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Table 2 Effects of different experimental parameters on the engorgement and fecundity of artificially fed Dermacentor reticulatus females

From: Optimization of an artificial tick feeding assay for Dermacentor reticulatus

Experiment

Experimental group

Engorgement rate (%)

Mean engorgement mass ± SD (mg)

Females producing fertile eggs (%)

Mean egg batch mass ± SD (mg)

I

Defrosted blood

37.8 (45/119)

198.3 ± 63.7

71.1 (32/45)

95.0 ± 37.7

 

Fresh blood

49.6 (59/119)

221.9 ± 63.2

71.2 (42/59)

98.3 ± 38.9

II

Untreated blood

32.0 (47/147)

222.9 ± 78.1

53.2 (25/47)a

74.4 ± 53.3c

 

Irradiated blood

34.0 (50/147)

193.7 ± 64.4

56.0 (28/50)b

40.4 ± 29.3cd

 

Gentamycin-treated blood

29.3 (43/147)

215.6 ± 78.3

79.1 (34/43)ab

94.2 ± 41.8d

III

Ambient CO2

17.0 (31/182)

220.3 ± 101.3e

32.3 (10/31)f

107 ± 60.1g

 

5% CO2

25.3 (46/182)

303.9 ± 105.1e

82.6 (38/46)f

178.8 ± 86.7g

IV

2 g/l Glucose, 2.5% CO2

31.2 (24/77)

259.5 ± 71.9

87.5 (21/24)

99.8 ± 38.9

 

4 g/l Glucose, 2.5% CO2

42.9 (33/77)

287.5 ± 68.8

87.9 (29/33)

121.3 ± 70.4

 

Ticks fed on rabbits

64 (64/100)

266.3 ± 71.4

100 (64/64)

123.9 ± 54.3

  1. Abbreviation: SD standard deviation
  2. aSignificant difference (Fisher’s exact test, P = 0.014)
  3. bSignificant difference (Fisher’s exact test (P = 0.027)
  4. cSignificant difference (ANOVA, F(2,102) = 13.60, P < 0.001; Bonferroni post-hoc test, P = 0.005)
  5. dSignificant difference (ANOVA, F(2,102) = 13.60, P < 0.001; Bonferroni post-hoc test, P < 0.001)
  6. eSignificant difference (Welch test, P = 0.001)
  7. fSignificant difference (Fisher’s exact test, P < 0.0001)
  8. gSignificant difference (Welch test, P = 0.0001)