Journal of Parasitology最新文献_第7页

COSPECIATION PATTERNS OF TWO GROUPS OF CHEWING LICE (INSECTA: PHTHIRAPTERA: ISCHNOCERA AND AMBLYCERA) INFESTING ASIAN SONGBIRDS (AVES: PASSERIFORMES). 侵染亚洲鸣禽的两组咀嚼虱（昆虫目：刺翅目：短翅目和短翅目）的合作模式。

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-11-01 DOI: 10.1645/24-87

Alexandra A Grossi, Chunpo Tian, Lujia Lei, Fasheng Zou, Daniel R Gustafsson

{"title":"COSPECIATION PATTERNS OF TWO GROUPS OF CHEWING LICE (INSECTA: PHTHIRAPTERA: ISCHNOCERA AND AMBLYCERA) INFESTING ASIAN SONGBIRDS (AVES: PASSERIFORMES).","authors":"Alexandra A Grossi, Chunpo Tian, Lujia Lei, Fasheng Zou, Daniel R Gustafsson","doi":"10.1645/24-87","DOIUrl":"10.1645/24-87","url":null,"abstract":"Cospeciation has been observed multiple times between parasites and their hosts. Here we compare the phylogeny of 2 different groups of chewing lice (Phthiraptera), one known for being host specific (Amblycera: Myrsidea) and one known for including many generalist species (Ischnocera: Brueelia-complex, specifically Guimaraesiella and Priceiella) with that of their songbird hosts (Passeriformes), which are participants in mixed-species feeding flocks in South China. Using event- (Jane) and distance-based (ParaFit) analyses we found that both groups of lice have phylogenies that are more similar than by chance to those of their hosts. However, more cospeciation and host-switching events were inferred for the Myrsidea data set, whereas more duplication events and losses were inferred for the Brueelia-complex data set. Even though these louse groups are found on roughly the same host species, the differences in sorting events may be linked to the different modes of dispersal. Whereas both groups transfer by direct contact, phoresy is recorded only in lice belonging to the Brueelia-complex.","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"110 6","pages":"649-665"},"PeriodicalIF":1.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142769892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

CLITELLATE (ANNELIDA: CLITELLATA) PARASITES AND PREDATORS OF NORTH AMERICAN HERPETOFAUNA: CHECKLIST OF SPECIES, IDENTIFICATION KEY, AND A NEW RECORD FOR MEXICO. Clitellate (annelida: clitellata) parasites and predators of north American herpetofauna: checklist of species, identification key, and a new record for mexico.

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-11-01 DOI: 10.1645/24-12

Manuel De Luna, Roberto García-Barrios, Diane P Barton, Leonardo García-Vázquez

引用次数: 0

TAXES OF DICYEMIDS (PHYLUM DICYEMIDA). 双胞动物（双胞动物门）的税种。

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-10-01 DOI: 10.1645/24-39

Naoki Hisayama, Yuto Takeuchi, Hidetaka Furuya

{"title":"TAXES OF DICYEMIDS (PHYLUM DICYEMIDA).","authors":"Naoki Hisayama, Yuto Takeuchi, Hidetaka Furuya","doi":"10.1645/24-39","DOIUrl":"10.1645/24-39","url":null,"abstract":"Dicyemids (Phylum Dicyemida) are endosymbionts present in the kidneys of benthic cephalopods. They usually consist of 10 to 40 cells and are characterized by 2 distinct body types: vermiform individuals and infusoriform larvae. Vermiform individuals remain attached to the internal surface of the host's renal appendages, while infusoriform larvae leave the renal sac to search for a new host. To investigate how dicyemids respond to various host and environmental cues, we evaluated phototaxis, chemotaxis, thigmotaxis, and rheotaxis responses of vermiform individuals and infusoriform larvae of 2 dicyemid species in a laboratory setting. Vermiform individuals did not exhibit phototaxis and chemotaxis to the major components of the host: urine, tissue fluids, or extracts of the host gills. However, they showed positive thigmotaxis and positive rheotaxis to slow water flow, probably contributing to enabling attachment to the renal appendages and remaining in the renal sac, respectively. The infusoriform larvae exhibited negative chemotaxis to host blood and negative thigmotaxis, but there was no evidence of phototaxis and rheotaxis. Negative thigmotaxis may facilitate the release of infusoriform embryos from the renal appendages. Negative chemotaxis to the host blood suggests that the infusoriform larvae do not enter through the vascular system to gain access to the renal sac, so the process by which infusoriform larvae enter the cephalopod host is yet to be determined.","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"110 5","pages":"506-515"},"PeriodicalIF":1.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142468150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

AVIAN HAEMOSPORIDIANS IN GREATER SCAUP (AYTHYA MARILA) AND LESSER SCAUP (AYTHYA AFFINIS) FROM WISCONSIN. 威斯康辛州大翘嘴鸊（aythya marila）和小翘嘴鸊（aythya affinis）的鸟类血孢子虫。

