Lambonella stegomyiae (ciliopora : tetrahymenidae) : biologi dan potensinya sebagai agen kawalan biologi nyamuk aedes.
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Date
1993
Authors
Ahmad Arshad, Abd. Haris Hilmi
Journal Title
Journal ISSN
Volume Title
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Abstract
.The life cycle of LamborneJla stegomyiae involves the
adlfl t, larval and pupal stages of a mosquito host. 'l.'h.is
pcpr~si te has five developemental stages i.e. parasitic,
I
t~9phont, theront, cuticular cyst and desiccation resistant
•. There
: are 7 parasitic stages i.e>. penetration, postpE;!
petration1, pre-amoeboid, amoeboid, post-amoeboid, premature
trophont and mature trophont stage. The trophont is
the freE~ li yi.ng and the infective stage while the theront is
f
the host seeking stage. L. stegomyiae takes 6-9 days to
complete its life cycle.
The post-amoeboid stage is almost round, 55.75±11.27 ~m
in length and 55.25±9.52 ~m in width. The pre-mature
trcpphont stage and the mature trophont stage are oval. The
pre-mature trophont stage is 70. 75±7. 65 ~m in leng·th and
48~75±7.93 ~m in witdh, while the mature tropho~t stage is
63.87±6.20
in length and 41.00±6.20 in width.
Trophonts collected from the field.is longer than the mature
trophonts l. e. 82. 50±11. 06 ~m in length and 34. 00±5. 76 ~m in
width. The .theront is round and 39.62±3.27 ~m in diameter.
Cuticular cysts are attached on to the larva's cuticle and
measure 3:L~>O:l2.2~> ~m ln diameter and 21\.7.0J.2.!>~> J.Lill in
hetght. L. stegomyiae is dispersed through active and pasive •,
means. Acti've dispersal is done by adult female, while
I ,
pasi ve di'spersal is done by both male and female adult
mos;qui toes. ,
The pathogenicity studies in laboratory showed that,
the percentage of infection in Ae. .. albopictus and Ae.
aegypti were 99. 20±1. 79 %- and 98. 40±2. 60 % respectively,
while percentage mortality were 99. 52±1. 06 % and 90. 83±11. 70
% respectively. Statistical analysis showed no significant
difference in percentage of infection and mortality between
the species ·(p < 0. 05).
Cul,ture using four media showed that L. stegomyiae was
more suitable (higher infection) in water previously
containing mosquitoes, Bambusa sp. infusion and Acacia sp.
infusion compared to deionized water (p < 0.05).
Description
Keywords
Ciliopora : tetrahymenidae , Nyamuk aedes.