An effective artificial oviposition substrate for Pectinophora gossypiella

2018 ◽  
Vol 166 (7) ◽  
pp. 603-606 ◽  
Author(s):  
Rupa V. Nair ◽  
Subray P. Kamath
Keyword(s):  
Pectinophora Gossypiella ◽  
Oviposition Substrate ◽  
Artificial Oviposition Substrate

Artificial Oviposition Substrate for Rearing Orius insidiosus (Hemiptera, Anthocoridae)

1994 ◽  
Vol 4 (1) ◽  
pp. 88-91 ◽  
Author(s):  
C. Castane ◽  
F.G. Zalom
Keyword(s):  
Orius Insidiosus ◽  
Oviposition Substrate ◽  
Artificial Oviposition Substrate

scholarly journals Basic Studies Aiming at Orius minutus (Hemiptera: Anthocoridae) Mass-Rearing

Insects ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 77
Author(s):  
Hye-Jeong Jun ◽  
Kyoung-Su Kim ◽  
Eun-Hye Ham
Keyword(s):  
Brine Shrimp ◽  
Biological Control Agent ◽  
Mass Rearing ◽  
Control Agent ◽  
Artificial Substrates ◽  
Ephestia Cautella ◽  
Control Group ◽  
Significant Difference ◽  
Oviposition Substrate ◽  
Artificial Oviposition Substrate

This study presented biological and economic data for the mass-rearing of Orius minutus in Korea. Simplifying the mass-rearing process through an alternative diet and an artificial oviposition substrate is a prerequisite for enhancing the usability of this insect as a biological control agent. We compare the hatch rate of O. minutus eggs deposited on a plant substrate with that of eggs deposited on two artificial substrates, cork sheets and rubber. The results indicate that cork sheet is the most cost-effective artificial oviposition substrate for the mass-rearing of O. minutus. We also examine five feeding treatments that included two types of brine shrimp eggs and eggs of Ephestia cautella to compare the number of eggs laid in the fifth generation. We found no significant difference between the two treatment groups; 61.3 eggs were laid in the treatment group fed iron-coated brine shrimp and moth eggs, and 67.4 eggs were laid in the control group. The plant-free model developed in our study can reduce rearing costs by 70.5% compared to the conventional mass-rearing model.

Resistance to Cry1Ac and Cry2Ab in the pink bollworm,Pectinophora gossypiella

2016 ◽  
Author(s):  
Jeffrey A. Fabrick
Keyword(s):  
Pink Bollworm ◽  
Pectinophora Gossypiella

Efficiency of Different Control Methods Against the Cotton Pink Bollworm Pectinophora gossypiella (Saund.) in Cotton Fields in Egypt

2017 ◽  
Vol 8 (2) ◽  
pp. 59-64
Author(s):  
A. Darwish ◽  
A. Khidr ◽  
A. El-Heneidy ◽  
Huda Abdel-Aliem
Keyword(s):  
Pink Bollworm ◽  
Pectinophora Gossypiella ◽  
Control Methods ◽  
Cotton Fields

scholarly journals Need for growing non-Bt cotton refugia to overcome Bt resistance problem in targeted larvae of the cotton bollworms, Helicoverpa armigera and Pectinophora gossypiella

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Muhammad Rafiq Shahid ◽  
Muhammad Farooq ◽  
Muhammad Shakeel ◽  
Misbah Ashraf ◽  
Zia Ullah Zia ◽  
...  
Keyword(s):  
Helicoverpa Armigera ◽  
Larval Mortality ◽  
Pectinophora Gossypiella ◽  
Bt Cotton ◽  
Insect Larvae ◽  
Plant Parts ◽  
Arthropod Species ◽  
Bt Resistance ◽  
American Bollworm ◽  
Helicoverpa Armígera

Abstract Background The effectiveness of Bacillus thuringiensis (Bt) cotton against target arthropod larvae is decreasing day by day. The comparative effect of Bt expression among Bt cotton varieties and different plant parts was observed against the cotton bollworms: Helicoverpa armigera and Pectinophora gossypiella larvae. Results In the present study, larval mortality of H. armigera was higher than P. gossypiella among selected Bt cultivars. Median lethal concentration (LC50) values were 8.91, 13.4, 14.0, and 36.4 for P. gossypiella, while 5.91, 4.04, 2.37, and 8.26 for H. armigera of FH-142, MNH-886, IR-3701, and FH-Lalazar, respectively. These values depicted that P. gossypiella had more Bt resistance problem than H. armigera larvae. The host range of both targeted insect larvae was different from each other due to the polyphagous feeding nature of the larvae of H. armigera that feed on different host plants, but P. gossypiella attacked only cotton with monophagous feeding habit. It was also notable from results that Bt expression in reproductive parts where the attacked pink bollworm was lower than the American bollworm, so the former had the maximum chance of resistance due to repeated exposure to Bt. Conclusions It was concluded that farmers be advised to follow the practice of growing non-Bt as a refuge crop to reduce the problem of Bt resistance in the target arthropod species.

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