11 Works

Divergence in plumage, voice, and morphology indicates speciation in Rufous-capped Warblers (Basileuterus rufifrons)

Alana Demko, Roberto Sosa-López, Richard Simpson, Stéphanie Doucet & Daniel Mennill
The biodiversity of the Neotropics is considerable, but it is likely underestimated owing to gaps in sampling effort and a focus on using morphological features of animals to determine species differences rather than divergence in their mating signals and behavior. Recent multi-trait analyses incorporating morphological, plumage, and vocal data have allowed for more accurate quantification of tropical biodiversity. We present a comprehensive study of morphological features, plumage, and vocalizations of the Neotropical resident Rufous-capped Warbler...

Rearing environment affects the genetic architecture and plasticity of DNA methylation in Chinook salmon

Clare Venney, Kyle Wellband & Daniel Heath
Genetic architecture and phenotypic plasticity are important considerations when studying trait variation within and among populations. Since environmental change can induce shifts in the genetic architecture and plasticity of traits, it is important to consider both genetic and environmental sources of phenotypic variation. While there is overwhelming evidence for environmental effects on phenotype, the underlying mechanisms are less clear. Variation in DNA methylation is a potential mechanism mediating environmental effects on phenotype due to its...

Reactions of Hydrazones and Hydrazides with Lewis Acidic Boranes - data

Theodore A Gazis, Ayan Dasgupta, Michael S Hill, Jeremy M Rawson, Thomas Wirth & Rebecca L Melen
The reaction of (diphenylmethylene)hydrazone or 1,4-bis-hydraQ4 zone-ylidene(phenyl)methyl)benzene with Lewis acidic boranes B(2,4,6-F3C6H2)3 or B(3,4,5-F3C6H2)3 generates the Lewis acid– base adducts. Alternatively, when (9H-fluoren-9-ylidene)hydrazone is employed then several products were isolated including 1,2-di(9H-fluoren-9-ylidene)hydrazone, the 2 : 1 borane adduct of NH2–NH2 and the 1-(diarylboraneyl)-2-(9H-fluoren-9-ylidene) hydrazone in which one ArH group has been eliminated. The benzhydrazide starting material also initially gives an adduct when reacted with Lewis acidic boranes which upon heating eliminates ArH generating a CON2B...

Density dependence mediates the ecological impact of an invasive fish

Emma DeRoy, Ryan Scott, Nigel Hussey & Hugh MacIsaac
Aim: The way in which habitat heterogeneity and predator density affect predator-prey dynamics, space use, and prey risk are understudied aspects of foraging ecology, particularly for invasive species. Likewise, how an invasive species’ impact scales with its abundance is poorly understood. We used a model invasive species, lionfish (Pterois volitans), to understand effects of multiple predators on consumption rate and prey mortality risk, foraging among multiple patches. Location Florida, USA Methods We considered effects of...

Global port environmental data used for environmental distance calculations

Sarah Bailey, Johanna Bradie, Dawson Ogilvie & Paul Mudroch
This dataset contains a list of 8392 global commerical shipping ports, with geographic coordinates and four environmental variables (i.e. salinity, mean temperature during the warmest month, mean temperature during the coldest month and annual average temperature (all at water surface)). Data were primarily sourced from the U.S. National Oceanic and Atmospheric Administration World Ocean Atlas. Data for estuarine and riverine ports has been corrected, where better information was available, with particular focus on Canadian port...

Female and male song exhibit both parallel and divergent patterns of cultural evolution: a long-term study of song structure and diversity in tropical wrens

Brendan Graham, Daniel Heath & Daniel J Mennill
Animal culture changes over time through processes that include drift, immigration, selection, and innovation. Cultural change has been particularly well-studied for animal vocalizations, especially for the vocalizations of male animals in the temperate zone. Here we examine cultural change in the vocalizations of tropical Rufous-and-white Wrens (Thryophilus rufalbus), quantifying temporal variation in song structure, song type diversity, and population-level distribution of song types in both males and females. We use data from 10 microsatellite loci...

