Parasitology最新文献_第6页

Integrative taxonomy approach to the study of parasitic ergasilids (Cyclopoida: Ergasilidae) of fishes from the Pardo River, Brazil with a redescription of Rhinergasilus piranhus Boeger and Thatcher, 1988 and a molecular phylogeny for Ergasilidae. 用综合分类法研究巴西帕尔多河鱼类中寄生的麦角虫（旋毛虫科：Ergasilidae），重新描述Rhinergasilus piranhus Boeger和Thatcher，1988年，以及麦角虫科的分子系统发育。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-26 DOI: 10.1017/S003118202400129X

Rodrigo Bravin Narciso, Nico J Smit, Gilmar Perbiche-Neves, Reinaldo José da Silva

{"title":"Integrative taxonomy approach to the study of parasitic ergasilids (Cyclopoida: Ergasilidae) of fishes from the Pardo River, Brazil with a redescription of Rhinergasilus piranhus Boeger and Thatcher, 1988 and a molecular phylogeny for Ergasilidae.","authors":"Rodrigo Bravin Narciso, Nico J Smit, Gilmar Perbiche-Neves, Reinaldo José da Silva","doi":"10.1017/S003118202400129X","DOIUrl":"https://doi.org/10.1017/S003118202400129X","url":null,"abstract":"Brazil has the richest biodiversity of Ergasilidae on Earth, with 76 species in 19 genera. However, several authors suggested that there is still great potential for discoveries, especially regarding genetic data that are still scarce for ergasilids from this region. To expand our knowledge of this taxon, we conducted an integrative study involving morphological (light and scanning electron microscopy) and molecular analyses of ergasilids from fishes sampled in the Pardo River, São Paulo State, Brazil. Two ergasilid species were found, Gamispatulus schizodontis and Rhinergasilus piranhus parasitizing the nostrils of 5 fish species (native and exotic): (i) R. piranhus from Astyanax lacustris; Cyphocharax modestus; Coptodon rendalli; Psalidodon bockmanni; and (ii) G. schizodontis from Serrasalmus maculatus. Additionally, we redescribed R. piranhus herein based on novelties and discrepancies found in the antennules, antennae, body segments and ornamentation of the swimming legs. Novel molecular data of ribosomal (18S and 28S rDNA) and/or mitochondrial (cox 1) genes were provided for both species and the phylogenetic relationships among the ergasilids were tested. Relationships between species/genera are still uncertain in Ergasilidae, but it was possible to verify the formation of 5 well-supported terminal clades – i.e. including a clade formed only by Neotropical species. More molecular data are needed to test this hypothesis, but the clades observed here represent good targets for future taxonomic revisions. The occurrence of R. piranhus specimens in the introduced fish, Co. rendalli can indicate (for the first time) host switching in this parasite species and spillback from native to introduced hosts.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-24"},"PeriodicalIF":2.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142716830","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

Distribution and evidence of co-infection of the two microsporidian parasites Astathelohania contejeani and Nosema austropotamobii in Austropotamobius pallipes complex in Northern and Central Italy. 两种微孢子虫寄生虫 Astathelohania contejeani 和 Nosema austropotamobii 在意大利北部和中部 Austropotamobius pallipes 复合物中的分布和共同感染证据。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-21 DOI: 10.1017/S0031182024001525

Gianluca Fea, Daniela Ghia, Andrea Basso, Valentina Paolini, Roberto Sacchi, Tobia Pretto

{"title":"Distribution and evidence of co-infection of the two microsporidian parasites Astathelohania contejeani and Nosema austropotamobii in Austropotamobius pallipes complex in Northern and Central Italy.","authors":"Gianluca Fea, Daniela Ghia, Andrea Basso, Valentina Paolini, Roberto Sacchi, Tobia Pretto","doi":"10.1017/S0031182024001525","DOIUrl":"10.1017/S0031182024001525","url":null,"abstract":"Austropotamobius pallipes complex is an endangered freshwater crayfish species in Europe and the assessment of the health status of its wild populations is essential for conservation purposes. The two microsporidia Astathelohania contejeani and Nosema austropotamobii have been reported to cause in A. pallipes complex a chronic parasitic infection, known as ‘porcelain disease’, which reduces population fitness and leads the host to death. Due to the similar macroscopic signs produced, molecular biology analyses are required to unambiguously distinguish between these microsporidia. Focusing on A. pallipes complex populations located in Northern and Central Italy, the present study provides an evaluation of prevalence and distribution of A. contejeani and N. austropotamobii, and investigates the variables affecting the probability of detecting infected specimens during a survey (e.g. sex, crayfish density, longitude). Microsporidia were identified in 12 populations among the 42 monitored from 2011 to 2017, with an average prevalence of 3.12% for A. contejeani and 3.60% for N. austropotamobii, the latter being reported in a wider area than previously documented (from Lombardy to Liguria Regions). Notably, crayfish co-infected by both microsporidia were also detected in 4 populations. Moreover, it was observed that the probability of detecting a crayfish with a microsporidian infection significantly increased eastwards in the studied area, especially for N. austropotamobii. Our distribution map for microsporidiosis, combined with molecular screening, will be useful for planning breeding and translocation efforts for A. pallipes complex populations.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682422","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

