2010 Module Va Fish Feeding Behaviour

2010 Module Va Fish Feeding Behaviour - MODULE Va...

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MODULE Va PREDICTING AND MEASURING THE DISTRIBUTION OF ANIMALS AMONG DIFFERENT FEEDING AREAS Instructor Dr. Louis Lefebvre Objectives To work with living organisms in physiological and behavioural experiments. To learn the importance of making quantitative predictions and testing hypotheses in designing effective behavioural experiments, applying game theory to behaviour Work required Discuss the three predictions outlined in this module. Draft the expected graph for each of the scenarios. Divide into two teams, allot tasks, and practice the procedures needed for the feeding experiment. Observe and record the distributions and behaviour of fish during each of five feeding trials. Draw X-Y graphs of your team's results. Prepare pooled data of the whole lab section for next week's regression analysis. METHOD OF EVALUATION 90% will be based on your written report including behavioural observations and regression analysis. Criteria for grading will include the presentation, analysis and interpretation of the data as well as the clarity and stylistic correctness of your write-up: 25% for the introduction, abstract and title page; make sure you correctly state the underlined technical terms you learned in this module. 20% for the methods. 25% for the results and 20% for the discussion. 10% will be based on your TA's evaluation of your diligence, care, and skill in obtaining data and leaving your work area neat and tidy. A key part of this judgement will be based on your contribution to the group predictions and data taking . 1
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PREDICTING AND MEASURING THE DISTRIBUTION OF ANIMALS AMONG DIFFERENT FEEDING AREAS (1) INTRODUCTION Resources (food, shelter, mates) are unevenly distributed in the environment. Some areas contain higher resource densities than others and in choosing where to live or forage or court, animals should take into account these inequalities in resource distribution. They should also take into account what others are doing, because if everyone wants the same high quality resource, it may pay for some individuals to go for lower quality resources where there are fewer competitors. Two models were proposed a few decades ago to predict how animals should distribute themselves among areas of different value. The two models are based on the assumption that each individual should maximize the net rate of resource intake per unit time . When animals are competing against each other and the resources taken by one individual are not available to others, the costs and benefits of distribution are frequency-dependent , i.e. affected by what others are doing. (2) TWO MODELS OF ANIMAL DISTRIBUTION The first model, called the Ideal Free Distribution (IFD), predicts that animals will distribute themselves among the different areas in a one-to-one proportion with the food value of the areas.
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This note was uploaded on 02/21/2011 for the course BIOL 206 taught by Professor Prof during the Fall '08 term at McGill.

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2010 Module Va Fish Feeding Behaviour - MODULE Va...

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