The medical and economic importance of ticks has long been recognized due to their ability to transmit diseases to humans and animals. Ticks cause great economic losses to livestock, and adversely affect livestock hos...The medical and economic importance of ticks has long been recognized due to their ability to transmit diseases to humans and animals. Ticks cause great economic losses to livestock, and adversely affect livestock hosts in several ways. Loss of blood is a direct effect of ticks acting as potential vector for haemo-protozoa and helminth parasites. Blood sucking by large numbers of ticks causes reduction in live weight and anemia among domestic animals, while their bites also reduce the quality of hides. However, major losses caused by ticks are due to their ability to transmit protozoan, rickettsial and viral diseases of live-stock, which are of great economic importance world-wide. There are quite a few methods for controlling ticks, but every method has certain shortcomings. The present review is focused on ticks importance and their control.展开更多
The study was carried out to find the prevalence of ectoparasites in carp species specifically Indian Major Carps(IMC)during the post monsoon season(November’16 to March’17).Four groups of ectoparasites viz.myxozoan...The study was carried out to find the prevalence of ectoparasites in carp species specifically Indian Major Carps(IMC)during the post monsoon season(November’16 to March’17).Four groups of ectoparasites viz.myxozoan,ciliophoran,monogenean and crustacean were recorded from a total 500 number of carp species like,Labeo rohita,Catla catla,Cirrhinus mrigala and Labeo calbasu collected from different ponds of selected blocks of South 24-Parganas district of West Bengal.The highest prevalence(64.8%)of infestation had been recorded by Myxozoans and the lowest was by Monogeneans(4.8%).The highest and lowest ectoparasitic prevalence in carp was observed in L.rohita(32.9%)and C.catla(27.3%).Beside these,lower temperature(Average 19.3℃),low pH(Average 6.9)and marginal level of dissolved oxygen(Average 6.0ppm)were also created an unfavorable condition for parasitic infestation during this season.At the end of this experiment it was concluded that disease occurrences due to ectoparasites was high in winter with some key factors like temperature,pH and dissolved oxygen(DO).展开更多
基金Project (No. 2005C12015) supported by the Department of Science and Technology of Zhejiang Province, China
文摘The medical and economic importance of ticks has long been recognized due to their ability to transmit diseases to humans and animals. Ticks cause great economic losses to livestock, and adversely affect livestock hosts in several ways. Loss of blood is a direct effect of ticks acting as potential vector for haemo-protozoa and helminth parasites. Blood sucking by large numbers of ticks causes reduction in live weight and anemia among domestic animals, while their bites also reduce the quality of hides. However, major losses caused by ticks are due to their ability to transmit protozoan, rickettsial and viral diseases of live-stock, which are of great economic importance world-wide. There are quite a few methods for controlling ticks, but every method has certain shortcomings. The present review is focused on ticks importance and their control.
文摘The study was carried out to find the prevalence of ectoparasites in carp species specifically Indian Major Carps(IMC)during the post monsoon season(November’16 to March’17).Four groups of ectoparasites viz.myxozoan,ciliophoran,monogenean and crustacean were recorded from a total 500 number of carp species like,Labeo rohita,Catla catla,Cirrhinus mrigala and Labeo calbasu collected from different ponds of selected blocks of South 24-Parganas district of West Bengal.The highest prevalence(64.8%)of infestation had been recorded by Myxozoans and the lowest was by Monogeneans(4.8%).The highest and lowest ectoparasitic prevalence in carp was observed in L.rohita(32.9%)and C.catla(27.3%).Beside these,lower temperature(Average 19.3℃),low pH(Average 6.9)and marginal level of dissolved oxygen(Average 6.0ppm)were also created an unfavorable condition for parasitic infestation during this season.At the end of this experiment it was concluded that disease occurrences due to ectoparasites was high in winter with some key factors like temperature,pH and dissolved oxygen(DO).
