Parasitology最新文献_第8页

Population density drives increased parasitism via greater exposure and reduced resource availability in wild red deer. 在野生马鹿中，种群密度通过更多的暴露和资源可用性的降低而导致寄生虫的增加。

IF 2.4 3区医学

Parasitology Pub Date : 2025-06-01 DOI: 10.1017/S0031182025100516

Adam Z Hasik, Shane Butt, Katie Maris, Sean Morris, Alison Morris, Richard S Turner, Josephine M Pemberton, Gregory F Albery

{"title":"Population density drives increased parasitism via greater exposure and reduced resource availability in wild red deer.","authors":"Adam Z Hasik, Shane Butt, Katie Maris, Sean Morris, Alison Morris, Richard S Turner, Josephine M Pemberton, Gregory F Albery","doi":"10.1017/S0031182025100516","DOIUrl":"10.1017/S0031182025100516","url":null,"abstract":"Exposure to environmentally transmitted parasites should increase with population density due to accumulation of infective parasites in space. However, resource competition also increases with density, lowering immunity and increasing susceptibility, offering an alternative pathway for density-dependent infection. To test the relationships between these two processes and parasitism, we examined associations between host density, resource availability, immunity, and counts of 3 common helminth parasites using a long-term study of red deer. We found evidence that immunity increased with resource availability while parasite counts declined with immunity. We also found that greater density correlated with reduced resource availability, and while density was positively associated with both strongyle and tissue worm burdens, resource availability was independently and negatively associated with the same burdens. Our results support separate roles of density-dependent exposure and susceptibility in driving infection, providing evidence that resource competition is an important driver of infection, exacerbating effects of density-dependent increases in exposure.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"724-734"},"PeriodicalIF":2.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12418284/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144637763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic diversity within Strongyloides fuelleborni: mitochondrial genome analysis reveals a clear African and Asian division. 燃料圆线虫的遗传多样性：线粒体基因组分析揭示了明显的非洲和亚洲分裂。

IF 2.4 3区医学

Parasitology Pub Date : 2025-06-01 DOI: 10.1017/S0031182025100243

Travis Richins, Sarah G H Sapp, Alexandra Juhasz, Lucas J Cunningham, E James La Course, J Russell Stothard, Joel L N Barratt

{"title":"Genetic diversity within Strongyloides fuelleborni: mitochondrial genome analysis reveals a clear African and Asian division.","authors":"Travis Richins, Sarah G H Sapp, Alexandra Juhasz, Lucas J Cunningham, E James La Course, J Russell Stothard, Joel L N Barratt","doi":"10.1017/S0031182025100243","DOIUrl":"10.1017/S0031182025100243","url":null,"abstract":"Following the recent report of strongyloidiasis caused by Strongyloides fuelleborni within a semi-captive colony of baboons in a UK safari park, we investigated the genetic relationships of this isolate with other Strongyloides isolates across the world. Whole-genome sequencing data were generated with later phylogenetic analysis of mitochondrial (mt) cytochrome oxidase subunit 1 (cox1) and nuclear ribosomal 18S sequences against 300 published Strongyloides reference genotypes. The putative African origin of the UK S. fuelleborni was confirmed and full-length mt genome sequences were assembled to facilitate a more detailed phylogenetic analysis of 14 mt coding regions against all available Strongyloides species. Our analyses demonstrated that the UK isolate represented a novel African lineage not previously described. Additional complete mt genomes were assembled for several individual UK safari park worms to reveal a slightly altered mt genome gene arrangement, allowing clear separation from Asian S. fuelleborni. Furthermore, these UK worms possessed expanded intergenic regions of unknown function that increase their mt genome size to approximately 24 kilobases (kb) as compared with some 16 kb for Asian S. fuelleborni; this may have arisen from unique populational founder and genetic drift effects set within the peculiar mixed species baboon and drill ancestry of this semi-captive primate colony. A maximum likelihood phylogeny constructed from 14 mt coding regions also supported an evolutionary distinction between Asian and African S. fuelleborni.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"735-744"},"PeriodicalIF":2.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12418279/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diversity of Stomylotrema spp. in the Mexican tropical lowlands: the case of Stomylotrema bijugum and Stomylotrema vicarium (Digenea: Stomylotrematidae), parasites of aquatic and passerine birds. 墨西哥热带低地Stomylotrema的多样性：bijugum Stomylotrema和vicarium Stomylotrema （digenia: Stomylotrema dae）的案例，水生和雀形鸟寄生虫。

