The Experts below are selected from a list of 204 Experts worldwide ranked by ideXlab platform
Carlos Hermosilla - One of the best experts on this subject based on the ideXlab platform.
-
Occurrence of health-compromising protozoan and helminth infections in tortoises kept as pet animals in Germany
Parasites & Vectors, 2018Co-Authors: Malek J. Hallinger, Anja Taubert, Carlos Hermosilla, Frank MutschmannAbstract:Background Exotic reptiles such as tortoises, have become increasingly common domestic pets worldwide and are known to host different gastrointestinal parasites. Some of these parasites bear zoonotic potential. In the present survey, we parasitologically examined tortoise faecal samples ( n = 1005) from 19 different species held as pets in private German households and German zoological gardens. Methods Saline faecal smears were used to generate prevalence data for potentially health-compromising gastrointestinal parasites. In addition, we performed complete parasitological dissections of dead tortoises ( n = 49) to estimate endoparasite burdens precisely. Results Analysed tortoise faecal samples contained a broad spectrum of endoparasites. We detected ten taxa of endoparasites; oxyurid nematodes (e.g. Tachygonetria spp.) were the most prevalent parasites in faecal samples (43.18%), followed by ascarids ( Angusticaecum spp.) (0.01%), Hexamita spp. (0.007%), Balantidium spp. (0.007%), trichomonads (0.004%), Strongyloides spp. (0.003%), Entamoeba spp. (0.005%), Hartmanella spp. (0.001%), Blastocystis spp. (0.002%) , heterakids (0.001%) and Trimitus spp. (0.001%) . Additionally, we investigated dead tortoise individuals ( n = 49; of 10 different species) for aetiological diagnosis and estimation of endoparasite burden. Of these individuals, 38 (77.6%) were infected with parasites and 14 (28.6%) of them died most probably due to severe parasitic infection. Oxyurid infections correlated positively with calcium deficiency and metabolic bone disease (MBD) as well as nephrosis/nephritis, mainly occurring in juvenile tortoises (< 5 years of age). Conclusions The saline faecal smear technique proved to be efficient in detecting different metazoan and protozoan parasite stages in tortoise faeces. The prevalence of oxyurid infections was particularly high. In combination with pathological findings in clinical oxyuridosis obtained from necropsied animals, our findings call for further, detailed investigations on pathogenesis and immunology of oxyurids in pet reptiles. Coprological analyses for parasite detection should be mandatory before tortoises are transferred to a new owner, animal group, or public and private enclosures such as zoos. We advocate for regular health screenings in pet tortoises and, if parasitic infections are diagnosed, adequate medication or alternative hygiene management should be considered to improve and maintain individual and population health.
-
Oxyuris equi: lack of efficacy in treatment with macrocyclic lactones.
Veterinary Parasitology, 2014Co-Authors: Denis Wolf, Carlos Hermosilla, Anja TaubertAbstract:Whilst anthelminthic resistance of small strongyles is well documented, anthelmintic failures against infections with Oxyuris equi have scarcely been published so far. We describe two cases of equine oxyurosis and the anthelminthic failure of macrocyclic lactones (moxidectin, ivermectin) resulting in persistent O. equi infections with continuous egg shedding. The horses were kept in two different herds in the federal state of Hessia, Germany. Herd A kept two geldings: an 8-year-old Welsh-Cob-Mix and a 7-year-old Haflinger. Herd B was composed of four animals: 2 Connemara-mares, 31 and 19 years old, one 18-year-old Connemara-gelding and a 27-year-old Norwegian Fjord mare. All animals had a case history of various anthelmintic treatments with macrocyclic lactones (moxidectin and ivermectin alternating irregulary) in 2010 and 2011, nonetheless, they continued to shed O. equi nematodes and eggs. Animals were treated anew with moxidectin by members of the institute and were continuously monitored on a daily base by adhesive tape samples. Follow-up examinations for the reappearance of eggs were performed for 30 days in Herd A and 57 days in Herd B. In total, recurrence of O. equi egg shedding was detected in three out of six horses within 1–4 weeks after treatment. In both herds accompanying horses sharing the same stable and paddock remained negative for detection of O. equi-eggs or worms throughout the whole observation period. This is the first report in Europe showing inefficacy of commercial ivermectin compounds and furthermore the first report at all documenting ineffectiveness of moxidectin compounds in the treatment of O. equi-infections in horses indicating a possible development of resistance or confirming an existing incomplete oxyuricidal efficacy.
