The influence of temperature on parental investiment in Common Fiscal and consequences for nestling growth

 

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dc.contributor.advisor Cunningham, Susan en_ZA
dc.contributor.advisor Martin, Rowan en_ZA
dc.contributor.advisor Ryan, Peter G en_ZA
dc.contributor.author Sadondo, Phenias en_ZA
dc.date.accessioned 2014-11-05T03:56:08Z
dc.date.available 2014-11-05T03:56:08Z
dc.date.issued 2014 en_ZA
dc.identifier.citation Sadondo, P. 2014. The influence of temperature on parental investiment in Common Fiscal and consequences for nestling growth. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/9192
dc.description Includes bibliographical references. en_ZA
dc.description.abstract Global climate models project a 1.5-4oC increase in the Earth’s temperature by 2100. Africa, especially southern Africa, is expected to experience not only an increase in average temperatures but also an increase in the frequency and duration of extreme temperature events. Increasing temperatures will result in increased vulnerability to heat and drought stress to biodiversity. A recent paper by Cunningham et al. (2013) showed that temperature has a negative effect on daily mass gain in the nestlings of Common Fiscal (Lanius collaris) breeding in the southern Kalahari. This effect may be driven by parents modifying their provisioning rates at high temperature, but the mechanisms underpinning the relationship are not known. I investigate the influence of temperature on parental investment in Common Fiscal and the consequences of high temperatures for nestling growth using data from videos that were filmed in the Kalahari, Northern Cape, South Africa. Daily mass gain by nestlings increased with increasing provisioning rate and decreased in relation to the proportion of time chicks spent panting. Prey provisioning decreased with temperature in larger broods, however, there was no evidence to suggest that parents trade off provisioning and nest attendance. This might mean that prey availability is reduced at high temperatures, or that parents prioritise their own thermoregulation over provisioning. en_ZA
dc.language.iso eng en_ZA
dc.title The influence of temperature on parental investiment in Common Fiscal and consequences for nestling growth en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Biological Sciences en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Sadondo, P. (2014). <i>The influence of temperature on parental investiment in Common Fiscal and consequences for nestling growth</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/9192 en_ZA
dc.identifier.chicagocitation Sadondo, Phenias. <i>"The influence of temperature on parental investiment in Common Fiscal and consequences for nestling growth."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2014. http://hdl.handle.net/11427/9192 en_ZA
dc.identifier.vancouvercitation Sadondo P. The influence of temperature on parental investiment in Common Fiscal and consequences for nestling growth. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2014 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9192 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Sadondo, Phenias AB - Global climate models project a 1.5-4oC increase in the Earth’s temperature by 2100. Africa, especially southern Africa, is expected to experience not only an increase in average temperatures but also an increase in the frequency and duration of extreme temperature events. Increasing temperatures will result in increased vulnerability to heat and drought stress to biodiversity. A recent paper by Cunningham et al. (2013) showed that temperature has a negative effect on daily mass gain in the nestlings of Common Fiscal (Lanius collaris) breeding in the southern Kalahari. This effect may be driven by parents modifying their provisioning rates at high temperature, but the mechanisms underpinning the relationship are not known. I investigate the influence of temperature on parental investment in Common Fiscal and the consequences of high temperatures for nestling growth using data from videos that were filmed in the Kalahari, Northern Cape, South Africa. Daily mass gain by nestlings increased with increasing provisioning rate and decreased in relation to the proportion of time chicks spent panting. Prey provisioning decreased with temperature in larger broods, however, there was no evidence to suggest that parents trade off provisioning and nest attendance. This might mean that prey availability is reduced at high temperatures, or that parents prioritise their own thermoregulation over provisioning. DA - 2014 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 T1 - The influence of temperature on parental investiment in Common Fiscal and consequences for nestling growth TI - The influence of temperature on parental investiment in Common Fiscal and consequences for nestling growth UR - http://hdl.handle.net/11427/9192 ER - en_ZA


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