Anopheline Species Complexes in South and South-East Asia by World Health Organization

By World Health Organization

Vector-borne ailments are an incredible ailment in South-East Asia and in different elements of the realm. There are approximately 4,500 mosquito species in lifestyles; species belonging to the Anopheles genus transmit malaria. battling malaria is a part of the Millennium improvement pursuits, and vector keep an eye on is a key process either locally and globally. consequently, the evaluation and dissemination of data on vector species is severely very important. many of the anophelines which are occupied with the transmission of malaria in South and South-East Asia were pointed out as species complexes. contributors of a species advanced are reproductively remoted evolutionary devices with targeted gene swimming pools and consequently they vary of their organic features. In 1998 WHO released Anopheline Species Complexes in South-East Asia. New identity instruments were constructed due to the fact that then, and consequently this up to date version used to be wanted. It summarizes paintings that has been performed on anopheline cryptic species and may be hugely invaluable to researchers, box entomologists and malaria-control software managers.

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Extra resources for Anopheline Species Complexes in South and South-East Asia (SEARO Technical Publications)

Sample text

Specimens belonging to the sub-metacentric and acrocentric categories were identified as species E and B respectively. Among the cytologically-unidentified specimens, both species B and E were also found (Surendran, Sri Lanka, and K. Raghavendra, MRC, India, personal communication). This establishes that in Sri Lanka, species B and E are sympatric as in Rameshwaram island in India. Baimai, Kijchalao and Rattanarithikul (1996) Anopheline Species Complexes in South and South-East Asia 27 reported species A and B from the Chiang Mai province of Thailand.

Species B used in this study was supplied by the Malaria Research Centre, Delhi, India. This colony was established from An. l. collected from an area where both A and B are sympatric. The colony was identified as species B several generations after its establishment. In laboratory feeding experiments on P. vivaxinfected blood (Adak, Kaur and Singh, 1999) and P. vincei petteri and P. yoelii yoelii-infected mice (Kaur, Singh and Adak, 2000), species A had significantly higher oocyst rate compared to species B and C and species B was found the least susceptible.

Species B is also reported from Sumatra island, Indonesia. Species C is reported only from Thailand (Kanchanaburi, Nakhon Si Thammarat and Phat-thalung). Species D is commonly found on the north-western side of Thailand. Along the Thai-Myanmar border it is found in sympatric association with species A. , 1988) and north-eastern states of India (Baimai, 1989). The distribution of species D in India was predicted based on its distribution in Thailand and Myanmar. Recently, in four north-eastern states of India (Assam, Arunachal Pradesh, Meghalaya and Nagaland) using Walton et al.

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