Boivin Guy
Department of Natural Resource Sciences (Entomology), Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, Canada.
Neotrop Entomol. 2010 Jul-Aug;39(4):457-63. doi: 10.1590/s1519-566x2010000400001.
Several proxies can be used to estimate the fitness of egg parasitoids: size, longevity, fecundity, mating ability and vagility. All these proxies are positively correlated with the lifetime fitness gain of an individual. However, the phenotypic plasticity, which is the ability of a genotype to produce distinct phenotypes depending on environmental conditions, may alter the value of these proxies. Host related factors (host species and quality), competition and duration of development will influence the proxies expressed by a given phenotype. When the phenotype is modified by the temperature at which an individual develops, the resulting phenotype will vary based on the life history strategy of the parasitoid. While in koinobiont species an increase in size is positively correlated with longevity and fecundity, the reverse occurs with idiobiont parasitoids. Using size as a proxy could thus be misleading depending on the factors that influence the size of the adult.
体型、寿命、繁殖力、交配能力和迁移能力。所有这些指标都与个体一生的适合度增益呈正相关。然而，表型可塑性，即基因型根据环境条件产生不同表型的能力，可能会改变这些指标的值。与宿主相关的因素（宿主物种和质量）、竞争和发育持续时间会影响给定表型所表现出的指标。当表型因个体发育时的温度而改变时，所产生的表型将根据寄生蜂的生活史策略而有所不同。在过寄生性物种中，体型增大与寿命和繁殖力呈正相关，而异寄生性寄生蜂则相反。因此，根据影响成虫体型的因素，将体型用作指标可能会产生误导。
