Parasitology最新文献_第2页

In cold blood: Screening wild Alaskan moose (Alces alces gigas) for filarial nematode (Filarioidea: Onchocercidae) infections using a deep amplicon sequencing approach. 冷血：使用深度扩增子测序方法筛选野生阿拉斯加驼鹿（Alces Alces gigas）的丝状线虫（丝状总科：盘尾丝虫科）感染。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-20 DOI: 10.1017/S0031182026101991

Matthew R Kulpa, John A Crouse, Daniel P Thompson, Joe L Luksovsky, John C Blazier, John S Gilleard, Guilherme G Verocai

引用次数: 0

Appraising the genetic diversity of Dipylidium caninum: first molecular evidence from Ghana, West Africa, in a global context. 评估犬双星的遗传多样性：来自西非加纳的第一个分子证据，在全球背景下。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-20 DOI: 10.1017/S0031182026102054

Francis Addy, Emmanuel Atarikaki, Sonja Dumendiak, Ebenezer Kofi Nartey, Gideon Adu-Bonsu, Sylvester Rudolf Darko, Kuba Cain Pachala, Bismark Wasiru, Mujahid Mohammed, Emmanuel Dzubi, Frank Yajaboum Lijowul, Abdul Aalim Wahab Suhuyini, Thomas Romig, Marion Wassermann

{"title":"Appraising the genetic diversity of Dipylidium caninum: first molecular evidence from Ghana, West Africa, in a global context.","authors":"Francis Addy, Emmanuel Atarikaki, Sonja Dumendiak, Ebenezer Kofi Nartey, Gideon Adu-Bonsu, Sylvester Rudolf Darko, Kuba Cain Pachala, Bismark Wasiru, Mujahid Mohammed, Emmanuel Dzubi, Frank Yajaboum Lijowul, Abdul Aalim Wahab Suhuyini, Thomas Romig, Marion Wassermann","doi":"10.1017/S0031182026102054","DOIUrl":"10.1017/S0031182026102054","url":null,"abstract":"Dipylidium caninum is a globally distributed zoonotic cestode commonly found in dogs and cats. Recent molecular studies have identified 2 major, primarily host-associated genotypic clades. However, these findings are based on geographically restricted datasets and therefore may not capture the full extent of the species' genetic diversity. Molecular data from many endemic regions remain scarce or entirely absent. In this study, D. caninum isolates collected from dogs in northern Ghana were characterized using partial fragments of the mitochondrial nad1 and cox1 genes. Parsimony analyses identified 4 haplotypes for cox1 and 7 for nad1. For both genes, the Ghanaian isolates clustered within the globally recognized canine and feline genotypic groups, with the canine genotype predominating. When integrated into the existing global dataset, the analyses resolved 3 well-supported phylogenetic clades, designated as genotypes: 1 canine-associated G1 and 2 feline-canine-associated genotypes G2a and G2b. This study provides the first molecular data for D. caninum from Ghana, West Africa, contributes to a broader understanding of the global population structure and establishes a basis for future investigations into the biogeography of this cestode.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-6"},"PeriodicalIF":2.4,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147723563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new species of Gastronodus Singh, 1934 (Nematoda: Spirocercidae) from Micaelamys namaquensis (A. Smith, 1834) (Rodentia: Muridae) in the Nama-Karoo, South Africa. 南非Nama-Karoo地区Micaelamys namaquensis (A. Smith, 1834)（啮齿目：Muridae）中Gastronodus Singh， 1934一新种（线虫纲：螺旋体螨科）。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-20 DOI: 10.1017/S0031182026102030

Ernst Schlemmer, Kerstin Junker, Yasen Mutafchiev, Conrad A Matthee, Sonja Matthee

{"title":"A new species of Gastronodus Singh, 1934 (Nematoda: Spirocercidae) from Micaelamys namaquensis (A. Smith, 1834) (Rodentia: Muridae) in the Nama-Karoo, South Africa.","authors":"Ernst Schlemmer, Kerstin Junker, Yasen Mutafchiev, Conrad A Matthee, Sonja Matthee","doi":"10.1017/S0031182026102030","DOIUrl":"10.1017/S0031182026102030","url":null,"abstract":"Despite several recent studies, the helminth diversity of small mammals in South Africa remains poorly understood. During a survey conducted from 2023 to 2025 on the helminth assemblages of rodents in the Western Cape Province, South Africa, nematodes were collected from the stomach of a female Micaelamys namaquensis in the Nama-Karoo biome. For one of the nematode species identified, morphological characters, based on light and electron microscopy, corresponded to the genus Gastronodus: a short, heavily sclerotized buccal capsule armed with 6 teeth, the presence of 3 pairs of pedunculate postcloacal papillae as well as dissimilar and unequal spicules in males and a vulva situated at the level of the glandular oesophagus in females. The presence of 3, rather than 2, pairs of postcloacal pedunculate papillae distinguishes our specimens from the closely related genera Cylicospirura, Skrjabinocercina and Spirocerca. Furthermore, the presence of 4-5 vs 6-7 pairs of pedunculate precloacal papillae distinguishes them from their single currently recognized congener, Gastronodus strasseni sampled from Suncus murinus in India. Based on these results, we here describe Gastronodus karooensis n. sp. Phylogenetic analyses of the mtDNA cox1 gene suggest some affiliation with the genus Spirocerca and provide some support for their placement in the Spirocercidae. This is the first record of the genus Gastronodus in Africa. The description of a new species of Spirocercidae from M. namaquenis highlights the need for further studies as the nematode diversity in wild hosts in South Africa is currently underestimated.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-10"},"PeriodicalIF":2.4,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147723577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Overlap in parasite communities among vervet monkeys, humans, livestock and dogs at Lake Nabugabo, Uganda. 在乌干达纳布加博湖，长尾猴、人类、牲畜和狗之间的寄生虫群落重叠。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-17 DOI: 10.1017/S0031182026101978

