Most of the cercariae penetrated the cropwall and encysted in the hemocoel, whereas one or more larvae invaded the ants central nervous system. Dicrocoeliosis a helminthic disease of domestic and wild animals rarely of man, caused by the lancet fluke dicrocoelium lanceatum. A taxonomic species within the family dicrocoeliidae further reading. Dicrocoelium definition of dicrocoelium by the free dictionary. Prevalence of liver flukes in cattle, and small ruminants. Dicrocoelium dendriticum has been reported in europe, asia, northern africa and north america, whereas d. It should be noted that the estimates of prevalence of the human liver flukes are, in most cases, decades old and probably inaccurate. Pdf prevalence of dicrocoelium dendriticum ova in ghanaian. Fasciola, fascioloides, and dicrocoelium cause liver fluke diseases in ruminants and are of zoonotic and economic importance. Effects dicrocoelium dendriticum is not usually considered to cause great problems to infected sheep. Pdf characterization of the 28s and the second internal. Gastrointestinal parasites of cattle and sheep slaughtered. A taxonomic genus within the family dicrocoeliidae certain parasitic liver flukes.
The aim of the present study was to determine the prevalence and intensity of infection with d. The aim of this study was to develop, perfect and validate the pcr polymerase chain reaction technique using mitochondrial mt and ribosomal its2 dna for the accurate identification of dicrocoelium dendriticum in molluscs and ants, the first and second intermediate hosts, and their early detection. Discussion dicrocoelium hospes and fasciola gigantica were found in the liver of cattle in sierra leone. It is divided administratively into zaria and sabon gari lgas and about 4075% of its working population derives their.
Dicrocoelium dendriticum is more commonly known as the lancet liver fluke. Dicrocoelium hospes definition of dicrocoelium hospes by. Pdf the possible snail intermediate hosts of dicrocoelium. Any of several parasitic trematode worms that infest the liver of humans and other mammals, especially clonorchis sinensis and several species in the. Fashuyi and others published the possible snail intermediate hosts of dicrocoelium hospes in nigeria find, read and cite all the research you need on researchgate. Dicrocoelium dendriticum along with dicrocoelium hospes are part of a group of flukes that can infect the bile ducts of humans. Dicrocoelium dendriticum or dicrocoelium hospes clinical. It is found in many countries and infects a wide range of definitive hosts, including domestic ruminants. The body of the parasite is flat and lancetshaped, 515 mm long, and has pointed ends. Human infection with dicrocoelium dendriticum in turkey.
Morphological and molecular differentiation between. Morphologic differences of the freed larvae could not be found, but there were evident differences in number and localization of the cerebral stages. Bile samples were analysed using sedimentation, while the faeces were subjected to standard floatation and sedimentation techniques. Detection of dicrocoelium dendriticum larval stages in. Threedimensional visualization and a deeplearning model. Abstract the speciesspecific ribosomal internal transcribed spacer 2 its2.
Dicrocoelium dendriticum an overview sciencedirect topics. Text is available under the creative commons attributionsharealike license. Dicrocoelium dendriticum in ruminants digestive system. Prevalence of dicrocoelium hospes and fasciola gigantica.
Evaluation of gastrointestinal parasites in bile and. Dicrocoeliasis is a condition that results when a parasitic flatworm, known as the lancet liver fluke specifically dicrocoelium dendriticum, infects the intestine and bile duct the lancet liver fluke often resides in the bile ducts of their human hosts, absorbing nutrients to multiply and propagate. Dicrocoelium dendriticum wikipedia, the free encyclopedia. I have seen a number of such cases in expatriates and peace corps volunteers in west africa who submitted stool. Human dicrocoeliasis presenting as a subcutaneous mass. Dicrocoelium dendriticum or dicrocoelium hospes pdf. Human infection by dicrocoelium dendriticum, a zoonotic liver fluke, is uncommon. However, it is possible for individual sheep to have as many as 50,000 parasites in the liver. The study assessed the prevalence and distribution of gastrointestinal parasites in bile and faeces of cattle and sheep from jos, plateau state, nigeria. A total of 300 bile samples of cattle which included 155 males and 145 females were collected from the. Capable of moving along the blood circulation, they can occur also in bile ducts, gallbladder, and liver parenchyma.
Similarly, knowledge of their true distribution is limited by the paucity of uptodate information, the high incidence of asymptomatic human infection, and the nature of the liver flukes as zoonoses. Field and experimental studies on dicrocoelium dendriticum. Dicrocoelium definition of dicrocoelium by medical dictionary. Dicrocoeliasis is a disease of the liver caused by the liver flukes, dicrocoelium dendriticum and dicrocoelium hospes.
