海南省5市县禽畜厩舍吸血蠓调查

Hematophagous midges at the hencoop and livestock sheds in five counties of Hainan

目的调查海南省文昌、乐东、昌江、儋州、澄迈等5市县吸血蠓的地理分布、种类组成和主要种的吸血率。方法2017-2018在海南省5市县猪舍、羊舍、鸡舍,采用诱虫灯采集吸血蠓;在生物显微镜下鉴定吸血蠓种类和记录数量,采用树胶酚封片法制作玻片标本。结果在海南省5市县共采获吸血蠓2属26种22355只,其中,库蠓24种,蠛蠓属2种;海南省新纪录1种,肿足库蠓Lasiohelea turgepeda Yu et Liu,1982。澄迈分布19种,儋州18种,文昌17种,昌江12种,乐东9种。主要种类为尖喙库蠓(32.88%),异域库蠓(16.10%),荒川库蠓(16.08%);不同市县和场所的主要种类组成不同。7种主要吸血蠓的总吸血率为34.10%,其中黄胸库蠓(53.78%)最高,肩宏库蠓(17.92%)最低。不同种类和场所吸血蠓吸血率不同。结论本项研究发现海南省5市县有吸血蠓2属26种,主要种类为尖喙库蠓,异域库蠓和荒川库蠓,其中黄胸库蠓的吸血率最高。

Objective To investigate geographical distribution,species composition and blood sucking rates of predomiant hematophagous midges in Wenchang,Ledong,Changjiang,Danzhou,Chengmai in Hainan province.Methods The hematophagous midges were captured with light traps at the pigpens,sheepfolds and hencoop in 5 counties and cities ofHainan province.The species and numbers of blood-sucking midges are observed by biological microscope.The specimen hasbeen slide-mounted in phenol-balsom.ResultsA total of 22355 hematophagous midges which belonging to 26 species 2 genera were collected,of which 24 species with genus Culicoides,and two species within genus Lasihelea.La.turgepeda Yu etLiu,1982 is for the first time in Hainan province.There are 19 species in Chengmai,18 species in Danzhou,17 species inWenchang,12 species in Changjiang,and 9 species in Ledong.The study showed that dominant species were C.oxystoma(32.88%),C.peregrinus(16.10%),and C.arakawai(16.08%),respectively.The species composition varied in differentcounties and settings.The total bloodsucking rates of 7 midges species was 34.10%,in which the highest bloodsucking rateswas C.flavescens(53.78%),and the lowest C.humeralis(17.92%).The bloodsucking rates varied between different species andsettings.ConclusionA total of 26 species 2 genera are found in five counties of Hainan Province.The dominant populationwere C.oxystoma,C.peregrinus,and C.arakawai.The C.flavescens had the highest bloodsucking rates.