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12Group06x - It's one of several really interesting...

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  To group or not to group It’s one of several really interesting questions that can get one side-tracked when one is supposed to be focusing elsewhere but anyway, we’re going to consider it today at least briefly although we could go into more detail if we had the time, which we don’t because end of semester is rapidly approaching and we still have a lot of material to cover.
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  A continuum - from individuals to plagues of locusts, schools, crashes, … - which better? - how to model & axes?
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  Benefits? 1. Food efficiency (barracuda, wolves, …), kinetics & critical mass (leaf-cutter ants, helpers), finding (roosts & info-sharing (Ward & Zahavi) : follow good foragers (ospreys)) 2. Anti-predation - detection, cooperative defence, selfish herd (penguins at ice hole)
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  3. Two strategies (Weatherhead) - if info-sharing, good forager gain? - dominance structuring (vs. predators, weather, dung) - so, both food & shelter
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  4. Anti-competitor - food (lions vs. hyenas, swan families), mates (takeover: lions, langurs; attractiveness: manakins) 5. Division of labour & efficiency - colonial jellyfish, ants, termites
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