Adaptation to global change in Alberta’s mountain environment
Using the Columbian ground squirrel as a model animal species, we are examining organismal responses to patterns of global change. Because of demonstrated gene flow over the mountain environment, from alpine to foothill habitats in Alberta, the ground squirrels have evolved extreme phenotypic plasticity in their lifecycles. Thus, they are at the extreme favorable limit of flexibility to short-term changes in the physical environment that are occurring under climatic aspects of global change. In addition, the ground squirrels respond through their lifecycles to two critical climatic changes that are especially important in Alberta: the onset of spring and the intensity of midsummer warming and drying. These climatic elements exhibit increased fluctuations over the years, and our long-term studies permit testing of both basic and practical questions of animal reactions to climatic fluctuations.
PI: Dr. F Stephen Dobson (Professor, Auburn University)
Duration: 26 years ongoing (1992-present)
Collaborators: P Neuhaus (Univ Calgary), DW Coltman (U Alberta), VA Viblanc (IPHC-CNRS), JE Lane (Univ Saskatoon), etc.......
Adaptation to global change in Alberta’s mountain environment
Using the Columbian ground squirrel as a model animal species, we are examining organismal responses to patterns of global change. Because of demonstrated gene flow over the mountain environment, from alpine to foothill habitats in Alberta, the ground squirrels have evolved extreme phenotypic plasticity in their lifecycles. Thus, they are at the extreme favorable limit of flexibility to short-term changes in the physical environment that are occurring under climatic aspects of global change. In addition, the ground squirrels respond through their lifecycles to two critical climatic changes that are especially important in Alberta: the onset of spring and the intensity of midsummer warming and drying. These climatic elements exhibit increased fluctuations over the years, and our long-term studies permit testing of both basic and practical questions of animal reactions to climatic fluctuations.
PI: Dr. F Stephen Dobson (Professor, Auburn University)
Duration: 26 years ongoing (1992-present)
Collaborators: P Neuhaus (Univ Calgary), DW Coltman (U Alberta), VA Viblanc (IPHC-CNRS), JE Lane (Univ Saskatoon), etc.......
News articles and book reviews
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The death and life of the world's biggest ram Calgary Herald
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Die Ungeselligkeit der Geschlechter Telepolis
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Sexual segregation in Vertebrates – Ecology of the two sexes ISBE Newsletter
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Sexual Segregation in Vertebrates. Ecology of the Two Sexes. Book Review. Animal Behaviour
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When opposites don’t attract. Book Review. Trends in Ecology and Evolution
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Stalkers right to shoot orphan deer. BBC Nature News
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Study warns over orphaning young deer. University of Edinburgh
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Applying social network theory to wildlife. University of Northern British Columbia
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Big Horn Sheep targeted by poachers in K-Country. CTV News Calgary
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Contrary to Orwell, Democracy Rules on the Big Animal Farm. New York Times
Books and chapters
13. Festa-Bianchet, M. 2017. Evolutionary impacts from harvesting. Elsevier Reference Module in Life Sciences: Ecology and Evolution, Ed. By B. D. Roitberg.
12. Festa-Bianchet, M. 2014. Natural survival of males in mountain ungulates. P. 5-11 In: CIC Caprinae Atlas of the world. Ed. By G.R. Damm and N. Franco. Rowland Ward Publications, Houghton, South Africa.
11. Ruckstuhl K. E. & P. Neuhaus (2011): Sexual segregation in vertebrates: ecology of the two sexes. Edited book – paperback edition. Cambridge University Press.
10. Hare, J.F., and J.O. Murie. 2007. Ecology, kinship and ground squirrel sociality: Insights from comparative analyses. Pp. 345-355 in Rodent Societies--An Ecological and Evolutionary Perspective (J.O. Wolff and P.W. Sherman, eds.) University of Chicago Press, 610 pp.
9. Gaillard, J.-M., T. Coulson, M. Festa-Bianchet and N. Owen-Smith. 2009. Demographic processes: lessons from long-term individual-based studies. P. 98-116 In: Dynamics of large herbivore populations in changing environments: shifting paradigms. Ed. by N. Owen-Smith. Princeton University Press, Princeton.
8. Gaillard, J.-M., T. Coulson, and M. Festa-Bianchet. 2008. Recruitment. P. 2982-2986 In: Population Dynamics, Vol. 4 of Encyclopedia of Ecology. Ed. by S.E. Jorgensen and B.D. Fath. Elsevier, Oxford.
7. Festa-Bianchet, M. 2007. Ecology, evolution, economics and ungulate management. P. 183-202 In: Wildlife Science: Linking Ecological Theory and Management Applications. Ed. By T. Fullbright and D. Hewitt. CRC Press, Boca Raton, Florida
6. Ruckstuhl K. E. & P. Neuhaus (2006): Sexual segregation in vertebrates: ecology of the two sexes. Edited book. Cambridge University Press.
5. Neuhaus, P., K. E. Ruckstuhl, & L. Conradt (2006): Sexual segregation in vertebrates: conclusions and future directions for research. In Sexual segregation in vertebrates: ecology of the two sexes. Edited book. Cambridge University Press.
4. Ruckstuhl K. E. & P. Neuhaus (2006): Activity asynchrony and social segregation. In Sexual segregation in vertebrates: ecology of the two sexes. Edited book. Cambridge University Press.
3. Festa-Bianchet, M. 2003. Exploitative wildlife management as a selective pressure for the life-history evolution of large mammals. P. 191-207 In: Animal Behavior and Wildlife Conservation. Ed. By M. Festa-Bianchet and M. Apollonio. Island Press, Washington.
2. Festa-Bianchet, M. 2000. Bighorn sheep/Ovis canadensis. P. 348-350 in: The Smithsonian Book of North American Mammals. Ed. by D.E. Wilson and S. Ruff. Smithsonian Institution Press, Washington, D.C.
1. Murie, J.O. and Michener, G.R. (eds.). 1984. Biology of ground-dwelling squirrels: annual cycles, behavioral ecology and sociality. Univ. Nebraska Press, Lincoln, 459 pp.
