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- 419University of Alberta, Department of Biological Sciences
- 138Sawchuk, Matthew
- 81Mark A. Lewis
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Deconstructing the Gestalt: New concepts and tests of homology, as exemplified by a re-conceptualization of “microstomy” in squamates
Download2021-03-22
Strong, Catherine R. C., Scherz, Mark D., Caldwell, Michael W.
This is the accepted (i.e., postprint; post-peer review) version of the following article: Strong, C. R. C., Scherz, M. D. & Caldwell, M. W. 2021. Deconstructing the Gestalt: new concepts and tests of homology, as exemplified by a re-conceptualization of “microstomy” in squamates. The Anatomical...
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Deep mitochondrial DNA lineage divergences within Alberta populations of Dermacentor albipictus (Acari: Ixodidae) do not indicate distinct species
Download2010
Leo, S.S.T., Pybus, M.J., Sperling, F.A.H.
The winter tick Dermacentor albipictus (Packard) has a single-host life cycle that allows it to reach severe infestation levels on ungulates, particularly moose, Genotypic variation within these and related ticks has been a source of taxonomic confusion, although the continuity in their...
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2012
Farkas, R., Kaufman, R., Jachim, A., Chomel, B., Otranto, D., Guillot, J., Franc, M., Wall, R., Pfister, K., Jongejan, F., Pollmeier, M., Inokuma, H., Beugnet, F., Baneth, G., Sainz, A., Bowman, A. S., Halos, L.
Although widely used, the term repellency needs to be employed with care when applied to ticks and other periodic or permanent ectoparasites. Repellency has classically been used to describe the effects of a substance that causes a flying arthropod to make oriented movements away from its source....
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1985
Small, shallow seepage lakes in northern Wisconsin that have both low winter oxygen concentrations and low pH possess depauperate fish assemblages containing primarily or exclusively central mudminnows, Umbra limi, and yellow perch, Percaflavescens. Six times during three years I determined the...
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Density-Dependent Effects and the Regulation of Crucian Carp Populations in Single-Species Ponds
Download1994
Tonn, W. M., Holopainen, I. J., Paszkowski, C. A.
Crucian carp (Carassius carassius) is often the only fish species present in small ponds of northern Europe. Such populations are typically at high densities and consist primarily of small, relatively slender, and short-lived fish; populations in multispecies assemblages in lakes display opposite...
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Density-dependent variation in lifetime breeding success and natural and sexual selection in Soay rams
Download1999
Smith, J.A., Bancroft, D.R., Clutton-Brock, T.H., MacColl, A.D., Pilkington, J., Coltman, D.W., Pemberton, J.M.
Variation in male lifetime breeding success (LBS) is central to understanding selection, yet it has rarely been measured in natural populations of large mammals. Here, we first describe variation in the opportunity for selection in cohorts of Soay rams (Ovis aries) on the archipelago of St....
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Depauperate genetic variability detected in the American and European bison using genomic techniques
Download2009
Tokarska, M., Demontis, D., Wójcik, J.M., Gregersen, V.R., Loeschcke, V., Pertoldi, C., Coltman, D.
A total of 929 polymorphic SNPs in EB (out of 54, 000 SNPs screened using a BovineSNP50 Illumina Genotyping BeadChip), and 1, 524 and 1, 403 polymorphic SNPs in WB and PB, respectively, were analysed. EB, WB and PB have all undergone recent drastic reductions in population size. Accordingly, they...
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Description and distribution of Desmacella hyalina sp. nov. (Porifera, Desmacellidae), a new cryptic demosponge in glass sponge reefs from the western coast of Canada
Download2020-01-01
Law LK, Reiswig HM, Ott BS, McDaniel N, Guillas KC, Kahn AS, Dinn C, Leys SP
Glass sponges (Porifera, Hexactinellida) form globally unique reefs that support deep-sea biodiversity in the Canadian northeast Pacific. In February 2017, the largest known reefs were protected within the Hecate Strait and Queen Charlotte Sound Glass Sponge Reefs Marine Protected Area...
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2014-01-01
Schlägel, Ulrike E, Lewis, Mark A.
Animals of many species demonstrate movement behaviour in which decisions are based on a variety of information. Effects of resources have been studied widely, often under the assumption that the environment is constant over the course of the study. Much less understood is the role of dynamic...
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Detecting minimum energy states and multi-stability in nonlocal advection–diffusion models for interacting species
Download2022-06-13
Valeria Giunta, Thomas Hillen, Mark A. Lewis, Jonathan R. Potts
Deriving emergent patterns from models of biological processes is a core concern of mathematical biology. In the context of partial differential equations, these emergent patterns sometimes appear as local minimisers of a corresponding energy functional. Here we give methods for determining the...