Effect of temperature and relative humidity on the rate of infestation of bitter gourd by the fruit fly, Bactrocera cucurbitae (Coquillett) (Diptera : Tephritidae)

2007 ◽  
Vol 22 (0) ◽  
Author(s):  
B Sikdar ◽  
M Shafiullah ◽  
Rashed Zaman ◽  
MF Kabir ◽  
MA Uddin
Keyword(s):  
Relative Humidity ◽  
Fruit Fly ◽  
Bitter Gourd ◽  
Effect Of Temperature ◽  
Bactrocera Cucurbitae

scholarly journals Impacts of temperature, relative humidity and total number of fruits on cucurbit fruit fly infestations under field condition

2015 ◽  
Vol 26 (1) ◽  
pp. 1-5 ◽  
Author(s):  
MM Rahman ◽  
T Sultana ◽  
MM Uddin ◽  
M Shahjahan
Keyword(s):  
Relative Humidity ◽  
Field Condition ◽  
Natural Variation ◽  
Negative Relationship ◽  
Fruit Fly ◽  
Bitter Gourd ◽  
Effect Of Temperature ◽  
Positive Role ◽  
Field Laboratory ◽  
Positive Effect

The research was carried out in the field laboratory of the Department of Entomology, Bangladesh Agricultural University during April to July 2013 to correlate the temperature, relative humidity and number of fruits with the level of fruit infestations by cucurbit fruit fly, Bactrocerea cucubitae. Three cucurbitaceous vegetables namely bitter gourd (BARI Karola-1), ridge gourd (BARI Jhinga-1), and snake gourd (Local Chichinga) were taken as host crops. Percent fruit infestations were compared with the natural variation of temperature, relative humidity and number of fruits under field condition. Fruit infestations varied significantly with the variation of temperature, relative humidity and total number of fruits among three selected vegetables. Increasing of temperature had profound positive role in bitter gourd fruit infestation whereas negative relationship was found for ridge gourd infestation. However, statistically insignificant but positive effect of temperature was observed in snake gourd infestation. Fruit infestation of ridge gourd and snake gourd increased with the increase of relative humidity while negative relationship was observed in case of bitter gourd. Percent fruit infestations by cucurbit fruit fly were also found to be affected by total number of fruits. Positive but weak relationships were found between percent fruit infestations and total number of fruits of all three vegetables used in the experiments.Progressive Agriculture 26:1-5, 2015

scholarly journals Seasonal Abundance and Infestation of Fruit Fly on Cucumber

2021 ◽  
Vol 18 (2) ◽  
pp. 233-241
Author(s):  
S Nahid ◽  
MR Amin ◽  
MM Haque ◽  
SJ Suh
Keyword(s):  
Relative Humidity ◽  
Light Intensity ◽  
Meteorological Factors ◽  
Fruit Fly ◽  
Methyl Eugenol ◽  
Seasonal Abundance ◽  
Bactrocera Cucurbitae ◽  
Larval Population ◽  
Weather Parameters ◽  
Positive Light

Population dynamics and infestation of fruit fly, Bactrocera cucurbitae Coquillett (Diptera: Tephritidae) was monitored on cucumber, Cucumis sativus using methyl eugenol trap during summer and autumn in 2017 at Gazipur, Bangladesh. Relationship between the abundance of fruit fly and meteorological factors was also studied. The fruit fly showed significantly higher abundance in summer compared to autumn. The larval population per fruit was found higher in summer (24.9 fruit-1) than that in autumn (1.5 fruit-1). The daily mean temperature had significant positive, light intensity had insignificant positive, relative humidity had insignificant negative and rainfall had insignificant negative correlation with fruit fly abundance. The temperature, light intensity, relative humidity and rainfall individually contributed to fruit fly abundance of 14.1 %, 24.0 %, 0.8 % and 1.8 %, respectively. The combined effect of the weather parameters on fruit fly abundance was 40.7 % and the equations were insignificant. The fruit fly showed significantly lower level of infestation in methyl eugenol treated plots as compared to controls in both summer and autumn. SAARC J. Agri., 18(2): 233-241 (2020)

A low cost bisexual food baited trap for Bactrocera cucurbitae (Coquillet) (Tephritidae: Diptera) in gourds

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 287-290
Author(s):  
Kishor Pujar ◽  
T. Elaiyabharathi ◽  
T. Kempraj ◽  
C. Kavitha
Keyword(s):  
Field Experiments ◽  
Low Cost ◽  
Fruit Fly ◽  
Fruit Flies ◽  
Bitter Gourd ◽  
Bactrocera Cucurbitae ◽  
Food Grade ◽  
Male Ratio ◽  
The Cost ◽  
Luffa Acutangula

