Jean Michel Gaillard

Summary

Country: France

Publications

  1. pmc Body mass and individual fitness in female ungulates: bigger is not always better
    J M Gaillard
    Unité Mixte de Recherche 5558 Biométrie et Biologie Evolutive Université Claude Bernard, Lyon 1, Villeurbanne, France
    Proc Biol Sci 267:471-7. 2000
  2. pmc Habitat-performance relationships: finding the right metric at a given spatial scale
    Jean Michel Gaillard
    Unité Mixte de Recherche CNRS Université Lyon 1 N degrees 5558 Biométrie et Biologie Evolutive, Bâtiment Gregor Mendel, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Philos Trans R Soc Lond B Biol Sci 365:2255-65. 2010
  3. pmc Population density and sex do not influence fine-scale natal dispersal in roe deer
    J M Gaillard
    UMR 5558 Biométrie et Biologie Evolutive, Bâtiment 711, UCB Lyon 1, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Proc Biol Sci 275:2025-30. 2008
  4. doi request reprint Vertebrate ageing: an evolutionary process with a genetic basis?
    Jean Michel Gaillard
    Laboratoire de Biométrie et Biologie Evolutive UMR 5558 CNRS Univ Lyon 1, 43 bd 11 nov, 69622, Villeurbanne Cedex, France
    Curr Biol 18:R130-1. 2008
  5. ncbi request reprint Generation time: a reliable metric to measure life-history variation among mammalian populations
    Jean Michel Gaillard
    Unite Mixte de Recherche 5558, Biometrie et Biologie Evolutive, Bâtiment 711, Universite Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Am Nat 166:119-23; discussion 124-8. 2005
  6. pmc Multiple causes of sexual segregation in European red deer: enlightenments from varying breeding phenology at high and low latitude
    Christophe Bonenfant
    UMR 5558 Biométrie et Biologie Evolutive, Universite Claude Bernard Lyon 1, 43, Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Proc Biol Sci 271:883-92. 2004
  7. doi request reprint How does climate change influence demographic processes of widespread species? Lessons from the comparative analysis of contrasted populations of roe deer
    Jean Michel Gaillard
    UMR 5558, Biometrie et Biologie Evolutive, Universite Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, Villeurbanne Cedex, France
    Ecol Lett 16:48-57. 2013
  8. pmc Variations in adult body mass in roe deer: the effects of population density at birth and of habitat quality
    Nathalie Pettorelli
    Unité Mixte de Recherche 5558 Biométrie et Biologie Evolutive, Centre National de la Recherche Scientifique, Universite Claude Bernard Lyon 1, Bâtiment 711, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Proc Biol Sci 269:747-53. 2002
  9. ncbi request reprint Spatial variation in springtime food resources influences the winter body mass of roe deer fawns
    Nathalie Pettorelli
    Unité mixte de Recherche CNRS No 5558 Biométrie et Biologie évolutive, Universite Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne, Cedex, France
    Oecologia 137:363-9. 2003
  10. doi request reprint Sex-specific senescence in body mass of a monogamous and monomorphic mammal: the case of Alpine marmots
    Marion Tafani
    Universite de Lyon, F 69000 Lyon Université Lyon 1 CNRS, UMR 5558, Laboratoire de Biometrie et Biologie Evolutive, F 69622, Villeurbanne, France
    Oecologia 172:427-36. 2013

Detail Information

Publications38

  1. pmc Body mass and individual fitness in female ungulates: bigger is not always better
    J M Gaillard
    Unité Mixte de Recherche 5558 Biométrie et Biologie Evolutive Université Claude Bernard, Lyon 1, Villeurbanne, France
    Proc Biol Sci 267:471-7. 2000
    ..Therefore, within a given range of phenotypic quality, bigger is not always better, for reasons which may differ between species...
  2. pmc Habitat-performance relationships: finding the right metric at a given spatial scale
    Jean Michel Gaillard
    Unité Mixte de Recherche CNRS Université Lyon 1 N degrees 5558 Biométrie et Biologie Evolutive, Bâtiment Gregor Mendel, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Philos Trans R Soc Lond B Biol Sci 365:2255-65. 2010
    ....