Scientific publications
2018
183. Viblanc, V.A., Q. Schull, J.D. Roth, J. Rabdeau, C. Saraux, P Uhlrich, F. Criscuolo, and F.S. Dobson. 2018. Maternal oxidative stress and reproduction: testing the constraint, cost and shielding hypotheses in a wild mammal. Functional Ecology 32:722-735.
182. Maggie Grover, Nigel Caulkett, Kathreen Ruckstuhl, Soren Boysen, and Åsa Fahlman. 2018. Comparison of The Efficacy and Safety of Medetomidine-Ketamine Versus Medetomidine-Azaperone-Alfaxalone Combination in Free-Ranging Rocky Mountain Bighorn Sheep (Ovis canadensis). Journal of Zoo and Wildlife Medicine 49(4): 000–000
181. Maria A. Santa, Sonya A. Pastran, Claudia Klein, Padraig Duignan, Kathreen Ruckstuhl,Thomas Romig, Alessandro Massolo. 2018. Detecting co-infections of Echinococcus multilocularis and Echinococcus canadensis in coyotes and red foxes in Alberta, Canada using real-time PCR IJP: Parasites and Wildlife 7: 111–115.
180. O. Alejadro Aleuy, Kathreen Ruckstuhl, Eric P. Hoberg, Alasdair Veitch, Norman Simmons, Susan J. Kutz. 2018. Diversity of gastrointestinal helminths in Dall's sheep and the negative association of the abomasal nematode, Marshallagia marshalli, with fitness indicators. PONE-D-17-27686R2
179. Petra McDougall and Kathreen E. Ruckstuhl. 2018. Vigilance behaviour is more contagious when chewing stops: examining the characteristics of contagious vigilance in bighorn sheep. Behavioural Ecology and Sociobiology, in press.
178. Petra McDougall and Kathreen E. Ruckstuhl. 2018. Doing what your neighbor does: neighbor proximity, familiarity, and postural similarity increases behavioral contagion. Animal Behaviour, 135: 177-185.
2017
177. Chimoné S. Dalton, Karen van de Rakt, Åsa Fahlman, Kathreen Ruckstuhl, Peter Neuhaus, Richard Popko, Susan Kutz, Frank van der Meer. 2017. Discovery of herpesviruses in Canadian wildlife. Archives of Virology 162: 449-456
176. Schindler, S., M. Festa-Bianchet, J. T. Hogg and F. Pelletier. 2017. Hunting, age structure and horn size distribution in bighorn sheep. Journal of Wildlife Management, 81: 792-799.
175. Festa-Bianchet, M., M. Douhard, J.M. Gaillard and F. Pelletier. 2017. Successes and challenges of long-term field studies of marked ungulates. Journal of Mammalogy, 98: 612-620.
174. Festa-Bianchet, M. 2017. When does selective hunting select, how can we tell and what should we do about it? Mammal Review, 47: 76-81.
2016
173. Chimoné Stefni Dalton, Ph.D.; Karen van de Rakt; Åsa Fahlman; Kathreen Ruckstuhl; Peter Neuhaus; Richard Popko; Susan Kutz; Frank van der Meer. 2016. Discovery of herpes viruses in Canadian wildlife. Archives of Virology.
172. Dobson, F.S., J.E. Lane, M. Low, and J.O. Murie. 2016. Fitness implications of seasonal climate variation in Columbian ground squirrels. Ecology and Evolution 6:5614-5622.
171. Rubach, K., M. Wu, A. Abebe, F.S. Dobson, J.O. Murie, and V.A. Viblanc. 2016. Testing the reproductive and somatic trade-off in female Columbian ground squirrels. Ecology and Evolution 6:7586-7595.
170. Viblanc, V.A., C. Pasquaretta, C. Sueur, R. Boonstra, and F.S. Dobson. 2016. Aggressino in Columbian ground squirrels: relationships with age, kinship, energy allocation, and fitness. Behavioral Ecology 27:1716-1725.
169. Viblanc, V.A., C. Saraux, J.O. Murie, and F.S. Dobson. 2016. Kin effects on energy allocation in group-living ground squirrels. Journal of Animal Ecology 85:1361-1369.
2015
168. Mills, J.A., C. Teplitsky, 17 others, M. Festa-Bianchet and 42 others. 2015. Archiving primary data: solutions for long-term studies. Trends in Ecology and Evolution, 30: 581-589.
167. Schindler S, Gaillard J-M, Gruning A, Neuhaus P, Trail LW, Tuljapurkar S, Coulson T. 2015. Sex-specific demography an 10.1038/nature14968 d generalization of the Trivers-Willard theory. Nature, 526, 7572, 249-252.
166. Raveh, S., P. Neuhaus, and F.S. Dobson. 2015. Ectoparasites and fitness of female Columbian ground squirrels. Philosophical Transactions of the Royal Society of London 370:20140113.
165. Willisch CS., Biebach I., Marreros N., Ryser-Degiorgis M-P., Neuhaus P. 2015. Horn Growth and Reproduction in a Long-Lived Male Mammal: No Compensation for Poor Early-Live Horn Growth. Evolutionary Biology 42 (1): 1-11.
164. Jesse E. H. Patterson, Peter Neuhaus, Susan J. Kutz, and Kathreen E. Ruckstuhl. 2015. Patterns of ectoparasitism in North American red squirrels (Tamiasciurus hudsonicus): sex-biases, seasonality, age, and effects on male body condition. International Journal for Parasitology: Parasites and Wildlife (IJPPAW)4: 301-306
163. Stefano Liccioli, Sean Rogers, Claudia Greco, Susan J. Kutz, Florence Chan, Kathreen E. Ruckstuhl and Alessandro Massolo. 2015. Assessing individual patterns of Echinococcus multilocularis infection in urban coyotes: non-invasive genetic sampling as epidemiological tool. Journal of Applied Ecology. 52 (2): 434-442. Doi: 10.1111/1365-2664.12401
162. Stefano Liccioli, Carly Bialowas, Kathreen E. Ruckstuhl, Alessandro Massolo. 2015. Feeding ecology informs parasite epidemiology: prey selection modulates encounter rate with Echinococcus multilocularis in urban coyotes. PLOS ONE | DOI:10.1371/ journal. pone.0121646.
