Effect of different host plants on the growth,development and fecundity of Zeugodacus tau(Walker)
[Aim]The objective of this study was to investigate the impact of cucurbit family and Solanaceae on the growth,develop-ment,and reproduction of Zeugodacus tau.[Method]To construct a two-sex life table of Z.tau on Cucurbita moschata,Cucumis sa-tivus,Benincasa hispida,and Solanum lycopersicum and assess the adaptability of Z.tau to these four host plants.[Result]The pre-adult survival rate(87.96%)and fecundity(361.26 eggs·female-1)of Z.tau fed on C.moschata were significantly higher than those fed on C.sativus(80.00%and 288.34 eggs·female-1,respectively),B.hispida(72.03%and 84.80 eggs·female-1,re-spectively),and S.lycopersicum(69.69%and 76.55 eggs·female-1,respectively).Moreover,the intrinsic growth rate(0.10)and net reproductive rate(90.63)of Z.tau on C.moschata were significantly higher than those on C.sativus(0.08 and 74.37,re-spectively),B.hispida(0.07 and 35.62,respectively),and S.lycopersicum(0.07 and 26.03,respectively).[Conclusion]Z.tau was able to complete its generation cycle in all four host fruits.However,C.sativus was the most suitable host for Z.tau.
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