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X-WR-CALDESC:Events for Center for Behavior, Evolution, and Culture
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DTSTART;TZID=America/Los_Angeles:20120206T000000
DTEND;TZID=America/Los_Angeles:20120206T000000
DTSTAMP:20201013T004817Z
CREATED:20200922T215134Z
LAST-MODIFIED:20201013T004817Z
UID:4190-1328486400-1328486400@bec.ucla.edu
SUMMARY:Nga Nguyen - Behavioral biology and endocrinology of wild baboons and geladas in East Africa
DESCRIPTION:Nga Nguyen: CSU FullertonMaternal care is the most significant measure of successful adaptation among female mammals. Understanding the predictors of individual differences in offspring care is a major objective of mammalian reproductive biology. In this talk\, I will evaluate the impact of maternal and infant characteristics\, maternal hormones\, and friendships with males on the mother-infant relationship in wild baboons\, and discuss the potential fitness consequences of variation in these variables for mothers and infants. I will also discuss the results of my more recent research on reproductive biology in a wild gelada monkey population inhabiting one of the coldest and highest elevation environments of any non-human primate
URL:https://bec.ucla.edu/event/nga-nguyen-behavioral-biology-and-endocrinology-of-wild-baboons-and-geladas-in-east-africa/
CATEGORIES:Past Presentation,Presentation
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20120213T000000
DTEND;TZID=America/Los_Angeles:20120213T000000
DTSTAMP:20201013T004817Z
CREATED:20200922T215121Z
LAST-MODIFIED:20201013T004817Z
UID:4187-1329091200-1329091200@bec.ucla.edu
SUMMARY:Anne Kandler - Analysing Language Shift: the Example of Scottish Gaelic
DESCRIPTION:Anne Kandler: Santa Fe Institute‘Language shift’ is the process whereby members of a community in which more than one language is spoken abandon their original vernacular language in favour of another. We model the dynamic of language shift as a Lotka-Volterra type competition process in which the numbers of speakers of each language and of the bilingual sub-population vary as a function both of internal recruitment (as the net outcome of birth\, death\, immigration and emigration)\, and of gains and losses due to language shift. \nIn order to test the model we apply our approach to the English-Gaelic competition in Western Scotland. We are able to replicate the main dynamic of the shift process and give predictions about the future of the Gaelic language under unchanged environmental conditions. However\, the Gaelic language is subject to recent governmental interventions whose objective are stable societal bilingualism – by creating or preserving segregated sociolinguistic domains\, in each of which one or other language is the preferred medium of communication. To consider these effects we examine a second model in which bilingualism is no longer simply a transitional state. Superimposed on the basic shift dynamic there is an additional demand for the endangered language as the preferred medium of communication in some restricted sociolinguistic domains. \nThe creation of segregated sociolinguistic domains can lead to stable co-existence and therewith be a successful maintenance strategy. Our model enables us to estimate e.g. for the English-Gaelic competition the strength of interventions needed in order to maintain the bilingual sub-population. Further\, we analyse the crucial role of random drift for small numbers of speakers of the endangered languages and selective migration on the maintenance success.
URL:https://bec.ucla.edu/event/anne-kandler-analysing-language-shift-the-example-of-scottish-gaelic/
CATEGORIES:Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20120221T000000
DTEND;TZID=America/Los_Angeles:20120221T000000
DTSTAMP:20201013T004816Z
CREATED:20200922T215156Z
LAST-MODIFIED:20201013T004816Z
UID:4195-1329782400-1329782400@bec.ucla.edu
SUMMARY:Rebecca Sear - How much does family matter? A comparative study of kin influences on fertility
DESCRIPTION:Rebecca Sear: London School of EconomicsThe question of why people have the number of children that they do has still not been fully answered\, despite decades of research on this topic. Recently\, the hypothesis that humans are cooperative breeders has emerged in evolutionary anthropology\, which suggests that the support women receive in raising children from other individuals (particularly kin) may be a key part of the answer. Here\, I investigate whether the presence of kin influences a woman’s fertility\, using evidence from a wide range of populations. I first present the results of a systematic review of all published studies which have investigated correlations between kin availability and female fertility. This review demonstrates substantial evidence that the presence of family members is correlated with fertility\, but these results do not always show consistent relationships. In some cases\, particularly in high fertility societies and particularly for a woman’s in-laws\, kin increase fertility rates. In other analyses\, particularly of the influence of a woman’s own parents in low fertility societies\, kin slow down fertility. This literature is\, however\, very varied\, with different studies using different methodologies and different measures of fertility and kin availability. More comparative work is needed to elucidate exactly how kin might influence fertility rates. I conclude by outlining my current research programme which aims to investigate kin influences on fertility using existing large-scale demographic datasets\, using comparable methodologies in all datasets to facilitate comparisons between populations\, and to explore the pathways through which kin may influence fertility.
URL:https://bec.ucla.edu/event/rebecca-sear-how-much-does-family-matter-a-comparative-study-of-kin-influences-on-fertility/
CATEGORIES:Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20120227T000000
DTEND;TZID=America/Los_Angeles:20120227T000000
DTSTAMP:20201013T004816Z
CREATED:20200922T215156Z
LAST-MODIFIED:20201013T004816Z
UID:4196-1330300800-1330300800@bec.ucla.edu
SUMMARY:Steve Cole - Social regulation of gene expression: the primate genome’s social program
DESCRIPTION:Steve Cole: UCLA School of MedicineRelationships between genes and social behavior have historically been viewed as a one-way street\, with genes in control.  Recent analyses have challenged this view by discovering broad alterations in the expression of human and macaque genes as a function of differing socio-environmental conditions.  My talk summarizes the developing field of primate social genomics\, and its efforts to identify the types of genes subject to social regulation\, the biological signaling pathways mediating those effects\, and the genetic polymorphisms that moderate socio-environmental influences on human gene expression.  This approach provides a concrete molecular perspective on how external social environments interact with our genes to shape the functional characteristics of our bodies\, and alter our future biological and behavioral trajectories based on our individual transcriptional histories.  http://bec.ucla.edu/posters/Social Regulation of Human Gene Expression – Current Directions 2009.pdfhttp://bec.ucla.edu/posters/Irwin.pdf
URL:https://bec.ucla.edu/event/steve-cole-social-regulation-of-gene-expression-the-primate-genomes-social-program/
CATEGORIES:Past Presentation,Presentation
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