2014
161. Stefano Liccioli, Susan J. Kutz, Kathreen E. Ruckstuhl and Alessandro Massolo. 2014. Spatial heterogeneity and temporal variations in Echinococcus multilocularis infections in wild hosts in a North American urban setting. International Journal for Parasitology 44 (7): 457-465
160. Vander Wal, E., D. Garant, S. Calmé, C.A. Chapman, M. Festa-Bianchet, V. Millien, S. Rioux-Paquette and F. Pelletier. 2014. Applying evolutionary concepts to wildlife disease ecology and management. Evolutionary Applications, 7: 856-868.
159. Festa-Bianchet, M., F. Pelletier, J.T. Jorgenson, C. Feder and A. Hubbs. 2014. Decrease in horn size and increase in age of trophy sheep in Alberta over 37 years. Journal of Wildlife Management, 78: 133-141.
2013
158. Engen, S., B.-E. Sæther, K.B. Armitage, D.T. Blumstein, T.H. Clutton-Brock, F.S. Dobson, M. Festa-Bianchet, M.K. Oli, and A. Ozgul. 2013. Estimating the effect of temporarily autocorrelated environments on the demography of density-independent age-structured populations. Methods in Ecology and Evolution 4:573-584.
157. Sæther, B.-E., T. Coulson, V. Grøtan, S. Engen, R. Altwegg, K.B. Armitage, C. Barbraud, P.H. Becker, D.T. Blumstein, F.S. Dobson, M. Festa-Bianchet, J.-M. Gaillard, A. Jenkins, C. Jones, M.A.C. Nicoll, K. Norris, M.K. Oli, A. Ozgul, and H. Weimerskirch. 2013. Life history and critical ages for population change in birds and mammals. American Naturalist 182:743-759.
156. Schindler S., Neuhaus P., Gaillard J-M., Coulson T. (2013): The influence of non-random mating on population growth. The American Naturalist 182 (1): 28-41.
155. Willisch CS., Marreros N., Neuhaus P. (2013): Long-distance photogrammetric trait estimation in free-ranging animals: A new approach. Mammalian Biology 78(5): 351-355.
2012
154. Arnaud, C.M., F.S. Dobson, and J.O. Murie. 2012. Philopatry and within colony movements in Columbian ground squirrels. Molecular Ecology 21:493-504.
153. Festa-Bianchet, M. 2012. The cost of trying: weak interspecific correlations among life-history components in male ungulates. Canadian Journal of Zoology, 90: 1072-1085.
152. Dobson, F.S., V.A. Viblanc, C.M. Arnaud, and J.O. Murie. 2012. Kin selection in Columbian ground squirrels: direct and indirect fitness benefits. Molecular Ecology 21:524-531.
151. Jones, P.H., J. Van Zant, and F.S. Dobson. 2012. Variation in reproductive success of male and female Columbian ground squirrels (Urocitellus columbianus. Canadian Journal of Zoology 90:736-743.
150. Lane, J.E., L.E.B. Kruuk, A. Charmantier, J.O. Murie, and F.S. Dobson. 2012. Delayed phenology and reduced fitness associated with climate change in a wild mammal. Nature 489:554-557.
149. Liccioli, S. Catalano, S. J. Kutz, M. Lejeune, G. G. Verocai, P. J. Duignan, C. Fuentealba, M. Hart, K. E. Ruckstuhl and A. Massolo. 2012. Gastrointestinal parasites of coyotes (Canis latrans) in the metropolitan area of Calgary, Canada. Canadian Journal of Zoology 90 (8): 1023-1030(8).
148. Koren L, Whiteside D, Fahlman S, Ruckstuhl K, Kutz S, Checkley S, Dumond M, Wynne-Edwards K. 2012. Cortisol and corticosterone in stressed, cortisol-dominant wildlife. General and Comparative Endocrinology 177(1): 113-119.
147. Bryanne M. Hoar, Kathreen Ruckstuhl, and Susan Kutz. 2012. Development and availability of the free-living stages of Ostertagia gruehneri, an abomasal parasite of barrenground caribou (Rangifer tarandus groenlandicus), on the Canadian tundra. Parasitology, 139: 1093-1100.
146. Liccioli, S., Catalano, S., Kutz, S.J., Lejeune, M, Verocai, G.G., Duignan, P.J., Fuentealba, C., Ruckstuhl, K. E. & Massolo, A. (2012): Sensitivity of double centrifugation sugar fecal flotation for detecting gastrointestinal helminths in coyotes (Canis latrans). Journal of Wildlife Diseases, 48 (3), 2012, pp. 717–723.
145. Forde, Taya; Kutz, Susan; De Buck, Jeroen; Warren, Amy; Ruckstuhl, Kathreen; Pybus, Margo; Orsel, Karin (2012): Mycobacterium avium subspecies paratuberculosis in Rocky Mountain bighorn sheep. Journal of Wildlife Diseases, 48 (1), 2012, pp. 1–11.
144. Åsa Fahlman, Nigel Caulkett, Jon M. Arnemo, Peter Neuhaus, Kathreen E. Ruckstuhl (2012): Efficacy of a portable oxygen concentrator with pulsed delivery for treatment of hypoxemia during anesthesia of wildlife. Journal of Zoo and Wildlife Medicine. 43 (1): 67-76.
143. Willisch CS., Biebach I., Koller U., Bucher T., Marreros N., Ryser-Degiorgis M-P., Keller LF., Neuhaus P. 2012. Male reproductive success in a polygynous ungulate with a slow life history: the importance of age, social status and alternative mating tactics. Evolutionary Ecology 26: 187-206
142. Gorrell JC, Boutin S, Raveh S, Neuhaus P, Côté SD, Coltman DW. 2012. Sexing the Sciuridae: a simple and accurate set of molecular methods to determine sex in tree squirrels, ground squirrels and marmots. Mol Ecol Resour 12:806-809.
