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Table 2 PLS cross-validation, % accuracy of species predictions using NIRS on preserved and fresh An. gambiae s.s. and An. Arabiensis samples

From: Evaluating preservation methods for identifying Anopheles gambiae s.s. and Anopheles arabiensis complex mosquitoes species using near infra-red spectroscopy

Storage duration (weeks)

Fresh

4°C

−20°C

Desiccated in silica gel

RNA later ® room temp.

RNA later ® at 4°C

RNA later ® at −20°C

An. arabiensis

       

0

91.8

.

.

.

.

.

.

1

 

96.3

94.8

94.8

82.8

87.4

87.8

4

 

83.3

91.1

88.9

78.5

85.1

83.1

10

 

90.8

69.6

80.7

68.7

70.6

72.9

32

 

83.7

83.7

80.7

72.2

80.0

71.1

50

 

**

92.6

90.4

84.4

88.9

93.3

An. gambiae

       

0

91.0

.

.

.

.

.

.

1

 

97.3

98.5

85.2

90.2

94.0

94.6

4

 

91.9

91.8

88.4

78.8

83.7

82.6

10

 

94.1

74.2

81.5

69.6

69.1

69.5

32

 

87.8

79.3

89.7

80.0

75.9

70.4

50

 

**

92.6

89.6

63.7

75.6

77.0

Average

91.4

90.7

86.8

87.0

76.9

81.0

80.2

  1. Caption: **Samples refrigerated at 4°C for 50 weeks were not suitable for scanning.