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X-WR-CALNAME:Center for Behavior, Evolution, and Culture
X-ORIGINAL-URL:https://bec.ucla.edu
X-WR-CALDESC:Events for Center for Behavior, Evolution, and Culture
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DTSTART;TZID=America/Los_Angeles:20070402T000000
DTEND;TZID=America/Los_Angeles:20070402T000000
DTSTAMP:20201013T004839Z
CREATED:20200922T213820Z
LAST-MODIFIED:20201013T004839Z
UID:4022-1175472000-1175472000@bec.ucla.edu
SUMMARY:Paul Griffiths - The Baldwin effect and genetic assimilation
DESCRIPTION:Paul Griffiths: University of Queensland Department of PhilosophyMany evolutionary processes have been described in which a trait that initially develops in the members of a population as a result of some interaction with the environment comes to develop without that interaction in their descendants. Waddington’s genetic assimilation is importantly different from the rest of this ‘Baldwiniana’ because his explanatory focus was not on the selection pressures at the point of transition\, but on how developmental systems come to be structured in such a way that these evolutionary transitions are readily accessible to evolving lineages. Waddington’s approach also replaces the simple contrast between ‘acquired’ and ‘innate’ with a non-dichotomous model of developmental canalisation and phenotypic plasticity that is in line with recent work on the evolution of development. From a Waddingtonian perspective evolutionary transitions between ‘innate’ and ‘acquired’ are only to be expected because those categories have little meaning in terms of developmental genetics and in some cases the difference between the ‘innate’ and ‘acquired’ may require only a minimal change in developmental mechanisms. But to see this it is necessary to use a gene concept suitable for thinking about development\, and not a gene concept designed for theoretical population genetics or for the prediction of phenotypic differences within populations.http://www.bec.ucla.edu/papers/Griffiths_2.4.07.doc
URL:https://bec.ucla.edu/event/paul-griffiths-the-baldwin-effect-and-genetic-assimilation/
CATEGORIES:Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20070409T000000
DTEND;TZID=America/Los_Angeles:20070409T000000
DTSTAMP:20201013T004839Z
CREATED:20200922T213821Z
LAST-MODIFIED:20201013T004839Z
UID:4023-1176076800-1176076800@bec.ucla.edu
SUMMARY:Hillard Kaplan - The human adaptive complex and the evolution of the 70 year lifespan
DESCRIPTION:Hillard Kaplan: University of New Mexico Department of AnthropologyThis paper will present an overview of age-specific mortality rates among hunter-gatherers and forager-horticulturalists. It will also present new data on resource transfers and physical rates of aging among Tsimane forager-horticulturalists in Bolivia. It will be argued that the balance of costs and benefits of maintenance and repair of the human soma have resulted in a modal adult age at death of 70 or so years. Seven decades of life may be considered the evolved species-typical lifespan of Homo sapiens.