141. C. Bueno, K. E. Ruckstuhl, N. Arrigo, A. N. Aivaz & P. Neuhaus. 2012. Impacts of cattle grazing on small rodent communities: An experimental case study. Canadian Journal of Zoology 90: 23-31
2011
140. Lane, J.E., L.E.B. Kruuk, A. Charmantier, J.O. Murie, D.W. Coltman, S. Raveh, and F.S. Dobson. 2011. Heritability of hibernation emergence date in a wild population of Columbian ground squirrels. Journal of Evolutionary Biology 24:1949-1959.
139. Bourbeau-Lemieux, A., M. Festa-Bianchet, J.-M. Gaillard, and F. Pelletier. 2011. Predator-induced Allee effects in a wild ungulate. Ecology Letters, 14: 358-363.
138. Nesterova, A.P. S. Raveh, T.G. Manno, D.W. Coltman, and F.S. Dobson. 2011. Pre-mating behavioral tactics of Columbian ground squirrels. Journal of Mammalogy 92:861-870.
137. Raveh, S., D. Heg, F.S. Dobson, D.W. Coltman, J.C. Gorrell, A. Balmer, and P. Neuhaus. 2011. No experimental effects of parasite load on male mating behaviour and reproductive success. Animal Behaviour 82:673-682.
136. Raveh, S., D. Heg, V. Viblanc, D.W. Coltman, J.C. Gorrell, F.S. Dobson, A. Balmer, and P. Neuhaus. 2011. Male reproductive tactics to increase paternity in the polygynandrous Columbian ground squirrel (Urocitellus columbianus). Behavioural Ecology & Sociobiology 65:695-706.
135. Raynaud, J. and S.F. Dobson. 2011. Scent communication by female Columbian ground squirrels, Urocitellus columbianus. Behavioural Ecology & Sociobiology 65:351-358.
134. Bueno, C., Ruckstuhl, K. E., Arrigo, N., Aivaz, A.N., and Neuhaus, P. 2011. Impacts of cattle grazing on small-rodent communities: An experimental case study. Canadian Journal of Zoology 90: 23–31; doi:10.1139/Z11-108.
133. Aivaz, A.N. and Ruckstuhl, K. E. 2011. Costs of behavioural synchrony as a potential driver behind size-assorted grouping. Behavioural Ecology. 22(6): 1353-1363. DOI: 10.1093/beheco/arr141.
2010
132. Fairbanks, B.M., and F.S. Dobson. 2010. Kinship does not affect vigilance in Columbian ground squirrels (Urocitellus columbianus). Canadian Journal of Zoology 88:266-270.
131. Raveh, S., D. Heg, F.S. Dobson, D.W. Coltman, J.C. Gorrell, A. Balmer, and P. Neuhaus. 2010. Mating order and reproductive success in male Columbian ground squirrels (Urocitellus columbianus). Behavioral Ecology 21:537-547.
130. Viblanc, V.A., C.M. Arnaud, F.S. Dobson, and J.O. Murie. 2010. Kin selection in Columbian ground-squirrels (Urocitellus columbianus): littermate kin provide individual fitness benefits. Proceedings of the Royal Society of London 277:989-994.
129. Moquin P, Curry, B., Pelletier, F, and Ruckstuhl K. E. 2010. Plasticity in the rumination behaviour of bighorn sheep: contrasting strategies between the sexes? Animal Behaviour 79:1047–1053.
128. Brown, N. A., Ruckstuhl, K. E., Donelon. S. and Corbett, C. 2010. Changes in vigilance, grazing behaviour and spatial distribution of bighorn sheep due to cattle presence in Sheep River Provincial Park, Alberta. Agriculture, Ecosystems and Environment, 135: 226-231.
2009
127. Meldrum G.E. and Ruckstuhl K. E. 2009. Mixed-sex group formation by bighorn sheep in winter: trading costs of synchrony for benefits of group living”. Animal Behaviour: 77: 919–929. 10.1016/j.anbehav.2008.12.023.
126. Engen, S., R. Lande, B.-E. Sæther, and F.S. Dobson. 2009. Reproductive value and the stochastic demography of age-structured populations. American Naturalist 174:795-804.
125. Skibiel, A.L., F.S. Dobson, and J.O. Murie. 2009. Maternal influences on reproduction in two populations of Columbian ground squirrels. Ecological Monographs 79:325-341.
124. Hamel, S., M. Garel, M. Festa-Bianchet, J.-M. Gaillard and S.D. Côté. 2009. Spring Normalized Difference Vegetation Index (NDVI) predicts annual variation in timing of peak faecal crude protein in mountain ungulates. Journal of Applied Ecology, 46: 582-589.
123. Bonenfant, C., J.-M. Gaillard, T. Coulson, M. Festa-Bianchet, A. Loison, M. Garel, L.E. Loe, P. Blanchard, N. Pettorelli, N. Owen-Smith, J. DuToit and P. Duncan. 2009. Empirical evidence of density-dependence in populations of large herbivores. Advances in Ecological Research, 41: 299-338.
2008
122. Ruckstuhl, K. E., Johnson E. A, & Myianishi, K. 2008. Introduction. The boreal forest and global change. Philosophical Transactions of the Royal Society B. 363 (1501): 2245-2249. DOI 10.1098/rstb.2007.2196.
121. Broussard, D.R., F.S. Dobson, and J.O. Murie. 2008. Previous experience and reproductive investment of female Columbian ground squirrels. Journal of Mammalogy 89:145-152.
