Browsing Natural and Agricultural Sciences by UP Author "Clutton-Brock, Tim H."

Browsing Natural and Agricultural Sciences by UP Author "Clutton-Brock, Tim H."

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  • Dominance loss and tenure maintenance in Kalahari meerkats 
    Duncan, Chris; Thorley, Jack; Manser, Marta B.; Clutton-Brock, Tim H. (Oxford University Press, 2023-11)
    In many social species, both the acquisition of dominance and the duration that individuals maintain their status are important determinants of breeding tenure and lifetime reproductive success. However, few studies have ...
  • Early growth, dominance acquisition and lifetime reproductive success in male and female cooperative meerkats 
    English, Sinead; Huchard, Elise; Nielsen, Johanna F.; Clutton-Brock, Tim H. (2013-11)
    In polygynous species, variance in reproductive success is higher in males than females. There is consequently stronger selection for competitive traits in males and early growth can have a greater influence on later ...
  • Effects of climate change on pup growth and survival in a cooperative mammal, the meerkat 
    Van de Ven, Tanja M.F.N.; Fuller, Andrea; Clutton-Brock, Tim H. (Wiley, 2020-01)
    Please read abstract in the article.
  • The effects of recruitment to direct predator cues on predator responses in meerkats 
    Zottl, Markus; Lienert, Raphaela; Clutton-Brock, Tim H.; Millesi, Eva; Manser, Marta B. (Oxford University Press, 2013)
    Behavioral responses of animals to direct predator cues (DPC; e. g. urine) are common and may improve their survival. We investigated wild meerkat (Suricata suricatta) responses to DPCs by taking an experimental approach. ...
  • The evolution of indiscriminate altruism in a cooperatively breeding mammal 
    Duncan, Chris; Gaynor, David; Clutton-Brock, Tim H.; Dyble, Mark (University of Chicago Press, 2019-06)
    Kin selection theory suggests that altruistic behaviors can increase the fitness of altruists when recipients are genetic relatives. Although selection can favor the ability of organisms to preferentially cooperate with ...
  • Exceptional endocrine profiles characterise the meerkat : sex, status, and reproductive patterns 
    Davies, Charli S.; Smyth, Kendra N.; Greene, Lydia K.; Walsh, Debbie A.; Mitchell, Jessica; Clutton-Brock, Tim H.; Drea, Christine M. (Nature Publishing Group, 2016-10-18)
    In vertebrates, reproductive endocrine concentrations are strongly differentiated by sex, with androgen biases typifying males and estrogen biases typifying females. These sex differences can be reduced in female-dominant ...
  • Factors affecting the reproductive success of dominant male meerkats 
    Spong, Goran F.; Hodge, Sarah J.; Young, Andrew J.; Clutton-Brock, Tim H. (Blackwell, 2008)
    Identifying traits that affect the reproductive success of individuals is fundamental for our understanding of evolutionary processes. In cooperative breeders, a dominant male typically restricts mating access to the ...
  • Factors predicting the frequency, likelihood and duration of allonursing in the cooperatively breeding meerkat 
    MacLeod, Kristy J.; Nielsen, Johanna F.; Clutton-Brock, Tim H. (Elsevier, 2013)
    Allolactation, the nursing of another female’s offspring, occurs most commonly where several females raise young simultaneously in the same nest, but also occurs in singular breeders where nonbreeders also lactate for ...
  • Genetic variance in fitness indicates rapid contemporary adaptive evolution in wild animals 
    Bonnet, Timothee; Morrissey, Michael B.; De Villemereuil, Pierre; Alberts, Susan C.; Arcese, Peter; Bailey, Liam D.; Boutin, Stan; Brekke, Patricia; Brent, Lauren J.N.; Camenisch, Glauco; Charmantier, Anne; Clutton-Brock, Tim H.; Cockburn, Andrew; Coltman, David W.; Courtiol, Alexandre; Davidian, Eve; Evans, Simon R.; Ewen, John G.; Festa-Bianchet, Marco; De Franceschi, Christophe; Gustafsson, Lars; Honer, Oliver P.; Houslay, Thomas M.; Keller, Lukas F.; Manser, Marta B.; McAdam, Andrew G.; McLean, Emily; Nietlisbach, Pirmin; Osmond, Helen L.; Pemberton, Josephine M.; Postma, Erik; Reid, Jane M.; Rutschmann, Alexis; Santure, Anna W.; Sheldon, Ben C.; Slate, Jon; Teplitsky, Celine; Visser, Marcel E.; Wachter, Bettina; Kruuk, Loeske E.B. (American Association for the Advancement of Science, 2022-05)
    The rate of adaptive evolution, the contribution of selection to genetic changes that increase mean fitness, is determined by the additive genetic variance in individual relative fitness. To date, there are few robust ...
  • Gut microbiota individuality is contingent on temporal scale and age in wild meerkats 
    Risely, Alice; Schmid, Dominik W.; Muller-Klein, Nadine; Wilhelm, Kerstin; Clutton-Brock, Tim H.; Manser, Marta B.; Sommer, Simone (Royal Society, 2022-08)
    Inter-individual differences in gut microbiota composition are hypothesized to generate variation in host fitness—a premise for the evolution of host–gut microbe symbioses. However, recent evidence suggests that gut microbial ...