M. P. Yadav - One of the best experts on this subject based on the ideXlab platform.
-
Incidence of gastrointestinal parasites in organized and unorganized equid farms of Haryana
Indian Journal of Animal Sciences, 1998Co-Authors: P. P. Sengupta, M. P. YadavAbstract:The pattern of the incidence of parasites in organized and unorganized equine practices was assessed by faecal and blood examination. The infection rate was more in unorganized husbandry than the organized one. In both the cases, Strongylus sp. was the major parasitic infection with highest incidence of 57.81 % in unorganized sector. Coproculture revealed S. equinus. S.edentatus. S.vulgaris. Tridontophorus sp ., Oesophagodontus sp. and Gyalocephalus sp. larva. Trichonema sp. (15.63%). Paramphistomes sp.(7.81 %), Trichostrongylus sp.( 6.25%), Parascaris equorum (3.54%). Oxyuris equi (2.83% and 0.78%), Anoplocephala sp. (2.12%) and Eimeria leuckerti ( 1.41 %) infections were also recorded.
-
Occurrence of parasitic infections in ponies of tarai region, Uttar Pradesh
Indian Journal of Animal Sciences, 1997Co-Authors: P. P. Sengupta, M. P. YadavAbstract:A study of seasonal incidence of parasites in pony mares in tarai area of Uttar Pradesh was carried out. No deworming practice was reported before this study. The animals were maintained on pasture grazing. The amplitude of the parasitic infeCtion was studied by faecal samples and blood. smear examination. During the study period, Strongylus sp. dominated in the rate of infection with highest of 64.52% in winter followed by Gastrodiscus aegyptiacus with 30.90% in summer and Trichonema sp. with 17.74% in winter. Besides, Trichostrongylus, Strongyloides westeri, Dictyocaulus arnfieldi, Parascaris equorum and Oxyuris equi were also recorded. Coproculture revealed Strongylus equinus, S. edentatus, S. vulgaris,Gyalocephalus, Triodontophorus and Oesophagodontus sp. larva.
Valter Stefani - One of the best experts on this subject based on the ideXlab platform.
-
the use of epifluorescence microscopy and fluorescent dyes for visualization of Oxyuris equi eggs
Veterinary Parasitology, 2016Co-Authors: Helio L Barros, Sandra Marcia Tietz Marques, Valter StefaniAbstract:This study presents a new method for visualization of Oxyuris equi eggs collected by means of a clear adhesive tape applied to the perianal region of horses. The obtained results indicate that this protocol permits a quick, easy, clear and selective visualization of Oxyuris equi eggs even in the presence of feces and other material. Another advantage of this method is that it can be used with fluorescent dyes solubilized in water, which will stain biologic material without dissolving or altering the adhesive tape and is also environmentally safe. Other dyes currently used for staining biologic materials use organic solvents, which may be combined with acids or bases in their formulation, preventing their use with the tape method.
Anja Taubert - One of the best experts on this subject based on the ideXlab platform.
-
Occurrence of health-compromising protozoan and helminth infections in tortoises kept as pet animals in Germany
Parasites & Vectors, 2018Co-Authors: Malek J. Hallinger, Anja Taubert, Carlos Hermosilla, Frank MutschmannAbstract:Background Exotic reptiles such as tortoises, have become increasingly common domestic pets worldwide and are known to host different gastrointestinal parasites. Some of these parasites bear zoonotic potential. In the present survey, we parasitologically examined tortoise faecal samples ( n = 1005) from 19 different species held as pets in private German households and German zoological gardens. Methods Saline faecal smears were used to generate prevalence data for potentially health-compromising gastrointestinal parasites. In addition, we performed complete parasitological dissections of dead tortoises ( n = 49) to estimate endoparasite burdens precisely. Results Analysed tortoise faecal samples contained a broad spectrum of endoparasites. We detected ten taxa of endoparasites; oxyurid nematodes (e.g. Tachygonetria spp.) were the most prevalent parasites in faecal samples (43.18%), followed by ascarids ( Angusticaecum spp.) (0.01%), Hexamita spp. (0.007%), Balantidium spp. (0.007%), trichomonads (0.004%), Strongyloides spp. (0.003%), Entamoeba spp. (0.005%), Hartmanella spp. (0.001%), Blastocystis spp. (0.002%) , heterakids (0.001%) and Trimitus spp. (0.001%) . Additionally, we investigated dead tortoise individuals ( n = 49; of 10 different species) for aetiological diagnosis and estimation of endoparasite burden. Of these individuals, 38 (77.6%) were infected with parasites and 14 (28.6%) of them died most probably due to severe parasitic infection. Oxyurid infections correlated positively with calcium deficiency and metabolic bone disease (MBD) as well as nephrosis/nephritis, mainly occurring in juvenile tortoises (< 5 years of age). Conclusions The saline faecal smear technique proved to be efficient in detecting different metazoan and protozoan parasite stages in tortoise faeces. The prevalence of oxyurid infections was particularly high. In combination with pathological findings in clinical oxyuridosis obtained from necropsied animals, our findings call for further, detailed investigations on pathogenesis and immunology of oxyurids in pet reptiles. Coprological analyses for parasite detection should be mandatory before tortoises are transferred to a new owner, animal group, or public and private enclosures such as zoos. We advocate for regular health screenings in pet tortoises and, if parasitic infections are diagnosed, adequate medication or alternative hygiene management should be considered to improve and maintain individual and population health.
