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Research Article

Table 1.

Measurements of infective larvae of Cercopithifilaria spp. recovered from hard ticks collected from the Japanese serow, Capricornis crispus.

Specimen no. 1 2 3 4 5 6 7 8 9 10 11
Body length 1,370 1,280 1,120 1,307 1,250 1,340 970 940 1,270 1,190 1,091
Body width (maximum) 21 18 20 24 21 19 22 20 15 18 18
Nerve ring from head 76 77 72 82 65 73 78 60 75 72 86
Excretory pore from head 120 124 110 136 ND 104 110 ND 105 108 ND
Oesophagus length 375 380 292 267 350 330 284 272 330 267 333
Oesophagus/body length (%) 27.4 29.7 26.1 20.4 28.0 24.6 29.3 28.9 26.0 22.4 30.5
Muscular oesophagus length 122 181 138 155 100 150 132 90 138 140 151
Tail length 56 50 69 52 52 57 60 75 75 57 52
Tail/body length (%) 4.1 3.9 6.2 4.0 4.2 4.3 6.2 8.0 5.9 4.8 4.8
Width at anus 15 15 16 15 15 18 16 18 14 14 15
Tail length/width at anus 3.7 3.3 4.3 3.5 3.5 3.2 3.8 4.2 5.4 4.1 3.5
Genital primordium from head 276* 207* 408** ND ND ND ND ND ND 190* ND
Type of tail tip A A A A B C C D D E E
Tick species H. flava** H. flava** H. flava** H. japonica* H. flava** H. flava** H. flava** H. flava* H. japonica*** H. flava** H. flava*
Incubation period (days) 42 42 42 47 42 42 74 52 54 73 52
Tick ID no. Y23 Y23 Y23 Y15 Y23 Y23 Y21 Y16 Y18 Y20 Y16
Serow ID no. YA1 YA1 YA1 YA27 YA1 YA1 YA2 YA5 YA26 YA2 YA5

*Female, **male, ***nymph, ND: not determined, H: Haemaphysalis. All measurements in micrometres.

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