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Effect of juvenile hormone and pyriproxyfen treatments on the production of S podoptera litura nuclear polyhedrosis virus
Author(s) -
Liao Z.H.,
Kuo T.C.,
Shih C.W.,
Tuan S.J.,
Kao Y.H.,
Huang R.N.
Publication year - 2016
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/eea.12499
Subject(s) - pyriproxyfen , biology , spodoptera litura , juvenile hormone , larva , zoology , toxicology , veterinary medicine , botany , medicine
Efficient production is essential for developing baculoviruses into marketable bioinsecticides. In this study, we evaluated how juvenile hormone ( JH ) III and the JH analog pyriproxyfen affected the production efficiency of S podoptera litura ( F abricius) ( L epidoptera: N octuidae) N ucleopolyhedrovirus (Splt NPV ) in Splt NPV ‐inoculated early sixth instars. Both the JH III and pyriproxyfen treatments significantly enhanced the body size and weight of S . litura , which resulted in a 1.5‐ to 2‐fold increase in the production of occlusion bodies ( OB s). The OB s obtained from JH ‐ and pyriproxyfen‐treated larvae were as pathogenic as those produced in untreated larvae. More importantly, JH ‐ or pyriproxy‐fen‐treated larvae consumed less than twice the amount of food consumed by two untreated larvae. These results indicate that JH and pyriproxyfen treatments improve the production efficiency of Splt NPV in S . litura . Splt NPV infection affected the development of S. litura not only as larvae, but also during subsequent growth stages and generations.