  3. pmc Population density and sex do not influence fine-scale natal dispersal in roe deer
    J M Gaillard
    UMR 5558 Biométrie et Biologie Evolutive, Bâtiment 711, UCB Lyon 1, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Proc Biol Sci 275:2025-30. 2008
    ..The absence of positive density dependence in fine-scale dispersal behaviour suggests that roe deer natal dispersal is a pre-saturation process that is shaped by heterogeneities in habitat quality rather than by density per se...
  4. doi request reprint Vertebrate ageing: an evolutionary process with a genetic basis?
    Jean Michel Gaillard
    Laboratoire de Biométrie et Biologie Evolutive UMR 5558 CNRS Univ Lyon 1, 43 bd 11 nov, 69622, Villeurbanne Cedex, France
    Curr Biol 18:R130-1. 2008
    ..This has now for the first time been shown to be the case in two free-living populations of mammals...
  5. ncbi request reprint Generation time: a reliable metric to measure life-history variation among mammalian populations
    Jean Michel Gaillard
    Unite Mixte de Recherche 5558, Biometrie et Biologie Evolutive, Bâtiment 711, Universite Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Am Nat 166:119-23; discussion 124-8. 2005
    ..We suggest that generation time is a reliable metric to measure life-history variation among mammalian populations and should be preferred to any arbitrary combination between vital rates...
  6. pmc Multiple causes of sexual segregation in European red deer: enlightenments from varying breeding phenology at high and low latitude
    Christophe Bonenfant
    UMR 5558 Biométrie et Biologie Evolutive, Universite Claude Bernard Lyon 1, 43, Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Proc Biol Sci 271:883-92. 2004
    ..We conclude that latitude-dependent breeding phenology shapes the seasonal pattern of sexual segregation and that sexual segregation in ungulates has multiple causes...
  7. doi request reprint How does climate change influence demographic processes of widespread species? Lessons from the comparative analysis of contrasted populations of roe deer
    Jean Michel Gaillard
    UMR 5558, Biometrie et Biologie Evolutive, Universite Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, Villeurbanne Cedex, France
    Ecol Lett 16:48-57. 2013
    ..We hypothesise that they should shift their distribution to richer, more heterogeneous landscapes to offset energetic requirements during the critical rearing stage...
  8. pmc Variations in adult body mass in roe deer: the effects of population density at birth and of habitat quality
    Nathalie Pettorelli
    Unité Mixte de Recherche 5558 Biométrie et Biologie Evolutive, Centre National de la Recherche Scientifique, Universite Claude Bernard Lyon 1, Bâtiment 711, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Proc Biol Sci 269:747-53. 2002
    ..Such delayed effects of density at birth on adult body mass probably affect population dynamics, and might constitute a mechanism by which delayed density-dependence occurs in ungulate populations...
  9. ncbi request reprint Spatial variation in springtime food resources influences the winter body mass of roe deer fawns
    Nathalie Pettorelli
    Unité mixte de Recherche CNRS No 5558 Biométrie et Biologie évolutive, Universite Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne, Cedex, France
    Oecologia 137:363-9. 2003
    ..The availability of these plants is therefore likely to be a key factor in the dynamics of roe deer populations...
  10. doi request reprint Sex-specific senescence in body mass of a monogamous and monomorphic mammal: the case of Alpine marmots
    Marion Tafani
    Universite de Lyon, F 69000 Lyon Université Lyon 1 CNRS, UMR 5558, Laboratoire de Biometrie et Biologie Evolutive, F 69622, Villeurbanne, France
    Oecologia 172:427-36. 2013
    ..This unexpected between-sex difference of senescence in a species subject to weak sexual selection might be shaped either by costs of an asymmetric intra-sex competition for mates or by costs of social thermoregulation...
  11. pmc Immune phenotype and body condition in roe deer: individuals with high body condition have different, not stronger immunity
    Emmanuelle Gilot-Fromont
    Universite de Lyon, Universite Lyon 1, UMR CNRS 5558, Villeurbanne, France
    PLoS ONE 7:e45576. 2012
    ....
