12-02-2017, 12:31 AM
13-02-2017, 12:49 PM
The dynamics of the mosquito community is affected by tropical deforestation and fragmentation. Changes in land use, including deforestation, agriculture and urbanisation, have coincided with an increase in vector-borne diseases around the world. Changes in land use can alter mosquito populations by modifying the characteristics of aquatic larvae habitats, but we still do not fully understand the physical, chemical and biological factors involved. Samples of urban and grassland were collected compared to native forests. Urban land and grassland habitats were mostly artificial containers compared to land pools in native forests. Generalised linear modelling (GLM) revealed nine environmental variables that were significantly different among land uses. Of these variables, mosquito density correlated (positively) significantly with bacteria and dissolved organic carbon. When the location and date in the GLM were controlled, mosquito density was (negatively) related to the presence of vegetation and combined predators. Urban containers and stock pipes had a high density of mosquitoes, suggesting that an initial step in the direction of control operations should focus on these habitats.
Changes in land use, including deforestation, agriculture and urbanisation, are considered to be the major drivers of terrestrial environmental change and have often coincided with increases in the range of mosquito-borne diseases worldwide. Human activities may be responsible for fundamental changes in the physical, chemical and biological characteristics of mosquito larvae habitats that may cause increased female faeces position and larval survival. For example, deforestation can promote increased productivity of mosquitoes by allowing substantially higher levels of solar radiation to reach larval habitats, thus accelerating larval growth rate. Deforestation and agriculture can also alter mosquito populations by increasing detrital and microbial biomass in which mosquitoes feed as a result of livestock waste, runoff from fertilisers, and increased detrital decomposition with warmer temperatures. However, the relationship of these predators to land use and mosquito populations has not been examined. In general, studies on the relationship between land use and mosquitoes have suggested that the proliferation of new larval habitats, such as the creation of dams from water development projects and artificial containers of urbanisation, is the main Mechanism by which the change in the use of the soil has increased the productivity of the mosquito.
Changes in land use, including deforestation, agriculture and urbanisation, are considered to be the major drivers of terrestrial environmental change and have often coincided with increases in the range of mosquito-borne diseases worldwide. Human activities may be responsible for fundamental changes in the physical, chemical and biological characteristics of mosquito larvae habitats that may cause increased female faeces position and larval survival. For example, deforestation can promote increased productivity of mosquitoes by allowing substantially higher levels of solar radiation to reach larval habitats, thus accelerating larval growth rate. Deforestation and agriculture can also alter mosquito populations by increasing detrital and microbial biomass in which mosquitoes feed as a result of livestock waste, runoff from fertilisers, and increased detrital decomposition with warmer temperatures. However, the relationship of these predators to land use and mosquito populations has not been examined. In general, studies on the relationship between land use and mosquitoes have suggested that the proliferation of new larval habitats, such as the creation of dams from water development projects and artificial containers of urbanisation, is the main Mechanism by which the change in the use of the soil has increased the productivity of the mosquito.