulty of measuring SMR in a large number of very small individuals. Using high-throughput flow-through respirometry and a Drosophila melanogaster laboratory population adapted to a life-cycle that facilitates fitness measures, we quantified SMR, body mass, and fitness in 515...

Data from: Age-related variation in the trophic characteristics of a marsupial carnivore, the Tasmanian devil Sarcophilus harrisii

Olivia Bell, Menna E. Jones, Manuel Ruiz Aravena, Rodrigo K. Hamede-Ross, Stuart Bearhop & Robbie A. McDonald
Age-related changes in diet have implications for competitive interactions and for predator-prey dynamics, affecting individuals and groups at different life stages. To quantify patterns of variation and ontogenetic change in the diets of Tasmanian devils Sarcophilus harrisii, a threatened marsupial carnivore, we analysed variation in the stable isotope composition of whisker tissue samples taken from 91 individual devils from Wilmot, Tasmania from December 2014 to February 2017. Both δ¹³C and δ¹⁵N decreased with increasing age...

Registration Year

  • 2020

Resource Types

  • Dataset


  • University of Exeter
  • University of Cambridge
  • University of Oxford
  • Duke University
  • Museu Paraense Emílio Goeldi
  • Australian National University
  • British Antarctic Survey
  • Imperial College London
  • Estación Biológica de Doñana
  • University of Groningen