120. Jones, O.R., J.-M. Gaillard, S. Tuljapurkar, J.S. Alho, K.B. Armitage, P.H. Becker, P. Bize, J. Brommer, A. Charmantier, M. Charpentier, T. Clutton-Brock, F.S. Dobson, M. Festa-Bianchet, L. Gustafsson, H. Jensen, C.G. Jones, B.-G. Lillandt, R. McCleery, J. Merilä, P. Neuhaus, M.A.C. Nicoll, K. Norris, M.K. Oli, J. Pemberton, H. Pietiäinen, T.H. Ringsby, A. Roulin, B.-E. Saether, J.M. Setchell, B.C. Sheldon, P.M. Thompson, H., Weimerskirch, E.J. Wickings, T. Coulson. 2008. Senescence rates are determined by ranking on the fast-slow life-history continuum. Ecology Letters 11:664-673.
119. Manno, T.G., and F.S. Dobson. 2008. Why are male Columbian ground squirrels territorial? Ethology 114:1049-1060.
118. Manno, T.G., A.P. Nesterova, L.M. DeBarbieri, and F.S. Dobson. 2008. Why do female Columbian ground squirrels (Spermophilus columbianus) give an estrus call? Canadian Journal of Zoology 86:900-909.
2007
117. Ruckstuhl, K. E. 2007. "Sexual segregation in vertebrates: proximate and ultimate causes". Integrative and Comparative Biology 47 (2): 245-257. DOI: 10.1093/icb/icm030.
116. Dobson, F.S., and M.K. Oli. 2007. Fast and slow life histories of mammals. Écoscience 14:292-299.
115. Dobson, F.S., and M.K. Oli. 2007. Fast and slow life histories of rodents. Pages 99-105 in: Rodent Societies (J.O. Wolff and P.W. Sherman, eds.). University of Chicago Press.
114. Fairbanks, B.M., and F.S. Dobson. 2007. Mechanisms of the group-size effect on vigilance in Columbian ground squirrels: dilution vs. detection. Animal Behaviour 73:115-123.
113. Manno, T.G., F.S. Dobson, J.L. Hoogland, and D.W. Foltz. 2007. Why do black-tailed prairie dog coteries fission? Journal of Mammalogy 88:448-456.
112. Manno, T.G., A.N. Nesterova, L.M. DeBarbieri, K.S. Wright, S.E. Kennedy, and F.S. Dobson. 2007. Why do male Columbian ground squirrels give a mating call? Animal Behaviour 74:1319-1327.
111. Festa-Bianchet, M. and W.J. King. 2007. Age-related reproductive effort in bighorn sheep ewes. Écoscience, 14: 318-322.
110. Pettorelli, N., F. Pelletier, A. von Hardenberg, M. Festa-Bianchet and S.D. Côté. 2007. Early onset of vegetation growth versus rapid green-up: impacts on juvenile mountain ungulates. Ecology, 88: 381-390.
2006
109. Chaikina, N. and Ruckstuhl K. E. (2006). Effects of cattle grazing on native ungulates: the good, the bad and the ugly. Rangelands, 28 (3): 8-14.
108. Neuhaus P (2006). Causes and consequences of sex-biased dispersal in Columbian ground squirrels (Spermophilus columbianus). Behaviour 143: 1013-1031
107. Pelletier, F., J.T. Hogg and M. Festa-Bianchet. 2006. Male reproductive effort in a polygynous ungulate. Behavioral Ecology and Sociobiology, 60: 645-654.
106. Pelletier, F. and M. Festa-Bianchet. 2006. Sexual selection and social rank in bighorn rams. Animal Behaviour, 71: 649-655.
2005
105. Broussard, D.R., F.S. Dobson, and J.O. Murie. 2005. The effects of capital on an income breeder: evidence from female Columbian ground squirrels. Canadian Journal of Zoology 83:546-552.
104. Oli, M.K., and F.S. Dobson. 2005. Generation time, elasticity patterns, and mammalian life histories. American Naturalist 166:124-128.
103. Pelletier, F., K.A. Page, T. Ostiguy and M. Festa-Bianchet. 2005. Fecal count of lungworm larvae and reproductive effort in bighorn sheep (Ovis canadensis). Oikos, 110: 473-480.
102. Coulson, T., J.-M. Gaillard and M. Festa-Bianchet. 2005. Decomposing the variation in ungulate population growth into contributions from multiple vital rates. Journal of Animal Ecology, 74: 789-801.
2004
101. Neuhaus, P., D.R. Broussard, J.O. Murie, and F.S. Dobson. 2004. Age of primaparity and implications of early reproduction on life history in female Columbian ground squirrels. Journal of Animal Ecology 73:36-43.
100. Neuhaus, P. & Ruckstuhl, K. E. 2004. Can the activity budget hypothesis explain sexual segregation in desert bighorn sheep? Behaviour, 141 (5): 513-520.
99. Neuhaus, P. & Ruckstuhl, K. E. 2004. Reply to Mooring & Rominger Behaviour, 141 (5): 531-532.
98. Gaillard, J.-M., A. Viallefont, A. Loison and M. Festa-Bianchet. 2004. Assessing senescence patterns in populations of large mammals. Animal Biodiversity and Conservation 27: 47-58.
97. Pelletier, F., and M. Festa-Bianchet. 2004. Effects of body mass, age, dominance and parasite load on foraging time of bighorn rams, Ovis canadensis. Behavioral Ecology and Sociobiology, 56: 546-551.
96. Pelletier, F., J.T. Hogg and M. Festa-Bianchet. 2004. Effect of chemical immobilization on social status of bighorn rams. Animal Behaviour, 67: 1163-1165.
2003
95. Broussard, D.R., T.S. Risch, F.S. Dobson, and J.O. Murie. 2003. Senescence and age-related reproduction of female Columbian ground squirrels. Journal of Animal Ecology 72:212-219.
94. Oli, M.K., and F.S. Dobson. 2003. The relative importance of life-history variables to population growth rate in mammals: Cole’s prediction revisited. American Naturalist 161:422-440.
93. Ruckstuhl, K. E., Festa-Bianchet, M. & Jorgenson, J. T. 2003. Bite rates in bighorn sheep: effects of age, sex and reproductive status Behavavioral Ecology & Sociobiology 54 (2): 167-173.
