scholarly journals Threshold Temperature and Thermal Constants for the Development of Cotton Leaf Roller, Natarcha (Sylepta) derogata FABRICIUS (Lepidoptera: Pyralidae)

1980 ◽  
Vol 44 (2) ◽  
pp. 115-118,128 ◽  
Author(s):  
Masato TAMURA
Keyword(s):  
Threshold Temperature ◽  
Cotton Leaf ◽  
Leaf Roller ◽  
Thermal Constants ◽  
Lepidoptera Pyralidae

scholarly journals Silk Gland Gene Expression during Larval-Pupal Transition in the Cotton Leaf Roller Sylepta derogata (Lepidoptera: Pyralidae)

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0136868 ◽  
Author(s):  
Honghua Su ◽  
Yuming Cheng ◽  
Zhongyang Wang ◽  
Zhong Li ◽  
David Stanley ◽  
...  
Keyword(s):  
Gene Expression ◽  
Silk Gland ◽  
Cotton Leaf ◽  
Leaf Roller ◽  
Lepidoptera Pyralidae

scholarly journals Efficacy of Beauveria bassiana against the cotton leaf roller, Haritalodes (Syllepte) derogata (Fabricius, 1775) (Lepidoptera: Crambidae) under laboratory conditions.

2021 ◽  
Vol 157 ◽  
pp. 16254-16266
Author(s):  
Dannon H. Fabrice ◽  
Douro Kpindou O. Kobi ◽  
Toffa Mehinto Joelle ◽  
Zantchedji D. M. Désiré ◽  
Zinsou A. Valerien ◽  
...  
Keyword(s):  
Beauveria Bassiana ◽  
Field Experiments ◽  
Good Alternative ◽  
Lethal Concentration ◽  
High Yield ◽  
Cotton Leaf ◽  
Plant Laboratory ◽  
Leaf Roller ◽  
Synthetic Pesticides ◽  
Environmentally Friendly Method

Objective: The leaf-roller caterpillar Haritalodes (=Syllepte) derogata (Fabricius, 1775) (Lepidoptera: Crambidae) induces high yield losses by damaging cotton leaves and reducing the photosynthetic activity of the plant. Laboratory bioassays were carried to evaluate the effect of Beauveria bassiana on the survival of H. derogata larvae. Methodology and results: In the first trial, screening of thirteen B. bassiana isolates was performed on third larval instars at 107 conidia.mL-1 . In the second trial, effects of five concentrations (105 to 109 conidia.mL-1 ) of the three best isolates of the fungus were tested. Conidia suspension was applied on each larva topically. Germination rates of conidia used varied between 90.2% to 95.7%, 24 hours after incubation. Five isolates were found to be the most promising namely Bb116, Bb3, Bb11, Bb6 and Bb115. In the second bioassay, caterpillar mortality increased with fungal concentration. Lethal Concentration (LC50) was estimated to 1.18x1015 conidia.mL-1 , 1.75x1013 conidia.mL-1 , 1.75x1013 conidia.mL-1 , 9 days after inoculation for Bb3, Bb11 and Bb115, respectively. Conclusion and application of results: The use of B. bassiana as a biopesticide against H. derogata could be a good alternative method to control the pest. It is an environmentally friendly method with less side effects compared to the application of synthetic pesticides on cotton. This method could be tested in future station and field experiments. Keywords: Cotton, Integrated pest management, Haritalodes (=Syllepte) derogata, Beauveria bassiana, Lethal Concentration.

Complete mitochondrial genome of Cotton Leaf Roller Haritalodes derogata (Lepidoptera: Crambidae)

2015 ◽  
Vol 27 (4) ◽  
pp. 2833-2834 ◽  
Author(s):  
Jing Zhao ◽  
Yang Sun ◽  
Liubin Xiao ◽  
Yongan Tan ◽  
Lixin Bai
Keyword(s):  
Mitochondrial Genome ◽  
Complete Mitochondrial Genome ◽  
Cotton Leaf ◽  
Leaf Roller

Overwintering in the cotton leaf rollerSyllepte derogataF. (Lepidoptera: Pyralidae)

2011 ◽  
Vol 45 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Peiling Lu ◽  
Jian Chen ◽  
Minjuan Shi ◽  
Yizhong Yang
Keyword(s):  
Cotton Leaf ◽  
Lepidoptera Pyralidae

scholarly journals Ant-mealybug mutualism modulates the performance of co-occurring herbivores

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Chong Xu ◽  
Jia Su ◽  
Xiaobin Qu ◽  
Aiming Zhou
Keyword(s):  
Distribution Pattern ◽  
Uniform Distribution ◽  
Oviposition Behavior ◽  
Oviposition Preference ◽  
Mediation Effect ◽  
Cotton Field ◽  
Cotton Leaf ◽  
Cascading Effects ◽  
Leaf Roller ◽  
Egg Abundance

Abstract Mutualism between ants and honeydew producing hemipterans has been extensively studied. However, little is known on how ant-hemipteran mutualism impacts the co-occurring herbivores, which in turn affect the mutual relationship in ecosystems. Herein, we investigated the effect of ant-mealybug mutualism on the oviposition preference and spatial distribution of cotton leaf roller Sylepta derogata, a polyphagous herbivore, and in Apantetes derogatae performance, a larvae parasitoid of S. derogata. Leaf rollers constructed shelters for mealybugs to prevent them from enemy attack and preferred to lay eggs on plants with ant-mealybug mutualism. Egg abundance on mutualism-present plants was higher than on mutualism-absent plants. Leaf roller parasitoid A. derogatae showed higher parasitism on mutualism-absent plants. No obvious change in leaf roller egg abundance was observed when A. derogatae was excluded, suggesting that the parasitic pressure can also regulate the oviposition behavior of S. derogate. Apantetes derogatae showed higher aggressiveness in parasitizing leaf roller larvae at the absence of the mutualism. There was a definite correlation between leaf roller egg abundance and the number of patrolling ants on plants. Without ant-mealybug mutualism, S. derogata eggs showed a significantly aggregated distribution pattern, but a uniform distribution pattern was observed when the mutualism was present. Ant workers showed a consistently uniform distribution on plants. The results reveal a novel mediation effect of ant-mealybug association on the composition and structure of food webs in cotton field, which may contribute to a better understanding of the cascading effects of ant-hemipteran mutualism on other niche-related species in ecosystem.

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