泰国农汉湿地猪尾棘蚴及鲤科鱼类丰度分布

IF 2 Q3 INFECTIOUS DISEASES

Parasite Epidemiology and Control Pub Date : 2025-07-02 DOI:10.1016/j.parepi.2025.e00447

Wiwat Kaensa , Lakhanawan Charoensuk , Chadon Nakmai , Somchai Pinlaor , Apiporn T. Suwannatrai , Umawadee Laothong , Suksanti Prakobwong

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引用次数: 0

摘要

在东南亚，特别是在泰国，由毒舌绦虫（Opisthorchis viverrini）引起的毒舌病仍然是一个令人关注的公共卫生问题。本研究调查了泰国东北部农汉湿地鲤科鱼类中O. viverrini囊蚴的流行程度和强度，并对鱼类丰度和影响寄生虫分布的环境因素进行了评估。在多雨季节（2024年6月- 10月）和干旱季节（2024年11月- 2025年3月），每月在8个地点取样。对鱼类进行鉴定，并对其相对丰度和物种多样性（Shannon-Wiener指数，H’）进行评价。用0.25%胃蛋白酶-盐酸消化鲤科鱼，在显微镜下检测、鉴定和定量O. viverrini囊蚴。同时分析水质参数（温度、pH、溶解氧和粪便大肠菌群水平）以评估它们与寄生虫分布的相关性。共捕获鱼类36种1429条，数量最多的是维氏滴虫（Trichogaster vittatus）。在11种392条鲤科鲤科鱼类中（H′= 1.8），6种感染了15.1%的猪弧菌囊蚴。环头鱼（Cyclocheilichthys apogon）患病率最高，为20.3%。感染强度最高的是gonionotus Barbonymus和Hampala dispar（6.0个囊蚴/条）。较高的粪便大肠菌群水平和靠近人类住区与感染有关。旱季患病率（17.8%）和强度（5.1±2.6）显著高于雨季（11.0%和2.6±1.1,P≤0.001）。粪大肠菌群与产弧菌流行率存在较强的相关性（r = 0.981, P≤0.001），热点地区靠近人类住区。研究结果强调了粪便污染、季节性和人为因素对弧菌传播的影响，强调了有针对性干预措施的必要性。

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Distribution of Opisthorchis viverrini metacercariae and cyprinoid fish abundance in Nong Han Wetland, Thailand

Opisthorchiasis, caused by Opisthorchis viverrini, remains a public health concern in Southeast Asia, particularly in Thailand. This study investigates the prevalence and intensity of O. viverrini metacercariae in cyprinoid fish from the Nong Han Wetland in Northeast Thailand, and assesses fish abundance and environmental factors influencing parasite distribution. Fish were sampled monthly at eight sites during the rainy (June – October 2024) and dry (November 2024 – March 2025) seasons. Fish species were identified, and their relative abundance and species diversity (Shannon-Wiener index (H′)) were assessed. Cyprinoid fish were digested with 0.25 % pepsin-HCl to detect, identified and quantify O. viverrini metacercariae under a microscope. Concurrent water quality paramteters (temperature, pH, dissolved oxygen, and fecal coliform levels) were analyzed to assess their correlation with parasite distribution. A total of 1429 fish from 36 species were collected, with Trichogaster vittatus (Family Belontiidae) being the most abundant. Among 392 cyprinoid fish (Family Cyprinidae) from 11 species (H′ = 1.8), 15.1 % were infected with O. viverrini metacercariae found in 6 species. Cyclocheilichthys apogon showed the significant highest prevalence (20.3 %). Infection intensity was highest in Barbonymus gonionotus and Hampala dispar (6.0 metacercariae/infected fish). Higher fecal coliform levels and proximity to human settlements correlated with infection. Dry season prevalence (17.8 %) and intensity (5.1 ± 2.6) were significantly greater than the rainy season (11.0 % and 2.6 ± 1.1, P ≤ 0.001). A strong correlation existed between fecal coliforms and O. viverrini prevalence (r = 0.981, P ≤ 0.001), with hotspots near human settlements. The findings highlight the influence of fecal contamination, seasonality, and human factors on O. viverrini transmission, emphasizing the need for targeted interventions.

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来源期刊

Parasite Epidemiology and Control Medicine-Infectious Diseases

CiteScore

5.70

自引率

3.10%

发文量

审稿时长

17 weeks

期刊介绍： Parasite Epidemiology and Control is an Open Access journal. There is an increasing amount of research in the parasitology area that analyses the patterns, causes, and effects of health and disease conditions in defined populations. This epidemiology of parasite infectious diseases is predominantly studied in human populations but also spans other major hosts of parasitic infections and as such this journal will have a broad remit. We will focus on the major areas of epidemiological study including disease etiology, disease surveillance, drug resistance and geographical spread and screening, biomonitoring, and comparisons of treatment effects in clinical trials for both human and other animals. We will also look at the epidemiology and control of vector insects. The journal will also cover the use of geographic information systems (Epi-GIS) for epidemiological surveillance which is a rapidly growing area of research in infectious diseases. Molecular epidemiological approaches are also particularly encouraged.