Seasonal Abundance and Host-Feeding Patterns of Anopheline Vectors in Malaria Endemic Area of Iran

Basseri, Hamid Reza; Ahmad, Rasheed; Khakha, Mansoor Ranjbar; Pakarai, Abaas; Abdolghafar, Hassanzehi

doi:10.1155/2010/671291

Cited by 36 publications

(31 citation statements)

References 16 publications

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“…stephensi used animal sheds for resting which would help in completing its gonotrophic cycle [17]. Four of the five infected mosquitoes were collected from cattle sheds/outdoors.…”

Section: Discussionmentioning

confidence: 99%

Resting and feeding preferences of Anopheles stephensi in an urban setting, perennial for malaria

Thomas

Ravishankaran

Justin

et al. 2017

Malar J

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BackgroundThe Indian city of Chennai is endemic for malaria and the known local malaria vector is Anopheles stephensi. Plasmodium vivax is the predominant malaria parasite species, though Plasmodium falciparum is present at low levels. The urban ecotype of malaria prevails in Chennai with perennial transmission despite vector surveillance by the Urban Malaria Scheme (UMS) of the National Vector Borne Disease Control Programme (NVBDCP). Understanding the feeding and resting preferences, together with the transmission potential of adult vectors in the area is essential in effective planning and execution of improved vector control measures.MethodsA yearlong survey was carried out in cattle sheds and human dwellings to check the resting, feeding preferences and transmission potential of An. stephensi. The gonotrophic status, age structure, resting and host seeking preferences were studied. The infection rate in An. stephensi and Anopheles subpictus were analysed by circumsporozoite ELISA (CS-ELISA).ResultsAdult vectors were found more frequently and at higher densities in cattle sheds than human dwellings. The overall Human Blood Index (HBI) was 0.009 indicating the vectors to be strongly zoophilic. Among the vectors collected from human dwellings, 94.2% were from thatched structures and the remaining 5.8% from tiled and asbestos structures. 57.75% of the dissected vectors were nulliparous whereas, 35.83% were monoparous and the rest 6.42% biparous. Sporozoite positivity rate was 0.55% (4/720) and 1.92% (1/52) for An. stephensi collected from cattle sheds and human dwellings, respectively. One adult An. subpictus (1/155) was also found to be infected with P. falciparum.ConclusionsControl of the adult vector populations can be successful only by understanding the resting and feeding preferences. The present study indicates that adult vectors predominantly feed on cattle and cattle sheds are the preferred resting place, possibly due to easy availability of blood meal source and lack of any insecticide or repellent pressure. Hence targeting these resting sites with cost effective, socially acceptable intervention tools, together with effective larval source management to reduce vector breeding, could provide an improved integrated vector management strategy to help drive down malaria transmission and assist in India’s plan to eliminate malaria by 2030.

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“…stephensi used animal sheds for resting which would help in completing its gonotrophic cycle [17]. Four of the five infected mosquitoes were collected from cattle sheds/outdoors.…”

Section: Discussionmentioning

confidence: 99%

Resting and feeding preferences of Anopheles stephensi in an urban setting, perennial for malaria

Thomas

Ravishankaran

Justin

et al. 2017

Malar J

View full text Add to dashboard Cite

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“…Gravid (G) and/or semigravid (SG) condition of the female abdomen were determine as resting stages, and females with unfed (U) and freshly fed (F) guts were demonstrative of seeking stages. The ratio G+CG/U+F was used to determine the tendency to rest in or outdoors [24] .…”

Section: Entomological Surveymentioning

confidence: 99%

“…Female mosquitoes were exposed to insecticides for 1 h (exposure time). At each exposure time, [20][21][22][23][24][25] adults were tested. Their mortality rate was recorded after a 24-h recovery period using cotton pads soaked with a 10%-glucose solution.…”

Section: Adult Susceptibility Testsmentioning

confidence: 99%

Some ecological attributes of malarial vector Anopheles superpictus Grassi in endemic foci in southeastern Iran

Nejati

Vatandoost

Oshghi

et al. 2013

Asian Pacific Journal of Tropical Biomedicine

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“…20 However, the accurate interpretation of host preference is possible only when adequate variety of hosts is present in the study area. 21 Out of the four Anopheles vector species tested during peak malaria transmission period in the present study, An.…”

Section: Discussionmentioning

confidence: 99%

Polymerase chain reaction detection of human host preference andPlasmodiumparasite infections in field collected potential malaria vectors

Dhiman

Bhola

Goswami

et al. 2012

Pathogens and Global Health

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This study was carried out to determine the human host preference and presence of Plasmodium parasite in field collected Anopheles mosquitoes among four villages around a military cantonment located in malaria endemic Sonitpur district of Assam, India. Encountered malaria vector mosquitoes were identified and tested for host preference and Plasmodium presence using PCR method. Human host preference was detected using simple PCR, whereas vectorial status for Plasmodium parasite was confirmed using first round PCR with genus specific primers and thereafter nested PCR with three Plasmodium species specific primers. Out of 1874 blood fed vector mosquitoes collected, 187 (10%) were processed for PCR, which revealed that 40.6% had fed on human blood; 9.2% of human blood fed mosquito were harbouring Plasmodium parasites, 71.4% of which were confirmed to Plasmodium falciparum. In addition to An. minimus, An. annularis and An. culicifacies were also found positive for malaria parasites. The present study exhibits the human feeding tendency of Anopheles vectors highlighting their malaria parasite transmission potential. The present study may serve as a model for understanding the human host preference of malaria vectors and detection of malaria parasite inside the anopheline vector mosquitoes in order to update their vectorial status for estimating the possible role of these mosquitoes in malaria transmission. The study has used PCR method and suggests that PCR-based method should be used in this entire malarious region to correctly report the vectorial position of different malaria vectors.

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Seasonal Abundance and Host-Feeding Patterns of Anopheline Vectors in Malaria Endemic Area of Iran

Cited by 36 publications

References 16 publications

Resting and feeding preferences of Anopheles stephensi in an urban setting, perennial for malaria

Resting and feeding preferences of Anopheles stephensi in an urban setting, perennial for malaria

Some ecological attributes of malarial vector Anopheles superpictus Grassi in endemic foci in southeastern Iran

Polymerase chain reaction detection of human host preference andPlasmodiumparasite infections in field collected potential malaria vectors

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