Bio control Assignment ( Corcyra cephalonica).pptx

Mass Production of Corcyra cephalonica

1. ENT 505: Biological control Insect Pest and Weeds Submitted to Dr. N.B. Patel Associate Professor Department of Entomology B. A. College of Agriculture AAU, Anand 388110 Presented by Ghoda Lalit A. Reg.no: 2010124011 M.Sc. (Agri.) 1 st Sem B. A. College of Agriculture AAU, Anand 388110 Mass Production of  Corcyra cephalonica Assignment on

2. Corcyra cephalonica , commonly known as the rice meal moth or rice moth , is a significant pest of stored foods such as cereals, cereal products, oilseeds, pulses, dried fruits, nuts, and spices. This pest is known to infest a wide range of stored agricultural commodities, causing considerable losses to both food quality and quantity. Due to its wide distribution and economic impact, C. cephalonica has been extensively studied and is often used as a model organism in pest management research. Corcyra cephalonica also plays a vital role in biological control programs. Many natural enemies that are mass-bred in laboratories for pest control in the field rely on the egg or larval stages of C. cephalonica . Corcyra cephalonica serves not only as a pest but also as an essential resource for sustainable pest control practices. Corcyra cephalonica Introduction : 1

3. Morphology : The eggs are oval (0.5 x 0.3 mm) with a sculptured surface and a nipple-like process at one end . The larvae are creamish -white, with brown head and prothoracic segments, and have prolegs on segments 3-6 and 10. Fully grown larvae reach 15 mm and spin a tough double-layered cocoon , in which it develops into a dark-brown pupa. The adults are small, with pale-buff hind wings and brown-grey forewings . Males are smalle r than females. 2

4. Egg Pupa Larvae 3 Adualt ( Corcyra cephalonica )

5. Sexual activity begins soon after adult emergence, with a 2-day pre- oviposition period. Eggs are laid at night and hatch in 2-3 days. Larvae develop best at 30-32.5°C and 70% RH , with a cycle from egg to adult in 26-27 days. Males usually have 7 instars , and females have 8 Last-instar larvae and adults emerge through a weak spot in the cocoon. The sex ratio is 1:1, and adults are nocturnal , most active at night . Biology :   Life Cycle of Corcyra Cephalonica 4

6. Mass production of  Corcyra cephalonica Materials : Mask Wooden Cage Grain Powder Yeast Powder Corcyra egg laying cage Honey Hot Air Oven Moth aspirator 5

7. Preparation of egg laying cage of Corcyra cepholonica : Take a plastic bucket with lid . Make a hole on the centre of upper portion of the lid to make provision for hanging of feed composing 50% honey solution soaked in cotton . Cut the bottom portion of the bucket in circular shape leaving space for fixing of wire mesh in feasibility for egg laying. Keep the bucket placed over a mesh sieve for egg laying purposes. Corcyra egg laying cage 6

8. Steps for production of Corcyra cephalonica : Sterilize the wooden boxes in hot air oven at 100 degree Centigrade for 1-2 hours. sterilized crushed Maize/Sorghum/Rice of 2.5 kg per box. Add 50 grams of broken ground nut, 5 grams of yeast, 1 gram of wettable sulphur , 0.05 gms of streptomycin sulphate in each box Sprinkle 1 cubic centimetre of Corcyra eggs per box on the top of culture medium and mix up the medium thoroughly 9

9. Cover the box with lid and label the date of inoculation . Favourable temperature for rearing is 30-32 degree centigrade and Relative humidity, 70% The moth starts emerging within 45-50 days , collect the moths inside the net by glass tubes and transfer the moths to egg laying chamber. Provide cotton soaked honey solution as adult food in the egg laying chamber. Collect the eggs daily 10

10. T hreats in Corcyra production : T emperature and Humidity Fluctuations : Corcyra is sensitive to temperature and humidity; high heat or low humidity can cause more deaths, while high humidity can lead to mold growth that harms the larvae . Contamination : Dust , poor ventilation, or too much moisture in the rearing area can cause contamination, leading to bacteria or mold growth that harms the larvae . Fungal diseases, such as Beauveria bassiana , can impact Corcyra larvae, reducing survival rates and affecting overall productivity Grain or substrate used for rearing larvae is contaminated with chemicals or pesticides, it can have harmful effects on the larvae. 11

11. Treatment 1T ( Rice 1000 g) T2 (Wheat 1000 g) T3 (Sorghum 1000 g) T4 (Rice 1000 g + ground nut 50 g) T5 (Wheat 1000 g + ground nut 50g) T6 (Sorghum 1000 g + ground nut 50 g) T7 rice + sesamum T8 (Wheat 1000 g + sesame 50 g) T9 (Sorghum 1000 g + sesame 50 g) Table 1: Effect of different diets on the biology of rice moth, Corcyra cephalonica . Arun Kumar KM. et.al .,2018 Nagpur (Maharashtra ) 12

12. Table 2 : Biological parameters of Corcyra cephalonica in the mass rearing system during different seasons {0.5 cc Corcyra eggs ((8000 eggs) as inoculums per box } Y. Lalitha et.al ., 2015 Bangalore (Karnataka) 13

13. Table 3: Influence of temperature and relative humidity on fecundity and developmental period of C. cephalonica WADASKAR et.al .,2015 Junagadh (Gujarat) 14

14. Arun Kumar, K. M., Tambe , V. J., Rehaman , S. K., Choudhuri , B. N., & Thakur, K. D. (2018). Effect of different diets on the biology of rice moth, Corcyra cephalonica ( Stainton ).  Journal of Entomology and Zoology Studies ,  6 (3), 251-254 . Lalitha , Y., & Ballal , C. R. (2015). Influence of seasons and inoculum dosages on the production efficiency of Corcyra cephalonica Stainton . Wadaskar , P. S., Jethva , D. M., Vigneswaran , S., & Rode, N. S. (2015). Studies on effect of temperature and relative humidity on biology of rice moth Corcyra cephalonica ( Stainton ) under laboratory condition.  The Ecoscan ,  9 (1&2), 201-204. References 15