The Peach fruit fly, Bactrocera zonata (sunders) is known as the most serious fruit insect pest, this work carried out to test the toxicity of ten essential oils against one day old pupa of this pest by using 4 concentrations for each oil. Results revealed that eucalyptus oils was the most toxicity oil against B. zonata pupa with low LC 50 value of 38.88ml/L followed by Basil oils followed by Onion, peppermint, ginger, garlic, water crass, clove, castor and
The Peach fruit fly (PFF), Bac t r oc e ra z o nat a (Saunders) is known as a key pest of fruits in Egypt. The effect of temperature on the development and survival of the Peach fruit fly (PFF), B a ct ro c er a z onat a (Saunders) (Diptera: Tephritidae) from egg to adult was studied to understand the geographical pattern of occurrence of these fruit fly. Studding carried out in laboratory under four different constant temperatures: 15, 20, 25 and 30°C. Results showed that time required for development were decreased as the temperature increased from 15 to 30°C. Differences between the four tested temperatures in incubation periods were significant. Developmental time of the eggs significantly decreased over the range of 15 to 25°C but not between 25 and 30°C, Similarly, developmental time for the larva and pupa significantly decreased with increasing temperature from 15 to 30°C. The lower threshold of development (t o) for the larval and pupae stages was 13 and 10.9°C respectively. The highest pupation rate of B. zonata was 87±.48 percentage at 25°C, which was considered the optimum and favorable temperature. The results will be good tool for predicting the fly's population dynamics, which would help develop the fly management strategies.
The study was conducted in the southern eastern coast of Egypt of the Red Sea region to identify some types of bees that are likely to be present in this coastal region. The work was carried out through surveys that covered an area the longest of which is about 20 km and a width of 2.5 km. The results of the morphological definition showed the presence of dwarf bees in the Safaga area and the buildings were more Places where colonies of dwarf bees were found. The number of colonies recorded an average of 5 colonies / km2. The most widespread plants were Sidr. The results also showed the continuous movement of colonies.
Survey was conducted in the three different cardamom zones, viz., Vandanmedu (Zone A), Myladumpara (Zone B), and Santhanpara (Zone C) to study the incidence of natural parasitoids of Conogethes sp., on cardamom plant parts viz., shoot, panicle and capsule in Cardamom Hill Reserve (CHR), Idukki district, Kerala. under Pesticide Applied Cardamom Field (PACF) and Pesticide Non Applied Cardamom Field (PNACF) and compared. Two natural parasitoids viz., larval parasitoid, Apanteles taragamae Vierick (Hymenoptera: Braconidae) and larval-pupal parasitoid, Agrypon sp. (Hymenoptera: Ichneumonidae) only were recorded. Apanteles taragamae parasitism was high on the Conogethes population found on capsules (1.01 to 16.79%) than shoots (0.13 to 0.54%) and panicles (0.03%) and also noticed first time in shoots and panicles. Agrypon sp. was high on the Conogethes population found on shoots only (5.46 to 9.63%) and this species not parasitized on Conogethes in panicles and capsules. It is suggested that this well known species of local strain be further evaluated for potential use in mass rearing and augmentative release of this parasitoid for managing Conogethes in cardamom ecosystem.
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