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Helminth diversity of nutria (Myocastor coypus) across the Morava basin in the Czech Republic. 捷克共和国莫拉瓦盆地秧鸡(Myocastor coypus)螺旋虫的多样性。
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-20 DOI: 10.1017/S0031182024001628
Michal Benovics, Eva Nosková, Anna Klimešová, Lucie Škorpíková, Ema Jaššová, Jakub Drimaj, Jan Slováček, Ondřej Mikulka
{"title":"Helminth diversity of nutria (<i>Myocastor coypus</i>) across the Morava basin in the Czech Republic.","authors":"Michal Benovics, Eva Nosková, Anna Klimešová, Lucie Škorpíková, Ema Jaššová, Jakub Drimaj, Jan Slováček, Ondřej Mikulka","doi":"10.1017/S0031182024001628","DOIUrl":"10.1017/S0031182024001628","url":null,"abstract":"<p><p>The nutria was introduced to Europe from South America and kept for the fur industry. This semiaquatic rodent became a well-established species in the Czech Republic; however, it still poses a significant threat to the native fauna, not only as a natural competitor but also as a vector of non-indigenous parasites. Our research aimed to investigate the diversity of endoparasitic helminths in nutria, with a particular focus on assessing the risk posed by helminth species with zoonotic potential. A total of 46 nutria cadavers were collected at 8 locations in the Morava River basin and examined using standard parasitological post-mortem procedures. Additionally, coprological and molecular methods were used to identify the parasites. The presence of 6 helminth species was revealed. The highest prevalence was observed for <i>Strongyloides myopotami</i> (78.3%) and <i>Trichuris myocastoris</i> (37.0%), both of which are host-specific nematodes of nutria. Only 2 trematode taxa were recorded (<i>Echinostoma</i> sp. and a representative of the family Psilostomidae). The presence of alveolar hydatid cysts of <i>Echinococcus multilocularis</i> in the livers of 5 nutria specimens was also recorded. Herein, we provide novel molecular data for each parasite species collected, which is valuable for future phylogenetic analyses. Our findings also demonstrate that nutria in the Czech Republic serve as a carrier of helminths with zoonotic potential, particularly <i>E. multilocularis</i> and <i>S. myopotami</i>. Although the nutria is a relatively new species in local fauna, its synanthropic behaviour raises concerns about potential threats to human health, underscoring the importance of exercising caution when handling these animals.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864967","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
Epidemiology and transmission patterns of Cryptosporidium spp., and Giardia duodenalis within a One Health framework in rural areas of Eastern Algeria. 阿尔及利亚东部农村地区“同一个健康”框架下隐孢子虫和十二指肠贾第虫的流行病学和传播模式
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-18 DOI: 10.1017/S0031182024001616
Sadiya Maxamhud, Nassiba Reghaissia, AbdElKarim Laatamna, Eleni Gentekaki, Anastasios D Tsaousis
{"title":"Epidemiology and transmission patterns of <i>Cryptosporidium</i> spp., and <i>Giardia duodenalis</i> within a One Health framework in rural areas of Eastern Algeria.","authors":"Sadiya Maxamhud, Nassiba Reghaissia, AbdElKarim Laatamna, Eleni Gentekaki, Anastasios D Tsaousis","doi":"10.1017/S0031182024001616","DOIUrl":"10.1017/S0031182024001616","url":null,"abstract":"<p><p>Gastrointestinal infections constitute a significant global health concern, particularly in tropical and subtropical regions, caused by various pathogens. Among these, <i>Cryptosporidium</i> spp. and <i>Giardia duodenalis</i> are noteworthy due to their zoonotic potential. In Algeria, molecular epidemiological data on cryptosporidiosis and giardiasis are limited. To fill this gap, the present study aimed to examine the transmission dynamics of <i>Cryptosporidium</i> spp., and <i>Giardia duodenalis</i> in various households. A total of 216 samples were collected from the rural Guelma and Souk Ahras provinces, located in the eastern part of Algeria. These included human and animal faeces, as well as water and soil