Helminthologia最新文献

{"title":"Description of <i>Pseudobenedeniella johnstoni</i> sp. n. (Monogenea: Capsalidae) from the gills of Antarctic black rockcod, <i>Notothenia coriiceps</i> Richardson in coastal waters of West Antarctica.","authors":"N Y Rubtsova, A Chaudhary, S Glotov, T A Kuzmina","doi":"10.2478/helm-2024-0037","DOIUrl":"10.2478/helm-2024-0037","url":null,"abstract":"<p><p>Morphological and metrical analyses of monogeneans from the gills of Antarctic rockcod <i>Notothenia coriiceps</i> revealed the presence of a new species, <i>Pseudobenedeniella johnstoni</i> sp. n. Fresh specimens of monogeneans collected from <i>N. coriiceps</i> from the vicinity of Galindez Island, Argentine Islands, West Antarctica were examined morphologically, by molecular analysis and Energy Dispersive X-ray analysis (EDXA). The new species differs from <i>Pseudobenedeniella branchialis</i> Timofeeva, Gaevskaya, Kovaljova, 1987 by the different shapes of anterior and posterior hamuli, the presence of a pronounced sickle-shaped blade of the anterior hamulus and its characteristic wide (wing-like) shaft, serrated on one side, smaller posterior hamulus with a distinct short and broad shaft that widens and is serrated distally, more extensive dimensions of the penis and its pear-like shape, smaller vagina diameter, ovoid egg shape with more pointed anterior pole and blunt posterior pole and long coiled filament as well as different type species of the host in a geographically distant type locality. Genetic data accompanied the description, and phylogenetic analyses inferred that the new species clustered with monogenean species positioned under the family Capsalidae. Molecular data were generated for the 18S and 28S genes of the ribosomal RNA of <i>P. johnstoni</i> sp. n. to provide the first molecular analysis for <i>Pseudobenedeniella</i> species. EDXA for a species of <i>Pseudobenedeniella</i> was offered for the first time.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 4","pages":"327-344"},"PeriodicalIF":1.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11846153/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intestinal parasitic infection with special reference to taeniid tapeworms in school children of Malakand region, Pakistan.","authors":"H U Rahman, N Rafiq, W Khan, P De Los Ríos Escalante, M A Aldamigh","doi":"10.2478/helm-2024-0039","DOIUrl":"10.2478/helm-2024-0039","url":null,"abstract":"<p><p>Diseases caused by intestinal parasites impose a substantial burden on the population of middle-income countries, including Pakistan. This research aimed to assess the risk factors for intestinal parasites in Malakand, Pakistan, school children. Three hundred sixty stool samples were collected from school children, of which 140 (39 %) tested positive for helminth, including taenids. The wet mount preparation in saline/iodine/methods was used for stool examination. The GraphPad Prism of version 5 was used to analyze the data, and the P value was considered significant when it was less than 0.05 % (at 95 % CI). Males were more infected at 40.7 % compared to female students at 33.3 %. (P>0.005 at 95 % CI). Among the helminth <i>Ascaris lumbricoides</i> was the most prevalent 30.71 % (n=43), taeniid species 22.85 % (n=32), Hookworms12.14 % (n=17), <i>Hymenolepis nana</i> 10 % (n=14), <i>Enterobius vermicularis</i> 7.85 % (n=1), <i>Hymenolupis diminuta</i> 6.42 % (n=9), and <i>Trichuris trichiura</i> 5.71 % (n=8) were reported. Age-wise prevalence was noted as the students aged 11 to 13 years were highly infected at 57.4 %, followed by 8 to 10 years at 48.8 %, while the least prevalence was noted in the age 5 to 7 years at 45.5 %. (P>0.005 at 95 % CI). Regarding the association of intestinal parasitic infection and nutritional status of the students, 53.0 % had 10 to 11 inches in diameter upper arm circumference, and 49.4 % had 8 to 9 inches in upper arm circumference (P>0.05). Information on the students' locality and intestinal parasitic infection shows that students in rural areas were more infected, 54.1 %, compared to urban areas, 41.1 % (P value is 0.023 at 95 % CI). Based on the pattern of infection, 19.44 % (n=70/360) were single, 10.5 % (n=38/360) double, 6.11 % (n=22/360), and 2.77 % (n=10/360) quadruple infections had been recorded. The symptoms were abdominal pain, constipation, nausea or vomiting, stomach pain, blotting, and Diarrhea appearing after the taeniid infection. We conclude that since deworming is insufficient to control parasitic illnesses, there is a need for widespread campaigns to raise awareness about children's health and hygiene, as well as the necessity for the creation of efficient poverty control programs.