Dicrocoelium dendriticum infections occur primarily in the eastern u. Logistic regression analyses were performed to determine risk factors for infections. Files are available under licenses specified on their description page. A taxonomic species within the family dicrocoeliidae. Pdf on mar 30, 2015, maxwell ofori and others published prevalence of dicrocoelium. Stool microscopy revealed numerous eggs of dicrocoelium dendriticum. Because the bodies of these parasites are long and narrow, infections are generally confined to the more distal parts of the bile ducts.
A third species, dicrocoelium orientalis which was described from musk deer in the baikal region of the former soviet union and renamed to dicrocoelium chinensis sudarikov and ryjikov, 1951 tang and tang, 1978 was isolated from other species of. Infinite experiences in alicante, caceres, cordoba, granada, madrid, majorca, salamanca, seville and valencia. The objective of the study was to determine the prevalence and the distribution of gastrointestinal parasites of bile and faeces of cattle and sheep slaughtered at the gombe abattoir, using bile sedimentation, faecal sedimentation and faecal floatation techniques. Digenea, which live in the hepatic bile ducts and gallbladder of domestic and wild ruminants. Bile samples were centrifuged at 1500 rpm for ten 10 minutes in a centrifuge machine and viewed microscopically to check for f. A genus of trematode liver flukes of the family dicrocoeliidae which includes the species dendriticum and hospes. Dicrocoelium hospes looss, 1907 digenea, dicrocoeliidae. The essential reference for selecting, using, and interpreting methods and results related to human parasitic infections this major work by lynne garcia, a recognized authority on diagnostic parasitology, has been completely updated to include the dramatic changes that have occurred in the field of diagnostic medical parasitology over the past decade. Another species, d hospes, is common in west africa. Dicrocoelium species have been detected in humans in ghana before.
Embryonated eggs containing miracidia are shed in feces of definitive hosts, which are typically ruminants. This crosssectional study aimed to determine the prevalence of liver fluke egg infection in white fulani cattle slaughtered in wukari cattle market abattoir in wukari, taraba state. Prevalence of dicrocoelium hospes and fasciola gigantica infections in cattle at slaughter in zaria, nigeria. The trematode dicrocoelium dendriticum, the lanceolate fluke or lancet fluke, is a common parasite of ruminants but humans can be accidental definitive hosts. Mapes published a series of papers from 19511953 detailing their observations and experiments. The 28s region and the second internal transcribed spacer its2 plus flanking 5. Nov 21, 2017 the african liver fluke, dicrocoelium hospes class trematoda, enters the ants antennal lobes, and the congeneric species, d. This work describes the first ultrastructural results on spermiogenesis and on the mature spermatozoon of dicrocoelium hospes trematoda, digenea collected in bos indicus from senegal africa. Dicrocoeliasis is caused by digenean trematode of dicrocoelium dendriticum, small liver fluke, a hepatic parasitic disease in ruminants and human, throughout the world. Liver fluke is a collective name of a polyphyletic group of parasitic trematodes under the phylum platyhelminthes. Dicrocoeliosis article about dicrocoeliosis by the free.
In both cases, the ants ascend vegetation where they are eaten by ruminants, allowing the parasite to reproduce. Mar 17, 2005 read dicrocoelium hospes looss, 1907 digenea, dicrocoeliidae. More recently, a crosssectional survey of young children in kumasi conducted to evaluate the etiology of anemia detected 2. A total of 262 gallbladders were collected and their contents were analyzed for the. Prevalence of dicrocoelium dendriticum ova in ghanaian school. The trematode dicrocoelium dendriticum, the lanceolate fluke or lancet fluke. Camponotus compressiscapus andre hymenoptera, formicidae an. It occurs in the biliary passages or liver of many vertebrates including man. Detection of dicrocoelium dendriticum larval stages in mollusc and ant intermediate hosts by pcr, using mitochondrial and ribosomal internal transcribed spacer its2 sequences volume 8 issue 14 a. The prevalence and intensity rate of dicrocoelium dendriticum. Determination of ribosomal internal transcribed spacer 2. The species dicrocoelium dentriticum lancet fluke is rarely found in humans but is an. These larvae cause behavioral changes, which increase their chance of being ingested by final hosts. David harrington, poppy h l lamberton, alastair mcgregor.