92. Neuhaus P (2003). Parasite removal and its impact on litter size and body condition in Columbian ground squirrels (Spermophilus columbianus). Proceedings of the Royal Society London, B (Suppl.) 270: S213-S215
91. Pelletier, F., J. Baumann and M. Festa-Bianchet. 2003. Fecal testosterone in bighorn sheep (Ovis canadensis): behavioural and endocrine correlates. Canadian Journal of Zoology, 81: 1678-1684.
90. Ruckstuhl, K.E., M. Festa-Bianchet, and J.T. Jorgenson. 2003. Bite rates in Rocky Mountain bighorn sheep (Ovis canadensis): effects of season, age, sex and reproductive status. Behavioral Ecology and Sociobiology, 54: 167-173.
89. Gaillard, J.-M, A. Loison, M. Festa-Bianchet, N. G. Yoccoz, and E. Solberg. 2003. Ecological correlates of life span in populations of large herbivorous mammals. Population and Development Review 29 (Suppl.): 39-56.
2002
88. Ruckstuhl, K. E. & Kokko, H. 2002. Modelling sexual segregation in ungulates: effects of group size, activity budgets and synchrony Animal Behaviour 64 (6): 909-914.
87. Ruckstuhl, K. E. & Neuhaus, P. 2002. Sexual segregation in ungulates: a comparative test of three hypotheses. Biological Reviews 77 (1): 77-96. Made the journal cover.
2001
86. Dobson, F.S., and M.K. Oli. 2001. The demographic basis of population regulation in Columbian ground squirrels. American Naturalist 158:236-247.
85. Neuhaus P. & N. Pelletier 2001. Mortality in relation to season, age, sex, and reproduction in Columbian ground squirrels (Spermophilus columbianus). Canadian Journal of Zoology 79: 465-470
84. Ruckstuhl, K., and M. Festa-Bianchet. 2001. Group choice by subadult bighorn rams: trade-offs between foraging efficiency and predator avoidance. Ethology, 107: 161-172.
2000
83. Neuhaus P. 2000. Weight comparisons and litter size manipulation in Columbian ground squirrel (Spermophilus columbianus) show evidence of costs of reproduction. Behavioral Ecology and Sociobiology 48: 75-83.
82. Neuhaus P. 2000. Timing of hibernation and molt in female Columbian ground squirrels. Journal of Mammalogy 81: 571-577
81. Gaillard, J.-M., M. Festa-Bianchet, N.G. Yoccoz, A. Loison and C. Toïgo. 2000. Temporal variation in fitness components and population dynamics of large herbivores. Annual Review of Ecology and Systematics, 31: 367-393.
1999
80. Dobson, F.S., T.S. Risch, and J.O. Murie. 1999. Increasing returns in the life history of Columbian ground squirrels. Journal of Animal Ecology 68:73-86.
79. Neuhaus P., R. Bennett, A. Hubbs. 1999. Effects of a late snowstorm and rain on survival and reproductive success in Columbian ground squirrels (Spermophilus columbianus). Canadian Journal of Zoology 77: 879-884
78. Loison, A., M. Festa-Bianchet, J.-M. Gaillard, J.T. Jorgenson, and J.-M. Jullien. 1999. Age-specific survival in five populations of ungulates: evidence of senescence. Ecology, 80: 2539-2554.
77. Bennett, R.P. 1999. Effects of food quality on growth and survival of juvenile Columbian ground squirrels (Spermophilus columbianus). Canadian Journal of Zoology 77: 1555-1561.
1998
76. Neuhaus P. & B Mainini. 1998. Reactions and adjustment of adult and young Alpine marmots Marmota marmota to intense hiking activities; Wildlife Biology 4: 119-123
75. Murie, J.O., S.D. Stevens, and B. Leoppky. 1998. Survival of captive-born cross-fostered juvenile Columbian ground squirrels in the field. Journal of Mammalogy 79:1152-1160.
74. Ruckstuhl, K.E., and Festa-Bianchet, M. 1998. Do reproductive status and lamb gender affect the foraging behavior of bighorn ewes? Ethology, 104: 941-954.
73. Festa-Bianchet, M., J.-M. Gaillard, and J.T. Jorgenson. 1998. Mass- and density-dependent reproductive success and reproductive costs in a capital breeder. American Naturalist, 152: 367-379.
72. Gaillard, J.-M., M. Festa-Bianchet, and N.G. Yoccoz. 1998. Population dynamics of large herbivores: variable recruitment with constant adult survival. Trends in Ecology and Evolution, 13: 58-63.
71. Steven, S.D. 1998. High incidence of infanticide by lactating females in a population of Columbian ground squirrels Spermophilus columbianus. Canadian Journal of Zoology 76: 1183-1187.
1997
70. Festa-Bianchet, M., J.T. Jorgenson, C. Bérubé, C. Portier, and W.D. Wishart. 1997. Body mass and survival of bighorn sheep. Canadian Journal of Zoology, 75: 1372-1379.
69. Ross, I., M. Jalkotzy, and M. Festa-Bianchet. 1997. Cougar predation on bighorn sheep in southwestern Alberta during winter. Canadian Journal of Zoology, 75: 771-775.
68. Jorgenson, J.T., M. Festa-Bianchet, J.-M. Gaillard, and W. D. Wishart. 1997. Effects of age, sex, disease and density on survival of bighorn sheep. Ecology, 78: 1019-1032.
67. Stevens, S., J. Coffin and C. Strobeck. 1997. Microsatellite loci in Columbian ground squirrels Spermophilus columbianus. Molecular Ecology 6: 493-495.
1996
66. Hare, J.F. and J.O. Murie. 1996. Ground squirrel sociality and the quest for the ''holy grail'': does kinship influence behavioral discrimination by juvenile Columbian ground squirrels. Behavioral Ecology 7:76-81.