URL:https://bec.ucla.edu/event/hillard-kaplan-the-human-adaptive-complex-and-the-evolution-of-the-70-year-lifespan/
CATEGORIES:Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20070416T000000
DTEND;TZID=America/Los_Angeles:20070416T000000
DTSTAMP:20201013T004838Z
CREATED:20200922T213821Z
LAST-MODIFIED:20201013T004838Z
UID:4024-1176681600-1176681600@bec.ucla.edu
SUMMARY:Caitlin O'Connell-Rodwell - The Importance of Communication and Culture to the African Elephant
DESCRIPTION:Caitlin O’Connell-Rodwell: Stanford University Department of Otolaryngology\, Head and Neck SurgeryThe structure of African elephant society is primarily matriarchal in nature\, where dominant female elephants make decisions for the herd as a whole with regard to safety\, movements\, resource choices and affiliations. Culture is often influenced by local environmental and social pressures\, as well as the character of individual herd members. Aspects of elephant society that contribute to survival will be discussed in the context of mechanisms that elephants employ to communicate over long distances. In addition\, new findings about elephant bull society will be reviewed\, highlighting the importance of bonding and mentoring adolescent delinquent males.http://www.bec.ucla.edu/papers/OConnellRodwell_4.16.07.pdf
URL:https://bec.ucla.edu/event/caitlin-oconnell-rodwell-the-importance-of-communication-and-culture-to-the-african-elephant/
CATEGORIES:Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20070423T000000
DTEND;TZID=America/Los_Angeles:20070423T000000
DTSTAMP:20201013T004838Z
CREATED:20200922T213822Z
LAST-MODIFIED:20201013T004838Z
UID:4025-1177286400-1177286400@bec.ucla.edu
SUMMARY:Joan Silk - Sex Ratio: Local Resource Competition and Local Resource Enhancement
DESCRIPTION:Joan Silk: UCLA Department of Anthropology
URL:https://bec.ucla.edu/event/joan-silk-sex-ratio-local-resource-competition-and-local-resource-enhancement/
CATEGORIES:Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20070425T000000
DTEND;TZID=America/Los_Angeles:20070425T000000
DTSTAMP:20201013T004838Z
CREATED:20200922T213822Z
LAST-MODIFIED:20201013T004838Z
UID:4026-1177459200-1177459200@bec.ucla.edu
SUMMARY:Nicola S. Clayton - Memories of Tomorrow:\nDo Animals Remember the Past and Plan for the Future?
DESCRIPTION:Nicola S. Clayton: University of Cambridge Department of Experimental PsychologyAccording to the mental time travel hypothesis only humans can mentally dissociate themselves from the present\, travelling backwards in time to recollect specific past events about what happened where and when (episodic memory) and travelling forwards in time to anticipate future needs (future planning). Studies on the behaviour of food-caching western scrub-jays question this assumption. In terms of retrospective cognition\, these birds remember the ‘what\, where and when’ of specific past caching episodes\, they keep track of how long ago they cached different types of perishable foods that decay at different rates\, and also remember whether another individual was present at the time of caching\, and if so\, which bird was watching when. Recent work demonstrates that the jays also make provision for a future need\, caching more food in places in which they will not be given breakfast the next morning than in places where they will be receive breakfast the next morning even though there is plenty of food available to them when they cache the food. Taken together these results challenge the mental time travel hypothesis by showing that some elements of both retrospective and prospective mental time travel appear not to be uniquely human.http://www.bec.ucla.edu/papers/Clayton_4.25.07a.pdf
URL:https://bec.ucla.edu/event/nicola-s-clayton-memories-of-tomorrowdo-animals-remember-the-past-and-plan-for-the-future/
CATEGORIES:Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20070430T000000
DTEND;TZID=America/Los_Angeles:20070430T000000
DTSTAMP:20201013T004838Z
CREATED:20200922T213835Z
LAST-MODIFIED:20201013T004838Z
UID:4027-1177891200-1177891200@bec.ucla.edu
SUMMARY:James Roney - Preliminary data testing an alternative explanation for menstrual phase effects on women's mate preferences
DESCRIPTION:James Roney: UC Santa Barbara Department of PsychologyMenstrual cycle shifts in women’s mate preferences have generally been interpreted as products of adaptations designed to alter behavior during the fertile window relative to other times in the cycle. I will discuss an alternative theory that posits that such shifts may be produced by mechanisms designed to use ovarian hormone concentrations to calibrate behaviors across different menstrual cycles. I will then present preliminary data showing that women’s estradiol concentrations correlate positively with their preferences for facial cues of men’s testosterone concentrations\, and that this relationship holds during times of the cycle that are outside the fertile window. These data do not argue definitively for either position but do at least suggest the plausibility of the between-cycle alternative explanation.
URL:https://bec.ucla.edu/event/james-roney-preliminary-data-testing-an-alternative-explanation-for-menstrual-phase-effects-on-womens-mate-preferences/
CATEGORIES:Past Presentation,Presentation
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