tailieunhanh - Biological control of vector mosquitoes by some common exotic fish predators

Predation experiments using Cyprinus carpio Linnaeus (1758), Ctenopharyngodon idella (Valenciennes 1844), Oreochromis niloticus niloticus (Linnaeus 1758) and Clarias gariepinus (Burchell 1822) were conducted against fourth instar Anopheles stephensi Liston (1901) larvae and pupae at varying prey and predator densities. | Turk J Biol 29 (2005) 167-171 © TÜB‹TAK Biological Control of Vector Mosquitoes by Some Common Exotic Fish Predators Anupam GHOSH, Samir MANDAL, Indranil BHATTACHARJEE, Goutam CHANDRA Mosquito Research Unit, Department of Zoology, Burdwan University, West Bengal - INDIA Received: Abstract: Predation experiments using Cyprinus carpio Linnaeus (1758), Ctenopharyngodon idella (Valenciennes 1844), Oreochromis niloticus niloticus (Linnaeus 1758) and Clarias gariepinus (Burchell 1822) were conducted against fourth instar Anopheles stephensi Liston (1901) larvae and pupae at varying prey and predator densities. The relative prey consumption rates of the four fish species for An. stephensi larvae and pupae during 24-hour experiments under laboratory conditions were C. gariepinus > C. idella > C. carpio > O. n. niloticus. Predatory efficacy was positively related with prey density and inversely related with water volume (search area). A significant decrease in larval abundance in dipper samples was observed at 30 and 45 days after introduction of fishes (30 individuals each) in field conditions. The efficacy of the fish under field conditions was also indicated by significant increases of larval mosquito abundance at 30 and 45 days after removal of fishes. Key Words: Biological control, larvivorous fish, Anopheles stephensi, immature mosquitoes Introduction Biological control is defined as the action of predators, parasites (parasitoids) or pathogens in maintaining the density of another organism at a lower average than would occur in their absence. Biological control of vectors is an essential and effective means for controlling transmission of several mosquito-borne diseases such as malaria, filariasis, JE, dengue fever, etc. Modern researchers are inclined to use biocontrol agents rather than chemical insecticides due to the residual effects of chemical insecticides, widespread resistance in target insects, high refusal rate for indoor spray, soaring .

• Sinh học
• Biological control
• Larvivorous fish
• Anopheles stephensi
• Immature mosquitoes
• Ctenopharyngodon idella
• Early post emergent herbicides
• Herbicide mixtures
• Soil biological activity
• Soil biological activity in maize L
• Control and soil biological activity
• Insect pests
• Cryptic habitats
• Entomopathogenic nematode systematics
• Agricultural science
• Native antagonistic bacterial isolates
• Biological control of crown gall disease in Egypt
• Agrobacterium tumefaciens
• Heavy metals
• Salvinia molesta
• Biological control of heavy metal pollutants
• Water by Salvinia molesta
• Damping off
• Rhizoctonia solani
• Biological control agent
• Damping off of okra
• Microbial control
• Entomopathogenic bacteria
• Dose mortality test
• Biological control agent against the pest
• Entomopathogenic nematodes
• Promising biological control agents
• Chemical methods of control
• science books
• Microbial
• Insect Growth
• Genetic Control
• Genetic Engineering
• Insecticides
• Control theory
• Systems biology
• A control theoretic interpretation
• Metabolic control analysis
• Biological systems
• Stochastic biochemical processes
• Frankliniella occidentalis
• Amblyseius swirskii
• Low polythene tunnels
• Plastic greenhouse
• Chestnut blight
• Natural dissemination
• Relative humidity
• Cryphonectria parasitica strain
• Biological control of chestnut blight
• Fusarium wilt
• Antagonistic rhizobacteria
• Soil borne fungal pest management
• Chickpea (Cicer arietinum L
• Conservation biological control
• Organic farming
• Ecological engineering
• Organic ecological engineering field
• Bio fertilizers
• Alternaria solani
• Biocontrol activity
• Tomato plants for biological control
• Isolation and characterization
• Characterization of yeast
• Bombyx mori L
• White muscardine
• Beauveria bassiana
• Trichoderma spp
• Trichoderma species
• Biological control of beauveria bassiana
• Collar rot of chickpea
• Sclerotium rolfsii
• Sclerotium rolfsii (The Cause of Collar Rot of Chickpea)
• N2 fixation
• Antagonistic effect
• Biological control bacteria pseudomonas
• Inhibits free nitrogen fixing bacteria
• Nitrogen fixing bacteria in the rhizosphere
• Vibrio spp
• Artemia salina
• Phenotypic characterization of vibrio species
• Vibrio species
• Application of indigenous phages
• Biological control of vibrio
• BMC Genomics
• Cryptolaemus montrouzieri
• Prey adaptation
• Various mealybug pests
• Medicinal plants for plant growth promotion
• Trans zeatin riboside
• 16S rRNA gene sequence
• Lecture Biology
• Biological sciences
• Biological organization
• Control of metabolism
• The role of catabolic
• Structure of chromatin
• Control of eukaryotic genomes
• Journal of Zoology
• Aenasius arizonensis
• Phenacoccus solenopsis
• Biological parameters
• Field study
• Parasitism rate
• Two sex life table