samples. DNA was extracted, followed by nested PCR targeting the <i>SSU</i> rRNA gene to detect <i>Cryptosporidium</i> spp., while the <i>gp60</i> gene was amplified for subtyping. Detection of <i>G. duodenalis</i> was performed by qPCR targeting the <i>SSU</i> rRNA gene, followed by amplification of <i>tpi</i>, <i>bg</i> and <i>gdh</i> genes for genotyping and subtyping. Several <i>Cryptosporidium</i> species, including <i>C. bovis, C. ryanae, C. andersoni</i> and <i>C. parvum</i>, were identified in human, animal and environmental samples. The zoonotic <i>C. parvum</i> subtype IIaA17G2R1 was detected in human, animal and soil samples. <i>Giardia duodenalis</i> assemblage B was detected in a human sample, while assemblage E was found in cattle and sheep. The current investigation underscores the importance of the One Health approach in addressing issues related to intestinal parasites, highlighting the need for improved surveillance and control measures in rural settings.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847150","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
Genome-wide association study analysis of single nucleotide variants in L. infantum associated with IL-6 inflammatory response in visceral leishmaniasis. 内脏利什曼病婴儿乳杆菌单核苷酸变异与IL-6炎症反应相关的全基因组关联研究分析。
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-13 DOI: 10.1017/S0031182024001598
Amanda Miranda da Silva, Kátia Silene Sousa Carvalho, Caio Andrey Bezerra Januário, Raquel Gomes de Sena Carneiro Caldas, Bianka Lopes da Silva Paulino, Débora Cavalcante Braz, Dorcas Lamounier Costa, Gabriel da Luz Wallau, Wilson Jose da Silva Junior, Carlos Henrique Nery Costa
{"title":"Genome-wide association study analysis of single nucleotide variants in <i>L. infantum</i> associated with IL-6 inflammatory response in visceral leishmaniasis.","authors":"Amanda Miranda da Silva, Kátia Silene Sousa Carvalho, Caio Andrey Bezerra Januário, Raquel Gomes de Sena Carneiro Caldas, Bianka Lopes da Silva Paulino, Débora Cavalcante Braz, Dorcas Lamounier Costa, Gabriel da Luz Wallau, Wilson Jose da Silva Junior, Carlos Henrique Nery Costa","doi":"10.1017/S0031182024001598","DOIUrl":"10.1017/S0031182024001598","url":null,"abstract":"<p><p>Elevated levels of IL-6 in plasma are associated with the severity of visceral leishmaniasis (VL). The clinical manifestations of VL vary among patients, influenced by host factors and the virulence of the <i>Leishmania infantum</i> parasite. Considering that severe VL may result from an exaggerated inflammatory response, this study investigated whether IL-6 could serve as a biomarker to identify pro-inflammatory virulence factors. We conducted a genome-wide association study (GWAS) analysis on <i>L. infantum</i> isolates from patients with VL, whose IL-6 concentrations were measured. The analysis revealed that the relationship between IL-6 levels and clinical outcomes (survival <i>vs</i> mortality) had an area under the curve (AUC) of 0.67 (95% CI 0.52–0.81). A cut-off of 391.7 pg mL<sup>−1</sup> for IL-6 was established to conduct a logistic regression analysis. We identified 10 029 single nucleotide variants (SNVs) across 62 genomes, resulting in 6,948 SNVs after filtering, of which 6,341 are located in protein-coding regions. The association analysis with PLINK identified 722 variants, of which 35 showed significant associations, with odds ratios ≥3.3, primarily in coding regions. These findings demonstrate that IL-6 levels tended to be associated with the fatal outcome of VL and highlight 35 novel genetic variants that could serve as potential biomarkers for prognosis. Further research into the biological role of these variants may lead to new therapeutic targets and improve the clinical management of VL, especially in identifying high-risk patients.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818847","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
Repurposing statins for the treatment of larval cestodiases: in silico evaluation of statin-HMG-CoA reductase interactions and assessment of statin effects on a cestode model. 将他汀类药物重新用于治疗幼虫绦虫病:他汀类药物-HMG-CoA 还原酶相互作用的硅学评估以及他汀类药物对绦虫模型影响的评估。