Snow bunting respirometry data

Ryan O'Connor, Audrey Le Pogam, Kevin Young, Francis Robitaille, Emily Choy, Oliver Love, Kyle Elliott, Anna Hargreaves, Dominique Berteaux, Andrew Tam & François Vézina
1. Arctic animals inhabit some of the coldest environments on the planet and have evolved physiological mechanisms for minimizing heat loss under extreme cold. However, the Arctic is warming faster than the global average and how well Arctic animals tolerate even moderately high air temperatures (Ta) is unknown. 2. Using flow-through respirometry we investigated the heat tolerance and evaporative cooling capacity of snow buntings (Plectrophenax nivalis; ≈ 31g, N = 42), a cold specialist, Arctic...

Sympatry drives colour and song divergence in wood-warblers (Parulidae)

Richard Simpson, David Wilson, Allison F. Mistakidis, Daniel Mennill & Stéphanie M. Doucet
Closely related species often exhibit similarities in appearance and behaviour, yet when related species exist in sympatry, signals may diverge to enhance species recognition. Prior comparative studies provided mixed support for this hypothesis, but the relationship between sympatry and signal divergence is likely non-linear. Constraints on signal diversity may limit signal divergence, especially when large numbers of species are sympatric. We tested the effect of sympatric overlap on plumage colour and song divergence in wood-warblers...

Exposure to exogenous egg cortisol does not rescue juvenile Chinook salmon body size, condition, or survival from the effects of elevated water temperatures

Theresa Warriner, Christina Semeniuk, Trevor Pitcher & Oliver Love
Climate change is leading to altered temperature regimes which are impacting aquatic life, particularly for ectothermic fish. The impacts of environmental stress can be translated across generations through maternally-derived glucocorticoids, leading to altered offspring phenotypes. Although these maternal stress effects are often considered negative, recent studies suggest this maternal stress signal may prepare offspring for a similarly stressful environment (environmental match). We applied the environmental match hypothesis to examine whether a prenatal stress signal can...

Population genomic response to geographic gradients by widespread and endemic fishes of the Arabian Peninsula

Joseph DiBattista, Pablo Saenz-Agudelo, Marek Piatek, Fernando Cagua, Brian Bowen, John Choat, Luiz Rocha, Michelle Gaither, Jean-Paul Hobbs, Tane Sinclair-Taylor, Jennifer McIlwain, Mark Priest, Camrin Braun, Nigel Hussey, Steven Kessel & Michael Berumen
Genetic structure within marine species may be driven by local adaptation to their environment, or alternatively by historical processes, such as geographic isolation. The gulfs and seas bordering the Arabian Peninsula offer an ideal setting to examine connectivity patterns in coral reef fishes with respect to environmental gradients and vicariance. The Red Sea is characterized by a unique marine fauna, historical periods of desiccation and isolation, as well as environmental gradients in salinity, temperature, and...

Dataset for: Spatial and environmental effects on Coho Salmon life-history trait variation

Kim Tuor, Daniel Heath & Mark Shrimpton
Adult size, egg mass, fecundity and mass of gonads are affected by trade-offs between reproductive investment and environmental conditions shaping the evolution of life-history traits among populations for widely distributed species. Coho salmon Oncorhynchus kisutch have a large geographic distribution and different environmental conditions are experienced by populations throughout their range. We examined the effect of environmental variables on female size, egg size, fecundity, and reproductive investment of populations of Coho Salmon from across British...

Registration Year

  • 2020

Resource Types

  • Dataset
  • Collection


  • University of Windsor
  • Fisheries and Oceans Canada
  • University of Bath
  • University of Washington
  • University of Queensland
  • McGill University
  • King Abdullah University of Science and Technology
  • Oak Ridge National Laboratory
  • Transport Canada
  • University of Northern British Columbia