Exploring South Africa's hidden marine parasite diversity: two new marine Ergasilus species (Copepoda: Cyclopoida: Ergasilidae) from the Evileye blaasop, Amblyrhynchote honckenii (Bloch). 探索南非隐蔽的海洋寄生虫多样性：来自鳗鲡（Evileye blaasop，Amblyrhynchote honckenii (Bloch)）的两个新的海洋厄加斯罗（Ergasilus）物种（Copepoda: Cyclopoida: Ergasilidae）。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-21 DOI: 10.1017/S0031182024001550

Linda van der Spuy, Rodrigo B Narciso, Kerry A Hadfield, Victor Wepener, Nico J Smit

引用次数: 0

Parasite species co-occurrence patterns on North American red squirrels (Tamiasciurus hudsonicus). 北美红松鼠（Tamiasciurus hudsonicus）寄生虫物种共存模式。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-18 DOI: 10.1017/S0031182024001513

Jasmine S M Veitch, Jeff Bowman, J Dawson Ketchen, Albrecht I Schulte-Hostedde

{"title":"Parasite species co-occurrence patterns on North American red squirrels (Tamiasciurus hudsonicus).","authors":"Jasmine S M Veitch, Jeff Bowman, J Dawson Ketchen, Albrecht I Schulte-Hostedde","doi":"10.1017/S0031182024001513","DOIUrl":"10.1017/S0031182024001513","url":null,"abstract":"Parasite species interactions, host biology traits, and external environmental factors can drive co-occurrence patterns between parasite species. We investigated co-occurrence patterns between three ectoparasite species (mite (Neotrombicula harperi), and fleas (Orchopeas caedens and Ceratophyllus vison)) of North American red squirrels (Tamiasciurus hudsonicus). We evaluated (1) whether ectoparasites of red squirrels exhibit non-random co-occurrence patterns, and (2) the contribution of host and external environmental factors to parasite co-occurrence. Bayesian ordination and regression analysis (boral) revealed random associations between parasite species pairs when accounting for host and external environmental factors. However, the mite N. harperi exhibited a negative association with the flea O. caedens and positive association with the flea C. vison linked to temporal patterns of occurrence. Our data suggests that parasites of the investigated population of red squirrels tend to form associations based on temporal trends in infestation rather than species interactions. Further experimentation should investigate the role of additional factors on parasite co-occurrence patterns, such as temperature, precipitation, and humidity.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142648872","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 study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa. 对智利巴塔哥尼亚地区瓜纳科动物（Lama guanicoe）中粒棘球蚴流行情况的研究意外地揭示了 Taenia omissa 的最南端界限。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-18 DOI: 10.1017/S0031182024001501

Cristian A Alvarez Rojas, Juan Francisco Alvarez, Juliana Iglesias, Anson V Koehler, Cristian Bonacic

{"title":"Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa.","authors":"Cristian A Alvarez Rojas, Juan Francisco Alvarez, Juliana Iglesias, Anson V Koehler, Cristian Bonacic","doi":"10.1017/S0031182024001501","DOIUrl":"10.1017/S0031182024001501","url":null,"abstract":"This study presents the first detection of Taenia omissa metacestodes in guanaco (Lama guanicoe) within the Chilean Patagonia, marking the southernmost record of natural infection in an intermediate host on the continent. Taenia omissa was found in the continental part of the Magallanes region where the top predators are pumas (Puma concolor). Conversely, all metacestodes found in guanacos collected from Tierra del Fuego Island, where no pumas exist, were identified solely as Echinococcus granulosus sensu stricto. Additionally, this research highlights a tissue preference of T. omissa for liver, contrasting with E. granulosus, which predominantly affects the lungs in guanacos. We also report the infection of T. pisiformis in 1 guanaco. Our findings emphasize the need for accurate identification of metacestodes during meat inspection in an area where T. omissa and E. granulosus overlap. This research also contributes to increase the knowledge of parasite–host dynamics in wildlife and underscores the importance of considering broader spectrum intermediate hosts in the epidemiology of parasitic infections.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142648874","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

