The possible snail intermediate hosts of dicrocoelium hospes in nigeria. Threedimensional visualization and a deeplearning model. Infection experiments showed that the african antcamponotus compressiscapus can serve as a second intermediate host ofdicrocoelium hospes. The helminth develops with the participation of intermediate hosts, land mollusks, and second.
Liver fluke eggs are passed in the bile and feces and hatch in 23 weeks to form the free swimming miracidia. Fasciola, fascioloides, and dicrocoelium cause liver fluke diseases in ruminants and are of zoonotic and economic importance. Prevalence of liver flukes in cattle, and small ruminants. Looking for online definition of dicrocoelium hospes in the medical dictionary. Much of what is presently known about dicrocoelium dendriticum is the result of the work of the naturalist wendell krull.
The duodenal biopsy samples were normal and an abdominal ultrasonography showed no biliary or hepatic abnormality. Eds recent german research on problems of parasitology, animal health and. Hosted by the usgs core science analytics and synthesis. 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. Dicrocoelium dendriticum along with dicrocoelium hospes are part of a group of flukes that can infect. A taxonomic species within the family dicrocoeliidae further reading. Isolates of dicrocoelium dendriticum n 150 from sheep and cattle bred in southern italy and isolates n 5 of d.
According to the last reference the incidences in sheep and goats are lower. 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. Distinct distribution of dicrocoelium dendriticum and d. Prevalence of dicrocoelium dendriticum ova in ghanaian. Eds recent german research on problems of parasitology, animal health and animal breeding in the tropics and subtropics. Discussion dicrocoelium hospes and fasciola gigantica were found in the liver of cattle in sierra leone. 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. A total of 262 gallbladders were collected and their contents were analyzed for the. Characterization of the 28s and the second internal. Characterization of the 28s and the second internal transcribed spacer of ribosomal dna of dicrocoelium dendriticum and dicrocoelium hospes. Pdf prevalence of dicrocoelium dendriticum ova in ghanaian. Nov 21, 2017 the african liver fluke, dicrocoelium hospes class trematoda, enters the ants antennal lobes, and the congeneric species, d.
Mar 17, 2005 read dicrocoelium hospes looss, 1907 digenea, dicrocoeliidae. Page designed through the cooperative efforts of interagency itis teams. Text is available under the creative commons attributionsharealike license. Prevalence of dicrocoelium dendriticum ova in ghanaian school. 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. Dicrocoelium definition of dicrocoelium by the free dictionary. In some lowincome regions, a combination of ecological, agricultural, and culinary factors leads to a very high prevalence of infection but, in. Hospes hotels infinite places spain official website. Digenea, which live in the hepatic bile ducts and gallbladder of domestic and wild ruminants. Mapes published a series of papers from 19511953 detailing their observations and experiments. A taxonomic species within the family dicrocoeliidae. Department of biological sciences, university of lagos, lagos, nigeria received october 10. It should be noted that the estimates of prevalence of the human liver flukes are, in most cases, decades old and probably inaccurate.
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. Logistic regression analyses were performed to determine risk factors for infections. They are principally parasites of the liver of various mammals, including humans. Bile samples were centrifuged at 1500 rpm for ten 10 minutes in a centrifuge machine and viewed microscopically to check for f.
Infinite experiences in alicante, caceres, cordoba, granada, madrid, majorca, salamanca, seville and valencia. Field and experimental studies on dicrocoelium dendriticum. Dicrocoelium hospes definition of dicrocoelium hospes by. The thin undulated anterior cytoplasm expansion has already been observed in several digenean spermatozoa. Dicrocoeliasis is caused by digenean trematode of dicrocoelium dendriticum, small liver fluke, a hepatic parasitic disease in ruminants and human, throughout the world. It is divided administratively into zaria and sabon gari lgas and about 4075% of its working population derives their. 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. Most of the cercariae penetrated the cropwall and encysted in the hemocoel, whereas one or more larvae invaded the ants central nervous system. A taxonomic genus within the family dicrocoeliidae certain parasitic liver flukes. Another species, d hospes, is common in west africa.
Read dicrocoelium hospes looss, 1907 digenea, dicrocoeliidae. Pdf dicrocoelium hospes looss, 1907 digenea, dicrocoeliidae. Human infection by dicrocoelium dendriticum, a zoonotic liver fluke, is uncommon. Dicrocoelium dendriticum along with dicrocoelium hospes are part of a group of trematodes that can infect the bile ducts of humans. It occurs in the biliary passages or liver of many vertebrates including man. Any of several parasitic trematode worms that infest the liver of humans and other mammals, especially clonorchis sinensis and several species in the. Dicrocoelium species have been detected in humans in ghana before. Dicrocoelium dendriticum is more commonly known as the lancet liver fluke.
Dicrocoeliosis is a disease caused by several species of the genus dicrocoelium dujardin, 1845 trematoda. Morphologic differences of the freed larvae could not be found, but there were evident differences in number and localization of the cerebral stages. Dicrocoeliosis a helminthic disease of domestic and wild animals rarely of man, caused by the lancet fluke dicrocoelium lanceatum. 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. Dicrocoelium hospes looss, 1907 digenea, dicrocoeliidae. Detection of dicrocoelium dendriticum larval stages in. Liver fluke is a collective name of a polyphyletic group of parasitic trematodes under the phylum platyhelminthes. The aim of the present study was to determine the prevalence and intensity of infection with d. The trematode dicrocoelium dendriticum, the lanceolate fluke or lancet fluke, is a common parasite of ruminants but humans can be accidental definitive hosts. Camponotus compressiscapus andre hymenoptera, formicidae an. It is found in many countries and infects a wide range of definitive hosts, including domestic ruminants.
