62 Works

Embodying the postcolonial perverse: mestizXXX sadomasochist performance methodologies

Migueltzinta Solís
This paper is not intended as either a survey of performance and perversity nor as an argumentation for any particularly new theory of performance. Rather it is me offering my methodologies, influences and thoughts as a trans mestizXXX perverse performance artist living and working in an actively postcolonial moment. It is, in part, an act of resistance toward the move to commodify performance’s important ephemerality and ineffability into institutionally digestible historicity and study-ability within academic...

Digital 3D models and measurements of avian brain cavity, blood vessel and nerve endocasts

S. A. Walsh, A. N. Iwaniuk, M. A. Knoll, E. Bourdon, P. M. Barrett, A. Milner, R. Nudds, R. L. Abel & P. Dello Sterpaio
This dataset comprises cast reconstructions of brain cavity space in 60 extant avian species, derived from X-ray micro computed-tomography scan image stacks. Each reconstruction was made using Materialise Mimics 14.11 to create volumetric models (brain cavity casts) that were then transformed into the polygon mesh stereolithograph (STL) files archived here. Brain cavity cast models are in most cases accompanied by casts of main vascular features (e.g., carotid arteries) and the olfactory nerves (CN I). A...

Data from: Kin recognition: evidence that humans can perceive both positive and negative relatedness

Daniel B. Krupp, Lisa M. DeBruine, Benedict C. Jones & Martin L. Lalumière
The evolution of spite entails actors imposing costs on ‘negative’ relatives: those who are less likely than chance to share the actor’s alleles and therefore more likely to bear rival alleles. Yet, despite a considerable body of research confirming that organisms can recognise positive relatives, little research has shown that organisms can recognise negative relatives. Here, we extend previous work on human phenotype matching by introducing a cue to negative relatedness: negative self-resembling faces, which...

Data from: Offspring of older parents are smaller—but no less bilaterally symmetrical—than offspring of younger parents in the aquatic plant Lemna turionifera

Eric J. Ankutowicz & Robert A. Laird
Offspring quality decreases with parental age in many taxa, with offspring of older parents exhibiting reduced lifespan, reproductive capacity, and fitness, compared to offspring of younger parents. These ‘parental age effects’, whose consequences arise in the next generation, can be considered as manifestations of parental senescence, in addition to the more familiar age-related declines in parent-generation survival and reproduction. Parental age effects are important because they may have feedback effects on the evolution of demographic...

An analysis of avian vocal performance at the note and song levels

David Logue, Jacob Sheppard, Bailey Walton, Benjamin Brinkman & Orlando Medina
Sexual displays that require extreme feats of physiological performance have the potential to reliably indicate the signaller’s skill or motivation. We tested for evidence of performance constraints in Adelaide’s warblers (Setophaga adelaidae) songs. At the note level, we identified three trade-offs with well-defined limits. At the song level, we identified two trade-offs, but their limits were less well-defined than the note-level limits. Trade-offs at both levels suggest that song structure is constrained by limits to...

Coordinates activities of retrosplenial ensembles during resting-state encode spatial landmarks. Part 2 of 2

HaoRan Chang, Ingrid M. Esteves, Adam R. Neumann, Jianjun Sun, Majid H. Mohajerani & Bruce L. McNaughton
The brain likely uses off-line periods to consolidate recent memories. One hypothesis holds that the hippocampal output provides a unique, global linking or 'index' code for each memory, and that this code is stored in the cortex in association with locally encoded attributes of each memory. Activation of the index code is hypothesized to evoke coordinated memory trace reactivation thus facilitating consolidation. Retrosplenial cortex (RSC) is a major recipient of hippocampal outflow and we have...