  12. pmc Toward an identification of resources influencing habitat use in a multi-specific context
    Emmanuelle Richard
    Unite Mixte de Recherche 5558, Biometrie et Biologie Evolutive, Universite Claude Bernard Lyon 1, Bâtiment 711, Villeurbanne, France
    PLoS ONE 6:e29048. 2011
    ..Thus, it is necessary to maintain the openness of these areas and to keep animal density quite low as observed in these hunted populations to limit competition between these sympatric populations of herbivores...
  13. doi request reprint Population density and phenotypic attributes influence the level of nematode parasitism in roe deer
    Guillaume Body
    Universite de Lyon, Universite Lyon 1, UMR5558 Laboratoire de Biométrie et Biologie Evolutive, Villeurbanne, France
    Oecologia 167:635-46. 2011
    ..In the range of observed densities, the observed effect of density likely involves a variation of the exposure rate, as opposed to variation in host susceptibility...
  14. ncbi request reprint Selective harvesting and habitat loss produce long-term life history changes in a mouflon population
    Mathieu Garel
    Laboratoire de Biomérie et Biologie Evolutive UMR 5558, Universite Lyon 1, 43 Boulevard du 11 Novembre, 69622, Villeurbanne Cedex, France
    Ecol Appl 17:1607-18. 2007
    ..However, for long-term sustainable exploitation, harvest strategy should also ensure that selectively targeted males are allowed to contribute genetically to the next generations...
  15. ncbi request reprint Testing sexual segregation and aggregation: old ways are best
    Christophe Bonenfant
    Universite de Lyon, Universite Lyon 1, CNRS, UMR 5558, Laboratoire de Biométrie et Biologic Evolutive, 43 Boulevard du 11 Novembre 1918, Villeurbanne F 69622, France
    Ecology 88:3202-8. 2007
    ..The new SSAS was not prone to such limitations and allowed clear conclusions regarding whether males and females segregate, aggregate, or simply mix at random applicable to all species...
  16. doi request reprint Comparing free-ranging and captive populations reveals intra-specific variation in aging rates in large herbivores
    Jean François Lemaître
    Universite de Lyon, F 69000, Lyon Université Lyon 1, CNRS, UMR5558, Laboratoire de Biometrie et Biologie Evolutive, F 69622, Villeurbanne, France
    Exp Gerontol 48:162-7. 2013
    ..Additionally, our study clearly demonstrates that differences in aging rates between captive and free-ranging ruminants increased as species were more specialized on grass diets...
  17. doi request reprint Heterozygosity-fitness correlations revealed by neutral and candidate gene markers in roe deer from a long-term study
    Anne Da Silva
    Laboratoire de Biometrie et Biologie Evolutive, Unité Mixte de Recherche du Centre National de Recherche Scientifique No 5558, Universite Claude Bernard Lyon I, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Evolution 63:403-17. 2009
    ....
  18. doi request reprint High red deer density depresses body mass of roe deer fawns
    Emmanuelle Richard
    Unité Mixte de Recherche no 5558, Biometrie et Biologie Evolutive, Universite Lyon 1, 43 Boulevard du 11 Novembre 1918, 696220 Villeurbanne Cedex, France
    Oecologia 163:91-7. 2010
    ..Fawn mass of roe deer males and females responded in similar ways to changes in red deer density. Our study provides the first evidence of a negative response of roe deer performance to high red deer density...
  19. ncbi request reprint Are extra-pair young better than within-pair young? A comparison of survival and dominance in alpine marmot
    Aurélie Cohas
    Université de Lyon Université Lyon 1 CNRS UMR 5558, Laboratoire de Biometrie et Biologie Evolutive, Villeurbanne F 69622, France
    J Anim Ecol 76:771-81. 2007
    ..The fitness advantages of adopting such a mixed mating tactic are thus likely to be high for marmot females. We suggest that obtaining genetic benefits is the main evolutionary force driving extra-pair paternity in alpine marmots...
