高安市四害种群、生境分布与季节消长调查

AN INVESTIGATION ON THE FOUR PESTS' ECOLOGY CIRCUMSTANCES AND SEASONAL GROWTH AND DECLINE IN GAOAN CITY.

目的 :掌握四害种群、生境分布及季节消长情况。方法 :捕鼠用鼠夹法 ;捕蚊用人工小时法 ;捕蝇用粘蝇带法 ;蟑螂用诱捕盒法。结果 :鼠平均密度指数为 3.2 9% ,以褐家鼠为优势种 ,占 5 5 .49% ,居民住宅区所占比重较大 ,为80 .70 % ,季节消长不明显。蚊密度指数为 13.40只 /人工小时 ,以三带喙库蚊为优势种 ,占 6 6 .2 8% ,生境以储藏间 (室 )为高 ,占 6 3.14% ,季节性明显 :1～ 3月、 12月未捕获成蚊 ,6～ 10月为活动高峰 ,占 82 .31%。蝇密度指数为 2 7.41只 /旬 ,以家蝇为优势种占 42 .43% ,生境以小饭店为高 ,占 42 .13% ,季节高峰期明显 ,5～ 10月活动高峰占 87.16 %。蟑螂密度指数为 0 .0 6 6只 /盒 ,仅发现黑胸大蠊 ,居民厨房是蟑螂活动的重要场所 ,占 5 9.83% ,6～ 9月为活动高峰 ,占 6 2 .6 9%。结论 :蚊、蝇、蟑螂有明显季节性活动高峰期 ,喜活动于温暖、潮湿。

Objective:To investigate the distribution and the seasonal growth and decline of the four pests.Methods:Mice are caught with middle-sized moustraps.Mosquitoes are caught by man;flies are caught with flypapers;Roaches are caught with boxes with baits in them.Results:The average density index of mice is 3.29%.The dominating kind is R.norvegicus(55.49%).The main ecology circumstance is in residential areas(80.70%).The seasonal growth and decline isn't clear.The density index of mosquitoes is 13.40 mosquitoes per hour.The dominating kind is tritaeniorhynchus(66.28%).The chief ecology circumstance of mosquitoesis is storetooms(63.14%).The seasonal growth and decline is very clear:grown mosquitoes are not found in ganuary.Very large amount of mosquitoes(82.31%) are caught from June to October.The density index of flies is 27.41 flies per ten day.The dominant kind is the musca domestica(42.43%).The flies ecology circumstance is mainly in the restaurants(42.13%).The perk of the seasonal growth is obvious:87.16% files have been caught from May to October.The density index of roaches is 0.066 roaches per box.Only periplanetu fuliginosa have been found.The roaches' ecology circumstance is in kitchens(59.83%).62.69% roaches have been caught from June to September.Conclusion:Mosquitoes files and roaches have their own peaks of the seasonal growth.They love to live in those places which are warm,damp,moist and full of food.