Murugan K, Jeyabalan D, Kumar N S, Nathan S S, Sivaramakrishnan S
Division of Entomology, Department of Zoology, Bharathiar University, Coimbatore 641046, India.
Indian J Exp Biol. 2000 Jun;38(6):598-603.
Influence of different physiological stages (young, mature and senescent) of Calotropis gigantea leaves on growth and reproductive ability of A. nerii and feeding, prey utilization, fecundity and lipid content of its predator M. sexmaculatus were investigated. Increased reproductive period, total life span and reproduction of nymphs per female of A. nerii were observed when reared on mature leaves. This relative preference of A. nerii and maximum utilization of mature leaves as compared to other physiological aged leaves are mainly due to changes in the chemical composition such as protein, carbohydrate, lipid, amino acid, nitrogen and phenolic of C. gigantea. Further, aphids reared on mature leaves influenced its predator's (M. sexmaculatus) growth, prey utilization and reproductive performances. Fecundity and longevity were high, while developmental time of predator was shorter on mature leaves fed aphid. Maximum prey utilization and increased efficiency of ingested and digested food of predator was observed on mature leaves reared aphid. The results are interpreted and discussed in relation to plant aphid and predator interaction (tritrophic).
研究了牛角瓜叶片不同生理阶段（幼嫩、成熟和衰老）对夹竹桃蚜生长和繁殖能力的影响，以及对其捕食者六斑月瓢虫取食、猎物利用、繁殖力和脂质含量的影响。以成熟叶片饲养时，观察到夹竹桃蚜的繁殖期延长、总寿命增加以及每只雌蚜的若虫繁殖量增多。与其他生理年龄的叶片相比，夹竹桃蚜对成熟叶片的这种相对偏好以及对成熟叶片的最大利用率，主要归因于牛角瓜化学成分的变化，如蛋白质、碳水化合物、脂质、氨基酸、氮和酚类物质。此外，以成熟叶片饲养的蚜虫影响了其捕食者（六斑月瓢虫）的生长、猎物利用和繁殖性能。在取食以成熟叶片饲养的蚜虫时，六斑月瓢虫的繁殖力和寿命较高，而发育时间较短。在以成熟叶片饲养的蚜虫上，观察到捕食者的猎物利用率最高，摄取和消化食物的效率提高。针对植物-蚜虫-捕食者相互作用（三级营养关系）对结果进行了解释和讨论。