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-13 DOI: 10.1017/S0031182024001586
Marina Monteiro Guedes, Jeferson Camargo de Lima, Jéssica Andrade Paes, María Del Pilar Cevasco Contreras, Ana María Celentano, Arnaldo Zaha, Karina Mariante Monteiro, Mara Cecilia Rosenzvit, Henrique Bunselmeyer Ferreira
{"title":"Repurposing statins for the treatment of larval cestodiases: <i>in silico</i> evaluation of statin-HMG-CoA reductase interactions and assessment of statin effects on a cestode model.","authors":"Marina Monteiro Guedes, Jeferson Camargo de Lima, Jéssica Andrade Paes, María Del Pilar Cevasco Contreras, Ana María Celentano, Arnaldo Zaha, Karina Mariante Monteiro, Mara Cecilia Rosenzvit, Henrique Bunselmeyer Ferreira","doi":"10.1017/S0031182024001586","DOIUrl":"https://doi.org/10.1017/S0031182024001586","url":null,"abstract":"","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-39"},"PeriodicalIF":2.1,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818849","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
Mixed strongyle parasite infections vary across host age and space in a population of feral horses. 混合圆形寄生虫感染在野马种群中因宿主年龄和空间而异。
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-12 DOI: 10.1017/S0031182024001185
Sangwook Ahn, Elizabeth M Redman, Stefan Gavriliuc, Jennifer Bellaw, John S Gilleard, Philip D McLoughlin, Jocelyn Poissant
{"title":"Mixed strongyle parasite infections vary across host age and space in a population of feral horses.","authors":"Sangwook Ahn, Elizabeth M Redman, Stefan Gavriliuc, Jennifer Bellaw, John S Gilleard, Philip D McLoughlin, Jocelyn Poissant","doi":"10.1017/S0031182024001185","DOIUrl":"https://doi.org/10.1017/S0031182024001185","url":null,"abstract":"<p><p>Identifying factors that drive among-individual variation in mixed parasitic infections is fundamental to understanding the ecology and evolution of host–parasite interactions. However, a lack of non-invasive diagnostic tools to quantify mixed infections has restricted their investigation for host populations in the wild. This study applied DNA metabarcoding on parasite larvae cultured from faecal samples to characterize mixed strongyle infections of 320 feral horses on Sable Island, Nova Scotia, Canada, in 2014 to test for the influence of host (age, sex and reproductive/social status) and environmental (location, local density and social group membership) factors on variation. Twenty-five strongyle species were identified, with individual infections ranging from 3 to 18 species with a mean richness (±1 s.d.) of 10.8 ± 3.1. Strongyle eggs shed in faeces were dominated by small strongyle (cyathostomins) species in young individuals, transitioning to large strongyles (<i>Strongylus</i> spp.) in adults. Egg counts were highest in young individuals and in the west or centre of the island for most species. Individuals in the same social group had similar parasite communities, supporting the hypothesis that shared environment may drive parasite assemblages. Other factors such as local horse density, sex, date and reproductive/social status had minimal impacts on infection patterns. This study demonstrates that mixed infections can be dynamic across host ontogeny and space and emphasizes the need to consider species-specific infection patterns when investigating mixed infections.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-18"},"PeriodicalIF":2.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142813902","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
Variation of functional diversity structure measured as combined species dominance, functional diversity, and functional redundancy in two taxa of ectoparasitic arthropods at two spatial scales: host-associated, ecological, and geographic effects. 寄主相关效应、生态效应和地理效应两个空间尺度下,以物种优势度、功能多样性和功能冗余为衡量指标的两个异寄生节肢动物类群功能多样性结构的变化
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-12 DOI: 10.1017/S0031182024001483
Boris R Krasnov, Michal Stanko, Maxim V Vinarski, Natalia P Korallo-Vinarskaya, Irina S Khokhlova
