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Population consequences of individual-level mechanisms through dynamic energy budgets

Population consequences of individual-level mechanisms through dynamic energy budgets. Tjalling Jager Dept. Theoretical Biology. Kooijman (2000). Kooijman (in press). What is DEB?. Quantitative theory for metabolic organisation; ‘first principles’ time, energy and mass balance

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Population consequences of individual-level mechanisms through dynamic energy budgets

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  1. Population consequences of individual-level mechanismsthrough dynamic energy budgets Tjalling Jager Dept. Theoretical Biology

  2. Kooijman (2000) Kooijman (in press) What is DEB? Quantitative theory for metabolic organisation; ‘first principles’ • time, energy and mass balance Life-cycle of the individual • links levels of organisation: molecule  ecosystems

  3. food faeces assimilation reserves somatic maintenance maturity maintenance  1- maturity gametes structure Metabolic organisation • Traits: • growth curve • age at 1st repro • repro rate with age • feeding rates • … ?

  4. reserves somatic maintenance maturity maintenance  1- maturity structure for embryos … • Traits: • egg size • hatching time • hatchling size • …

  5. Scope of PhD project • How do effects at energy budget propagate to population level? • emphasis on embryonic development • Organism: the pond snail (Lymnaea stagnalis) • Not specific for regulatory framework or chemical

  6. Project structure • Proposed modelling approach: • individual model: DEB3 model in Matlab • population model: start with Euler-Lotka equation … • Experimental work: • start from existing data at individual level • additional experiments performed at INRA, France • Validation of population effects? • not foreseen … • Practical application? • demonstrate population consequences based on lit. data • collaborate in DEB-2 project (INRA, France) with EDs

  7. Advertisement Vacancies Still looking for a CREAM PhD student … Courses International DEB Tele Course 2011 Symposia 2nd International DEB Symposium 2011 in Lisbon More information: http://www.bio.vu.nl/thb

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