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 4","pages":"286-292"},"PeriodicalIF":1.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11846145/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dirofilariasis of the scrotum: a clinical case from Bulgaria.","authors":"G Popova, D Vuchev, D Markov, E Poryazova","doi":"10.2478/helm-2024-0032","DOIUrl":"10.2478/helm-2024-0032","url":null,"abstract":"<p><p>Dirofilariasis is a zoonotic infection that humans acquire by the bite of infected mosquitoes. The male reproductive system is relatively rare affected by this disease. We presented a case of dirofilariasis of the scrotum from Bulgaria. The patient noticed a small painless nodule in his scrotum with no other pathological findings. The tumor-like lesion was surgically removed. Dirofilariasis was not suspected before this procedure, but the diagnosis was made on histological examination of the extracted tissue. Surgical removal of the helminth is the radical treatment of this disease. Dirofilariasis of the scrotum has a good prognosis as patients fully recover after the extraction of the parasite.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 4","pages":"357-359"},"PeriodicalIF":1.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11846148/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological identification of hookworm species in five regions of Cameroon.","authors":"C N Dongmo, H B Jatsa, L-A Tchuem Tchuente","doi":"10.2478/helm-2024-0025","DOIUrl":"10.2478/helm-2024-0025","url":null,"abstract":"<p><p>Infections with hookworms (<i>Necator americanus</i> and <i>Ancylostoma duodenale</i>) remain a major public health problem in low- and middle-income countries. However, the information about the distribution of each species is inaccurate in many countries since their traditional diagnosis is based only on the identification of eggs in stool under a microscope. We aimed to identify the prevalence of hookworm species using morphological stools to identify L3 larvae to gain insights into the distribution of both species in five regions of Cameroon. Samples were collected from schoolchildren in five regions and 34 subdivisions of Cameroon and examined using the Kato-Katz method. We randomly selected a total of 157 samples among hookworm's positive stool samples. They were cultured using the Harada-Mori test-tube technique. The morphological identification of a total of 8063 isolated hookworm filariform larvae L3 was conducted following established criteria. The sensitivity rate to the Harada-Mori technique was 58 %. Among the 8063 L3 larvae identified during this study, 230 (2.95 %) of L3 larvae were identified as <i>A. duodenale</i>, and 7833 (97.15 %) of L3 larvae were identified as <i>N. americanus</i>. <i>A. duodenale</i> was observed only in the Mouanko subdivision in the Littoral region. The complementary use of the Kato Katz and the Harada-Mori culture techniques to screen hookworm infections contributes to the differentiation of <i>N. americanus</i> and <i>A. duodenale</i> as the two hookworm species in Cameroon. An extended molecular study in the localities where only <i>N. americanus</i> has been identified is necessary to reach more conclusions on the distribution of hookworm species in Cameroon.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 3","pages":"224-231"},"PeriodicalIF":1.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11637546/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diversity of gastrointestinal parasites of turkeys (<i>Meleagris gallopavo</i>) under different housing systems in Bessarabia, Ukraine.","authors":"M Bogach, P Liulin, D Bohach, A Rachynskyi","doi":"10.2478/helm-2024-0029","DOIUrl":"10.2478/helm-2024-0029","url":null,"abstract":"<p><p>The development of turkey farming is significantly restrained by parasitic diseases, which have become widespread and cause significant economic losses to specialized- and homestead farms. This study aimed to determine the prevalence of endoparasites in turkeys of different age groups under different maintenance systems and the nature of patho-anatomical changes depending on the course of the disease. A total of 1,869 samples of fecal from turkeys were studied. From turkeys kept in poultry houses, 925 fecal samples and 944 fecal samples from free-range turkeys were examined. In