scholarly journals The Influence of Growth of Corn Plant on Larval Development of the Oriental Corn Borer, Ostrinia furnacalis MUTUURA et MUNROE

1980 ◽  
Vol 24 (3) ◽  
pp. 145-149 ◽  
Author(s):  
Osamu SAITO
Keyword(s):  
Larval Development ◽  
Ostrinia Furnacalis ◽  
Corn Plant ◽  
Corn Borer

Effects of water deficiency on preference and performance of an insect herbivore Ostrinia furnacalis

2021 ◽  
pp. 1-10
Author(s):  
M.Y. Duan ◽  
H. Zhu ◽  
H. Wang ◽  
S.Y. Guo ◽  
H. Li ◽  
...  
Keyword(s):  
Driving Forces ◽  
Oviposition Preference ◽  
Precipitation Pattern ◽  
Ostrinia Furnacalis ◽  
Oviposition Choice ◽  
Offspring Performance ◽  
Corn Borer ◽  
Limited Mobility ◽  
Offspring Fitness ◽  
And Performance

Abstract With further climate change still expected, it is predicted to increase the frequency with plants will be water stressed, which subsequently influences phytophagous insects, particularly Lepidoptera with limited mobility of larvae. Previous studies have indicated that oviposition preference and offspring performance of Lepidoptera insects are sensitive to drought separately. However, the integration of their two properties is not always seen. Here, we evaluated changes in oviposition selection and offspring fitness of a Lepidoptera insect under three water-stressed treatments using a model agroecosystem consisting of maize Zea mays, and Asian corn borer Ostrinia furnacalis. Results found that female O. furnacalis preferred to laying their eggs on well-watered maize, and then their offspring tended to survive better, attained bigger larvae mass, and developed more pupae and adults on the preferred maize. Oviposition selection of O. furnacalis positively correlated with height and leaf traits of maize, and offspring fitness positively related with water content and phytochemical traits of hosts. Overall, these results suggest that oviposition choice performed by O. furnacalis reflects the maximization of offspring fitness, supporting preference–performance hypothesis. This finding further highlights that the importance of simultaneous evaluation of performance and performance for water driving forces should be involved, in order to accurately predict population size of O. furnacalis under altered precipitation pattern.

scholarly journals Trichogramma ostriniae Is More Effective Than Trichogramma dendrolimi As a Biocontrol Agent of the Asian Corn Borer, Ostrinia furnacalis

Insects ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 70
Author(s):  
Yu Wang ◽  
Yang-Yang Hou ◽  
Giovanni Benelli ◽  
Nicolas Desneux ◽  
Asad Ali ◽  
...  
Keyword(s):  
Biocontrol Agent ◽  
Developmental Time ◽  
Economic Losses ◽  
Ostrinia Furnacalis ◽  
Female Progeny ◽  
Corn Borer ◽  
High Preference ◽  
Asian Corn Borer ◽  
Biocontrol Potential ◽  
Trichogramma Dendrolimi

The Asian corn borer (ACB), Ostrinia furnicalis, is a serious corn pest in south-east Asia, causing huge economic losses every year. Trichogramma dendrolimi and Trichogramma ostriniae, two egg parasitoids, have previously been identified as key biological control agents. To determine the age impact of ACB eggs on their effective biocontrol potential, herein we compared the biological parameters (i.e., number of parasitized eggs, emergence, developmental time, and sex ratio) of both parasitoids on ACB eggs of various ages (i.e., 0–4, 4–8, 8–12, 12–16, 16–24, 24–36, and 36–48 h old), respectively. Our results showed that the age of ACB eggs had a significant impact on the parasitization activity of T. dendrolimi in both choice and no-choice conditions. Trichogramma dendrolimi preferred to parasitize 0–8-h-old ACB eggs, and its parasitization dramatically declined on ACB eggs older than 8 h under choice and no-choice conditions. On the other hand, T. ostriniae showed high preference to parasitize all tested ACB egg ages. The age of ACB eggs had no significant impact on the parasitization of T. ostriniae under choice and no-choice conditions. Furthermore, the female progeny of T. dendrolimi decreased as the age of ACB increased, while no differences were found in female progeny of T. ostriniae. Trichogramma ostriniae also developed faster on each ACB egg age group in comparison with T. dendrolimi. Overall, the age of ACB eggs had a significant impact on T. dendrolimi performance, leading us to conclude that T. ostriniae is more effective than T. dendrolimi as a biocontrol agent of the ACB.

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