Biology Reference
In-Depth Information
Table 2.7
Life Cycle of H. wellingtoni Under Laboratory Conditions
Stage
Phase
Duration (in days)
No. of Observations
Female
a
Parasitic
5
15 (mean 10.75)
20 specimens
4
7 (mean 4.8)
Pre-oviposition
20 specimens
13
24 (mean 17.7)
Oviposition
20 specimens
1
19 (mean 4.85)
Post-oviposition
20 specimens
Egg
Incubation
26
35 (mean 29.8)
20 broods
Larva
a
Quiescent
5
7
20 broods
Life span (maximum)
118
2 vials of 2500 larvae each
Parasitic
2
6
4 broods
Molting
16
20
4 broods
Nymph
a
Quiescent
3
5
Many
Life span (maximum)
146
4 batches, 100 each
Parasitic
3
7
11 batches, 200 each
Molting
24
31
7 batches, 25 each
Adult
Quiescent
10
15
Many
Life span (maximum)
308
5 batches, 50 each
a
Fed on chicks.
Disease Relationship
12,13,23,116,134
As many as 20 KFD virus isolations have been recorded from this species, out of
which 17 have been recorded from nymphs during the period of 1961
1972, the
remaining isolations being from adults and from larval stages.
Bhat and Naik (1978) have reported that this species can transmit the KFD virus
under laboratory conditions.
Two more viruses, i.e., Ganjam and Kaisodi viruses, have been isolated from
H. wellingtoni ticks.
2.7.12 Haemaphysalis intermedia
Nuttall and Warburton first described this species in 1909 and since then it has
remained in a long taxonomic confusion. Hoogstraal and Trapido cleared up the
confusion in 1963 by redescribing all the stages of Haemaphysalis intermedia
(
Figure 2.88
).
Male (
Figures 2.89 and 2.90
)
57,127
It is an exceptionally small haemaphysalid; body length measures approximately
1.25 mm, width approximately 0.6 mm.
Capitulum: Basis capitulum is rectangular; length is two-thirds as long as width;
cornua are moderately large, sharply tapered, two-thirds as long as the base of basis
capitulum; surface is with a few small punctations. Palpi of conical type are lacking
basolateral salience. Hypostome is small, not reaching apex of palpi, lateral mar-
gins convex; dental formula is 4/4 in files of approximately seven denticles.
