Abstract:
BACKGROUND:The relationship between climatic factors and mosquito abundance is very important to determine parasite activity levels and, therefore, disease risk. Therefore, this study was conducted to investigate the seasonal abundance of anophelines and their association with meteorological variables and disease transmission in two malaria endemic areas of Bangladesh. METHODS:Monthly sampling was done from both indoors and outdoors in 12 selected houses using light traps (LTs) and pyrethrum spray (PS) during January, 2011 to January, 2012 in two malaria endemic areas of Bangladesh. Outdoor rainfall, temperature, and relative humidity data of the study areas were collected from the meteorological department of Bangladesh. Mosquitoes were killed with chloroform and identified morphologically under stereoscopic microscopes using taxonomic keys. Samples were tested for CSP of P. falciparum, P. vivax 210 and P. vivax 247 using ELISA. Pearson correlation and canonical correspondence analyses (CCA) were computed to investigate the associations with species abundance and rainfall, temperature, humidity and malaria cases. RESULTS:A total of 2,443 female anophelines, representing 22 species were captured. Every female Anopheles were tested for P. falciparum, P. vivax 210 and P. vivax 247 CSP, of which 10 species were found positive. The CSP positive species were An. annularis, An. baimaii, An. barbirostris, An. jeyporiensis, An. karwari, An. minimus s.l., An. philippinensis, An. umbrosus, An. vagus and An. wilmori. Anopheles vagus and An. philippinensis were the dominant species present almost throughout the year with highest peaks in March and smallest peaks in September but An. baimaii and An. willmori were found during monsoon (July -September) only. Lag rainfall and relative humidity were the most significant variables influencing An. baimaii, An. willmori, An. vagus, and An. subpictus density in Kumari area. Abundance of these four species positively related to malaria cases. The effects of temperature were not found as a significant variable on the abundance of anophelines mosquitoes in Bangladesh. CONCLUSIONS:Our study demonstrates that the nature of relationship between malaria vector and climatic variables were multifaceted. Detailed studies of vector bionomics, continuous monitoring and malaria transmission dynamics is essential for predicting disease outbreaks and vector control in the region.
journal_name
Parasit Vectorsjournal_title
Parasites & vectorsauthors
Bashar K,Tuno Ndoi
10.1186/1756-3305-7-442subject
Has Abstractpub_date
2014-09-18 00:00:00pages
442issn
1756-3305pii
1756-3305-7-442journal_volume
7pub_type
杂志文章abstract:BACKGROUND:Cystic echinococcosis (CE) is a near cosmopolitan zoonosis caused by the larval stage of the dog tapeworm Echinococcus granulosus. E. granulosus infection induces a polarized T-helper type 2 (Th2) systematic immune response in its intermediate hosts. However, it is not known whether the infection modulates l...
journal_title:Parasites & vectors
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journal_title:Parasites & vectors
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journal_title:Parasites & vectors
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journal_title:Parasites & vectors
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journal_title:Parasites & vectors
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doi:10.1186/1756-3305-6-266
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journal_title:Parasites & vectors
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journal_title:Parasites & vectors
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-015-0774-9
更新日期:2015-03-18 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-5-246
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journal_title:Parasites & vectors
pub_type: 杂志文章
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abstract::Onchocerciasis (river blindness) is a blinding parasitic disease that threatens the health of approximately 120 million people worldwide. While 99% of the population at-risk for infection from onchocerciasis live in Africa, some 500,000 people in the Americas are also threatened by infection. A relatively recent arriv...
journal_title:Parasites & vectors
pub_type: 杂志文章,评审
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journal_title:Parasites & vectors
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journal_title:Parasites & vectors
pub_type: 杂志文章
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journal_title:Parasites & vectors
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更新日期:2016-02-24 00:00:00
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journal_title:Parasites & vectors
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journal_title:Parasites & vectors
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更新日期:2017-10-24 00:00:00
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journal_title:Parasites & vectors
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journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2013-05-24 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2013-03-15 00:00:00
abstract::Echinococcus transmission is known to be affected by various environmental factors, which may be modified by human influence or natural events including global warming. Considerable population growth in the last fifty years in Ningxia Hui Autonomous Region (NHAR), the People's Republic of China (PRC), has led to drama...
journal_title:Parasites & vectors
pub_type: 杂志文章,评审
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更新日期:2012-07-24 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2014-09-02 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-019-3638-x
更新日期:2019-07-29 00:00:00