Data from: Population genetic structure and its implications for adaptive variation in memory and the hippocampus on a continental scale in food-caching black-capped chickadees

Vladimir V. Pravosudov, , Matthew L. Forister, Lara D. LaDage, Theresa M. Burg, Michael J. Braun & Brian S. Davidson
Food-caching birds rely on stored food to survive the winter and spatial memory has been shown to be critical in successful cache recovery. Both spatial memory and the hippocampus, an area of the brain involved in spatial memory, exhibit significant geographic variation linked to climate-based environmental harshness and the potential reliance on food caches for survival. Such geographic variation has been suggested to have a heritable basis associated with differential selection. Here, we ask whether...

Data from: Specific 50-kHz vocalizations are tightly linked to particular types of behavior in juvenile rats anticipating play

Candace J. Burke, Theresa M. Kisko, Hilarie Swiftwolfe, Sergio M. Pellis & David R. Euston
Rat ultrasonic vocalizations have been suggested to be either a byproduct of physical movement or, in the case of 50-kHz calls, a means to communicate positive affect. Yet there are up to 14 distinct types of 50-kHz calls, raising issues for both explanations. To discriminate between these theories and address the purpose for the numerous 50-kHz call types, we studied single juvenile rats that were waiting to play with a partner, a situation associated with...

Data from: Senescence in duckweed: age-related declines in survival, reproduction, and offspring quality

Patrick M. Barks & Robert A. Laird
1. As they grow old, most organisms experience progressive physiological deterioration resulting in declining rates of survival and reproduction – a seemingly maladaptive phenomenon known as senescence. 2. Although senescence is usually defined with respect only to survival and reproduction, a third component of fitness, offspring quality, may also decline with age. Few studies, however, have assessed age-related changes in offspring quality using measures that truly reflect fitness. 3. In a controlled environment, we tested...

Commodity canola insect visitation

Samuel Robinson, Shelley Hoover, Stephen Pernal & Ralph Cartar
These data were used in a simulation study to examine how honey bees distribute themselves across foraging landscapes. The ideal-free distribution and central-place foraging are important ecological models that can explain the distribution of foraging organisms in their environment. However, this model ignores distance-based foraging costs from a central place (hive, nest), while central-place foraging ignores competition. Different foraging currencies and cooperation between foragers also create different optimal distributions of foragers, but are limited to...

Acquisition of object-robbing and object/food-bartering behaviors: A culturally maintained token economy in free-ranging long-tailed macaques

Jean-Baptiste Leca, Noëlle Gunst, Matthew Gardiner & I Nengah Wandia
The token exchange paradigm shows that monkeys and great apes are able to use objects as symbolic tools to request specific food rewards. Such studies provide insights into the cognitive underpinnings of economic behavior in non-human primates. However, the ecological validity of these lab-based experimental situations tends to be limited. Our field research aims to address the need for a more ecologically valid primate model of trading systems in humans. Around the Uluwatu Temple in...

Data from: Recombinant DNA modification of gibberellin metabolism alters growth rate and biomass allocation in Populus

Haiwei Lu, Venkatesh Viswanath, Cathleen Ma, Elizabeth Etherington, Palitha Dharmawardhana, Olga Shevchenko, Steven H. Strauss, David W. Pearce, Stewart B. Rood & Victor Busov
Overexpression of genes that modify gibberellin (GA) metabolism and signaling have been previously shown to produce trees with improved biomass production but highly disturbed development. To examine if more subtle types of genetic modification of GA could improve growth rate and modify tree architecture, we transformed a model poplar genotype (Populus tremula × P. alba) with eight genes, including two cisgenes (intact copies of native genes), four intragenes (modified copies of native genes), and two...

Data from: Primates adjust movement strategies due to changing food availability

Rafael Reyna-Hurtado, Julie A. Teichroeb, Tyler R. Bonnell, Raul Uriel Hernández-Sarabia, Sofia M. Vickers, Juan Carlos Serio-Silva, Pascale Sicotte & Colin A. Chapman
Animals are hypothesized to search their environments in predictable ways depending on the distribution of resources. Evenly distributed foods are thought to be best exploited with random Brownian movements; while foods that are patchy or unevenly distributed require non-Brownian strategies, such as Lévy walks. Thus, when food distribution changes due to seasonal variation, animals should show concomitant changes in their search strategies. We examined this issue in six monkey species from Africa and Mexico: three...