{"title":"Variation of functional diversity structure measured as combined species dominance, functional diversity, and functional redundancy in two taxa of ectoparasitic arthropods at two spatial scales: host-associated, ecological, and geographic effects.","authors":"Boris R Krasnov, Michal Stanko, Maxim V Vinarski, Natalia P Korallo-Vinarskaya, Irina S Khokhlova","doi":"10.1017/S0031182024001483","DOIUrl":"https://doi.org/10.1017/S0031182024001483","url":null,"abstract":"<p><p>The functional diversity structure of a community can be represented as a combination of three additive components (species dominance D, functional redundancy R, and functional diversity Q) (DRQ approach in which different facets of functional differences between species are considered simultaneously). We applied this concept to assemblages of fleas and gamasid mites parasitic on small mammals at continental (across regions of the Palearctic) and regional (across sampling sites in Slovakia) scales and asked: What are the relative effects of host species, biome/habitat type, and geographic locality on the DRQ composition of a parasite assemblage? At the continental scale, regions were partitioned according to predominant biome or geographic position in a continental section. At the regional scale, sampling sites were partitioned according to habitat type or geographic locality. We tested for differences in the functional diversity structure (measured as the DRQ composition) of an ectoparasite assemblage (a) within a host species between biomes/habitat types or continental sections/localities and (b) between host species within a biome/habitat type or a continental section/locality. At both scales, the functional diversity structure of both flea and mite assemblages differed mainly between host species within a biome/habitat or geographic regions/locations, whereas differences in the DRQ composition between biomes/habitats or geographic regions/locations were only detected in a few host species. We compare our results with the results of earlier studies and conclude that the DRQ approach has an advantage over a single diversity metric and allows a better understanding of spatial variation in different facets of ectoparasite diversity.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142813931","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
Prevalence and genotypic characterization of zoonotic intestinal protozoan parasites in transboundary migratory Mongolian Gazelles (Procapra gutturosa): the first survey. 跨界迁徙蒙古瞪羚(Procapra gutturosa)人畜共患肠道原生动物寄生虫的流行及基因型特征:首次调查。
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-12 DOI: 10.1017/S0031182024000854
Sichao Gao, Bin Hu, Gaojian Li, Xing An, Yanan Xing, Shuyi Han, Yan Chun, Lingling Han, Du Xi, Wenchao Li, Hongxuan He
{"title":"Prevalence and genotypic characterization of zoonotic intestinal protozoan parasites in transboundary migratory Mongolian Gazelles (<i>Procapra gutturosa</i>): the first survey.","authors":"Sichao Gao, Bin Hu, Gaojian Li, Xing An, Yanan Xing, Shuyi Han, Yan Chun, Lingling Han, Du Xi, Wenchao Li, Hongxuan He","doi":"10.1017/S0031182024000854","DOIUrl":"https://doi.org/10.1017/S0031182024000854","url":null,"abstract":"<p><p>The migration of Mongolian gazelles (<i>Procapra gutturosa</i>) poses a potential risk of outbreak for zoonotic intestinal protozoan parasite infections. This study aims to investigate the infection status of zoonotic intestinal protozoan parasites in these migratory Mongolian gazelles. We collected 120 fecal samples from Mongolian gazelles during their migration from Mongolia to China in December 2023. These samples were analysed using amplification and sequencing of partial SSU rRNA genes to detect the 4 presence of zoonotic intestinal protozoan parasites and characterize their genotypes. Our analysis revealed the presence of several zoonotic intestinal protozoan parasites in the sampled Mongolian gazelles. <i>Cryptosporidium</i> spp. was detected in 14.17% (17/120) of the samples, followed by <i>Cystoisospora