65. Bérubé, C., M. Festa-Bianchet, and J.T. Jorgenson. 1996. Reproductive costs of sons and daughters in Rocky Mountain bighorn sheep. Behavioral Ecology, 7: 60-68.
64. Festa-Bianchet, M. 1996. Offspring sex ratio studies of mammals: does publication depend upon the quality of the research or the direction of the results? Écoscience, 3: 42-44.
1995
63. Dobson, F.S. 1995. Regulation of population size: evidence from Columbian ground squirrels. Oecologia 102:44-51.
62. Murie, J.O. 1995. Mating behavior of Columbian ground squirrels. 1. Multiple mating by females and multiple paternity. Canadian Journal of Zoology 73:1819-1826.
61. Risch, T.S., F.S. Dobson, and J.O. Murie. 1995. Offspring productivity from litters of Columbian ground squirrels: is the mean litter size the most productive? Ecology 76:1643-1654.
1994
60. Dobson, F.S. 1994. Measures of gene flow in the Columbian ground squirrel. Oecologia 100:190-195.
59. Hare, J.F. 1994. Group member discrimination by Columbian ground squirrels via familiarity with substrate-borne chemical cues. Animal Behaviour 47:803-813.
1993
58. Neuhaus P., B.Mainini, P.Ingold. 1993. Human impact on marmot behaviour; 1.Int. Symp. on Alpine Marmot. 165-169.
57. Ingold P., B.Huber, P.Neuhaus, B.Mainini, H.Marbacher, R.Schnidrig-Petrig, R.Zeller. 1993. Tourism and sport in the Alps – a serious problem for wildlife. Revue Suisse de Zoology. 100: 529-545.
56. Mainini B., P.Neuhaus, P.Ingold. 1993. Behaviour of marmots Marmota marmota under the influence of different hiking activities; Biological Conservation 64: 161-164.
1992
55. Dobson, F.S. 1992. Body mass, structural size, and life history patterns of the Columbian ground squirrel. American Naturalist 140:109-125.
54. Dobson, F.S., M.J. Badry, and C. Geddes. 1992. Seasonal activity in the Columbian ground squirrel. Canadian Journal of Zoology 70:1364-1368.
53. Hare, J.F., and Murie, J.O. 1992. Manipulation of litter size reveals no cost of reproduction in Columbian ground squirrels. Journal of Mammalogy 73:449-454.
52. Hare, J.F. 1992. Colony member discrimination by juvenile Columbian ground squirrels (Spermophilus columbianus). Ethology 92:301-315.
51. MacWhirter, R.B. 1992. Vocal and escape responses of Columbian ground squirrels to simulated terrestrial and aerial predator attacks. Ethology 91:311-325.
1991
50. Festa-Bianchet, M. 1991. The social system of bighorn sheep: grouping patterns, kinship and female dominance rank. Animal Behaviour, 42: 71-82.
49. Festa-Bianchet, M. 1991. Numbers of lungworm larvae in feces of bighorn sheep: yearly changes, influences of host sex, and effects on host survival. Canadian Journal of Zoology, 69: 547-554.
48. Festa-Bianchet, M., and W.J. King. 1991. Effects of litter size and population dynamics on juvenile and maternal survival in Columbian ground squirrels. Journal of Animal Ecology, 60: 1077-1090.
48. King, W.J., M. Festa-Bianchet, and S.E. Hatfield. 1991. Determinants of reproductive success in female Columbian ground squirrels. Oecologia, 86: 528-534.
47. Hare, J.F. 1991. Intraspecific killing of preweaned young in the Columbian ground squirrel, Spermophilus columbianus. Canadian Journal of Zoology 69:797-800.
46. King, W.J., M. Festa-Bianchet and S.E. Hatfield. 1991. Determinants of reproductive success in female Columbian ground squirrels. Oecologia 86:528-534.
45. MacWhirter, R.B. 1991. Effects of reproduction on activity and foraging behaviour of adult Columbian ground squirrels. Canadian Journal of Zoology 69:2209-2216.
1990
44. Dobson, F.S. 1990. Environmental influences on infanticide in Columbian ground squirrels. Ethology 84:3-14.
43. Festa-Bianchet, M. and V. Geist. 1990. Forage characteristics and bighorn sheep phenotype. Journal of Mammalogy, 71: 697-699.
42. Jorgenson, J.T., J. Samson, and M. Festa-Bianchet. 1990. Immobilization of bighorn sheep with xylazine hydrochloride and reversal with idazoxan. Journal of Wildlife Diseases, 26: 522-527.
41. Young, P.J. 1990. Structure, location and availability of hibernacula of Columbian ground squirrels (Spermophilus columbianus). American Midland Naturalist 123:357-364.
40. Young, P.J. 1990. Hibernating patterns of free-ranging Columbian ground squirrels. Oecologia 83:504-511.
1989
39. Festa-Bianchet, M. 1989. Individual differences, parasites, and the costs of reproduction for bighorn ewes (Ovis canadensis). Journal of Animal Ecology, 58: 785-796.
38. Festa-Bianchet, M. 1989. Survival of male bighorn sheep in southwestern Alberta. Journal of Wildlife Management, 53: 259-263.
37. Neuhaus P., B.Mainini, P.Ingold. 1989. Concerning the influence of hikers on the behaviour of the alpine marmot (Marmota m. marmota); Acta biologica montana IX: 107-114
36. King, W.J. 1989. Spacing of female kin in Columbian ground squirrels (Spermophilus columbianus). Canadian Journal of Zoology 67:91-95.
35. King, W.J. 1989. Kin-differential behaviour of adult female Columbian ground squirrels. Animal Behaviour 38:354-356.
1988
34. Dobson, F.S. 1988. The limits of phenotypic plasticity in life histories of Columbian ground squirrels. Pages 193 210 in: Evolution of Life Histories of Mammals (M.S. Boyce, ed.). Yale University Press, New Haven, Connecticut, 400 pp.
33. Murie, J.O., and M.A. Harris. 1988. Social interactions and dominance relationships between female and male Columbian ground squirrels. Canadian Journal of Zoology 66:1414-1420.