Data from: Landscape effects on the contemporary genetic structure of Ruffed Grouse (Bonasa umbellus) populations

Ashley M. Jensen, Nicholas P. O'Neil, Andrew N. Iwaniuk & Theresa M. Burg
The amount of dispersal that occurs among populations can be limited by landscape heterogeneity, which is often due to both natural processes and anthropogenic activity leading to habitat loss or fragmentation. Understanding how populations are structured and mapping existing dispersal corridors among populations is imperative to both determining contemporary forces mediating population connectivity, and informing proper management of species with fragmented populations. Furthermore, the contemporary processes mediating gene flow across heterogeneous landscapes on a large...

Data from: Influence of landscape features on the microgeographic genetic structure of a resident songbird.

Rachael V. Adams, Stefanie E. LaZerte, Ken A. Otter & Theresa M. Burg
Landscape features influence individual dispersal and as a result can affect both gene flow and genetic variation within and between populations. The landscape of British Columbia, Canada, is already highly heterogeneous due to natural ecological and geological transitions, but disturbance from human-mediated processes has further fragmented continuous habitat, particularly in the central plateau region. In this study, we evaluated the effects of landscape heterogeneity on the genetic structure of a common resident songbird, the black-capped...

Riparian cottonwood trees and adjacent river sediments have different microbial communities and produce methane with contrasting carbon isotope compositions

Kristian M Smits, Daniel S Grant, Sarah Ellen Johnston, Matthew J Bogard, Stewart B Rood, L Brent Selinger & Lawrence B Flanagan
Rivers and their adjacent riparian forests are intimately linked by the exchange of water, nutrients, and organic matter. Both riparian cottonwood trees and adjacent river sediments host microbial communities including archaeal methanogens, supporting methane production and emission to the atmosphere. Here we combine microbial community and stable isotope analyses to characterize the drivers of methane cycling in distinct anoxic habitats (river sediments versus riparian cottonwood stems) in the Oldman River, southern Alberta (Canada). We demonstrate...

Quantitative anatomy of the cerebellum on chickens and junglefowl

Andrew Iwaniuk
Domestication is the process by which wild organisms become adapted for human use. Many phenotypic changes are associated with animal domestication, including decreases in brain and brain region sizes. In contrast to this pattern, the chicken has a larger cerebellum compared with the wild red junglefowl, but what neuroanatomical changes are responsible for this difference have yet to be investigated. Here, we quantified cell layer volumes, neuron numbers and neuron sizes in the cerebella of...

Neural ensemble reactivation in REM and SWS coordinate with muscle activity to promote rapid motor skill learning

Michael Eckert, Bruce McNaughton & Masami Tatsuno
Neural activity patterns of recent experiences are reactivated during sleep in structures critical for memory storage, including hippocampus and neocortex. This reactivation process is thought to aid memory consolidation. Although synaptic rearrangement dynamics following learning involve an interplay between slow-wave sleep (SWS) and rapid eye movement sleep (REM), most physiological evidence implicates SWS directly following experience as a preferred window for reactivation. Here we show that reactivation occurs in both REM and SWS, and that...

Microsatellite genotyping data for habitat-linked genetic structure for white-crowned sparrow (Zonotrichia leucophrys): local factors shape population genetic structure

Brendan Graham
Ecological, environmental, and geographic factors all influence genetic structure. Species with broad distributions are ideal systems because they cover a range of ecological and environmental conditions allowing us to test which components predict genetic structure. This study presents a novel, broad geographic approach using molecular markers, morphology, and habitat modelling to investigate rangewide and local barriers causing contemporary genetic differentiation within the geographical range of three white-crowned sparrow (Zonotrichia leucophrys) subspecies: Z. l. gambelii, Z....

