A Study to Assess the Role of Some Cultural Practices in Controlling the Noxious Pest, Mediterranean, Fruit Fly Ceratitis capitata (Weid)

الموضوعات

زراعة

الملخص

A one year survey was carried out at two fields; Shambat and Elgeili to show the seasonal abundance of the Mediterranean fruit fly Ceratitis capitata (Weid.) on guava fruits, and adult emergence of the flies. A comparison between medfly infestation on orange and guava fruits was also investigated. The most susceptible fruiting stage of maturity to flies infestation was studied. In the laboratory a comparison between rearing the medfly stages inside orange and guava fruits, was carried out, also the effect of fermented fruits on the medfly larvae development. A study on the depth of pupation that constrain the medfly adult emergence, the effect of temperature, sunlight and heat, and water flooding on the medfly pupae was also investigated.This study revealed that the population abundance of the flies has two peaks, in autumn (August and September) and winter (January and February), and the lowest infestation was in the summer (May and June). The emergence of the adult was found to be regular all the year round, but the lower emergence percentages were in the summer. Infestation on guava fruits was found to be very high compared with that on orange fruits. Eggs and larvae of medfly development on guava took a shorter duration (2.24±0.31) and (4.0±0.74) days in average. A higher survival percentage (80.2%) and (77.17%,) was also noticed, compared to these developed on orange fruits (3.56±0.5) and (20.0±0.93) days duration for eggs and larvae, the survival percentages were (72.3%) and (64.1 %), respectively.Within the fruiting stages of maturity the ripe stage was found to be highly infested and was the most susceptible stage for flies infestation, followed by the mature and the immature stages. Fermentation of the fruits was found to enhance the development of the medfly larvae which took (3.05±0.7) days duration and (66.7%) survival percentage, while (3.7±1.78) and (8.0±1.3) days duration in gradually fermented and fresh fruits respectively. Chemical analysis of fresh and fermented guava resulted in high sugar content in the fresh fruits (4.06%) fructose, 2.52% glucose and 3.1% sucrose while they were all absent in the fermented fruits. However, (3.0%) ethanol was found in the fermented fruits. The most effective depth that constrained the medflies adults emergence was found to be more than 7.5 cm for all types of soil. When the medfly pupae were exposed to series of temperatures, the adults emergence was found to decrease with increase of temperature and 47°C gave zero emergence. The exposure of medfly pupae to direct sunlight and heat showed that the death of the pupae increased with increase in period of exposure, and the mortality rate was found to decrease with the increase of pupal age in the same period of exposure. The water flooding in the different types of soil was found to affect the medfly adult emergence, when hours of flooding were increased and it varied according to the soil type. Six hours exposure resulted in a significant reduction value of 27.2% of adult emergence in the silt soil, less than six hours in the clay soil and more than six hours in the mixed soil whereas more than 12 hours was needed in the sand soil to give the same effect. Flooding for 24 hr reduced the adult emergence percentage to less than 10% in all types of soil but 13.1 % in the sand soil.

روابط وملفات

التعريف والنوع

رقم الوثيقة

ef8ea780-893a-4c59-87c2-9ac144fe6aa6

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1620860_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"Amani Mohamed Khair Abbass","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"El Tigani El Tahir Ali","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

A Study to Assess the Role of Some Cultural Practices in Controlling the Noxious Pest, Mediterranean, Fruit Fly Ceratitis capitata (Weid)

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

El Tigani El Tahir Ali

الإعداد

Amani Mohamed Khair Abbass

الاقتباسات الببليوغرافية