Aonchotheca annulosa and Aonchotheca murissylvatici, which is which? A reappraisal of the gastrointestinal Aonchotheca (Nematoda: Capillariidae) species common in wood mice and bank voles. Aonchotheca annulosa 和 Aonchotheca murissylvatici，哪个是哪个？重新评估木鼠和银行田鼠常见的胃肠道龙线虫（线虫纲：Capillariidae）种类。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-15 DOI: 10.1017/S0031182024001471

Jerzy M Behnke, Joseph A Jackson

{"title":"Aonchotheca annulosa and Aonchotheca murissylvatici, which is which? A reappraisal of the gastrointestinal Aonchotheca (Nematoda: Capillariidae) species common in wood mice and bank voles.","authors":"Jerzy M Behnke, Joseph A Jackson","doi":"10.1017/S0031182024001471","DOIUrl":"10.1017/S0031182024001471","url":null,"abstract":"Wood mice (Apodemus sylvaticus) and bank voles (Myodes glareolus) are often employed as natural study models in infectious disease ecology. Yet the identities of some elements of their parasite fauna have been subject to long-standing confusion. One instance of this relates to 2 nominal species of the capillariid nematode genus Aonchotheca: Aonchotheca annulosa (Dujardin, 1845) and A. murissylvatici (Diesing, 1851). Through literature review, analysis of recorded host- and site-specificity and tracing of taxonomic precedence, it is possible to confirm that A. annulosa is a valid species with a spicule c. 1000 microns long, a small intestinal site of infection and a wide host range centred in murine rodents (with A. sylvaticus the most common host). On the other hand, tracing the provenance of A. murissylavtici through to the works of the early naturalists reveals it is best assigned as a nomen nudum (lacking sufficient establishing description) or a junior synonym of A. annulosa and does not have precedence for the other Aonchotheca morphotype commonly found in Eurasian rodents. The first description consonant with this other morphotype, which has a short spicule (200–250 microns in length) and occurs primarily in the stomach of bank voles and other cricetids, was as Capillaria halli by Kalantarian in 1924. We thus recommend the suppression of A. murissyvatici in favour of Aonchotheca halli (Kalantarian, 1924) for this gastric-specialist short-spicule morphotype, particularly as the use of the A. murissylvatici name and its variants has previously been associated with substantial inconsistency and misidentification with A. annulosa.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142625496","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 scoping review of transmission models for soil-transmitted helminth infections to underpin the development of a transmission model for Strongyloides stercoralis. 对土壤传播蠕虫感染的传播模式进行范围审查，以支持开发盘尾丝虫的传播模式。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-15 DOI: 10.1017/S0031182024001392

Mackrina Winslow, Juan Pablo Villanueva-Cabezas, Vito Colella, Patricia T Campbell

{"title":"A scoping review of transmission models for soil-transmitted helminth infections to underpin the development of a transmission model for Strongyloides stercoralis.","authors":"Mackrina Winslow, Juan Pablo Villanueva-Cabezas, Vito Colella, Patricia T Campbell","doi":"10.1017/S0031182024001392","DOIUrl":"10.1017/S0031182024001392","url":null,"abstract":"Soil-transmitted helminth (STH) infections afflict people worldwide, especially in tropical and subtropical regions. Strongyloides stercoralis is distinctive from other STH nematodes by its complex life cycle features of autoinfection, parthenogenesis, and environmental reproduction. This scoping review aims to identify the structures, features, and techniques employed in existing STH models, emphasizing their potential application in describing S. stercoralis infection dynamics. A comprehensive search was conducted in the Medline, Embase, and Scopus databases for studies published until 14 June 2024. A total of 47 studies presenting a new model or novel adaptation of an existing model to human STH infection transmission were identified: only one described S. stercoralis transmission in humans. The identified models were predominantly deterministic and focused on the dynamics of mean worm load within hosts and the infectiousness of the environmental reservoir. One model addressed transmission in multi-host scenarios, as not all STH transmission cycles involve multiple hosts. Models were frequently used to simulate the effectiveness of mass drug administration, including drug efficacy and treatment coverage, while water, sanitation, and hygiene (WASH), health education, and vaccination were less explored. Given the limitation of individual-level data, compartmental models may be a reasonable starting point for S. stercoralis transmission. For a comprehensive understanding, incorporating parasite life cycle features into the model, exploring multi-host dynamics, including a diverse range of host heterogeneities, and assessing the impact of climatic factors like rainfall and land surface temperature on parasite survival in the environment may be beneficial, especially in settings where their importance is notable.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-14"},"PeriodicalIF":2.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142625778","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