A low cost fruit fly trap was designed to attract the fruit flies with food baits. The preliminary field experiments were conducted for selecting the food bait and its concentration. A combination of 30 g of banana pulp + 3 ml of food grade alcohol selected and tested in gourds namely snake gourd (Trichosanthes anguina L.), ridge gourd (Luffa acutangula L.) and bitter gourd (Momordica charantia L.) in Coimbatore and Dharmapuri. The food bait attracted both sexes of B. cucurbitae with female: male ratio 0.78:1 and the cost of trap and food bait costs only 43 rupees per acre.

scholarly journals Seasonal abundance of major sucking and chewing insects of guava

2019 ◽  
Vol 47 (1) ◽  
pp. 97-105
Author(s):  
Md Ruhul Amin ◽  
Shubhati Khisa ◽  
Habibur Rahman ◽  
Rayhanur Jannat ◽  
Muhammad Badruzzaman
Keyword(s):  
Relative Humidity ◽  
Fruit Fly ◽  
Scale Insect ◽  
Psidium Guajava ◽  
Scale Insects ◽  
Seasonal Abundance ◽  
Effect Of Temperature ◽  
Chewing Insects ◽  
Mealy Bug ◽  
Peak Abundance

Seasonal abundances of the sucking insects, namely mealy bug, white fly and scale insects, and chewing insect viz., fruit fly was monitored during September, 2016 to June, 2017 in a guava Psidium guajava orchard. Sucking insect was monitored by weekly observation on the leaves and chewing insect was captured using methyl eugenol trap. The mealy bug, white fly and scale insects were abundant during 4th week of November to 4th week of January and they showed fluctuations in their population. The mealy bug, white fly and scale insects had peak abundance in the 1st week of January, 4th week of November and 1st week of December, respectively. The scale insect revealed significantly higher abundance compared to other sucking insects. Two species of fruit fly, namely Bactrocera tryoni and B. dorsalis were found in the guava orchard and B. tryoni showed significantly higher abundance compared to B. dorsalis both in winter and summer seasons. In winter, B. tryoni reached the peak abundance in the 2nd week of January and their peak abundance in summer occurred in the 1st week of May. The daily mean temperature and relative humidity influenced the abundance of the sucking and chewing insects. Temperature individually contributed 30.0, 59.6, 59.3% abundance and temperature with relative humidity had 34.8, 60.9 and 73.5% abundance on mealy bug, white fly and scale insect, respectively. The effect of temperature on the abundance of fruit fly in winter and summer were 42.6 and 50.3%, respectively and the combined effect of temperature with relative humidity were 68.7% in winter and 61.9% in summer. Bangladesh J. Zool. 47(1): 97-105, 2019

scholarly journals Biochemical Resistance Traits of Bitter Gourd against Fruit Fly Bactrocera cucurbitae (Coquillett) Infestation

2017 ◽  
Vol 9 (2) ◽  
pp. 217
Author(s):  
Paras Nath ◽  
A. K. Pandey ◽  
Akilesh Kumar ◽  
A. B. Rai ◽  
Hemalatha Palanivel
Keyword(s):  
Negative Correlation ◽  
Reducing Sugars ◽  
Larval Density ◽  
Fruit Fly ◽  
Significant Negative Correlation ◽  
Ash Content ◽  
Bitter Gourd ◽  
Bactrocera Cucurbitae ◽  
Total Sugars ◽  
Fruit Damage

Host plant resistance is a key factor for management of the melon fruit fly, Bactrocera cucurbitae (Coquillett), due to difficulties associated with its chemical and biological control. Various biochemical traits including total sugars, reducing sugars, non-reducing sugars, silica, protein content, ash content, other elements and phenols, and moisture content of fruit were studied on 74 varieties/genotypes of bitter gourd (Momordica charantia L.), in relation to resistance against B. cucurbitae under field conditions. Seventy-four genotypes of bitter gourd were screened against fruit fly infestation. The correlation coefficients revealed that the larval density and bitter gourd fruit damage (%) had significant positive relationship (r = 0.99). The moisture content had significant positive effect on the fruit damage (r = 0.75) and number of larvae per fruit (0.80). Significant differences were found in tested varieties/genotypes for fruit infestation and larval density per fruit. The nitrogen, phosphorous, potassium and protein content (r = -0.87, -0.90) showed significant negative correlation with fruit fly infestation. The non-reducing, reducing, total sugars, total phenols, silica and ash content had significant impact on the fruit damage and showed significant negative correlation with fruit fly infestation. The ascorbic acid also had significant impact on the fruit damage and showed significant negative correlation with fruit fly infestation (r = -0.79), the chlorophyll ‘a’, ‘b’ and total chlorophyll content had non-significant negative effect on the fruit damage and number of larvae per fruit.

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