Pooja Upadhayay, Martin Kváč, Kelly M Sambucci, Eva Nosková, Vladislav Ilík, Barbora Pafčo, Nikola Holubova, Barbora Červená, Valerie A M Schoof

{"title":"Overlap in parasite communities among vervet monkeys, humans, livestock and dogs at Lake Nabugabo, Uganda.","authors":"Pooja Upadhayay, Martin Kváč, Kelly M Sambucci, Eva Nosková, Vladislav Ilík, Barbora Pafčo, Nikola Holubova, Barbora Červená, Valerie A M Schoof","doi":"10.1017/S0031182026101978","DOIUrl":"10.1017/S0031182026101978","url":null,"abstract":"Zoonotic parasites are a growing concern in regions where humans, domestic animals and wildlife live in close proximity. Understanding parasite communities overlap across hosts is essential for understanding transmission risks. In this study, we used sedimentation technique followed by microscopy, and molecular techniques for the identification of strongylid nematodes, Strongyloides, and protists in vervet monkeys (Chlorocebus pygerythrus, N = 75), household latrines (N = 25), dogs (Canis lupus familiaris, N = 25) and livestock (Ncows = 9, Ngoats = 7, Npigs = 9) at Lake Nabugabo, Uganda to compare parasite assemblages across hosts within the same habitat. We identified 33 unique parasite taxa with 18 in dogs, 14 in livestock and 10 each in vervets and latrine samples. There was a significant difference in the parasite infection rate between vervets (88%), latrines (24%), livestock (44%) and dogs (40%). Samples harboured at least 7 known genera of strongylid nematodes, with Ancylostoma, Murshidia and Oesophagostomum being the most prevalent. Protists diversity varied across hosts. Species-specific Cryptosporidium taxa occurred in dogs, goats (Capra aegagrus hircus) and pigs (Sus scrofa domesticus), and C. andersoni was detected in both dogs (4%) and cows (Bos taurus, 8%). Giardia intestinalis assemblage A was found in vervets (1.3%), dogs (16%) and latrine samples (12%). Enterocytozoon bieneusi occurred only in latrine samples, while Encephalitozoon sp. occurred only in vervets (4%). Our results show limited overlap between vervets and other hosts but highlight shared Giardia among animals and latrine samples, indicating key points of potential zoonotic transmission in this human-modified landscape.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-17"},"PeriodicalIF":2.4,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147699246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Paradiplozoon garra n. sp. (Monogenea, Diplozoidae), a new species from Garra surgifrons (Cyprinidae, Labeoninae) in Southwest China. 中国西南地区狭口狭口狭口狭口狭口狭口狭口狭口狭口狭口狭口狭口狭口狭口狭口狭口一新种。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-17 DOI: 10.1017/S0031182026102005

Lu Shen, Feiyan Meng, Lixian Fan

引用次数: 0

Systematic review of triploidy among parasitic worms. 寄生虫三倍体的系统综述。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-15 DOI: 10.1017/S003118202610198X