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-10-01 DOI: 10.1645/23-109

Sarah A Orlofske, Gina M Magro, Jeffrey A Bell, Vasyl V Tkach, Bruce Urben, Robert C Jadin

{"title":"AVIAN HAEMOSPORIDIANS IN GREATER SCAUP (AYTHYA MARILA) AND LESSER SCAUP (AYTHYA AFFINIS) FROM WISCONSIN.","authors":"Sarah A Orlofske, Gina M Magro, Jeffrey A Bell, Vasyl V Tkach, Bruce Urben, Robert C Jadin","doi":"10.1645/23-109","DOIUrl":"10.1645/23-109","url":null,"abstract":"Avian haemosporidians are a diverse group of protozoan parasites that infect a wide range of host species. Waterfowl are an ecologically and economically important group of hosts that have been underrepresented in studies of haemosporidians. Diving ducks have unique life history traits, and morphological, behavioral, and dietary differences separate them from more common dabbling ducks. Greater scaup (Aythya marila) and lesser scaup (Aythya affinis) are closely related diving ducks with declining population trends in North America. To better understand the diversity of haemosporidians within diving ducks and factors related to host infections in scaup, we surveyed 82 hunter-donated waterfowl from 8 species of divers, sea ducks, and dabblers from Green Bay, Wisconsin from 2019 to 2021. We used molecular detection methods and phylogenetic and statistical analyses to describe the diversity, host associations, and prevalence of haemosporidians. We detected 14 unique genetic lineages of haemosporidians, including 4 novel lineages. We identified at least 1 lineage of haemosporidian in each of the 8 host species of divers, sea ducks, and dabblers examined. Lesser scaup had more diverse haemosporidian communities than did greater scaup, but lineages showed no clustering among these hosts when incorporated in phylogenetic analyses with lineages from other Nearctic waterfowl. Female lesser scaup had the highest infection prevalence, but there was no effect of host age or year of sampling. Our findings underscore the importance of species and sex differences that could lead to a higher risk of infections. Our results also fill an important geographical sampling gap for haemosporidians along a key migratory route. Increased monitoring of haemosporidians in waterfowl could contribute to insights into parasite evolution and ecology and the conservation and management of host populations.","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"110 5","pages":"445-454"},"PeriodicalIF":1.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142289614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

LOUSY ASSOCIATIONS: SUCKING LICE (PHTHIRAPTERA: ANOPLURA) PARASITIZING RODENTS AND LAGOMORPHS IN THE DESERT NATIONAL WILDLIFE REFUGE, NEVADA. 糟糕的联系：寄生于内华达州沙漠国家野生动物保护区啮齿动物和袋鼬的吸虱（phthiraptera: anoplura）。

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-10-01 DOI: 10.1645/24-80

Sara B Weinstein, John P Dumbacher, Lance A Durden

引用次数: 0

SEROPREVALENCE OF TOXOPLASMA GONDII IN GOATS FROM SOUTHWESTERN MISSISSIPPI, USA. 美国密西西比州西南部山羊的弓形虫血清流行率。

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-10-01 DOI: 10.1645/24-103

Alexander D W Acholonu, Jamela S Alexander

引用次数: 0

EVALUATION OF THE CYSTICIDAL ACTIVITY OF CHLOROCRESOL AGAINST ACANTHAMOEBA POLYPHAGA. 评估氯甲酚对多棘阿米巴的杀囊活性。

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-10-01 DOI: 10.1645/24-15

Orlanath Phendinvay, Thaksaporn Thongseesuksai, Thidarut Boonmars, Porntip Laummaunwai

{"title":"EVALUATION OF THE CYSTICIDAL ACTIVITY OF CHLOROCRESOL AGAINST ACANTHAMOEBA POLYPHAGA.","authors":"Orlanath Phendinvay, Thaksaporn Thongseesuksai, Thidarut Boonmars, Porntip Laummaunwai","doi":"10.1645/24-15","DOIUrl":"10.1645/24-15","url":null,"abstract":"Chlorocresol has antibacterial and antifungal properties, yet its effectiveness in eradicating Acanthamoeba spp. remains unexplored. Acanthamoeba species trophozoites are usually sensitive to biocides, whereas cysts tend to be more resistant. This study aimed to evaluate the cysticidal activity of chlorocresol against Acanthamoeba polyphaga. Chlorocresol concentrations of 0.02, 0.04, and 0.08% were prepared and A. polyphaga cysts were incubated at room temperature (28-37 C) for 1, 24, 48, and 72 hr at each concentration. Cyst viability was evaluated using trypan blue staining and the percentage of nonviable cysts was calculated. For qualification assays, treated cysts were cultured on nonnutrient agar medium coated with Escherichia coli, incubated at 30 C, observed under a stereomicroscope for 30 days, and inoculated into peptone-yeast extract-glucose medium at 30 C for 72 hr. The results revealed that the A. polyphaga cysts were susceptible to 0.02, 0.04, and 0.08% chlorocresol. Chlorocresol made a significant difference in viability (P < 0.001) compared with the nontreated control for the same incubation time. This is the first study to examine the efficacy of chlorocresol against A. polyphaga cysts and it was highly effective. Chlorocresol could thus serve as an alternative chemical disinfectant for the eradication of A. polyphaga cysts as well as a prophylactic against transmission of other pathogenic microorganisms for which Acanthamoeba species can act as a carrier.","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"110 5","pages":"423-427"},"PeriodicalIF":1.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142154441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