IF 2.4 3区医学

Parasitology Pub Date : 2025-06-01 DOI: 10.1017/S0031182025100413

Marcelo Tonatiuh González-García, Valerie Pérez-Mancilla, César A Ríos-Muñoz, Ana Lucia Sereno-Uribe, Martín García-Varela, Mirza P Ortega-Olivares

{"title":"Diversity of Stomylotrema spp. in the Mexican tropical lowlands: the case of Stomylotrema bijugum and Stomylotrema vicarium (Digenea: Stomylotrematidae), parasites of aquatic and passerine birds.","authors":"Marcelo Tonatiuh González-García, Valerie Pérez-Mancilla, César A Ríos-Muñoz, Ana Lucia Sereno-Uribe, Martín García-Varela, Mirza P Ortega-Olivares","doi":"10.1017/S0031182025100413","DOIUrl":"10.1017/S0031182025100413","url":null,"abstract":"Distinguishing between Stomylotrema bijugum and S. vicarium is challenging due to their phenotypic plasticity. In this study, adult specimens were recovered from 9 host species in the Mexican tropical lowlands. To explore the morphological differences, 32 morphological characteristics were evaluated in 54 specimens. Linear discriminant analysis provided enough evidence to differentiate the 2 species. Additionally, a principal component analysis (PCA) was performed for each species. The PCA of S. bijugum revealed 3 groups separately corresponding to specimens from the 3 hosts, suggesting host-induced phenotypic plasticity, whereas the PCA of S. vicarium revealed that the specimens from 3 host species were clustered together, indicating morphometric homogeneity. To confirm the morphological differences between the 2 species of Stomylotrema, we sequenced 2 molecular markers: the D1-D3 domains of the large subunit (LSU) from nuclear DNA and nicotinamide adenine dinucleotide dehydrogenase subunit 1 (Nad1) from mitochondrial DNA. Sequences of the LSU were aligned and compared with the LSU sequences of other congeneric species available in GenBank. Phylogenetic analyses supported the monophyly of Stomylotrema, with 2 main subclades that corresponded to S. bijugum and S. vicarium. A haplotype network was predicted with 25 Nad1 sequences, revealing the presence of 2 clusters representing the 2 species separated from each other by 98 substitutions. The current studies on S. bijugum and S. vicarium revealed new hosts and geographical regions in the Americas, suggesting that both species addressed in the current study can complete their life cycle in the Neotropical region of Mexico.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"641-656"},"PeriodicalIF":2.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12418287/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144554104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of the mobilome yields new insights into its diversity, dynamics and evolution in parasites of the Trypanosomatidae family. 对锥虫科寄生虫中移动组的比较分析为其多样性、动态和进化提供了新的见解。

IF 2.1 3区医学

Parasitology Pub Date : 2025-05-01 DOI: 10.1017/S0031182025100231

Percy Omar Tullume-Vergara, Adriana Ludwig, Vyacheslav Yurchenko, Adriano Cappellazzo Coelho, Elizabeth Magiolo Coser, Marco Aurélio Krieger, Marta M G Teixeira, Jeffrey Jon Shaw, Joao M P Alves

{"title":"Comparative analysis of the mobilome yields new insights into its diversity, dynamics and evolution in parasites of the Trypanosomatidae family.","authors":"Percy Omar Tullume-Vergara, Adriana Ludwig, Vyacheslav Yurchenko, Adriano Cappellazzo Coelho, Elizabeth Magiolo Coser, Marco Aurélio Krieger, Marta M G Teixeira, Jeffrey Jon Shaw, Joao M P Alves","doi":"10.1017/S0031182025100231","DOIUrl":"10.1017/S0031182025100231","url":null,"abstract":"Transposable elements (TEs) have the ability to move and amplify inside the host genome, making them a pivotal source of genome plasticity. Presently, only 4 TE clades (all classified as Class I retrotransposons) have been identified in trypanosomatids. We predicted repeat content and manually curated TEs across the genomes of 57 trypanosomatids, shedding light on their proportions, diversity and dynamics. Our analysis yielded 214 TE consensus sequence models across the dataset, with abundance ranging from 0.1% to 7.2%. We found evidence of recent transposon activity in most species, with notable bursts in the Vickermania, Lafontella, Porcisia and Angomonas spp., along with Leishmania (Mundinia) chancei, L. (M.) orientalis and L. (M.) procaviensis. We confirmed that the 4 TE clades have colonized virtually all lineages of trypanosomatids, potentially playing a role in shaping their genome architecture. The effort of this work culminated in the establishment of the Trypanosomatid TE Database 1.0, a resource designed to standardize the TE annotation process that can serve as a foundation for future studies on trypanosomatid TEs.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"602-617"},"PeriodicalIF":2.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12278014/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The diversity of Khawia tapeworms (Cestoda: Caryophyllidea) of barbels (Cyprinidae: Barbinae) in the western Palearctic: the existence of vicariant lineages and the description of a new species from the Iberian Peninsula. 古北西部梭鲈（梭鲈科：梭鲈科）中Khawia绦虫的多样性：交替谱系的存在和来自伊比利亚半岛的一新种的描述。