Viktor Kovalov, Barbora Trubenová

{"title":"Systematic review of triploidy among parasitic worms.","authors":"Viktor Kovalov, Barbora Trubenová","doi":"10.1017/S003118202610198X","DOIUrl":"10.1017/S003118202610198X","url":null,"abstract":"Parasitic worms have significant medical, veterinary and economic importance. Numerous studies have therefore addressed various aspects of parasitic worms' biology. In contrast, the ploidy of parasitic worms remains comparatively understudied, despite a few known triploid species. Polyploidy is known to have phenotypic and genetic effects in animals, which can lead to changes at the evolutionary scale. The evolutionary consequences of polyploidy have been addressed in host-parasite systems; however, most studies have focused on the host perspective, with relatively few studies examining the parasitic side of the story. This review provides available information on the distribution of triploidy among parasitic worms, along with information on such aspects as reproduction, origin of triploidy and life history. Across 100 selected papers (out of 416 screened), triploidy was reported for 15 parasitic Platyhelminthes and 13 parasitic Nematoda. Most triploid species of parasitic worms (24 out of 28) were documented at the adult stage. Triploid lineages reported for the adult stage reproduce predominantly via parthenogenesis. Finally, the paper discusses the potential effects of ploidy variation for host-parasite dynamics and adaptation rates of parasitic worms. In particular, how parasitic worms adapt to their hosts despite potential constraints of asexuality. As well as whether triploid individuals outcompete diploid conspecifics when both ploidy levels coinfect the host, as could be expected if triploids have higher virulence.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-16"},"PeriodicalIF":2.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147691631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights on the morphological aspects of lipid accumulation and excretion in adult Caryophyllaeus brachycollis (Cestoda, Caryophyllidea). 成虫腕足石竹（石竹科，石竹科）脂质积累和排泄的形态学研究。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-15 DOI: 10.1017/S0031182026101930

Larisa Poddubnaya, Massimo Lorenzoni, Galina I Izvekova, Antonella Carosi, Bahram Sayyaf Dezfuli

{"title":"Insights on the morphological aspects of lipid accumulation and excretion in adult Caryophyllaeus brachycollis (Cestoda, Caryophyllidea).","authors":"Larisa Poddubnaya, Massimo Lorenzoni, Galina I Izvekova, Antonella Carosi, Bahram Sayyaf Dezfuli","doi":"10.1017/S0031182026101930","DOIUrl":"10.1017/S0031182026101930","url":null,"abstract":"This is the first ultrastructural study of an adult tapeworm providing data on the morphological aspects of the pathways of lipid excretion via the tegumental surface and excretory system in the monozoic tapeworm Caryophyllaeus brachycollis (Janiszewska, 1953) from the chub Squalius tenellus (Heckel, 1843) obtained from a lake in the Bosnia-Herzegovina Federation. Our study has shown that the release of lipid droplets onto the parasite-host interface from the tegumental cytoplasm is carried out with the participation of tegumental vesicles, which clustered and fused with each other to form electron-lucent, membrane-bound sacs around lipid droplets. The ultrastructural pattern of the excretory bladder is presented for the first time for an adult tapeworm. In C. brachycollis, the syncytial epithelial lining of both the distal and proximal bladder is a derivative of the tegumental distal cytoplasm of the posterior body surface. Variations in the structural organization of both bladder parts were observed in the kinds of luminal microtriches and in the presence of large cytoplasmic protrusions in the proximal bladder. In C. brachycollis, the lipid droplets are released into the proximal bladder lumen via 10 collecting descending excretory ducts. In adult mature monozoic caryophyllidean tapeworms, an accumulation of a large number of sarcoplasmic lipid droplets is observed and their presence in the protonephridial cyrtocytes is revealed at the posterior body end, where there are the reproductive organs and ducts.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-10"},"PeriodicalIF":2.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147691636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rediscovery and redescription of clinostomid trematodes from Pelecanus onocrotalus. 棘球绦虫的重新发现和重新描述。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-14 DOI: 10.1017/S0031182026101966

Federica Marcer, Marshet Adugna Mitiku, Perla Tedesco, Erica Marchiori, Hagos Ashenafi, Cinzia Tessarin, Aurora Lattanzi, Andrea Gustinelli, Monica Caffara

{"title":"Rediscovery and redescription of clinostomid trematodes from Pelecanus onocrotalus.","authors":"Federica Marcer, Marshet Adugna Mitiku, Perla Tedesco, Erica Marchiori, Hagos Ashenafi, Cinzia Tessarin, Aurora Lattanzi, Andrea Gustinelli, Monica Caffara","doi":"10.1017/S0031182026101966","DOIUrl":"10.1017/S0031182026101966","url":null,"abstract":"This study reports the first rediscovery and redescription of Euclinostomum lauroi in more than 40 years, based on an adult specimen recovered from the oesophagus of a great white pelican (Pelecanus onocrotalus) in Lake Tana, Ethiopia. An integrative taxonomic approach combining detailed morphological examination and molecular analyses (ITS rDNA and COI mtDNA) was employed. Scanning electron microscopy revealed additional features, including the fine surface morphology of the cirrus and genital opening. The same host individual harboured 2 Clinostomum species, C. phalacrocoracis and C. tilapiae, for which updated morphological redescriptions are provided. The record of C. tilapiae represents a new geographical record for Ethiopia. These findings expand current knowledge of African clinostomid diversity and identify Lake Tana as an important hotspot of trematode biodiversity. The newly generated morphological and molecular data refine species boundaries within Euclinostomum and Clinostomum and support the use of integrative approaches to resolve persistent taxonomic uncertainties in clinostomid systematics.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-14"},"PeriodicalIF":2.4,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147675938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dientamoeba fragilis cysts and pre-cysts in historic slide collections and a review of cyst formation among the parabasalia. 脆弱的双阿米巴囊肿和前囊肿的历史玻片收集和回顾囊肿形成在旁巴索。