belli</i> in 13.33% (16/120), <i>Blastocystis</i> sp. in 16.67% (20/120) and <i>Cyclospora cayetanensis</i> in 30.00% (36/120). Moreover, we identified novel host-adapted genotypes of <i>Cryptosporidium</i> spp. and <i>C. belli</i>, as well as the presence of ST2 and ST13 <i>Blastocystis</i> sp. subtypes, while distinct genotypes were found in <i>Blastocystis</i> sp. and <i>C. cayetanensis</i>. This study revealed the status of 4 prevalent zoonotic intestinal protozoan parasite infections in Mongolian gazelles and provided crucial insights into their characteristics. The prevalence of these parasites in the population highlights the potential risk of cross-border transmission of infectious diseases associated with long-distance migration. Furthermore, the identification of novel genotypes contributes to our understanding of the genetic diversity and adaptation of these parasites. These findings can inform the development of protective measures to mitigate the impact of these infections on the health and survival of Mongolian gazelles.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142813910","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
Paleoparasitological analysis of a 15th-16th c. CE latrine from the merchant quarter of Bruges, Belgium: Evidence for local and exotic parasite infections. 比利时布鲁日商业区一座公元15 -16世纪厕所的古寄生虫学分析:当地和外来寄生虫感染的证据。
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-06 DOI: 10.1017/S0031182024001100
Marissa L Ledger, Maxime Poulain, Koen Deforce
{"title":"Paleoparasitological analysis of a 15th-16th c. CE latrine from the merchant quarter of Bruges, Belgium: Evidence for local and exotic parasite infections.","authors":"Marissa L Ledger, Maxime Poulain, Koen Deforce","doi":"10.1017/S0031182024001100","DOIUrl":"https://doi.org/10.1017/S0031182024001100","url":null,"abstract":"<p><p>Paleoparasitological studies have made important contributions to our understanding of the past epidemiology of parasites, infection in past populations and lifestyle in the past. In some cases, these ancient parasites can also provide evidence for long distance travel or migration of people in the past. Three sediment samples from a 15th–16th c. CE latrine from the Spanish nation house in Bruges, Belgium were analysed for preserved helminth eggs using microscopy. Bruges was a major trading centre in medieval Europe, thus it was home to a large merchant population with extensive trading networks. Paleoparasitological analysis revealed a preserved parasite egg from <i>Schistosoma mansoni</i>, which causes intestinal schistosomiasis. Roundworm, whipworm, liver fluke and <i>Taenia</i> tapeworm eggs were also found in the latrine which is consistent with parasites previously found in the local population in the medieval period. These new data provide direct evidence for the movement of <i>S. mansoni</i> outside of its endemic area. Today the vast majority of <i>S. mansoni</i> infections occur in Sub-Saharan Africa, with additional endemic areas in the Arabian peninsula and South America. The introduction of <i>S. mansoni</i> into South America is proposed to have occurred relatively recently in human history, as the result of forced movement of people from Africa to the Americas with the Atlantic slave trade. Thus, this infection may have occurred in a merchant who acquired the parasite during trade voyages to Africa or in an individual living in Africa who migrated to Bruges.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142786432","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
The first mitogenome of the genus Amphalius (Siphonaptera: Ceratophyllidae) and its phylogenetic implications. 双翅虫属的第一个有丝分裂基因组及其系统发育意义。
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-03 DOI: 10.1017/S0031182024000635
Ju Pu, Xiaoxia Lin, Wenge Dong