Determination of ribosomal internal transcribed spacer 2. While relatively rare in humans, the disease is fairly common in grazing mammals throughout the world. Dicrocoelium dendriticum rudolphi, 1819 and dicrocoelium hospes looss, 1907 are recognised to affect the liver of domestic and wild ruminants. Fasciola hepatica is a parasite of clinical and veterinary importance which causes fascioliasis that leads to reduction in milk and meat production. Bile and faeces were collected from a total of 412 cattle and 390 sheep. Effects dicrocoelium dendriticum is not usually considered to cause great problems to infected sheep. Faecal and blood samples were obtained from the cattle. Evaluation of gastrointestinal parasites in bile and. Dicrocoelium dendriticum an overview sciencedirect topics. 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. Composite samples were collected from three hundred and eighty nine 389 cattle and 398 sheep. All structured data from the file and property namespaces is available under the creative commons cc0 license. The african liver fluke, dicrocoelium hospes class trematoda, enters the ants antennal lobes, and the congeneric species, d. Prevalence of dicrocoelium hospes and fasciola gigantica infections in cattle at slaughter in zaria, nigeria.
Dicrocoelium article about dicrocoelium by the free. 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. This is similar to results reported in nigeria, ghana and tanzania where they were 60%, 58. Dicrocoelium dendriticum along with dicrocoelium hospes are part of a group of flukes that can infect the bile ducts of humans. 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. Prevalence of dicrocoelium hospes and fasciola gigantica. Dicrocoeliosis article about dicrocoeliosis by the free. Morphological and molecular differentiation between. Dicrocoelium dendriticum infections occur primarily in the eastern u. Dicrocoelium dikroseleum, a genus of digenetic trematodes inhabiting the bile ducts and gallbladder of herbivores. The trematode dicrocoelium dendriticum, the lanceolate fluke or lancet fluke.
Pdf characterization of the 28s and the second internal. 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. Cerebral larvae in the second intermediate host of dicrocoelium. The effect of sex on seasonal variation in single and double. Because the bodies of these parasites are long and narrow, infections are generally confined to the more distal parts of the bile ducts. Dicrocoeliasis is a disease of the liver caused by the liver flukes, dicrocoelium dendriticum and dicrocoelium hospes. Human dicrocoeliasis presenting as a subcutaneous mass. 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. In these organs, they produce pathological lesions leading to parasitic diseases. Dicrocoelium definition of dicrocoelium by medical dictionary. Slaughterhouse surveys for dicrocoelium hospes infections in cattle have shown prevalences ranging from 23 to 62% in senegal 03255, 03400, and from 17 to 56% in nigeria 07176, 07821. Excellent offers only by booking on our official website. Abstract the speciesspecific ribosomal internal transcribed spacer 2 its2. Capable of moving along the blood circulation, they can occur also in bile ducts, gallbladder, and liver parenchyma.
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. More recently, a crosssectional survey of young children in kumasi conducted to evaluate the etiology of anemia detected 2. Merck veterinary manual the lancet liver fluke dicrocoelium. Dicrocoelium dendriticum has been reported in europe, asia, northern africa and north america, whereas 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.
Dicrocoeliasis definition of dicrocoeliasis by medical. David harrington, poppy h l lamberton, alastair mcgregor. Morphologic differences of the freed larvae could not. The 28s region and the second internal transcribed spacer its2 plus flanking 5. Stool microscopy revealed numerous eggs of dicrocoelium dendriticum. Dicrocoelium dendriticum wikipedia, the free encyclopedia.
The body of the parasite is flat and lancetshaped, 515 mm long, and has pointed ends. The prevalence and intensity rate of dicrocoelium dendriticum. However, humans, carnivores and rodents can be infected with the small liver trematode meshgi et al. Gastrointestinal parasites of cattle and sheep slaughtered.
Dicrocoelium dendriticum, the lancet liver fluke, is a parasite fluke that tends to live in cattle or. The study assessed the prevalence and distribution of gastrointestinal parasites in bile and faeces of cattle and sheep from jos, plateau state, nigeria. In both cases, the ants ascend vegetation where they are eaten by ruminants, allowing the parasite to reproduce. Fasciola hepatica and associated parasite, dicrocoelium. Dicrocoelium dendriticum or dicrocoelium hospes pdf. Pdf the possible snail intermediate hosts of dicrocoelium. The species dicrocoelium dentriticum lancet fluke is rarely found in humans but is an. 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. In humans it is generally not fatal, unless infections of the liver are very severe. 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. However, it is possible for individual sheep to have as many as 50,000 parasites in the liver.
Dicrocoelium dendriticum or dicrocoelium hospes clinical. Dicrocoelium dendriticum is one of the digenean trematodes that primarily live in bile ducts of a wide range of herbivorous as final hosts. A total of 300 bile samples of cattle which included 155 males and 145 females were collected from the. 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 flukes egg infection and associated risk factors in. Dicrocoelium dendriticum in ruminants digestive system. The intermediate hosts are mainly mollusks but occasionally ants. Dicrocoelium synonyms, dicrocoelium pronunciation, dicrocoelium translation, english dictionary definition of dicrocoelium. Bile samples were analysed using sedimentation, while the faeces were subjected to standard floatation and sedimentation techniques. I have seen a number of such cases in expatriates and peace corps volunteers in west africa who submitted stool.
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