A simple and low-cost laboratory rearing technique for pink bollworm, Pectinophora gossypiella (Suanders) (Lepidoptera: Gelechidae) using detached green bolls of cotton

Fand, Babasaheb B.; Nagrare, V. S.; Deshmukh, Vrushali; Naikwadi, Bhausaheb; Gokte‐Narkhedkar, Nandini; Waghmare, V. N.

doi:10.1007/s12600-019-00779-2

Cited by 17 publications

(28 citation statements)

References 22 publications

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“…The squares of 8–10 days old are considered the most susceptible for pink bollworm oviposition 17 , 51 . Our observations also suggested that it usually took 12–14 days from most susceptible square stage to appearance of first open white flower and this time was correlated with the time elapsed between oviposition to mid larval development of pink bollworm 16 , 52 . This alternately means that if the squares are infested at their most susceptible stage, it will lead to formation of rosette flower 2 weeks later, instead of normal white flower as observed in case of no infestation.…”

Section: Methodssupporting

confidence: 63%

Degree day-based model predicts pink bollworm phenology across geographical locations of subtropics and semi-arid tropics of India

Fand

Nagrare

Bal

et al. 2021

Sci Rep

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There is a global concern about the effects of climate change driven shifts in species phenology on crop pests. Using geographically and temporally extensive data set of moth trap catches and temperatures across the cotton growing states of India, we predicted the phenology of cotton pink bollworm Pectinophora gossypiella (Saunders). Our approach was centered on growing degree days (GDD), a measure of thermal accumulation that provides a mechanistic link between climate change and species’ phenology. The phenology change was predicted by calculating absolute error associated with DD and ordinal date, an alternative predictor of phenology, for peak moth abundance. Our results show that GDD outperformed the ordinal dates in predicting peak moth abundance in 6 out of 10 selected locations. Using established thresholds of 13.0/34.0 °C, mean DD accumulated between the consecutive moth peaks across different years were estimated at 504.05 ± 4.84. Seven generations were determined for pink bollworm in a cropping season, the length of which varied between 35 and 73 days in response to temperature. Pink bollworm population reached its peak during third generation which can be the target for management actions. The study provides essential information for developing pink bollworm management strategies under climate change.

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Section: Methodssupporting

confidence: 63%

Degree day-based model predicts pink bollworm phenology across geographical locations of subtropics and semi-arid tropics of India

Fand

Nagrare

Bal

et al. 2021

Sci Rep

Self Cite

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“…The bolls washed and disinfected with formalin (0.1%) by dipping in for 2~3 minutes to avoid secondary infection. The traces of formalin were removed by subsequent 2~3 washings and dried at room temperature Fand et al (2020). These bolls were dried with paper towel and left for ve minutes then offered to the larvae as diet (treatment,T 5 ) (Fig.…”

Section: Preparation Of Standard Laboratory Larval Diet and Experimen...mentioning

confidence: 99%

Impact of numerous larval diets on biology of pink bollworm Pectinophora gossypiella (Lepidoptera: Gelechiidae) under laboratory conditions

Akhtar

Arif

Gogi

et al. 2023

Preprint

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Pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) has become a potential pest of cotton by causing substantial yield losses around the world including Pakistan. As a limited past research investigations on dietary aspect of P. gossypiella are available, the present study was conducted. A number of biological aspects of P. gossypiella were studied by rearing on different larval diets that were prepared using indigenous elements. The standard/laboratory diet comprised of wheat germ-meal 34.5, casein 30.0, agar-agar 20.0, sucrose 10.0, brewer’s yeast 5.0, α-cellulose 1.0, potassium-sorbate1.5, niplagin 0.5, decavitamin 0.01, choline-chloride 0.06, maize-oil 3.30, honey 2.0, and water 730.0 g/ml/kg. Alternative natural diets cotton, okra seed sprouts, cotton bolls and okra fruit was also included in the study. Among artificial diets, larval development was completed in 19.68±0.05 days with weight of 20.18±0.20 mg at fourth instar fed on cottonseed meal-based diet instead of wheat germ-meal based diet. On same diet, 84.00±4.00%, 17.24±0.03 mg and 7.76±0.06 days was recorded as pupation period, pupal weight and pupal duration, respectively. Adult emergence, 76.00±1.00% was recorded from pupae collected larvae those raised on cottonseed meal based diet. These adults (males and females) lived for 40.25±0.10 and 44.34±0.11 days, respectively. Female moths deposited 21.28±0.04 eggs/day with 65.78±0.14% viability. The larval mortality was 37.20±1.36% was recorded while remaining (62.80±1.36%) larval population successfully pupated. Mal-pupation 12.00±1.41% was also documented. This research is of novel nature as it provides concise, objective oriented and practical interventions for economic and successful rearing of P. gossypiella.

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“…The treated green bolls from both the experiments described above were maintained in the laboratory at 27 ± 1°C temperature and 65 ± 5% RH till next 21 days to allow the development of larvae that entered the green bolls (Fand et al, 2020). After 21 days, the number of larvae alive, if any and the pupae formed inside the green bolls from various treatments were recorded separately for the two experiments by split opening the bolls using sharp knife.…”

Section: Larvicidal Actionmentioning

confidence: 99%

Timings of treatments determine the effectiveness of insecticides in controlling the cotton pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae)

Busnoor

Wadaskar

Fand

et al. 2023

Preprint

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The cryptic nature enabled reduced vulnerability to insecticidal control of the pink bollworm Pectinophora gossypiella (Saunders), a serious threat to transgenic cotton cultivation due to development of resistance against Bacillus thuringiensis (Bt) toxins necessitated determining the critical timings of spray applications on the effectiveness of its control. This study assessed the influence of egg age and location of larvae as exposed vs. burrowed inside the bolls on insecticide control efficacy. The results revealed significant decrease in ovicidal activity of test insecticides with the increase in age of eggs from one day old to three days old (paired t-test, P values <0.05). The larvae directly exposed to the insecticide residues on boll rind were more susceptible (>80% mortality) than that of larvae exposed after they burrowed inside the bolls (<49% mortality). The inhibitory effects of test insecticides on the developmental biology were more pronounced in the experiment on pre-larval release insecticide treatment compared to insecticide treatment given post-larval release and entry inside the bolls. Very low fecundity (< 5 eggs/female), higher effective deterrency (>96%) and higher avoidance index (>0.93) revealed oviposition deterrent activity of test insecticides. The test insecticides also exhibited significant adulticide action on PBW moths. The study has generated information crucial to the development of effective management strategy for cotton pink bollworm.

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A simple and low-cost laboratory rearing technique for pink bollworm, Pectinophora gossypiella (Suanders) (Lepidoptera: Gelechidae) using detached green bolls of cotton

Cited by 17 publications

References 22 publications

Degree day-based model predicts pink bollworm phenology across geographical locations of subtropics and semi-arid tropics of India

Degree day-based model predicts pink bollworm phenology across geographical locations of subtropics and semi-arid tropics of India

Impact of numerous larval diets on biology of pink bollworm Pectinophora gossypiella (Lepidoptera: Gelechiidae) under laboratory conditions

Timings of treatments determine the effectiveness of insecticides in controlling the cotton pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae)

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