Data for: Comparing the effect of landscape context on vascular plant and bryophyte communities in a human-dominated landscape

Jenny McCune
Aims: It is important to understand the effect of landscape context on biological communities to predict how biodiversity will be affected on human-dominated landscapes. While many studies have tested the effects of landscape context on the species richness and composition of vascular plants, few have compared the responses of vascular plants and bryophytes on the same landscape. We sampled non-epiphytic bryophytes and vascular plants in 184 plots to test whether three landscape context factors measured...

rhinoceros auklet microsatellite data

Theresa Burg, Marie Prill, Katharine Studholme, Alice Domalik, Strahan Tucker, Catherine Jardine, Mark Maftei, Kenneth Wright, Jesse Beck, Russell Bradley, Ryan Carle, Thomas Good, Scott Hatch, Peter Hodum, Motohiro Ito, Scott Pearson, Nora Rojek, Leslie Slater, Yutaka Watanuki, Alexis Will, Aidan Bindoff, Glenn Crossin, Mark Drever & Mark Hipfner
We tested the hypothesis that segregation in wintering areas promotes population differentiation in a sentinel North Pacific seabird, the rhinoceros auklet (Cerorhinca monocerata). We collected tissue samples for genetic analyses on five breeding colonies in the western Pacific Ocean (Japan) and 13 in the eastern Pacific Ocean (California to Alaska), and deployed light-level geologgers on 12 eastern Pacific colonies to delineate wintering areas. Loggers were deployed previously on one colony in Japan. There was strong...

Black-capped and mountain chickadee range-wide condition

Kathryn Grabenstein, Scott Taylor, Ken Otter & Theresa Burg
Both abiotic and biotic drivers influence species distributions. Abiotic drivers, such as climate, have received considerable attention, even though biotic drivers, such as hybridization, often interact with abiotic drivers. We sought to explore the (1) costs of co-occurrence for ecologically similar species that hybridize and (2) associations between ecological factors and condition to understand how abiotic and biotic factors influence species distributions. For two closely related and ecologically similar songbirds, black-capped and mountain chickadees, we...

Effects of chronic THC in adolescence on rat play behaviours

Robin Keeley, Stephanie Himmler, Sergio Pellis & Robert McDonald
Background: Cannabis use remains a major public health concern, and its use typically begins in adolescence. Chronic administration of ∆9-tetrahydrocannabinol (THC), the main psychoactive compound in cannabis, during adolescence can produce deficits in adult learning and memory, stress reactivity and anxiety. One possible mechanism behind the disruptions in adulthood from adolescent exposure to THC includes changes in social behaviours, such as social play, which has been shown to be critical to socio-cognitive development. Methods: Here,...

Data from: Numerical ordinality in a wild nectarivore

Maria Cristina Tello-Ramos, Tas I. F. Vámos, T. Andrew Hurly & Susan D. Healy
Ordinality is a numerical property that nectarivores may use to remember the specific order in which to visit a sequence of flowers, a foraging strategy also known as traplining. In this experiment, we tested whether wild, free-living rufous hummingbirds (Selasphorus rufus) could use ordinality to visit a rewarded flower. Birds were presented with a series of linear arrays of 10 artificial flowers; only one flower in each array was rewarded with sucrose solution. During training,...

Cryptic genetic diversity and cytonuclear discordance characterize contact among Canada jay (Perisoreus canadensis) morphotypes in western North America

Brendan Graham
Three distinct Canada jay (Perisoreus canadensis) morphotypes with easily recognizable plumage traits come into contact in western North America. Recent work demonstrated high genetic structure across the species’ range; however, patterns of genetic variation in these contact zones remain unknown. We categorized 605 individuals into one of three morphotypes (Pacific, Rocky Mountain, and Boreal) based on plumage, and genotyped individuals at the mtDNA control region and 12 microsatellite loci to assess the extent of hybridization...

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