{"title":"The first mitogenome of the genus <i>Amphalius</i> (Siphonaptera: Ceratophyllidae) and its phylogenetic implications.","authors":"Ju Pu, Xiaoxia Lin, Wenge Dong","doi":"10.1017/S0031182024000635","DOIUrl":"https://doi.org/10.1017/S0031182024000635","url":null,"abstract":"<p><p><i>Amphalius spirataenius</i> belongs to Arthropoda, Insecta, Siphonaptera, Ceratophylloidea, Ceratophyllinae, <i>Amphalius</i>. Only 2 species from the subfamily Ceratophyllinae have been sequenced for mitogenomes to date. The genus <i>Amphalius</i> mitogenome research was still blank. The <i>A. spirataenius</i> mitogenome was determined, annotated and analysed for the first time in this study. The 14 825 bp long genome has the typical metazoan of 37 genes with insect ancestral genome arrangement pattern. There was no significant difference in codon usage of 13 protein-coding genes: UUA, UCU, GUU, ACU and GCU were the most frequently used codons. It was found that the reason for codon preference mainly contributed to natural selection base on PR2, ENC-plot and neutrality curve analysis. Evolutionary rate, conserved sites, variable sites and nucleotide diversity analysis indicated that <i>nad6</i> of <i>A. spirataenius</i> had the fastest evolutionary rate, while <i>cox1</i> had the slowest evolutionary rate. Phylogenetic trees were reconstructed based on 13 protein-coding genes and 2 rRNA genes datasets using Bayesian inference and maximum likelihood method. The phylogenetic tree supported that both Siphonaptera and Mecoptera were monophyletic, and were sister groups to each other. This study filled gap of the genus <i>Amphalius</i> mitogenome sequences and was of great significance for understanding evolution of the order Siphonaptera.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142770935","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
Occurrence of Trichinella spiralis in farmed wild boars (Sus scrofa): an underrated risk in China. 养殖野猪(Sus scrofa)中旋毛虫螺旋体的发生:在中国被低估的风险。
IF 2.1 3区 医学
Parasitology Pub Date : 2024-12-03 DOI: 10.1017/S0031182024001288
Nian-Zhang Zhang, Meng Wang, Wei-Gang Chen, Wen-Yan Gai, Thanh Thi Ha Dao, Ting-Ting Li, Wen-Hui Li, Hai-Rui Zhang, Hong Yin, Nguyen Thi Bich Thuy, Bao-Quan Fu
{"title":"Occurrence of <i>Trichinella spiralis</i> in farmed wild boars (<i>Sus scrofa</i>): an underrated risk in China.","authors":"Nian-Zhang Zhang, Meng Wang, Wei-Gang Chen, Wen-Yan Gai, Thanh Thi Ha Dao, Ting-Ting Li, Wen-Hui Li, Hai-Rui Zhang, Hong Yin, Nguyen Thi Bich Thuy, Bao-Quan Fu","doi":"10.1017/S0031182024001288","DOIUrl":"https://doi.org/10.1017/S0031182024001288","url":null,"abstract":"<p><p>Natural infection by <i>Trichinella</i> sp. has been reported in humans and more than 150 species of animals, especially carnivorous and omnivorous mammals. Although the presence of <i>Trichinella</i> sp. infection in wild boars (<i>Sus scrofa</i>) has been documented worldwide, limited information is known about <i>Trichinella</i> circulation in farmed wild boars in China. This study intends to investigate the prevalence of <i>Trichinella</i> sp. in farmed wild boars in China. Seven hundred and sixty-one (761) muscle samples from farmed wild boars were collected in Jilin Province of China from 2017 to 2020. The diaphragm muscles were examined by artificial digestion method. The overall prevalence of <i>Trichinella</i> in farmed wild boars was 0.53% [95% confidence interval (CI): 0.51–0.55]. The average parasite loading was 0.076 ± 0.025 larvae per gram (lpg), and the highest burden was 0.21 lpg in a wild boar from Fusong city. <i>Trichinella spiralis</i> was the only species identified by multiplex polymerase chain reaction. The 5S rDNA inter-genic spacer region of <i>Trichinella</i> was amplified and sequenced. The results showed that the obtained sequence (GenBank accession number: OQ725583) shared 100% identity with the <i>T. spiralis</i> HLJ isolate (GenBank accession number: MH289505). Since the consumption of farmed wild boars is expected to increase in the future, these findings highlight the significance of developing exclusive guidelines for the processing of slaughtered farmed wild boar meat in China.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142770934","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}
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