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| Fasciolidae | |
|---|---|
| Name | Fasciolidae |
| Regnum | Animalia |
| Phylum | Platyhelminthes |
| Classis | Trematoda |
| Ordo | Echinostomida |
| Familia | Fasciolidae |
| Subdivision ranks | Genera |
| Subdivision | Fasciola; Fascioloides; Parafasciolopsis |
Fasciolidae is a family of parasitic Platyhelminthes within the class Trematoda that includes liver flukes of veterinary and medical importance. Members are digenean trematodes infecting mammals and relying on aquatic gastropods as intermediate hosts; their biology and control intersect with issues addressed by institutions like the World Health Organization, Food and Agriculture Organization, and veterinary services in countries such as United Kingdom, United States, and China. Research on Fasciolidae has influenced policies by organizations including the Centers for Disease Control and Prevention, European Centre for Disease Prevention and Control, and World Organisation for Animal Health.
Fasciolidae are placed in the phylum Platyhelminthes and class Trematoda, order Echinostomida; historically taxonomic treatments have been revised by researchers associated with museums and universities such as the Natural History Museum, London, the Smithsonian Institution, University of Oxford, University of Cambridge, and Harvard University. Genera recognized by contemporary parasitologists include Fasciola, Fascioloides, and Parafasciolopsis, with species described by taxonomists working in institutions like the Royal Society and the Academy of Sciences of the USSR (historical descriptions). Molecular phylogenetics using markers employed in studies at Max Planck Institute, Sanger Institute, and Cold Spring Harbor Laboratory has refined relationships and clarified species complexes relevant to regulatory agencies including the European Food Safety Authority.
Adults are dorsoventrally flattened hermaphroditic trematodes with oral and ventral suckers; morphological descriptions have been standardized in identification manuals used by laboratories at Centers for Disease Control and Prevention and university parasitology courses at University of California, Davis and Iowa State University. Eggs, miracidia, sporocysts, rediae, cercariae, metacercariae and adult stages follow the digenean life cycle characterized in landmark texts by authors affiliated with Cambridge University Press, Oxford University Press, and research groups at Johns Hopkins University. Developmental timing and morphological variation are subjects of studies published by researchers from institutions such as National Institutes of Health, Institut Pasteur, and Pasteur Institute of Iran.
Principal definitive hosts include domestic ruminants like cattle, sheep, and goats, species managed in agricultural systems overseen by organizations like the United States Department of Agriculture and the European Commission. Human infection occurs in areas linked to food practices studied by public health agencies such as the World Health Organization and national ministries of health in countries including Iran, Peru, Egypt, Vietnam, and Bolivia. Aquatic snail intermediate hosts belong to families such as Lymnaeidae; snail ecology and transmission dynamics have been investigated by researchers from the Smithsonian Tropical Research Institute, Kew Gardens, and regional universities including Universidad Nacional Mayor de San Marcos. Transmission pathways intersect with water management projects coordinated by entities like the World Bank and United Nations Development Programme.
Fasciolidae species have a global distribution with focal endemicity in temperate and tropical regions; notable endemic areas include parts of Europe, Africa, South America, and Asia, with disease hotspots documented in countries like Peru, Bolivia, Argentina, Egypt, Iran, and China. Habitat requirements tie to freshwater environments, irrigation schemes and wetlands often modified by infrastructure projects involving agencies such as the Asian Development Bank, African Development Bank, and national ministries of agriculture. Surveillance and mapping efforts have been carried out by collaborations among institutions including World Health Organization, Pan American Health Organization, and national public health institutes.
Infections can cause hepatic and biliary disease in livestock leading to production losses monitored by veterinary services like the Royal College of Veterinary Surgeons and economic assessments by the Food and Agriculture Organization. Human fascioliasis manifests with acute fluke migration and chronic biliary inflammation; clinical features and public health burden have been described in reports from the World Health Organization, clinical centers such as Mayo Clinic, Cleveland Clinic, and teaching hospitals affiliated with University College London Hospitals NHS Foundation Trust. Complications can require interventions akin to procedures performed in tertiary centers including Guy's and St Thomas' NHS Foundation Trust and university hospitals collaborating on hepatobiliary research.
Diagnostic methods include coproparasitological egg detection, serology, antigen detection, and imaging modalities used in clinical practice at institutions like Massachusetts General Hospital, Charité – Universitätsmedizin Berlin, and diagnostic reference laboratories of Public Health England. Molecular diagnostics employ PCR assays developed in research labs at Pasteur Institute and university centers such as Imperial College London. Anthelmintic therapy primarily uses triclabendazole, with drug availability and resistance monitored by agencies including the World Health Organization and national regulatory bodies such as the European Medicines Agency and U.S. Food and Drug Administration.
Control strategies combine anthelmintic treatment programs coordinated by ministries of agriculture and health, snail control measures informed by environmental management projects by organizations like the United Nations Environment Programme, and public health education delivered through campaigns by World Health Organization and local health ministries. Integrated One Health approaches involving collaborations among veterinary schools such as Royal Veterinary College, public health schools like London School of Hygiene & Tropical Medicine, and international donors including the Bill & Melinda Gates Foundation emphasize surveillance, water and sanitation improvements, and agricultural practices to reduce transmission.
Category:Parasitic flatworms