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Table 5 Consumption and duration (/days) of three predatory larval stages in relation to prey energy reserve

From: Energy reserves in Brevicoryne brassicae (Lin.) (Homoptera: Aphididae) instars and their effect on predation and longevity of three coccinellid species under laboratory conditions

B. brassicae instars

Total energy, cal/mg

Total larval instars

C. septempunctata

C. undecimpunctata

S. interruptus

Duration

Prey*

Duration

Prey*

Duration

Prey*

1st

0.248161 a

23.83 a

89.42 a

21.17 ab

81.83 a

17.17 a

69.25 a

2nd

0.340355 b

24.33 a

78.33 b

21.50 a

73.83 b

16.33 ab

63.92 a

3rd

0.393617 c

21.00 b

67.42 c

20.83 ab

68.18 b

15.33 b

57.92 b

4th

0.430161 d

23.33 a

63.17c

20.17 bc

59.25 c

16.67 a

51.25 c

Adult

0.463839 d

23.83 a

60.00 d

19.50 c

54.58 c

17.50 a

51.75 c

Instar LSD 5%

 

1.32

5.89

1.32

6.32

1.22

5.93

Regression Equation

No. of consumed prey = − 42.07 + 5.76*

No. of Consumed prey = − 40.19 + 4.09*

No. of consumed prey = − 30.30 + 5.98*

r

0.97

0.29

0.98

R2

0.93

0.081

0.96

  1. *Prey = number of consumed prey