32. Festa-Bianchet, M. 1988. Nursing behaviour of bighorn sheep: correlates of ewe age, parasitism, lamb age, birthdate and sex. Animal Behaviour, 36: 1445-1454.
31. Festa-Bianchet, M. 1988. Seasonal range selection in bighorn sheep: conflicts between forage quality, forage quantity, and predator avoidance. Oecologia, 75: 580-586.
30. Festa-Bianchet, M. 1988. Birthdate and survival in bighorn lambs (Ovis canadensis). Journal of Zoology, 214: 653-661.
29. Festa-Bianchet, M. 1988. Age-specific reproduction of bighorn ewes in Alberta, Canada. Journal of Mammalogy, 69: 157-160.
1987
28. Dobson, F.S., and J.O. Murie. 1987. Interpretation of intraspecific life history patterns: evidence from Columbian ground squirrels. American Naturalist 129:382 397.
27. Murie, J.O., and F.S. Dobson. 1987. The costs of reproduction in female Columbian ground squirrels. Oecologia 73:1 6.
26. Wroot, A.J., S.A. Wroot, and J.O. Murie. 1987. Intraspecific variation in postnatal growth of Columbian ground squirrels (Spermophilus columbianus). Journal of Mammalogy 68:395-398.
25. Festa-Bianchet, M. 1987. Bighorn sheep, climbing accidents, and implications for mating strategy. Mammalia, 51: 618-620.
1986
24. Dobson, F.S., R.M. Zammuto, and J.O. Murie. 1986. A comparison of methods for studying life history in Columbian ground squirrels. Journal of Mammalogy 67:154 158.
23. Festa-Bianchet, M. 1986. Site fidelity and seasonal range use by bighorn rams. Canadian Journal of Zoology, 64: 2126-2132.
22. Festa-Bianchet, M. 1986. Seasonal dispersion of overlapping mountain sheep ewe groups. Journal of Wildlife Management, 50: 325-330.
1985
21. Dobson, F.S., and J.D. Kjelgaard. 1985. The influence of food resources on population dynamics in Columbian ground squirrels. Canadian Journal of Zoology 63:2095 2104.
20. Dobson, F.S., and J.D. Kjelgaard. 1985. The influence of food resources on life history in Columbian ground squirrels. Canadian Journal of Zoology 63:2105 2109.
19. King, W.J., and J.O. Murie. 1985. Temporal overlap of female kin in Columbian ground squirrels (Spermophilus columbianus). Behavioral Ecology and Sociobiology 16:337-341.
18. Davis, L.S., and J.O. Murie. 1985. Male territoriality and the mating system of Richardson’s ground squirrels (Spermophilus richardsonii). Journal of Mammalogy 66:268-279.
17. Festa-Bianchet, M. and J.T. Jorgenson. 1985. Use of xylazine and ketamine to immobilize bighorn sheep in Alberta. Journal of Wildlife Management, 49: 162-165.
1984
16. Dobson, F.S. 1984. Environmental influences on sciurid mating systems. Pages 229 249 in: The Biology of Ground Dwelling Squirrels (J.O. Murie and G.R. Michener, eds.). University of Nebraska Press, Lincoln, 459 pp.
15. Harris, M.A., and J.O. Murie. 1984. Discrimination of estreous status by scent in Columbian ground squirrels. Animal Behaviour 32:939-940.
14. Harris, M.A., and J.O. Murie. 1984. Interitance of nest sites in female Columbian ground squirrels. Behavioral Ecology and Sociobiology 15:97-102.
13. Murie, J.O., and D.A. Boag. 1984. The relationship of body weight to overwinter survival in Columbian ground squirrels. Journal of Mammalogy 65:688-690.
12. Festa-Bianchet, M. and W.J. King. 1984. Behavior and dispersal of yearling Columbian ground squirrels. Canadian Journal of Zoology, 62: 161-167.
1983
11. Harris, J.A., J.O. Murie, and J.A. Duncan. 1983. Responses of Columbian ground squirrels to playback of recorded calls. Zeitschrift fur Tierpsychologie-Journal of Comparative Ethology 63:318-330.
1982
10. Harris, M.A., and J.O. Murie. 1982. Responses to oral gland scents from different males in Columbian ground squirrels. Animal Behaviour 30:140-148.
9. Murie, J.O., and M.A. Harris. 1982. Annual variation of spring emergence and breeding in Columbian ground squirrels. Journal of Mammalogy 63:431-439.
8. Festa-Bianchet, M. and D.A. Boag. 1982. Territoriality in adult female Columbian ground squirrels. Canadian Journal of Zoology, 60: 1060-1066.
1981
7. Boag, D.A., and J.O. Murie. 1981. Weight kin relation to sex, age, and season in Columbian ground squirrels. Canadian Journal of Zoology 59:999-1004.
6. Boag, D.A., and J.O. Murie. 1981. Population ecology of Columbian ground squirrels in southwestern Alberta. Canadian Journal of Zoology 59:2230-2240.
5. Festa-Bianchet, M. 1981. Reproduction in yearling female Columbian ground squirrels (Spermophilus columbianus). Canadian Journal of Zoology, 59: 1032-1035.
1980
4. Murie, J.O., D.A. Boag, and V.K. Kivett. 1980. Litter size in Columbian ground squirrels (Spermophilus columbianus). Journal of Mammalogy 61:237-244.
3. Murie, J.O., and I.G. McLean. 1980. Copulatory plugs in ground squirrels. Journal of Mammalogy 61:355-356.
1978
2. Murie, J.O., and M.A. Harris. 1978. Territoriality and dominance in male Columbian ground squirrels (Spermophilus columbianus). Canadian Journal of Zoology 56:2402-2412.
1976
1. Kivett, V.K., J.O. Murie, and A.L. Steiner. 1976. Comparative study of scent gland location and related behavior in some northwestern Nearctic ground squirrel species (Sciuridae) – an evolutionary approach. Canadian Journal of Zoology 54:1294-1306.