IF 2.1 3区医学

Parasitology Pub Date : 2025-05-01 DOI: 10.1017/S0031182025100206

Kamila Koutná, Michal Benovics, Tomáš Scholz

{"title":"The diversity of Khawia tapeworms (Cestoda: Caryophyllidea) of barbels (Cyprinidae: Barbinae) in the western Palearctic: the existence of vicariant lineages and the description of a new species from the Iberian Peninsula.","authors":"Kamila Koutná, Michal Benovics, Tomáš Scholz","doi":"10.1017/S0031182025100206","DOIUrl":"10.1017/S0031182025100206","url":null,"abstract":"The caryophyllidean tapeworm Khawia armeniaca has long been regarded as an exceptionally widespread species within its genus, notable for its significant morphological variability. However, with the accumulation of molecular data from different fish hosts, K. armeniaca was suspected to represent a species complex. To clarify the true identity of these parasites, a comprehensive morphological and molecular study (using 18S, 28S and ITS2 ribosomal regions) of K. armeniaca tapeworms from barbels (Barbinae) across the Iberian Peninsula and the Middle East has been conducted. The results revealed two genetically distinct lineages within the K. armeniaca complex. The first lineage, found in Arabibarbus grypus, Barbus lacerta, Capoeta birunii, Carassobarbus luteus, Luciobarbus barbulus, L. esocinus and L. kersin in Iraq and Iran, is genetically congruent with K. armeniaca (Cholodkovsky, 1915), originally described from the Sevan khramulya (Capoeta sevangi) in Armenia. The second lineage, identified in Luciobarbus bocagei (type host), L. comizo and L. guiraonis from Portugal and Spain, is described as Khawia iberica n. sp. In addition to clear molecular divergence, K. iberica can be distinguished from K. armeniaca by notable morphological differences, including variations in the shape, structure and size of the ovary, the anterior extension of the vitelline follicles, the testes and several morphometric parameters.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"618-631"},"PeriodicalIF":2.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12278012/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144302711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Livestock and avermectins in sub-Saharan Africa: a restricted systematic review of the impacts on productivity and documentation of resistance. 撒哈拉以南非洲的牲畜和阿维菌素：对生产力影响的有限系统审查和耐药性记录。

IF 2.1 3区医学

Parasitology Pub Date : 2025-05-01 DOI: 10.1017/S0031182025100280

Cassidy Rist, Rose Zheng, Lauren Maghak

{"title":"Livestock and avermectins in sub-Saharan Africa: a restricted systematic review of the impacts on productivity and documentation of resistance.","authors":"Cassidy Rist, Rose Zheng, Lauren Maghak","doi":"10.1017/S0031182025100280","DOIUrl":"10.1017/S0031182025100280","url":null,"abstract":"There is growing interest in using avermectins in livestock as a vector control tool for mosquitoes involved in the transmission of human malaria in sub-Saharan Africa (SSA). If implemented, the potential health and productivity impacts across the livestock sector would need to be considered, as avermectins are already commonly used in veterinary medicine to treat gastrointestinal helminths and parasitic insects. Here we present the results of a restricted systematic review that summarizes what is known about the effects of avermectins on cattle and swine productivity in SSA and the presence of avermectin resistance in endo- and ectoparasites of importance in these species. A total of 583 unique journal articles were identified using key search terms in 3 databases: Agriculture, Life, and Natural Sciences Databases from ProQuest, CAB Abstracts and Scopus. Ten articles met the criteria for inclusion on impacts on productivity and 4 met the inclusion criteria related to avermectin resistance. All studies documenting impacts of avermectins on productivity were performed using ivermectin in cattle. Generally, these showed a positive significant effect on growth rates. Resistance to avermectins was documented in 2 of the 4 included articles. Considering the extensive literature documenting resistance to avermectins in other areas of the world, our findings may reflect a paucity of studies on the subject in SSA. The authors conclude that additional research is needed to quantify the potential benefits and challenges to the livestock sector of using avermectins for malaria control across different production systems, and in a variety of ecological settings.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"573-582"},"PeriodicalIF":2.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12278005/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular detection and characterization of spotted fever group Rickettsia and Anaplasma in ticks from Pakistan. 巴基斯坦蜱中斑点热群立克次体和无形体的分子检测和特征分析。