  20. ncbi request reprint Continuous cycling of grouped vs. solitary strategy frequencies in a predator-prey model
    Christophe Lett
    Laboratoire de Biometrie et Biologie Evolutive, UMR CNRS 5558, Universite Claude Bernard Lyon I, 43, Boulevard du 11 Novembre 1918, Villeurbanne 69622 Cedex, France
    Theor Popul Biol 65:263-70. 2004
    ..Under some conditions, continuous cycling of the relative frequencies of the different strategies may occur. In this situation, the proportions of grouped vs. solitary predators and prey oscillate over time...
  21. pmc The effects of a severe drought on mouflon lamb survival
    M Garel
    UMR 5558 Biométrie et Biologie Evolutive, Universite Claude Bernard Lyon 1, 69622 Villeurbanne Cedex, France
    Proc Biol Sci 271:S471-3. 2004
    ..7%) recorded during a four-month period is much higher than previous estimates of first-year mortality (less than 10%). We recommend accounting for climatic variation in summer when studying the population dynamics of ungulates...
  22. doi request reprint Maternal and individual effects in selection of bed sites and their consequences for fawn survival at different spatial scales
    Bram Van Moorter
    Unité Mixte de Recherche no 5558, Biometrie et Biologie Evolutive, Bâtiment 711, Universite Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
    Oecologia 159:669-78. 2009
    ..We discuss these results in the context of cross-generational effects in habitat selection across multiple scales, and the potential influence of the 'ghost of predation past'...
  23. doi request reprint Cohort effects in red squirrels: the influence of density, food abundance and temperature on future survival and reproductive success
    Sébastien Descamps
    Centre d Etudes Nordiques, Universite du Quebec a Rimouski, 300 Allee des Ursulines, Rimouski, Quebec G5L 3A1, Canada
    J Anim Ecol 77:305-14. 2008
    ..6. The general importance of silver-spoon effects for adult demographic performance might therefore be underestimated, and taking adult environment into account appears to be necessary when studying long-term cohort effects...
  24. pmc Predation risk and longevity influence variation in fitness of female roe deer (Capreolus capreolus L.)
    Petter Kjellander
    Department of Conservation Biology, Swedish University of Agricultural Sciences SLU, Grimsö Wildlife Research Station, S 730 91 Riddarhyttan, Sweden
    Proc Biol Sci 271:S338-40. 2004
    ..Our study demonstrates that predation risk, a component of environmental stochasticity, may prevent directional selection even when phenotypic quality influences individual fitness...
  25. ncbi request reprint Density-dependent responses of fawn cohort body mass in two contrasting roe deer populations
    Petter Kjellander
    Department of Conservation Biology, Swedish University of Agricultural Sciences SLU, Grimsö Wildlife Research Station, 730 91, Riddarhyttan, Sweden
    Oecologia 146:521-30. 2006
    ..Our results clearly demonstrate that absolute density is a poor predictor of roe deer performance and supports the view that habitat quality has an overwhelming importance for determining fawn body mass in roe deer populations...
  26. pmc Stochastic predation events and population persistence in bighorn sheep
    Marco Festa-Bianchet
    Université de Sherbrooke Département de biologie Sherbrooke, Quebec J1K 2R1, Canada
    Proc Biol Sci 273:1537-43. 2006
    ..We suggest that such processes may be common. In such cases, predator-prey equilibria may only occur at large geographical and temporal scales, and are unlikely with increasing habitat fragmentation...
  27. ncbi request reprint Antler size provides an honest signal of male phenotypic quality in roe deer
    Cecile Vanpe
    Laboratoire Comportement et Ecologie de la Faune Sauvage, Institut National de la Recherche Agronomique, BP 52627, F 31326 Castanet Tolosan Cedex, France
    Am Nat 169:481-93. 2007
    ..Antler size may therefore provide an honest signal of male phenotypic quality in roe deer. We discuss the implications of these results in terms of territory tenure and mating competition...
  28. pmc Bigger teeth for longer life? Longevity and molar height in two roe deer populations
    Vebjørn Veiberg
    Department of Arctic Biology, University Centre in Svalbard, PO Box 156, 9171 Longyearbyen, Norway
    Biol Lett 3:268-70. 2007
    ..This provides the first evidence that variation in longevity between populations can lead to differences in molar height within a species...
