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Turnover in male dominance offsets the positive effect of polygyny on within-group relatedness.
Evidence of an association between cooperative breeding systems and average coefficients of relatedness between group members in vertebrates have led to increased interest in the social and ecological factors affecting average...
Early growth, dominance acquisition and lifetime reproductive success in male and female cooperative meerkats.
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 fitness in...
Social and environmental factors affect tuberculosis related mortality in wild meerkats.
Tuberculosis (TB) is an important and widespread disease of wildlife, livestock and humans world-wide, but long-term empirical datasets describing this condition are rare. A population of meerkats (Suricata suricatta) in South...
Signalling adjustments to direct and indirect environmental effects on signal perception in meerkats.
The efficiency of communication between animals is determined by the perception range of signals. With changes in the environment, signal transmission between a sender and a receiver can be influenced both directly, where the...
Trait-Based Vaccination of Individual Meerkats (Suricata suricatta) against Tuberculosis Provides Evidence to Support Targeted Disease Control.
Individuals vary in their potential to acquire and transmit infections, but this fact is currently underexploited in disease control strategies. We trialled a trait-based vaccination strategy to reduce tuberculosis in...
A multivariate analysis of genetic constraints to life history evolution in a wild population of red deer.
Craig A Walling, Michael B Morrissey, Katharina Foerster, Tim H Clutton-Brock, Josephine M Pemberton, Loeske EB Kruuk
May 03, 2021
Evolutionary theory predicts that genetic constraints should be widespread, but empirical support for their existence is surprisingly rare. Commonly applied univariate and bivariate approaches to detecting genetic constraints...
Maternal, social and abiotic environmental effects on growth vary across life stages in a cooperative mammal.
Resource availability plays a key role in driving variation in somatic growth and body condition, and the factors determining access to resources vary considerably across life stages. Parents and carers may exert important...
Evolution of social monogamy in primates is not consistently associated with male infanticide.
This is the accepted manuscript version of the article. The final published version is available from PNAS Online at http://www.pnas.org/content/111/17/E1674.extract.
Intergenerational effects of maternal birth season on offspring size in rural Gambia.
Ian J Rickard, Alexandre Courtiol, Andrew M Prentice, Anthony JC Fulford, Tim H Clutton-Brock, Virpi Lummaa
May 03, 2021
Environmental conditions experienced in early life can influence an individual's growth and long-term health, and potentially also that of their offspring. However, such developmental effects on intergenerational outcomes have...
Testing for genetic trade-offs between early- and late-life reproduction in a wild red deer population.
Daniel H Nussey, Alastair J Wilson, Alison Morris, Josephine Pemberton, Tim Clutton-Brock, Loeske EB Kruuk
May 03, 2021
The antagonistic pleiotropy (AP) theory of ageing predicts genetically based trade-offs between investment in reproduction in early life and survival and performance in later life. Laboratory-based research has shown that such...
Relative costs of offspring sex and offspring survival in a polygynous mammal.
Hannah Froy, Craig A Walling, Josephine M Pemberton, Tim H Clutton-Brock, Loeske EB Kruuk
Jan 23, 2018
Costs of reproduction are expected to be ubiquitous in wild animal populations and understanding the drivers of variation in these costs is an important aspect of life-history evolution theory. We use a 43 year dataset from a...
Social and endocrine correlates of immune function in meerkats
Kendra N Smyth, Nicholas M Caruso, Charli S Davies, Tim H Clutton-Brock, Christine M Drea
May 03, 2021
Social status can mediate effects on the immune system, with profound consequences for individual health; nevertheless, most investigators of status-related disparities in free-ranging animals have used faecal parasite burdens...
The HIF-1/glial TIM-3 axis controls inflammation-associated brain damage under hypoxia.
Han Seok Koh, Chi Young Chang, Sae-Bom Jeon, Hee Jung Yoon, Ye-Hyeon Ahn, Hyung-Seok Kim, In-Hoo Kim, Sung Ho Jeon, Randall S Johnson, Eun Jung Park
Mar 13, 2020
Inflammation is closely related to the extent of damage following cerebral ischaemia, and the targeting of this inflammation has emerged as a promising therapeutic strategy. Here, we present that hypoxia-induced glial T-cell...
Animals Astrocytes Brain Carotid Artery Common Cell Movement Cells Cultured Hepatitis A Virus Cellular Receptor 2 Hypoxia-Inducible Factor 1 alpha Subunit Hypoxia-Ischemia Brain Immunohistochemistry In Vitro Techniques Inflammation Ligation Magnetic Resonance Imaging Mesencephalon Mice Microglia Neuroglia Neutrophils RNA Messenger Receptors Virus Reverse Transcriptase Polymerase Chain Reaction
Meerkat helpers buffer the detrimental effects of adverse environmental conditions on fecundity, growth and survival.
Recent comparative studies show that cooperative breeding is positively correlated with harsh and unpredictable environments and it is suggested that this association occurs because helpers buffer the negative effects of adverse...
The role of selection and evolution in changing parturition date in a red deer population.
Timothée Bonnet, Michael B Morrissey, Alison Morris, Sean Morris, Tim H Clutton-Brock, Josephine M Pemberton, Loeske E B Kruuk
Dec 06, 2019
Changing environmental conditions cause changes in the distributions of phenotypic traits in natural populations. However, determining the mechanisms responsible for these changes-and, in particular, the relative contributions...
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