Dicrocoelium dikroseleum, a genus of digenetic trematodes inhabiting the bile ducts and gallbladder of herbivores. According to the last reference the incidences in sheep and goats are lower. Dicrocoelium dendriticum is one of the digenean trematodes that primarily live in bile ducts of a wide range of herbivorous as final hosts. Characterization of the 28s and the second internal. Prevalence of dicrocoelium dendriticum ova in ghanaian. This is similar to results reported in nigeria, ghana and tanzania where they were 60%, 58. Department of biological sciences, university of lagos, lagos, nigeria received october 10. In some lowincome regions, a combination of ecological, agricultural, and culinary factors leads to a very high prevalence of infection but, in. Isolates of dicrocoelium dendriticum n 150 from sheep and cattle bred in southern italy and isolates n 5 of d. Eds recent german research on problems of parasitology, animal health and. Hosted by the usgs core science analytics and synthesis. Page designed through the cooperative efforts of interagency itis teams. Bile and faeces were collected from a total of 412 cattle and 390 sheep. Faecal and blood samples were obtained from the cattle.
Dicrocoelium synonyms, dicrocoelium pronunciation, dicrocoelium translation, english dictionary definition of dicrocoelium. In humans it is generally not fatal, unless infections of the liver are very severe. The intermediate hosts are mainly mollusks but occasionally ants. Hospes hotels infinite places spain official website. Dicrocoelium dendriticum along with dicrocoelium hospes are part of a group of flukes that can infect. Merck veterinary manual the lancet liver fluke dicrocoelium. Dicrocoelium afecta al ganado bovino, ovino, caprino y porcino y a muchos otros rumiantes asi como muy ocasionalmente a perros y gatos y otros carnivoros. Dicrocoelium dendriticum along with dicrocoelium hospes are part of a group of trematodes that can infect the bile ducts of humans.
Liver lesions due to dicrocoeliosis, such as abscesses, granulomas and fibrosis, as well as bile duct proliferation have also been described in the new world camelids llamas and alpacas 2. Liver fluke eggs are passed in the bile and feces and hatch in 23 weeks to form the free swimming miracidia. Dicrocoelium article about dicrocoelium by the free. Instead of the cilia, external sense organs, and epidermis of the free living flatworms, adult flukes have sucking disks with which they cling to their hosts and an external cuticle that resists digestion click the link for more information.
Morphologic differences of the freed larvae could not. Dicrocoeliosis is a disease caused by several species of the genus dicrocoelium dujardin, 1845 trematoda. Infection experiments showed that the african antcamponotus compressiscapus can serve as a second intermediate host ofdicrocoelium hospes. In these organs, they produce pathological lesions leading to parasitic diseases.
Fasciola hepatica and associated parasite, dicrocoelium. In some lowincome regions, a combination of ecological, agricultural, and culinary factors leads to a very high prevalence of infection but, in higherincome regions, infections are uncommon. The thin undulated anterior cytoplasm expansion has already been observed in several digenean spermatozoa. The duodenal biopsy samples were normal and an abdominal ultrasonography showed no biliary or hepatic abnormality. Looking for online definition of dicrocoelium hospes in the medical dictionary. The african liver fluke, dicrocoelium hospes class trematoda, enters the ants antennal lobes, and the congeneric species, d. Dicrocoeliasis is a zoonotic infection of herbivorous mammals such as cattle, sheep, rabbits and goats caused by dicrocoelium dendriticum lancetliver fluke or dicrocoelium hospes with widespread distribution in europe, asia, north america and africa. Eds recent german research on problems of parasitology, animal health and animal breeding in the tropics and subtropics. This small and slender parasitic organism causes dicrocoeliosis, which is most commonly found in ruminants, such as cows or sheep, in europe and the middle east. They are principally parasites of the liver of various mammals, including humans.
All structured data from the file and property namespaces is available under the creative commons cc0 license. However, humans, carnivores and rodents can be infected with the small liver trematode meshgi et al. Pdf dicrocoelium hospes looss, 1907 digenea, dicrocoeliidae. The possible snail intermediate hosts of dicrocoelium hospes in nigeria. The helminth develops with the participation of intermediate hosts, land mollusks, and second. Composite samples were collected from three hundred and eighty nine 389 cattle and 398 sheep. Distinct distribution of dicrocoelium dendriticum and d. As pseudoparasitosis can result from eating raw, infected animal liver, the patient was given a liver free diet for three days, to rule out that possibility. Much of what is presently known about dicrocoelium dendriticum is the result of the work of the naturalist wendell krull. Dicrocoelium dendriticum, the lancet liver fluke, is a parasite fluke that tends to live in cattle or. Dicrocoelium dendriticum iranian journal of veterinary medicine.
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