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Table 3 Parameters of parasitic phase in Dermacentor reticulatus females infesting the rabbit host, after application of permethrin solutions on unfed females at temperature 20 ± 3 °C and 50 ± 3° % RH

From: The effect of synthetic pyrethroids on the attachment and host-feeding behaviour in Dermacentor reticulatus females (Ixodida: Amblyommidae)

Parameter

Statistics

Concentration of the solution (%)

Control

H Test

0.0156

0.0312

0.0625

0.1250

Feeding period (days)

Min

12

7

9

9

6

6.2085

Max

17

17

13

13

16

M

14

12

10

11

9

SD

2.9

4.1

2.3

2.8

3,4

p = 0.1841

U Test

10.0

24.0

18.5

11.5

x

p

0.0605

0.1821

0.2564

0.2999

x

Female engorged weight (g)

Min

0.1719

0.1294

0.1639

0.1294

0,1468

9.0366

Max

0.2772

0.3469

0.3185

0.3112

0,4637

M

0.2346

0.2473

0.2380

0.2203

0,3329

SD

0.0554

0.0898

0.0775

0.1286

0,0811

p = 0.0602

U Test

9.0

18.0

11.0

8.0

x

p

0.0495

0.0752

0.0735

0.1560

x

Feeding efficiency index *(g/24 h)

Min

0.0143

0.0108

0.0126

0.0100

0,0092

9.3192

Max

0.0212

0.0496

0.0354

0.0346

0,0740

M

0.0173

0.0243

0.0246

0.0223

0,0421

SD

0.0035

0.0175

0.0114

0.0174

0,0181

p = 0.0536

U Test

7.0

20.0

12.0

7.0

x

p

0.0324

0.1029

0.0887

0.1266

x

  1. *average increase in body mass (in g) per 24 h, M – mean; SD – standard deviation, at permethrin concentrations 0.25 % i 0.5 % no D. reticulatus female was able to complete feeding