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Host attraction and biting behaviour of Anopheles mosquitoes in South Halmahera, Indonesia.

Abstract：

BACKGROUND:Indonesia is home to a variety of malaria vectors whose specific bionomic traits remain largely uncharacterized. Species-specific behaviours, such as host feeding preferences, impact the dynamics of malaria transmission and the effectiveness of vector control interventions. METHODS:To examine species-specific host attraction and feeding behaviours, a Latin square design was used to compare Anopheles mosquitoes attracted to human, cow, and goat-baited tents. Anopheles mosquitoes were collected hourly from the inside walls of each baited tent. Species were morphologically and then molecularly identified using rDNA ITS2 sequences. The head and thorax of individual specimens were analysed for Plasmodium DNA using PCR. Bloodmeals were identified using a multiplex PCR. RESULTS:A total of 1024, 137, and 74 Anopheles were collected over 12 nights in cow, goat, and human-baited tents, respectively. The species were identified as Anopheles kochi, Anopheles farauti s.s., Anopheles hackeri, Anopheles hinesorum, Anopheles indefinitus, Anopheles punctulatus, Anopheles tessellatus, Anopheles vagus, and Anopheles vanus, many of which are known to transmit human malaria. Molecular analysis of blood meals revealed a high level of feeding on multiple host species in a single night. Anopheles kochi, An. indefinitus, and An. vanus were infected with Plasmodium vivax at rates comparable to primary malaria vectors. CONCLUSIONS:The species distributions of Anopheles mosquitoes attracted to human, goat, and cow hosts were similar. Eight of nine sporozoite positive samples were captured with animal-baited traps, indicating that even predominantly zoophilic mosquitoes may be contributing to malaria transmission. Multiple host feeding and flexibility in blood feeding behaviour have important implications for malaria transmission, malaria control, and the effectiveness of intervention and monitoring methods, particularly those that target human-feeding vectors.

journal_name

Malar J

journal_title

Malaria journal

authors

St Laurent B,Burton TA,Zubaidah S,Miller HC,Asih PB,Baharuddin A,Kosasih S,Shinta,Firman S,Hawley WA,Burkot TR,Syafruddin D,Sukowati S,Collins FH,Lobo NF

doi

10.1186/s12936-017-1950-5

subject

Has Abstract

pub_date

2017-08-02 00:00:00

pages

310

issue

issn

1475-2875

pii

10.1186/s12936-017-1950-5

journal_volume

pub_type

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Host attraction and biting behaviour of Anopheles mosquitoes in South Halmahera, Indonesia.