A5048912253- Avian ecology and behavior
- Plant and animal studies
- Animal Behavior and Reproduction
- Bird parasitology and diseases
- Insect and Pesticide Research
- Insect and Arachnid Ecology and Behavior
- Wildlife Ecology and Conservation
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Vector-borne infectious diseases
- Parasite Biology and Host Interactions
- Marine animal studies overview
- Isotope Analysis in Ecology
- Marine and fisheries research
- Animal Vocal Communication and Behavior
- Animal Nutrition and Physiology
- Mercury impact and mitigation studies
- Insect-Plant Interactions and Control
- Rangeland and Wildlife Management
- Evolution and Genetic Dynamics
- Study of Mite Species
- Insect symbiosis and bacterial influences
- Marine and environmental studies
- Geological Studies and Exploration
Acadia University
2015-2024
John Wiley & Sons (United States)
2018
Ecological Society of America
2018
University of Saskatchewan
1998-2004
United States Geological Survey
2004
Concordia University
1999
Carleton University
1989-1995
Western University
1995
Patterns of habitat use in animals presumably have evolved response to diverse selective processes, so we first examined whether the theory natural selection formed conceptual framework for published studies (N = 270) nest-site by birds. Most (61%) tested pattern arising from (whether used nest differed available nesting habitat), many (54%) evidence process unsuccessful nests successful nests), some (10%) caused subsequent adaptation, but remarkably few conceptually linked these elements or...
SummaryAdult honey bees are maintained in vitro laboratory cages for a variety of purposes. For example, researchers may wish to perform experiments on caged individually or groups study aspects parasitology, toxicology, physiology under highly controlled conditions, they cage whole frames obtain newly emerged workers known age cohorts. Regardless purpose, must manage number variables, ranging from selection subjects (e.g. bee subspecies) experimental environment temperature and relative...
Abstract Queen health is crucial to colony survival of social bees. Recently, queen failure has been proposed be a major driver managed honey bee losses, yet few data exist concerning effects environmental stressors on queens. Here we demonstrate for the first time that exposure field-realistic concentrations neonicotinoid pesticides during development can severely affect queens western bees ( Apis mellifera ). In pesticide-exposed queens, reproductive anatomy (ovaries) and physiology...
Immunosuppressive effects of testosterone lead to a rediction male-biased parasitism. To test this prediction, prevalences blood parasites were compared between male and female birds using statistically correct vote counts data from 33 studies. We found no overall difference in prevalence males females, either breeding or non-breeding birds. However, infections by Haemoproteus (the most common genus parasite found) significantly more among females than males, Restricting the analysis...
CCD, Colony Collapse Disorder. Although most of humanity relies upon foods that do not require animal pollination 1, production 39 the world's 57 important monoculture crops still benefits from this ecosystem service 2. Western honey bees (Apis mellifera) are undoubtedly single-most valuable pollinators to agriculture because they can be easily maintained and transported pollinator-dependent crops. Yet, despite an almost 50% increase in world bee stocks over last century, beekeepers have...
Abstract European honey bees Apis mellifera are important commercial pollinators that have suffered greater than normal overwintering losses since 2007 in North America and Europe. Contributing factors likely include a combination of parasites, pesticides, poor nutrition. We examined diet diversity, nutritional quality, pesticides bee‐collected pollen from colonies the Canadian Maritime Provinces spring summer 2011. sampled collected by at four site types: apple orchards, blueberry fields,...
SummaryIn this article we provide guidelines on statistical design and analysis of data for all kinds honey bee research. Guidelines selection different methods presented are, at least partly, based experience. This can be used: to identify the most suitable type collected; optimise one's experimental factors investigated, samples analysed, produced; determine how, where, when sample bees from colonies; or just inspire. Also included are presentation reporting data, as well where find help...
The shasta ground sloth Nothrotherium shastense inhabited Rampart Cave in the Grand Canyon of Colorado River, Arizona, for at least 25,000 years. During this interval occupation was probably discontinuous; radiocarbon dates dung from surface cave are on order 10,000 years, 18-in. level 12,000 and 54-in. older than 35,000 Dung samples collected 6-in. intervals to a depth 60 in. proved rich well-preserved pollen. Within each there is great variation pollen content. In part reflects seasonal...
Summary Contaminants can affect organisms' behaviour and, as a consequence, survival. Tau-fluvalinate (hereafter fluvalinate) is the active ingredient in pesticide commonly used North America to control Varroa destructor (Anderson and Trueman) mites honey bee (Apis mellifera Linnaeus) colonies. Fluvalinate's effects on bees are not well known. Honey cognitive neural function be assessed using proboscis extension reflex (PER) that applies Pavlovian conditioning techniques. This study PER...