IF 2.1 3区医学

Parasitology Pub Date : 2025-05-01 DOI: 10.1017/S0031182025100358

Khan Sadia Salim, Ahmed Haroon, Benedict S Khoo, Evan J Kipp, Abid Ali, Davide Sassera, Muhammad Umair Aziz, Jonathan D Oliver

{"title":"Molecular detection and characterization of spotted fever group Rickettsia and Anaplasma in ticks from Pakistan.","authors":"Khan Sadia Salim, Ahmed Haroon, Benedict S Khoo, Evan J Kipp, Abid Ali, Davide Sassera, Muhammad Umair Aziz, Jonathan D Oliver","doi":"10.1017/S0031182025100358","DOIUrl":"10.1017/S0031182025100358","url":null,"abstract":"The present study was designed to report the prevalence of spotted fever group Rickettsia and Anaplasma in ticks from Pakistan. To address this knowledge gap, ticks were collected from October 2019 to November 2020 from livestock hosts. Three hundred ninety ticks from Punjab, Khyber Pakhtunkhwa and Islamabad were investigated for the presence of Rickettsia and Anaplasma. The collected ticks were subjected to molecular studies for detection and characterization of spotted fever group Rickettsia and Anaplasma in ticks from Pakistan. PCR amplification of the ompA gene was used for detection of Rickettsia and portions of the 16S rDNA gene for detection of Anaplasma. Nine species of ticks were tested. Of the 390 ticks tested, 7 (2.58%) ticks were positive for Rickettsia. Rickettsia spp. were detected in Haemaphysalis punctata, Hyalomma anatolicum, Hyalomma scupense, Rhipicephalus microplus and Rhipicephalus sanguineus. Unknown Rickettsia was detected in Hy. scupense. Fifty-seven (14.6%) ticks were also positive for Anaplasma spp. Anaplasma ovis was detected in Hy. anatolicum, Hy. scupense, Hy. excavatum, Rhipicephalus decoloratus, R. microplus and R. sanguineus. Anaplasma marginale was detected in Hy. anatolicum, Hy. scupense, R. microplus, R. decoloratus and R. sanguineus. The Anaplasma sequences obtained from this experiment were 99-100% similar to those of the documented strains. This study provides information and confirms the presence of spotted fever group Rickettsia and Anaplasma spp. in different tick species. It also highlights the need for control programs to prevent health risks. Further investigation to determine the prevalence and disease burden of these pathogens in Pakistan is necessary.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"632-640"},"PeriodicalIF":2.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12278007/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phylogenetic assessment of Plasmodium (Saurocytozoon) tupinambi comb. nov. (Haemosporida, Plasmodiidae) in golden tegu lizards: shedding light on a long-standing Haemosporida taxonomic puzzle. 梳状冠状疟原虫的系统发育评价。11 .金蜥中的（血孢子虫，疟原虫科）：揭示了一个长期存在的血孢子虫分类难题。

IF 2.1 3区医学

Parasitology Pub Date : 2025-05-01 DOI: 10.1017/S0031182025000381

Amanda M Picelli, M Andreína Pacheco, Angie D Gonzalez, Pedro H O Pereira, Oscar A Rodriguez Fandiño, Lady J Correa Higuera, Francisco C Ferreira, Igor L Kaefer, Felipe A C Pessoa, Lúcio A Viana, Gediminas Valkiūnas, Ananías A Escalante, Erika M Braga, Nubia E Matta