turkeys that were kept in a poultry house, the total infection with endoparasites was 59.8 %, while in free range, it was 63.3 %. The most common in turkeys 30-60 days old from poultry houses are <i>Histomonas meleagridis</i> (21.5 %), <i>Eimeria</i> spp. (11.5 %) and <i>Cryptosporidium baileyi</i> (15.5 %) and in free-range turkeys - <i>Histomonas meleagridis</i> (15.6 %), <i>Eimeria</i> spp. (7.2 %) and <i>Cryptosporidium baileyi</i> (10.8 %). <i>Cryptosporidium baileyi</i> was not observed in turkeys 360 days old or older. <i>Tetratrichomonas gallinarum</i> was most frequently recorded in turkeys 90 - 120 days old from poultry houses (3.8 %) and turkeys 150 - 180 days old in free range (3.7 %). <i>Ascaridia dissimilis</i> is most common in free-range turkeys 90 - 120 days old (11.8 %) and turkeys 150 - 180 days old from poultry houses (9.5 %). <i>Heterakis gallinarum</i> was primarily recorded in turkeys 150 - 180 days old under both systems of keeping with a value range from 16.2 to 17.2 %. Infestation of 150 - 180-day-old free-range turkeys by cestodes <i>Davainea meleagridis</i> and <i>Raillietina echinobothrida</i> was 15.0 % and 12.9 %, respectively. Thus, the diversity and prevalence of gastrointestinal tract invasions depend on the age and housing system of the poultry.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 3","pages":"244-253"},"PeriodicalIF":1.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11637543/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case study of soil nematode populations under intensive cucumber monoculture in Hungary.","authors":"R Petrikovszki, A Gódor, P I Nagy, D Selmeczi, B Simon, F Tóth","doi":"10.2478/helm-2024-0026","DOIUrl":"10.2478/helm-2024-0026","url":null,"abstract":"<p><p>A 25-year-old intensive monoculture of cucumber (<i>Cucumis sativus</i> 'Monolit F1') has been chosen for monitoring the effect of continuous fertilization, drip irrigation and various soil disinfection on free-living nematodes in soil. Densities, relative abundance of nematode genera, trophic groups and c-p classes, in addition, numerous nematological indices were determined besides certain soil properties. Concerning the nematological indices, all the values proved a stressed, depleted and unstable environment with degraded food web condition. The exaggerated application of fertilizers through irrigation caused high salinity values (0.62 %) which is much higher than the indicated toxicity threshold (0.4 %) for cultivated plants. The number of individuals of the bacterivore <i>Acrobeloides</i> and <i>Cuticularia</i> genera, which have a very high stress tolerance, was outstanding in the area. Besides juveniles, the appearance of <i>Meloidogyne incognita</i> males was also recorded which could lead to a change in the genetic composition of the population to adapt to environmental stressors. All these changes may result from salt stress indicated by intensive drip irrigation and the use of artificial fertilizers.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 3","pages":"272-276"},"PeriodicalIF":1.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11637544/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence of intestinal parasites in Erbil, Iraq.","authors":"K Chalabi","doi":"10.2478/helm-2024-0022","DOIUrl":"10.2478/helm-2024-0022","url":null,"abstract":"<p><strong>Background: </strong>Infections with intestinal parasites are the major cause of infectious disease globally and have been described as a public health issue in developing countries.</p><p><strong>Objective: </strong>This study aimed to determine prevalence of intestinal parasitic infections and their associated factors among the population of Erbil province in Iraq over the period 2011-2021.</p><p><strong>Methods: </strong>The results of 614455 stool examinations of all public health facilities of the province were collected from the register in the directorate of preventive health affairs and the data were analyzed.</p><p><strong>Result: </strong>The overall prevalence of intestinal parasitic infections was 4.24 % in the province. The total number of reported cases of intestinal parasites decreased from 4352 for 2011 to 1728 for 2018 and then increased to 2014 cases for 2021. Nearly half of the intestinal parasitic infections were detected among age group of 15 to 44 years. The prevalence of intestinal parasitic infections was higher in males (65.73 %) than females (34.27 %). The prevalence of intestinal parasitic infections was 9 0.47 % for protozoan infections, while the rate of helminth infection was lower (9 .53 %). <i>Entamoeba histolytica/dispar</i> were the most common parasite (60.92 %) followed by <i>Giardia lamblia</i> (29.54 %) and <i>Enterobius vermicularis</i> (8.56 %). Prevalence of infection with intestinal parasites was lowest in March and highest in February.