Comparative studies on the biology and filarial susceptibility of selected blood-feeding and autogenous Aedes togoi sub-colonies.
Blood-feeding and autogenous sub-colonies were selected from a laboratory, stock colony of Aedes togoi, which was originally collected from Koh Nom Sao, Chanthaburi province, Southeast Thailand. Comparative biology and filarial susceptibility between the two sub-colonies (blood-feeding: F11, F13; autogeny: F38, F40) were investigated to evaluate their viability and vectorial capacity. The results of comparison on biology revealed intraspecific differences, i.e., the average egg deposition/gravid female (F11/F38; F13/F40), embryonation rate (F13/F40), hatchability rate (F11/F38; F13/F40), egg width (F11/F38), wing length of females (F13/F40), and wing length and width of males (F11/F38) in the blood-feeding sub-colony were significantly greater than that in the autogenous sub-colony; and egg length (F11/F38) and width (F13/F40), and mean longevity of adult females (F11/F38) and males (F13/F40) in the blood-feeding sub-colony were significantly less than that in the autogenous sub-colony. The results of comparison on filarial susceptibility demonstrated that both sub-colonies yielded similar susceptibilities to Brugia malayi [blood-feeding/autogeny = 56.7% (F11)/53.3%(F38), 60%(F13)/83.3%(F40)] and Dirofilaria immitis [blood-feeding/autogeny = 85.7%(F11)/75%(F38), 45%(F13)/29.4%(F40)], suggesting autogenous Ae. togoi sub-colony was an efficient laboratory vector in study of filariasis.
Junkum
Anuluck
A
Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Choochote
Wej
W
Jitpakdi
Atchariya
A
Leemingsawat
Somjai
S
Komalamisra
Narumon
N
Jariyapan
Narissara
N
Boonyatakorn
Chavalit
C
D000330:Aedes / Q000033:anatomy & histology / Q000469:parasitology* / Q000502:physiology; D000818:Animals; D017178:Brugia malayi / Q000502:physiology*; D006224:Cricetinae; D004183:Dirofilaria immitis / Q000502:physiology*; D005247:Feeding Behavior; D005260:Female; D006790:Host-Parasite Interactions; D007303:Insect Vectors / Q000033:anatomy & histology / Q000469:parasitology* / Q000502:physiology; D008136:Longevity; D008297:Male; D010058:Oviposition