-
Oxyuris equi: lack of efficacy in treatment with macrocyclic lactones.
Veterinary Parasitology, 2014Co-Authors: Denis Wolf, Carlos Hermosilla, Anja TaubertAbstract:Whilst anthelminthic resistance of small strongyles is well documented, anthelmintic failures against infections with Oxyuris equi have scarcely been published so far. We describe two cases of equine oxyurosis and the anthelminthic failure of macrocyclic lactones (moxidectin, ivermectin) resulting in persistent O. equi infections with continuous egg shedding. The horses were kept in two different herds in the federal state of Hessia, Germany. Herd A kept two geldings: an 8-year-old Welsh-Cob-Mix and a 7-year-old Haflinger. Herd B was composed of four animals: 2 Connemara-mares, 31 and 19 years old, one 18-year-old Connemara-gelding and a 27-year-old Norwegian Fjord mare. All animals had a case history of various anthelmintic treatments with macrocyclic lactones (moxidectin and ivermectin alternating irregulary) in 2010 and 2011, nonetheless, they continued to shed O. equi nematodes and eggs. Animals were treated anew with moxidectin by members of the institute and were continuously monitored on a daily base by adhesive tape samples. Follow-up examinations for the reappearance of eggs were performed for 30 days in Herd A and 57 days in Herd B. In total, recurrence of O. equi egg shedding was detected in three out of six horses within 1–4 weeks after treatment. In both herds accompanying horses sharing the same stable and paddock remained negative for detection of O. equi-eggs or worms throughout the whole observation period. This is the first report in Europe showing inefficacy of commercial ivermectin compounds and furthermore the first report at all documenting ineffectiveness of moxidectin compounds in the treatment of O. equi-infections in horses indicating a possible development of resistance or confirming an existing incomplete oxyuricidal efficacy.
P. P. Sengupta - One of the best experts on this subject based on the ideXlab platform.
-
Incidence of gastrointestinal parasites in organized and unorganized equid farms of Haryana
Indian Journal of Animal Sciences, 1998Co-Authors: P. P. Sengupta, M. P. YadavAbstract:The pattern of the incidence of parasites in organized and unorganized equine practices was assessed by faecal and blood examination. The infection rate was more in unorganized husbandry than the organized one. In both the cases, Strongylus sp. was the major parasitic infection with highest incidence of 57.81 % in unorganized sector. Coproculture revealed S. equinus. S.edentatus. S.vulgaris. Tridontophorus sp ., Oesophagodontus sp. and Gyalocephalus sp. larva. Trichonema sp. (15.63%). Paramphistomes sp.(7.81 %), Trichostrongylus sp.( 6.25%), Parascaris equorum (3.54%). Oxyuris equi (2.83% and 0.78%), Anoplocephala sp. (2.12%) and Eimeria leuckerti ( 1.41 %) infections were also recorded.
-
Occurrence of parasitic infections in ponies of tarai region, Uttar Pradesh
Indian Journal of Animal Sciences, 1997Co-Authors: P. P. Sengupta, M. P. YadavAbstract:A study of seasonal incidence of parasites in pony mares in tarai area of Uttar Pradesh was carried out. No deworming practice was reported before this study. The animals were maintained on pasture grazing. The amplitude of the parasitic infeCtion was studied by faecal samples and blood. smear examination. During the study period, Strongylus sp. dominated in the rate of infection with highest of 64.52% in winter followed by Gastrodiscus aegyptiacus with 30.90% in summer and Trichonema sp. with 17.74% in winter. Besides, Trichostrongylus, Strongyloides westeri, Dictyocaulus arnfieldi, Parascaris equorum and Oxyuris equi were also recorded. Coproculture revealed Strongylus equinus, S. edentatus, S. vulgaris,Gyalocephalus, Triodontophorus and Oesophagodontus sp. larva.
