The effects of feeding on different ecotypes of Alternanthera philoxeroides on the development and reproduction of Agasicles hygrophila
Author of the article:ZHOU Xi-Huan;WANG Zai-Ling;WANG Jia-Bo;ZHAO Chang-Wei;LI Chuan-Ren
Author's Workplace:Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center & College of Agriculture, Yangtze University, Jingzhou 434025, China;Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center & College of Agriculture, Yangtze University, Jingzhou 434025, China;Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center & College of Agriculture, Yangtze University, Jingzhou 434025, China;Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center & College of Agriculture, Yangtze University, Jingzhou 434025, China;Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center & College of Agriculture, Yangtze University, Jingzhou 434025, China
Key Words:Agasicles hygrophila; Alternanthera philoxeroides; ecotype; two-sex life table
Abstract:
[Objectives] To evaluate the effects of feeding on different Alternanthera philoxeroides ecotypes on the development and reproduction of Agasicles hygrophila. [Methods] We compiled a TWO-Sex life table for A. hygrophila fed on
different ecotypes of A. philoxeroides. [Results] A. philoxeroides ecotype had no
significant effect on the duration of the 2nd and 3rd larval instars, female longevity, male longevity or fecundity, of A.
hygrophila. However, A. hygrophila that fed on the aquatic ecotype
of A. philoxeroides had a shorter pupal developmental duration (6.28 d), higher
larval survival (99.00%) and higher pre-adult survival (95.00%), than those
fed on the terrestrial ecotype. Moreover, A. hygrophila that had fed on the terrestrial ecotype of A.
philoxeroides had
significantly lower intrinsic and finite rates of increase than those that had
fed on the aquatic ecotype. Prey ecotype had no significant effect on either
net growth rate (R0)
or mean generation
time (T). [Conclusion] A. hygrophila that fed on the
aquatic ecotype of A. philoxeroides had faster pupal development, higher
larval survival and higher pre-adult survival than those that fed on the
terrestrial ecotype. The
development and reproduction of A. hygrophila were not, however, significantly affected by feeding on the terrestrial ecotype of A. philoxeroides.