Investigation of common Culicoides biting midges in human settlements in Fujian Province

doi:10.12140/j.issn.1000-7423.2024.05.020

Abstract

Abstract:

To investigate the population distribution of common Culicoides biting midges in human settlements in Fujian Province, 19 surveillance sites were set up at different environment in the human settlements (human house, field, livestock houses and mangroves near houses) of 9 cities in Fujian Province from June, 2022 to September, 2023, and the midges were collected by light trap. The species of midges were identified by morphological classification and molecular identification of cylochrome C oxidase subunit 1 (cox1) gene. The database was established by Microsoft Excel 2007 software and SPSS 26.0 software was used to perform the statistical analysis. The degree of linear correlation between meteorological conditions and the number of Culicoides was analyzed by Pearson correlation analysis. A total of 7 862 Culicoides were collected, which were identified as 13 species belonging to 6 subgenera. Twelve species were identified by morphological classification, and 1 species was identified as C. circumbasalis by molecular identification. C. arakawae had the broadest distribution, being caught in all 19 surveillance sites. The number of Culicoides caught in human house, field, livestock houses and mangroves accounted for 7.10% (558/7 862), 12.79% (1 006/7 862), 30.44% (2 393/7 862) and 49.67% (3 905/7 862) of the total, respectively. C. arakawae was the dominant species of human house (85.84%, 479/558), field (84.00%, 845/1 006) and livestock houses (87.67%, 2 098/2 393), and C. circumbasalis was the dominant species of mangroves (99.74%, 3 895/3 905). C. circumbasalis was consistently captured in the mangroves throughout the entire year, with a notable peak in July (52.32%, 2 038/3 895). The number of catched C. circumbasalis showed a positive correlation with the average monthly temperature (r = 0.628, P < 0.05), but no correlation with mean wind speed or rainfall (r = -0.316, -0.073, both P > 0.05). The results of this investigation showed that the population of Culicoides in human settlements was diverse and abundant in Fujian Province. C. arakawae had the broadest distribution, being the dominant species of human house, field and livestock houses, and C. circumbasalis was the dominant species of mangroves.

Key words: Culicoides, Human settlements, Population distribution, Mangroves, Fujian Province

CLC Number:

R384.5

CHEN Zhuyun, XIAO Lizhen, OUYANG Rong, XIE Hanguo. Investigation of common Culicoides biting midges in human settlements in Fujian Province[J]. CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES, 2024, 42(5): 679-683.

Figures/Tables 4

References 18

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采集点	荒川库蠓	原野库蠓	尖喙库蠓	抚须库蠓	日本库蠓	异域库蠓	北京库蠓	灰黑库蠓	琉球库蠓	环基库蠓	长斑库蠓	刺螯库蠓	霍飞库蠓	美美库蠓
福州晋安新店	+	+
福州福清面朝北村	+	+	+	+	+	+	+
福州长乐岐阳村	+
莆田城厢常太顶角	+
莆田荔城岱峰村	+						+
莆田秀屿西徐村	+
莆田仙游樟林村	+
三明宁化罗坊村	+	+	+	+	+			+
三明明溪大富村	+		+		+	+
三明永安新中村	+										+
三明尤溪惠州村	+				+
南平浦城后井村	+
南平松溪紫牛新村	+			+
南平武夷山桐木村	+			+	+				+		+	+
龙岩新罗坂溪村	+	+		+			+
泉州洛阳桥红树林	+		+							+
厦门集美双岭村	+		+	+		+	+						+
漳州华安湖坪村	+			+
宁德寿宁前村底	+	+							+		+		+	+

库蠓种类	畜舍		田野		人房		红树林
库蠓种类	数量/只	构成比/%	数量/只	构成比/%	数量/只	构成比/%	数量/只	构成比/%
荒川库蠓	2 098	87.67	845	84.00	479	85.84	7	0.18
原野库蠓	31	1.30	54	5.37	9	1.61	0	0
尖喙库蠓	86	3.59	21	2.09	15	2.69	3	0.08
抚须库蠓	24	1.00	17	1.69	7	1.25	0	0
灰黑库蠓	23	0.96	18	1.79	19	3.41	0	0
环基库蠓	0	0	0	0	0	0	3 895	99.74
琉球库蠓	48	2.01	25	2.48	16	2.87	0	0
长斑库蠓	39	1.63	11	1.09	1	0.18	0	0
其他库蠓	44	1.84	15	1.49	12	2.15	0	0
合计	2 393	100	1 006	100	558	100	3 905	100