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dc.contributor.authorTulloch, Bridgeten_NZ
dc.date.accessioned2007-02-21T16:57:41Z
dc.date.available2007-08-21T16:43:14Z
dc.date.issued2007en_NZ
dc.identifier.citationTulloch, B. (2007). The effects of relatedness, social contact, and sex on observational learning in rats (Rattus norvegicus) (Thesis, Master of Science (MSc)). The University of Waikato, Hamilton, New Zealand. Retrieved from https://hdl.handle.net/10289/2468en
dc.identifier.urihttps://hdl.handle.net/10289/2468
dc.description.abstractKin recognition is the ability to identify a conspecific as a relative and can occur even when animals are complete strangers. By being able to recognise relatives, animals are able to give preferential treatment to those with which they share genes. Recognition may occur by either direct familiarisation (learning a phenotypic cue that reliably correlates to kinship), or by indirect familiarisation (learning kinship relationships through previous encounters). Rats (Rattus norvegicus) can recognise kin, however to what degree kin recognition is mediated by genetics (direct familiarisation) or social relationships (indirect familiarisation) are unknown; the influences of kinship and familiarity on the ability to learn from a conspecific is also unknown. Furthermore, the sex of an animal can also influence its ability to learn but this effect has received little attention in the literature, particularly when considering observational learning tasks. I assessed if relatedness and/or familiarity influenced a rat's ability to learn through observation, and if gender relationships influence the learning process. Eighty rats ( observers ) were given the opportunity to observe a demonstrator rat press a joystick in a given direction to obtain a food reward. Observers watched a demonstrator that had one of the following relationships with them: related and familiar, related and unfamiliar, unrelated and familiar, or unrelated and unfamiliar. When observers were given the opportunity to manipulate the joystick, the number of sniffs of the joystick, the latency to first move the joystick and the total number of presses were recorded. Rats that were both familiar and related to the demonstrator consistently performed better than any other treatment group; furthermore, rats that were familiar with the demonstrator performed the task more efficiently than rats that were not familiar with the demonstrator. When the demonstrators and observers were related, the observers produced more presses and sniffs of the joystick while having a lower latency to the first push In addition, male observers learnt better than females regardless of the demonstrator sex, with males that were familiar to their demonstrator making nearly twice as many pushes than any other treatment group. The results from this study are discussed in relation to both the mechanisms of direct and indirect recognition and the potential adaptive value on kin discrimination in the learning process. The home range hypothesis may explain why gender differences in learning were found: male rats have larger home ranges than females. Male rat will regularly encounter more rats than females and would need to ascertain if unfamiliar individuals are relatives. Females remain closer to natal sites and as such are more likely to encounter kin and therefore may not need as well as developed kin recognition ability.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherThe University of Waikatoen_NZ
dc.rightsAll items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectRatsen_NZ
dc.subjectkin recognitionen_NZ
dc.subjectkin discriminationen_NZ
dc.subjectobservational learningen_NZ
dc.subjectsex differencesen_NZ
dc.subjectdirect familiarisationen_NZ
dc.subjectindirect familiarisationen_NZ
dc.subjectspatial recognitionen_NZ
dc.titleThe effects of relatedness, social contact, and sex on observational learning in rats (Rattus norvegicus)en_NZ
dc.typeThesisen_NZ
thesis.degree.disciplineSchool of Science & Technologyen_NZ
thesis.degree.grantorUniversity of Waikatoen_NZ
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (MSc)en_NZ
uow.date.accession2007-02-21T16:57:41Zen_NZ
uow.date.available2007-08-21T16:43:14Zen_NZ
uow.identifier.adthttp://adt.waikato.ac.nz/public/adt-uow20070221.165741en_NZ
uow.date.migrated2009-06-09T23:30:11Zen_NZ
pubs.place-of-publicationHamilton, New Zealanden_NZ


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