fitness (animals) 0.0 / 5 ? zoologybehaviourUniversityAll boards Created by: gingerninja46Created on: 24-04-17 19:56 what's fitness? measure of an individuals ability to produce offspring 1 of 20 name some fitness components viability, mating success, fecundity 2 of 20 what's direct fitness? gained through individual reproduction 3 of 20 what's indirect fitness? gained through non personal reproduction e.g granchildren 4 of 20 what's inclusive fitness? Hamilton (1964)- total of direct and indirect fitness 5 of 20 what's the coefficient of relatedness? the chance of two individuals possessing an identical allele/ percentage of genes shared by two individuals by common descent 6 of 20 what's the coefficient of relatedness between parent and offspring? what about grandparent and grandchild? 0.5 0.25 7 of 20 what equation does Campbell (1993) use to describe the coefficient of relatedness? r=0.5 to the power of L. L=number of generation links between two individuals concerned 8 of 20 what does inclusive fitness do? incorporates the potential costs and benefits of performing a given act to an individual and any of its genetic relatives 9 of 20 why is it difficult to directly measure fitness in the wild? would need complete pedigrees- often not enough information provided from previous generations and can't assign fathers with confidence 10 of 20 name some indirect measures of fitness? number of eggs laid, number of young hatched, number of young fledged, molecular markers 11 of 20 what did Griffin do in 2003? looked at relatedness in meerkat family using molecular markers 12 of 20 what's lifetime reproductive success? sum of the reproductive contributions from each of the ages to which an individual succeeds in surviving (Partridge, 1989) 13 of 20 why use lifetime reproductive success instead of the reproductive success of one year? chance events can influence success in one year, can have good years and bad years. 14 of 20 name a lifetime reproductive success study Clutton-Brock-Guinness red deer study on isle of Rhum since 1971 15 of 20 what does the red deer study do? follows individuals throughout their lives. they've been collared, tagged and details have been recorded. 16 of 20 what can affect the LRS in females? proximate factors- lifespan, calf mortality, fecundity. ultimate factors-resource access as adult, size of matrilineal group 17 of 20 what can affect the LRS in males? proximate factors-access to females, harem size, fighting ability, lifespan. ultimate factors-body size, birth weight 18 of 20 what did Clutton-Brock et al find regarding LRS in females? contribution to LRS broken down as follows: reproductive lifespan 26.5%, fecundity 7.7%, offspring survival 57.4% 19 of 20 what did Clutton-Brock et al find regarding LRS in males contribution to LRS broken down as follows: reproductive lifespan 6.86%, mating success 31.73%, offspring survival 19.56% 20 of 20
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