Nosema spp. fungal gut parasites are among myriad possible explanations for contemporary increased mortality of western honey bees (Apis mellifera, hereafter bee) in many regions the world. Invasive ceranae is particularly worrisome because some evidence suggests it has greater virulence than its congener N. apis. appears to have recently switched hosts from Asian cerana) and now a nearly global distribution bees, apparently displacing We examined parasite reproduction effects apis, ceranae,...
Abstract Determining how migratory animals are spatially connected between breeding and non‐breeding periods is essential for predicting the effects of environmental change developing optimal conservation strategies. Yet, despite recent advances in tracking technology, we lack comprehensive information on spatial structure networks across a species’ range, particularly small‐bodied, long‐distance animals. We constructed network songbird used network‐based metrics to characterize prioritize...
Latitudinal differences in timing of breeding are well documented but how such carry over to influence events the annual cycle migratory birds is not understood. We examined geographical variation throughout year using light-level geolocator tracking data from 133 tree swallows ( Tachycineta bicolor) originating 12 North American populations. A swallow's latitude influenced breeding, which then carried affect ground departure. This resulted subsequent effects on arrival and departure...
Extant hypotheses predict that, in the face of sexual selection, avian song and plumage may evolve a concerted fashion, an antagonistic or ways unrelated to each other. To test these ideas regarding which traits selection targets, consequences for other traits, we analyzed patterns complexity dimorphism 56 species wood warblers (Parulinae). Overall, males more dimorphic sang shorter songs often, but did not have complex songs. However, when monomorphic were excluded from analysis, found that...
Life history theory predicts that parents will have lower Darwinian fitness if they tend clutches are above or below the size naturally produce. We experimentally tested for relationships between and clutch in Tree Swallow (Tachycineta bicolor) offspring parents. Over 130 trios of nests initiated on same day were randomly divided among reduce (−3 eggs), control (3 eggs picked up replaced), add (+3 eggs) manipulations. Pre-manipulation modal was six (range before manipulations 1–10;...
Shutler, D., D. J. T. Hussell, R. Norris, W. Winkler, Robertson, F. Bonier, B. Rendell, M. Bélisle, G. Clark, Dawson, N. Wheelwright, P. Lombardo, A. Thorpe, Truan, Walsh, L. Leonard, Horn, C. Vleck, Rose, Whittingham, O. Dunn, K. Hobson and Stanback. 2012. Spatiotemporal patterns in nest box occupancy by Tree Swallows across North America. Avian Conservation Ecology 7(1): 3.http://dx.doi.org/10.5751/ACE-00517-070103
Determining the distribution of stopover and overwintering areas migratory animals is essential for understanding population dynamics building predictive models. Tree Swallows (Tachycineta bicolor) are small songbirds that breed across North America. Data from Doppler weather radar eBird indicate Swallow numbers increase throughout October November in southeastern Louisiana, but then decrease during December. We thus hypothesized Louisiana a area used by fall migration before they move to...
Despite their importance in marine food webs, much has yet to be learned about the spatial ecology of small seabirds. This includes Leach's storm-petrel Oceanodroma leucorhoa, a species that is declining throughout its Northwest Atlantic breeding range. In 2013 and 2014, we used global location sensors track foraging movements incubating storm-petrels from 7 eastern Canadian colonies. We determined compared trip at-sea habitat characteristics, analysed overlap among colonies, whether colony...
Accumulating evidence suggests that Atlantic populations of Leach's Storm-Petrels (Oceanodroma leucorhoa) are experiencing significant declines. To better understand possible causes these declines, we used geolocators to document movements small (∼50-g) pelagic seabirds during migration and the non-breeding period. During 2012 2013, movement tracks were obtained from two birds traveled in a clock-wise direction breeding colonies eastern Canada (Bon Portage Island, Nova Scotia, Gull...
— 704 The Auk, Vol. 127, Number 3, pages 704−708. ISSN 0004-8038, electronic 1938-4254. 2010 by American Ornithologists’ Union. All rights reserved. Please direct all requests for permission to photocopy or reproduce article content through the University of California Press’s Rights and Permissions website, http://www.ucpressjournals. com/reprintInfo.asp. DOI: 10.1525/auk.2010.10033 Margaret Voss,1,4 DaVe shutler,2 anD Jacob Werner3
Knowledge of foraging movements during the breeding season is key to understanding energetic stresses faced by seabirds. Using archival light loggers (geolocators), a Bayesian state–space model, and stable isotope analysis, we compared Leach's storm‐petrels Oceanodroma leucorhoa their incubation periods in 2012 2013. Data were collected from two colonies, Bon Portage Island Country Island, which are 380 km apart along coast Nova Scotia, Canada. Based on allometry for procellariiform mass,...
In a study of almost 16 000 nest records from seven swallow species across the entire Western Hemisphere, clutch sizes decline with relative laying date in each population, but slope this grows steeper increasing distance equator. Late‐laying birds at all latitudes lay clutches similar sizes, suggesting that latitudinal differences may be driven primarily by earlier‐laying birds. Focused comparisons site‐years North America qualitatively different food availability indicate supply...