Host and geographically related genetic variation in species of Cloacina (Nematoda: Strongyloidea) from western and eastern grey kangaroos, Macropus fuliginosus and M. giganteus (Marsupialia: Macropodidae). 西部和东部灰袋鼠（Macropus fuliginosus 和 M.giganteus，Marsupialia: Macropodidae）Cloacina（线虫纲：Strongyloidea）物种的寄主和地理相关遗传变异。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-15 DOI: 10.1017/S0031182024001458

Shane Gerald Middleton, Anson Koehler, Ian Beveridge

{"title":"Host and geographically related genetic variation in species of Cloacina (Nematoda: Strongyloidea) from western and eastern grey kangaroos, Macropus fuliginosus and M. giganteus (Marsupialia: Macropodidae).","authors":"Shane Gerald Middleton, Anson Koehler, Ian Beveridge","doi":"10.1017/S0031182024001458","DOIUrl":"10.1017/S0031182024001458","url":null,"abstract":"Specimens of Cloacina artemis, C. expansa, C. hera, C. hermes, C. hestia, C. magnipapillata, C. obtusa and C. selene, which occur in both of the closely related species of grey kangaroos, Macropus fuliginosus and M. giganteus, were found to differ genetically based on sequence data derived from the internal transcribed spacers (ITS-1, ITS-2) of ribosomal DNA. The extent of differences varied from a single base pair in C. expansa, to 32 in C. hestia. In the case of C. hera, C. hestia and C. magnipapillata, separate genotypes were found in M. fuliginosus and M. giganteus. With C. artemis, C. expansa, C. obtusa and C. selene, nematode genotypes did not correspond with host distributions. In C. hermes, two genotypes were detected but they were not related phylogenetically. The data provide evidence suggestive of genetic differentiation in most of the nematode species potentially associated with host speciation, but with differing degrees of genetic differentiation and different associations with the two host species possibly related to changes in the geographical distribution of the hosts over time.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-15"},"PeriodicalIF":2.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142625790","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

Nosemosis negatively affects honeybee survival: experimental and meta-analytic evidence. 鼻疽对蜜蜂存活率的负面影响：实验和元分析证据。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-15 DOI: 10.1017/S0031182024001446

Monika Ostap-Chec, Jessica Cait, R Wilder Scott, Aneta Arct, Dawid Moroń, Marcin Rapacz, Krzysztof Miler

{"title":"Nosemosis negatively affects honeybee survival: experimental and meta-analytic evidence.","authors":"Monika Ostap-Chec, Jessica Cait, R Wilder Scott, Aneta Arct, Dawid Moroń, Marcin Rapacz, Krzysztof Miler","doi":"10.1017/S0031182024001446","DOIUrl":"10.1017/S0031182024001446","url":null,"abstract":"Nosemosis, caused by microsporidian parasites of the genus Nosema, is considered a significant health concern for insect pollinators, including the economically important honeybee (Apis mellifera). Despite its acknowledged importance, the impact of this disease on honeybee survivorship remains unclear. Here, a standard laboratory cage trial was used to compare mortality rates between healthy and Nosema-infected honeybees. Additionally, a systematic review and meta-analysis of existing literature were conducted to explore how nosemosis contributes to increased mortality in honeybees tested under standard conditions. The review and meta-analysis included 50 studies that reported relevant experiments involving healthy and Nosema-infected individuals. Studies lacking survivorship curves or information on potential moderators, such as spore inoculation dose, age of inoculated bees, or factors that may impact energy expenditure, were excluded. Both the experimental results and meta-analysis revealed a consistent, robust effect of infection, indicating a threefold increase in mortality among the infected group of honeybee workers (hazard ratio for infected individuals = 3.16 [1.97–5.07] and 2.99 [2.36–3.79] in the experiment and meta-analysis, respectively). However, the meta-analysis also indicated high heterogeneity in the effect magnitude, which was not explained by our moderators. Furthermore, there was a serious risk of bias within studies and potential publication bias across studies. The findings underscore knowledge gaps in the literature. It is stressed that laboratory cage trials should be viewed as an initial step in evaluating the impact of Nosema on mortality and that complementary field and apiary studies are essential for identifying effective treatments to preserve honeybee populations.","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-13"},"PeriodicalIF":2.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142625807","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

Mitogenomics of the zoonotic parasite Echinostoma miyagawai and insights into the evolution of tandem repeat regions within the mitochondrial non-coding control region. 人畜共患病寄生虫 Echinostoma miyagawai 的有丝分裂基因组学以及线粒体非编码控制区串联重复区进化的启示。

IF 2.1 3区医学

Parasitology Pub Date : 2024-11-14 DOI: 10.1017/S0031182024001422

Linh Thi Khanh Pham, Dong Van Quyen, Weerachai Saijuntha, Huong Thi Thanh Doan, Thanh Hoa Le, Scott P Lawton

引用次数: 0