{"title":"Phylogenetic assessment of Plasmodium (Saurocytozoon) tupinambi comb. nov. (Haemosporida, Plasmodiidae) in golden tegu lizards: shedding light on a long-standing Haemosporida taxonomic puzzle.","authors":"Amanda M Picelli, M Andreína Pacheco, Angie D Gonzalez, Pedro H O Pereira, Oscar A Rodriguez Fandiño, Lady J Correa Higuera, Francisco C Ferreira, Igor L Kaefer, Felipe A C Pessoa, Lúcio A Viana, Gediminas Valkiūnas, Ananías A Escalante, Erika M Braga, Nubia E Matta","doi":"10.1017/S0031182025000381","DOIUrl":"10.1017/S0031182025000381","url":null,"abstract":"Haemosporidians constitute a monophyletic group of vector-borne parasites that infect a wide range of vertebrate hosts, including Neotropical lizards. The remarkable diversity of these host-parasite associations and inadequate research on certain parasite groups have resulted in controversial haemosporidian taxonomy. Herein, we rediscover erythrocytic and non-erythrocytic haemosporidians infecting golden tegus (Tupinambis teguixin) from Brazil and Colombia. The erythrocyte-inhabiting parasite belongs to Plasmodium sp., and the non-erythrocytic form was identified as Saurocytozoon tupinambi, previously attributed to the Family Leucocytozoidae. These non-pigmented haemosporidian parasites do not multiply in the blood. The relationships between the Saurocytozoon and Leucocytozoidae species were discussed for many years, especially during the 1970s. However, cytochrome b (cytb) sequences and the mitochondrial genomes recovered for this species strongly support classifying this parasite as a Plasmodium taxon. Therefore, we proposed a new combination for this parasite, Plasmodium (Saurocytozoon) tupinambi comb. nov., where Saurocytozoon is retained as a subgenus due to its distinct morphology. These results reinforce that a broader definition of Plasmodiidae must include saurian parasites that develop non-pigmented leucocytozoid-like gametocytes.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"583-601"},"PeriodicalIF":2.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12278016/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143731233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The history of entamoebiasis. 内阿米巴病病史。

IF 2.1 3区医学

Parasitology Pub Date : 2025-05-01 DOI: 10.1017/S0031182025100279

Dietmar Steverding

引用次数: 0

Cheilospirura hamulosa (Nematoda: Acuariidae) infection in indigenous chickens in Bangladesh: epidemiology, pathology and anthelmintic efficacy. 孟加拉本地鸡的沙棘毛螺旋体感染：流行病学、病理学和驱虫效果。

IF 2.1 3区医学

Parasitology Pub Date : 2025-04-01 DOI: 10.1017/S0031182025000319

Akter Shirin, Nusrat Nadia, Md Shahadat Hossain, Sharmin Shahid Labony, Sumaya Naznin Ritu, Md Haydar Ali, Umme Razia Islam, Romana Parvin, Sadia Afroz Esha, Anita Rani Dey, Md Mahmudul Alam, Mohammad Zahangir Alam, Md Abdul Alim, Anisuzzaman

{"title":"Cheilospirura hamulosa (Nematoda: Acuariidae) infection in indigenous chickens in Bangladesh: epidemiology, pathology and anthelmintic efficacy.","authors":"Akter Shirin, Nusrat Nadia, Md Shahadat Hossain, Sharmin Shahid Labony, Sumaya Naznin Ritu, Md Haydar Ali, Umme Razia Islam, Romana Parvin, Sadia Afroz Esha, Anita Rani Dey, Md Mahmudul Alam, Mohammad Zahangir Alam, Md Abdul Alim, Anisuzzaman","doi":"10.1017/S0031182025000319","DOIUrl":"10.1017/S0031182025000319","url":null,"abstract":"Helminth infection is highly prevalent in indigenous chickens reared in semi-scavenging/ scavenging systems in Bangladesh. Here, we estimated the prevalence of gizzard worm infection in indigenous chickens, the detection of the worm-induced pathologies, the development of ex vivo cultural protocol, and anthelmintic efficacy. We randomly collected and examined 390 chickens and isolated worms from the gizzard and proventriculus. The isolated worms were identified as Cheilospirura hamulosa Diesing, 1861. The overall prevalence of C. hamulosa was 33.1% (129 out of 390). Prevalence of the worm was almost similar in both sexes but significantly (p <0.05) higher in adult chickens (44.3%) and in the summer season (47.1%). In heavy infections, C. hamulosa destroyed the muscular layer of the gizzard. The presence of brown necrotic tissues and curd-like caseous materials was detected in the affected gizzards. In severe cases, the horny lining of the gizzard was inflamed, necrotized and marked by multiple holes and brick-red colored spots. Liquefied, fetid materials oozed out from the muscular layer in extensive cases. Histopathological examination showed marked infiltrations of eosinophils. In serum-supplemented M199 and DMEM, adult C. hamulosa survived well and reproduced. Levamisole (LEV) and ivermectin (IVM) efficiently killed the worm. However, albendazole (ABZ), mebendazole (MBZ) and piperazine (PPZ) did not kill the worms. Our results suggest that C. hamulosa is highly prevalent in semi-scavenging chickens in Bangladesh. LEV and IVM can be used to treat and control the infection in chickens.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"366-373"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12186552/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143721046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0