  • Higher temperature extremes exacerbate negative disease effects in a social mammal 
    Paniw, Maria; Duncan, Chris; Groenewoud, Frank; Drewe, Julian A.; Manser, Marta B.; Ozgul, Arpat; Clutton-Brock, Tim H. (Nature Research, 2022-03)
    One important but understudied way in which climate change may impact the fitness of individuals and populations is by altering the prevalence of infectious disease outbreaks. This is especially true in social species where ...
  • The importance of being beta : female succession in a cooperative breeder 
    Duncan, Chris; Gaynor, David; Clutton-Brock, Tim H. (Elsevier, 2018-12)
    In singular cooperative breeders few females breed successfully, but those that acquire dominant positions can achieve high levels of breeding success, leading to strong selection for traits that enable individuals to ...
  • Inbreeding and inbreeding depression of early life traits in a cooperative mammal 
    Nielsen, Johanna F.; English, Sinead; Goodall-Copestake, Will P.; Wang, Jinliang; Walling, Craig A.; Bateman, Andrew W.; Kruuk, Loeske E.B.; Clutton-Brock, Tim H.; Pemberton, Josephine M. (Wiley-Blackwell, 2012-06)
    Mating between relatives often results in negative fitness consequences or inbreeding depression. However, the expression of inbreeding in populations of wild cooperative mammals and the effects of environmental, maternal ...
  • Incidence and biomarkers of pregnancy, spontaneous abortion, and neonatal loss during an environmental stressor : implications for female reproductive suppression in the cooperatively breeding meerkat 
    Dimac-Stohl, Kristin A.; Davies, Charli S.; Grebe, Nicholas M.; Stonehill, Alexandra C.; Greene, Lydia K.; Mitchell, Jessica; Clutton-Brock, Tim H.; Drea, Christine M. (Elsevier, 2018-09)
    Meerkats are group-living, insectivorous herpestids in which subordinate members provide extensive care for the dominant female's young. In contrast to some cooperative breeders, subordinate female meerkats are physiologically ...
  • Increased food availability raises eviction rate in a cooperative breeding mammal 
    Gaynor, David; Clutton-Brock, Tim H. (The Royal Society, 2017)
    In group-living mammals, the eviction of subordinate females from breeding groups by dominants may serve to reduce feeding competition or to reduce breeding competition. Here, we combined both correlational and ...
  • Increases in glucocorticoids are sufficient but not necessary to increase cooperative burrowing in Damaraland mole-rats 
    Vullioud, Philippe; Mendonca, Rute; Glauser, Gaetan; Bennett, Nigel Charles; Zottl, Markus; Katlein, Nathan; Leal, Rita; Fuerst, Romain; Clutton-Brock, Tim H. (Elsevier, 2021-09)
    Despite widespread interest in the evolution of cooperative behaviour, the physiological mechanisms shaping their expression remain elusive. We tested the hypothesis that glucocorticoid (GC) hormones affect cooperative ...
  • The influence of stress hormones and aggression on cooperative behaviour in subordinate meerkats 
    Dantzer, Ben; Goncalves, Ines Braga; Spence-Jones, Helen C.; Bennett, Nigel Charles; Heistermann, Michael; Ganswindt, Andre; Dubuc, Constance; Gaynor, David; Manser, Marta B.; Clutton-Brock, Tim H. (The Royal Society, 2017-09)
    In cooperative breeders, aggression from dominant breeders directed at subordinates may raise subordinate stress hormone (glucocorticoid) concentrations. This may benefit dominants by suppressing subordinate reproduction ...
  • An intergenerational androgenic mechanism of female intrasexual competition in the cooperatively breeding meerkat 
    Drea, Christine M.; Davies, Charli S.; Greene, Lydia K.; Mitchell, Jessica; Blondel, Dimitri V.; Shearer, Caroline L.; Feldblum, Joseph T.; Dimac-Stohl, Kristin A.; Smyth-Kabay, Kendra N.; Clutton-Brock, Tim H. (Nature Publishing Group, 2021-12-17)
    Female intrasexual competition can be intense in cooperatively breeding species, with some dominant breeders (matriarchs) limiting reproduction in subordinates via aggression, eviction or infanticide. In males, such ...
  • Low costs of allonursing in meerkats : mitigation by behavioral change? 
    MacLeod, Kristy J.; Clutton-Brock, Tim H. (Oxford University Press, 2015-05)
    Allonursing, the nursing of another female’s offspring, is assumed to impose a substantial energetic cost given the high cost of lactation to mothers. However, these costs have not been quantified. In cooperatively ...
  • Male immigration triggers increased growth in subordinate female meerkats 
    Dubuc, Constance; Clutton-Brock, Tim H. (Wiley Open Access, 2019-02)
    There is increasing evidence that some vertebrates can adjust their growth rate in relation to changes in the social context that affect their probability of breeding. Here, we show that, in meerkats (Suricata suricatta), ...