Predator-Prey Relationship between Oenopia sauzeti Mulsant (Coleoptera: Coccinellidae) and Myzus persicae (Sulzer) (Hemiptera: Aphididae): a Demographic Approach

• Main Authors: Bao-Ying Hsieh, 謝寶瑩
• Other Authors: 齊心
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/46866089039494827019

碩士 === 國立中興大學 === 昆蟲學系所 === 100 === The life table of Myzus persicae (Sulzer) reared on Brassica oleracea L. was studied under the greenhouse condition, and the average temperature and humidity during the study were 17.3 ± 1 oC and 78 ± 10% RH from 2011 January to March. The study of life table and predation rate of Oenopia sauzeti Mulsant fed on M. persicae were conducted in a growth chamber at 25oC, 65% RH, and a photoperiod of 12:12 (L:D) h. The raw data were analyzed based on the age-stage, two-sex life table to take both sexes and the variable developmental rate among individuals into consideration. The intrinsic rate of increase (r) for M. persicae was 0.2278 d-1 in the greenhouse. For O. sauzeti, the intrinsic rate of increase (r) , finite rate of increase (λ), net reproduction rate (R0), mean generation time (T), and gross reproduction rate (GRR) were 0.1431 d-1, 1.1538 d-1, 378.1 offspring, 41.5 d, and 422.4 offspring, respectively. The mean consumption rate of O. sauzeti for larval stage, female adult, and male adult were 308.7 ± 6.6, 2642.7 ±147.7, and 3090.1 ±79.6 aphids, respectively. The net predation rate (C0) was 3127.9 aphids per individual of O. sauzeti.