Animal Behav Final Take home exam

Animal Behav Final Take home exam - Violet Maka Animal...

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Violet Maka Animal Behavior Final Exam April 26, 2011 Final Exam Take Home 4. In the article Sex differences in play behavior in juvenile tufted capuchin monkeys , Paukner hypothesizes that play behavior in juvenile primates improves motor skills that are required in later adult life and sex differences will be expected in juvenile play behavior when the adult primates assume sexually dimorphic roles. Male capuchin monkeys typically encounter aggressive fights with resident adult males because they constantly change social groups as adults. Adult females rarely participate in group defense, but mostly threats. Based on the differing antagonistic behavior, male capuchin monkeys may express more social play (wrestling and chasing others) than females. No sex differences are expected in nonsocial play. These hypothesis support the motor training hypothesis. The play behavioral analysis was conducted on five male and four female juvenile capuchin monkeys that were all captive born. Observation periods took place six times a week between May and September. A total of 132 observation hours were recorded and 12 hours per individual. Data was collected using the Pocket Observer. Social play included wrestling with and chasing/being chased by one or more other primates. Nonsocial play was accounted for as well and that included object play. Another type of nonsocial play was arboreal play, which included somersaults, swinging from own tail, etc. Time spent playing and type of play was recorded between genders. Males played for 1 hours and 45 min whereas females played 51 minutes on average in the total 12 hours 8 min and 30 s of play behavior observed. The Mann-Whitney tests indicated that males exhibited more spent more minutes with social play compared to females but no significant differences were noted in nonsocial play. Based on these results, it was confirmed that sex differences existed in play behavior. Males were more involved in social play and play longer, whereas females were less involved in social play but spent a similar amount of time with nonsocial play. Furthermore, the data was in line with the motor training hypothesis. Males participate in social play such as wrestling and chasing because they are frequently involved in aggressive encounters during adulthood. This type of play behavior allows juveniles to simulate fighting and develop the motor
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This note was uploaded on 05/03/2011 for the course BIOL 300 taught by Professor Toeph during the Spring '11 term at Brescia.

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Animal Behav Final Take home exam - Violet Maka Animal...

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