Changes in abundance and behaviour of vector mosquitoes induced by land use during the development of an oil palm plantation in Sarawak

@article{citeulike:2291230, abstract = {Surveys were conducted of adult and immature mosquitoes in an area undergoing oil palm development in north Sarawak. Point prevalence data from 2 sites were collected annually, coinciding with annual phases of forest clearing, burning/cultivation, and maintenance. Major habitat perturbation during the forest/clearing transition shifted the major mosquito faunal equilibrium in terms of species composition, relative density and occurrence. Analyses of variance showed that the mean numbers of 4 species of Anopheles decreased significantly after forest clearing. Relative densities of immature stages decreased after forest clearing, but A. letifer and Culex tritaeniorhynchus remained relatively unchanged after the second year. Comparisons with the pre-development forest stage showed that the reductions in person-biting rates, adult survival and combined entomological inoculation rates (EIR) of A. donaldi and A. letifer decreased the risk of malaria transmission by 90\% over the 4 years period. Concomitant reductions in EIR and annual malaria incidence were also correlated. This study highlighted the 'law of unintended consequences', since 2 contrasting effects were observed: reduction of malaria vectors but concomitant increase of dengue vectors.}, author = {Chang, M. S. and Hii, J. and Buttner, P. and Mansoor, F. }, citeulike-article-id = {2291230}, doi = {10.1016/S0035-9203(97)90248-0}, journal = {Transactions of the Royal Society of Tropical Medicine and Hygiene}, keywords = {diptera, insects, invertebrates, oil\_palm}, month = {}, number = {4}, pages = {382--386}, posted-at = {2008-01-25 19:46:14}, priority = {2}, title = {Changes in abundance and behaviour of vector mosquitoes induced by land use during the development of an oil palm plantation in Sarawak}, url = {http://dx.doi.org/10.1016/S0035-9203(97)90248-0}, volume = {91}, year = {1997} }

TY - JOUR ID - citeulike:2291230 L3 - citeulike-article-id:2291230 TI - Changes in abundance and behaviour of vector mosquitoes induced by land use during the development of an oil palm plantation in Sarawak JF - Transactions of the Royal Society of Tropical Medicine and Hygiene VL - 91 IS - 4 SP - 382 EP - 386 N2 - Surveys were conducted of adult and immature mosquitoes in an area undergoing oil palm development in north Sarawak. Point prevalence data from 2 sites were collected annually, coinciding with annual phases of forest clearing, burning/cultivation, and maintenance. Major habitat perturbation during the forest/clearing transition shifted the major mosquito faunal equilibrium in terms of species composition, relative density and occurrence. Analyses of variance showed that the mean numbers of 4 species of Anopheles decreased significantly after forest clearing. Relative densities of immature stages decreased after forest clearing, but A. letifer and Culex tritaeniorhynchus remained relatively unchanged after the second year. Comparisons with the pre-development forest stage showed that the reductions in person-biting rates, adult survival and combined entomological inoculation rates (EIR) of A. donaldi and A. letifer decreased the risk of malaria transmission by 90% over the 4 years period. Concomitant reductions in EIR and annual malaria incidence were also correlated. This study highlighted the 'law of unintended consequences', since 2 contrasting effects were observed: reduction of malaria vectors but concomitant increase of dengue vectors. KW - diptera KW - insects KW - invertebrates KW - oil_palm AU - Chang, MS AU - Hii, J AU - Buttner, P AU - Mansoor, F PY - 1997/0// UR - http://dx.doi.org/10.1016/S0035-9203(97)90248-0 ER -