Chilo tumidicostalis

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The duration of each successive larval instars with six molting were 3.83 ± 0.71, 5.03±0.89, 4.90±0.96, 7.13±1.57, 7.33±1.47 and 7.93±2.02 days respectively. The duration from the first to sixth instars averaged 33.43±4.46 days, ranging from 28 to 42 days. The prepupal stage took about 1.70±0.47 days, ranging from 1 to 2 days. The duration of pupal stage was 7.03±1.19 days, ranging from 6 to 9 days. The longevity of male and female adults were 3.90±0.88 days, ranging from 2 to 5 days and 4.03±0.76 days, ranging from 3 to 5 days respectively. The total life cycle of C. tumidicostalis with six larval instars was 54.47±4.55 days, ranging from 49 to 64 days. The duration of each successive larval instars with seven molting were 3.90± 0.31, 5.07±0.64, 5.03±0.81, 7.23±1.36, 7.57±1.63, 8.40±1.04 and 7.77±1.72 days respectively. The duration from the first to seventh instars averaged 37.30±2.76 days, ranging from 36 to 42 days. The prepupal stage took about 1.8±0.41 days, ranging from 1 to 2 days. The duration of pupal stage was 7.27±1.34 days, ranging from 5 to 9 days. The longevity of male and female adults were 3.67±0.84 days, ranging from 2 to 4 days and 3.50±0.90 days, ranging from 2 to 5 days respectively. The total life cycle of C. tumidicostalis with seven larval instars was 58.13±3.00 days, ranging from 54 to 63 days. The data on the duration of development stage of C. tumidicostalis with five-, six- and seven-instars larvae were presented in Table 5, 6 and 7. 28
Table 5 Duration of various developmental stages of Chilo tumidicostalis (Hampson) with five instars larvae under laboratory condition (28 ± 2 0 C and 75 ± 2 % RH) Stage of development N Mean±S.D. Range (days) (days) Egg: 267 4.33±0.48 4-5 Larva: Instar I 35 3.43±0.50 3-4 Instar II 35 3.87±0.89 3-5 Instar III 35 4.67±1.15 3-6 Instar IV 35 6.87±1.47 4-9 Instar V 35 6.40±1.45 3-8 Total: first to last instar 35 24.67±4.07 19-29 Prepupa: 35 1.77±0.43 1-2 Pupa: 35 7.23±1.52 5-9 Adult: Male 18 3.97±0.76 3-5 Female 15 3.90±0.84 3-5 29
Page 2: THESIS ECOLOGICAL STUDY OF THE SUGA
Page 5 and 6: TABLE OF CONTENTS TABLE OF CONTENTS
Page 7 and 8: (Hampson) with six larval instars
Page 9 and 10: LIST OF FIGURES (Continued) Figure
Page 11 and 12: ECOLOGICAL STUDY OF THE SUGARCANE M
Page 13 and 14: stated that the relative importance
Page 15 and 16: epeated mating habits, males mated
Page 17 and 18: MATERIALS AND METHODS Laboratory st
Page 19 and 20: the capsule of each larval instars
Page 21 and 22: Biological Studies of The Important
Page 23 and 24: RAINFALL (mm) RELATIVE HUMIDITY (%)
Page 25 and 26: Figure 3 Eggs mass of Chilo tumidic
Page 27 and 28: Table 1 Width of head capsule of Ch
Page 29 and 30: Table 3 Width of head capsule of Ch
Page 31 and 32: WIDTH OF HEAD CAPSULES (mm) 2.5 2 1
Page 33 and 34: WIDTH OF HEAD CAPSULES (mm) 3 2.5 2
Page 35 and 36: A B Figure 9 Pupae of Chilo tumidic
Page 37: Table 4 Body measurements of variou
Page 41 and 42: Table 7 Duration of various develop
Page 43 and 44: Table 8 Biological life table, age-
Page 45 and 46: lxmx 20 15 10 5 0 33 36 39 42 45 48
Page 47 and 48: Table 10 Partial ecological life ta
Page 49 and 50: Survey Natural Enemies of Chilo tum
Page 51 and 52: Figure 14 The full grown larvae of
Page 53 and 54: Figure 15 Pupa of Cotesia flavipes
Page 55 and 56: Figure 17 Female adult of Cotesia f
Page 57 and 58: Duration of developmental periods T
Page 59 and 60: Figure 19 The female adult of Cotes
Page 61 and 62: Figure 20 Larvae of Tetrastichus sp
Page 63 and 64: Figure 22 The pupae of Tetrastichus
Page 65 and 66: Figure 24 Male adult of Tetrastichu
Page 67 and 68: Duration of developmental periods T
Page 69 and 70: Figure 26 The female of Tetrastichu
Page 71 and 72: Population Study of Chilo tumidicos
Page 73 and 74: POPULATION DENSITY (LOG N+1) 4.5 4
Page 75 and 76: PERCENT PARASITIZATION 50 45 40 35
Page 77 and 78: parasites; Telenomus sp. (Hymenopte
Page 79 and 80: and in control plot were 0, 0, 5.25
Page 81 and 82: Cantelo, W.W. and P. Pholboon. 1965
Page 83 and 84: Morris,R.F. and C.A. Miller. 1954.
Page 85: _____. 1999. Success of Cotesia fla

Chilo tumidicostalis

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