IF 2.4 3区医学

Parasitology Pub Date : 2026-04-13 DOI: 10.1017/S0031182026101942

Luke M Hall, Sarah Sapp, Mark Fox, Joel L N Barratt, John Timothy Ellis, Damien Stark

{"title":"Dientamoeba fragilis cysts and pre-cysts in historic slide collections and a review of cyst formation among the parabasalia.","authors":"Luke M Hall, Sarah Sapp, Mark Fox, Joel L N Barratt, John Timothy Ellis, Damien Stark","doi":"10.1017/S0031182026101942","DOIUrl":"10.1017/S0031182026101942","url":null,"abstract":"Dientamoeba fragilis transmission is a basic aspect of this intestinal parasite's biology that is poorly understood. Early historical reports reflecting the absence of a cyst are often cited as a central argument in debates supporting the lack of a D. fragilis cyst. While D. fragilis cysts have been described since Dobell's original description, their existence is not universally accepted. Here, Dobell's, Wenyon's and Hoare's collection of historical faecal smears stored at the Natural History Museum (London), dating back to the 1890s and the early 1900s, was examined for forms consistent with modern descriptions of D. fragilis cysts, and an example was found in 1 slide. Such rare forms were also detected during examination of stained faecal smears archived in the parasite reference laboratory collection at the United States Centers for Disease Control and Prevention. We discuss these observations in the context of literature describing cyst formation in parabasalids. Additionally, we report some incidental findings from past immunofluorescence experiments on cultured D. fragilis, which suggest differential staining that appears to correlate with life cycle stages. Considering published literature on the subject of D. fragilis cysts and the broader picture of cyst formation across diverse members of Parabasalia, we recommended that future investigations on D. fragilis transmission consider mounting evidence for the role of a true cyst despite its rarity in human faecal specimens. The factors leading to cyst formation and further characteristics of this life cycle stage require further study.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-10"},"PeriodicalIF":2.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147675907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of nanoliposomal quercetin - paromomycin and clindamycin on cutaneous leishmaniasis skin lesions in BALB/c mice. 纳米脂质体槲皮素-帕罗霉素和克林霉素对BALB/c小鼠皮肤利什曼病皮损的影响。

IF 2.4 3区医学

Parasitology Pub Date : 2026-03-30 DOI: 10.1017/S0031182026101905

Pooria Asadi, Majid Nouri, Minoo Shaddel, Zia Hejripour, Rahmat Solgi, Hamzeh Shahali, Mahmoud Momenzadeh, Mohammad Darvishi, Mohsen Chamanara

{"title":"Evaluation of nanoliposomal quercetin - paromomycin and clindamycin on cutaneous leishmaniasis skin lesions in BALB/c mice.","authors":"Pooria Asadi, Majid Nouri, Minoo Shaddel, Zia Hejripour, Rahmat Solgi, Hamzeh Shahali, Mahmoud Momenzadeh, Mohammad Darvishi, Mohsen Chamanara","doi":"10.1017/S0031182026101905","DOIUrl":"10.1017/S0031182026101905","url":null,"abstract":"The current treatments for leishmaniasis come with various side effects and the risk of drug resistance. Nanoliposomal quercetin - paromomycin and clindamycin - is being explored as a new therapeutic approach to replace existing treatments. In this research, nanoliposomal was created using the ultrasonic thin-layer dispersion method and evaluated for its encapsulation efficiency, size and zeta potential. The average particle size in the nanoliposome containing quercetin - paromomycin and clindamycin - was 74.8 nm. The dispersibility indices were equal to 0.61. The zeta potential of the nanoliposome was 24.2 mV. EC50 levels of nanoliposomal quercetin (QN), nanoliposomal quercetin-paromomycin (QPN), quercetin-paromomycin and clindamycin (QPC), nanoliposomal quercetin-clindamycin and paromomycin (QCPN), paromomycin (P) against L. major promastigotes were 70 ± 2, 57 ± 2, 51 ± 9, 43 ± 8 and 41 ± 8 micromolar, respectively. There was no significant difference in the activity of liposomal formulations against L. major promastigotes. The topical application of all treatment groups compared to PBS and the untreated group caused significant reductions in the lesion sizes. The nanoliposomal quercetin - paromomycin and clindamycin - displayed a significant anti-leishmanial effect, showing promise as a potential candidate for treatment of cutaneous leishmaniasis.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-6"},"PeriodicalIF":2.4,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147575106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0