  29. ncbi request reprint Sex- and age-specific survival of the highly dimorphic Alpine ibex: evidence for a conservative life-history tactic
    Carole Toïgo
    Office National de la Chasse et de la Faune Sauvage, 5 allée de Bethléem, Z I Mayencin, 38610 Gieres, France
    J Anim Ecol 76:679-86. 2007
    ..Male ibex differ from similar-sized herbivores by showing a nearly indeterminate growth in horn size and body mass. By surviving to an advanced age, males may enjoy high reproductive success because of their large size...
  30. doi request reprint The risk of flawed inference in evolutionary studies when detectability is less than one
    Olivier Gimenez
    Centre d Ecologie Fonctionnelle et Evolutive, Centre National de Recherche Scientifique, Unite Mixte de Recherche 5175, 1919 Route de Mende, 34293 Montpellier Cedex 5, France
    Am Nat 172:441-8. 2008
    ..Because mark-recapture models provide an explicit way to integrate and reliably model the detection process, we strongly recommend their use to address questions in evolutionary biology...
  31. ncbi request reprint Female red squirrels fit Williams' hypothesis of increasing reproductive effort with increasing age
    Sébastien Descamps
    Chaire de Recherche du Canada en Conservation des Écosystèmes Nordiques et Centre d Études nordiques, Universite du Quebec a Rimouski, 300 Allee des Ursulines, Rimouski, Québec G5L3A1, Canada
    J Anim Ecol 76:1192-201. 2007
    ..We think this increase in reproductive effort is an adaptive response of females to declining reproductive values when ageing, thereby supporting Williams' prediction...
  32. doi request reprint Senescence rates are determined by ranking on the fast-slow life-history continuum
    Owen R Jones
    Division of Biology and Centre for Population Biology, Imperial College London, Silwood Park Campus, Ascot, Berks SL5 7PY, UK
    Ecol Lett 11:664-73. 2008
    ..Focusing on one aspect of life history - survival or recruitment - can provide reliable information on overall senescence...
  33. ncbi request reprint Longevity can buffer plant and animal populations against changing climatic variability
    William F Morris
    Biology Department, Duke University, Box 90338, Durham, North Carolina 27708 0338, USA
    Ecology 89:19-25. 2008
    ....
  34. doi request reprint Habitat dependence and correlations between elasticities of long-term growth rates
    Thomas H G Ezard
    Division of Biology, Faculty of Life Sciences, Imperial College London, Silwood Park, Ascot, Berkshire SL5 7PY, United Kingdom
    Am Nat 172:424-30. 2008
    ..This potentially informative detail is neglected by deterministic analysis, yet it highlights one difficulty when extrapolating results from long-term analysis to shorter-term environmental change...
  35. pmc Best squirrels trade a long life for an early reproduction
    Sébastien Descamps
    Chaire de Recherche du Canada en Conservation des Écosystèmes Nordiques et Centre d Études nordiques, Universite du Quebec a Rimouski, Rimouski, Quebec, Canada
    Proc Biol Sci 273:2369-74. 2006
    ..High quality individuals express the most profitable tactic by breeding early whereas low quality individuals do the best of a bad job by delaying their first reproduction...
  36. pmc Good reindeer mothers live longer and become better in raising offspring
    Robert B Weladji
    Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, PO Box 5003, 1432 As, Norway
    Proc Biol Sci 273:1239-44. 2006
    ..Our study reveals a more complex relationship between longevity and fitness in large mammals than the simple increase of the number of reproductive attempts when living longer...
  37. ncbi request reprint What limits the Serengeti zebra population?
    Sophie Grange
    Centre d Etudes Biologiques de Chize, CNRS UPR 1934, 79360 Beauvoir sur Niort, France
    Oecologia 140:523-32. 2004
    ..However, lion and hyena feed principally on adult zebras, and further work is required to discover the process involved in the high mortality of foals...
  38. doi request reprint Heterogeneity in individual quality overrides costs of reproduction in female reindeer
    Robert B Weladji
    Department of Biology, Concordia University, 7141 Sherbrooke St West, Montreal, QC H4B 1R6, Canada
    Oecologia 156:237-47. 2008
    ....