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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
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Your Position :Home->Past Journals Catalog->2024年61 No.4

Fitness of the tomato leaf miner, Tuta absoluta, on different vegetable hosts in Shandong Province
Author of the article:GUO Wen-Xiu, QI Wei-Wei YAN Yue, XU Wen-Xin, TAN Run-Han, LI Li-Li, Lü Su-Hong, CUI Hong-Ying, SONG
Author's Workplace:Shandong Key Laboratory for Green Prevention and Control of Agricultural Pests, Institute of Plant Protection
Key Words:Tuta absoluta; host plant; oviposition; growth and development; population growth parameter; fitness
Abstract:

Abstract  [Aim]  To determine the relative suitability of different vegetables as host-plants for Tuta absoluta, a recent invasive pest in Shandong Province. [Methods]  The oviposition, development and population growth of T. absoluta on 9 commonly grown vegetables were compared. [Results]  Adults laid the most eggs on tomato and eggplant plants, and could complete their life history normally on these species with final survival rates of 44.21% and 40.64%, respectively. No significant difference was observed in developmental duration, survival rate or population growth parameters between       T. absoluta populations on tomato or eggplant plants (P>0.05). In contrast, very few eggs were laid on rape, coriander, cucumber and pepper. Although T. absoluta could complete development on these species, the final survival rate was only 11.72% and the developmental duration, survival rate, female fecundity and intrinsic rate of natural increase were significantly lower than those of populations on tomato plants. Although eggs were laid on coriander hatched, the larvae survived for only 1.67 d. Eggs were also laid on cucumber and pepper plants but no larvae were subsequently found. No eggs were found on spinach, chives or garlic. [Conclusion]  Tomato and eggplant plants were the most suitable of the host plants compared in this study. Monitoring and control should be strengthened to prevent outbreaks of T. absoluta on tomato and eggplant crops. Rape may be a secondary host of T. absoluta that contributes to its spread. When other, more suitable host plants are available, females do not lay eggs on spinach, chives or garlic plants, and larvae cannot complete their development on coriander, cucumber or chili. These plants could therefore be grown in rotation, or intercropped, with more tomato and eggplant crops, to control T. absoluta numbers.

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