Primates Small Groups/Family Units

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5 Terms

1
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What are the three types of small groups/family units?

  1. Pair bonds (monogamy)

  2. Co-operative breeders

  3. Organg-Utan

2
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What is involved in pair bonds (monogamy)?

  • Adult males and females are a similar size adult male and female

  • There is higher male investment in offspring

3
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What primates follow pair bonds (monogamy)?

Gibbons. They have a call every morning called a duet (vocalisations), and males spend significantly more time grooming females spend grooming males

4
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What is involved in co-operative breeders?

  • Polyandry (one female with several males) in marmosets and tamarins

  • One dominant pair

  • Helpers of both sexes

  • Increased male parental investment

  • Twin births common

  • Practices kin selection

5
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What do Organ-Utan’s do?

In sumatra and Borneo there are mother-infant pairs and lone males