Inheritance of critical daylength among different geographic population in the Asian corn borer, Ostrinia furnacalis

2016 ◽  
Author(s):  
Lili Huang
Keyword(s):  
Ostrinia Furnacalis ◽  
Corn Borer ◽  
Geographic Population ◽  
Critical Daylength ◽  
Asian Corn Borer

Inheritance of photoperiodic control of larval diapause in the Asian corn borer Ostrinia furnacalis (Guenée)

2015 ◽  
Vol 105 (3) ◽  
pp. 326-334 ◽  
Author(s):  
L. Xiao ◽  
H.M. He ◽  
P.S. Zhong ◽  
S. Fu ◽  
C. Chen ◽  
...  
Keyword(s):  
Diapause Induction ◽  
Ostrinia Furnacalis ◽  
Corn Borer ◽  
Photoperiodic Control ◽  
Long Day ◽  
Critical Daylength ◽  
Asian Corn Borer ◽  
Photoperiodic Responses ◽  
Additive Inheritance ◽  
Diapause Incidence

AbstractThe Asian corn borer, Ostrinia furnacalis enters diapause as fully grown larvae. Owing to geographical variation in photoperiodic control of diapause, the subtropical strain from Hefei city (HF) enters diapause in response to short daylengths, whereas the tropical strain from Ledong county (LD) exhibits almost no diapause under the same conditions. The two strains were used in crosses to study the inheritance of diapause. The HF strain showed a typical long-day response with a critical daylength of approximately14.97 h at 22 °C, 14.60 h at 25 °C and 13.68 h at 28 °C. The LD strain showed weak photoperiodic responses at 22 and 25 °C; and the F1 progeny also showed a long-day response with significantly shorter critical daylength compared with the HF strain. However, the LD × HF (F × M) crosses had significantly longer critical daylengths than HF × LD crosses, indicating a sexual bias in the inheritance of diapause induction, with the male parent having more influence on the F1 progeny. The critical daylength in a backcross to HF was significantly longer than a backcross to LD. Whether the inheritance of diapause fits an additive hypothesis or not depended on photoperiod, with results from different photoperiods showing additive inheritance or incomplete dominance of either diapause or non-diapause. Unlike diapause induction, the duration of diapause for reciprocal crosses was equally influenced by each parent, suggesting that diapause incidence and maintenance are controlled by separate systems in O. furnacalis.

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.

scholarly journals Antifeedant and ovicidal activities of ginsenosides against Asian corn borer, Ostrinia furnacalis (Guenee)

PLoS ONE ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. e0211905 ◽  
Author(s):  
Shuangli Liu ◽  
Xiaohui Wang ◽  
Yonghua Xu ◽  
Rui Zhang ◽  
Shengyuan Xiao ◽  
...  
Keyword(s):  
Ostrinia Furnacalis ◽  
Corn Borer ◽  
Asian Corn Borer
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