</p><p><strong>Conclusion: </strong>In spite of that intestinal parasitic infection rates appear to be decreasing, intestinal parasitic infection remains an important health problem in the province. Therefore, there is still a need for prevention efforts in the community.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 3","pages":"214-223"},"PeriodicalIF":1.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11637541/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jozef Kazimír Macko, a distinguished Slovak parasitologist, has passed away.","authors":"Vladimíra Hanzelová","doi":"10.2478/helm-2024-0030","DOIUrl":"https://doi.org/10.2478/helm-2024-0030","url":null,"abstract":"","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 3","pages":"205-206"},"PeriodicalIF":1.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11637539/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of entomopathogenic nematodes present in Việt Nam against brown marmorated stink bug (<i>Halyomorpha halys</i>) under laboratory conditions.","authors":"H T Dao Thi, H T Nguyen, G A C Beattie, P Holford, P Q Trinh, P T Bui, H T T Tran, V D Nguyen, H N Le, H S Phung","doi":"10.2478/helm-2024-0021","DOIUrl":"10.2478/helm-2024-0021","url":null,"abstract":"<p><p>The brown marmorated stink bug (<i>Halyomorpha halys</i>), a native of Asia, has become an invasive pest in North America and Europe. Given the severity of <i>H. halys</i> and the need for better and environmentally-friendly control methods for this pest, we evaluated the virulence four entomopathogenic nematode species (<i>Heterorhabditis indica</i>, <i>Oscheius myriophilus, Steinernema eapokense</i> and <i>Steinernema pakistanense</i>) that occur naturally in soils in southern Việt Nam and compared them with that of a commercially available strain of <i>S. carpocapsae</i>. We report for the first time the pathogenicity of <i>Oscheius myriophilus</i> towards BMSB. The commercial strain of <i>S. carpocapsae</i> was most virulent against BMSB. However, the strain of <i>S. pakistanense</i> isolated from soil in southern Việt Nam has potential for the biological control of this pest. To achieve this potential, further work is needed including evaluation in the field and with the formulation of the nematode inoculum.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 3","pages":"263-271"},"PeriodicalIF":1.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11637542/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A contribution on first report of morphogenetic characterization of <i>Anisakis typica</i> parasitizing Indian sand whiting, <i>Sillago sihama</i> from Central west coast of India.","authors":"A Yadav, N Jaiswal, S K Malhotra","doi":"10.2478/helm-2024-0027","DOIUrl":"10.2478/helm-2024-0027","url":null,"abstract":"<p><p>The search for hitherto undiscovered larvae of <i>Anisakis</i> sp. from marine habitat in the Indian sub-continent yielded <i>A. typica</i> (Dujardin) larvae hitherto unconfirmed. The present study is the maiden attempt to report 3^rd stage larvae of <i>A. typica</i> from the reef-associated <i>Sillago sihama</i> in Arabian Sea off the coast of Goa, which has been identified recently as reef-populated area within the maritime boundary of India. The morphometry of 3^rd stage larvae has been presented with a record of molecular characterization. In the context of current study, the natural prevalence of <i>A. typica</i> larvae in marine piscine hosts of Arabian Sea in India was 6.84 % and of co-occurring <i>Rotundocollarette capoori</i> (Yadav, Kapoor and Malhotra) in the same fish was 13.65 %. The roundworms were confirmed to be <i>A. typica</i> by application of the molecular and genetic characterization based on ITS1, ITS2 and 18S rDNA sequence analysis. The infestation of reef-associated fishes in this study by anisakid worms study provided an opportunity to explore mechanism of ecological associations of coral reefs with parasitization in future.</p>","PeriodicalId":55061,"journal":{"name":"Helminthologia","volume":"61 3","pages":"232-243"},"PeriodicalIF":1.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11637545/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}