DEVELOPMENT OF A RAPID SNP PCR ASSAY TO DIFFERENTIATE BETWEEN EUROPEAN AND NORTH AMERICAN HAPLOTYPES OF ECHINOCOCCUS MULTILOCULARIS. 开发一种快速 snp pcr 检测方法，以区分多形性棘球蚴的欧洲和北美单倍型。

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-10-01 DOI: 10.1645/24-27

Corinne L Conlon, Christopher M Whipps

{"title":"DEVELOPMENT OF A RAPID SNP PCR ASSAY TO DIFFERENTIATE BETWEEN EUROPEAN AND NORTH AMERICAN HAPLOTYPES OF ECHINOCOCCUS MULTILOCULARIS.","authors":"Corinne L Conlon, Christopher M Whipps","doi":"10.1645/24-27","DOIUrl":"10.1645/24-27","url":null,"abstract":"Herein we describe a single nucleotide polymorphism-specific polymerase chain reaction (PCR) assay to rapidly detect and differentiate variants belonging to the European and North American lineages of Echinococcus multilocularis in clinical samples. This is an extremely relevant and applicable test in North America because the range of E. multilocularis continues to expand across the continent and because of a rise in prevalence in wildlife, domestic animals, and humans. The endemic North American (NA) and introduced European (EU) variants are believed to have different pathogenic potentials, with the EU variants being more infective and pathogenic than the NA variants. The rise of the EU variants of E. multilocularis increases the risk of spillover from wildlife to humans because of its increased potential for infectivity. Current PCR-based diagnostics can detect E. multilocularis deoxyribonucleic acid (DNA), but DNA sequencing is required to identify the specific variant. Our assay provides a straightforward conventional PCR method to differentiate the NA and EU variants, and we suggest this same approach could be used for the diagnosis of other parasites or variants that are genetically very similar. As surveillance continues for E. multilocularis across North America, identifying the different genetic variants from different geographic regions will become essential to understanding the current epidemiological shift that the parasite is experiencing, as well as informing public health decisions in affected areas.","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"110 5","pages":"440-444"},"PeriodicalIF":1.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142289615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 ACANTHOBOTHRIUM (CESTODA: ONCHOPROTEOCEPHALIDEA), PARASITE OF THE GIANT ELECTRIC RAY NARCINE ENTEMEDOR JORDAN AND STARKS, 1895 (BATOIDEA: TORPEDINIFORMES) FROM MEXICO. A new species of acanthobothrium (cestoda: onchoproteocephalidea), parasite of the giant electric ray narcine entemedor jordan and starks, 1895 (batoidea: torpediniformes) from Mexico.

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-10-01 DOI: 10.1645/24-17

Erick Rodríguez-Ibarra, Berenice Adán-Torres, Fernando Ruiz-Escobar, Gerardo Torres-Carrera

{"title":"A NEW SPECIES OF ACANTHOBOTHRIUM (CESTODA: ONCHOPROTEOCEPHALIDEA), PARASITE OF THE GIANT ELECTRIC RAY NARCINE ENTEMEDOR JORDAN AND STARKS, 1895 (BATOIDEA: TORPEDINIFORMES) FROM MEXICO.","authors":"Erick Rodríguez-Ibarra, Berenice Adán-Torres, Fernando Ruiz-Escobar, Gerardo Torres-Carrera","doi":"10.1645/24-17","DOIUrl":"10.1645/24-17","url":null,"abstract":"Spiral valves from specimens of the giant electric ray Narcine entemedor Jordan & Starks, 1895 were examined in search of tapeworms at 2 localities of the Mexican tropical Pacific Ocean. Acanthobothrium oceguerai n. sp. is described herein based on material from Ventanilla, Oaxaca and from Acapulco Bay, Guerrero. The new species is a category 6 species, distinguished by being apolytic, retaining proglottids on the strobila until they are gravid, having strobila of 166-322 proglottids, having a small scolex and very long bothridia relative to the scolex, and having abaxial prongs that are short and thin in comparison to the axial prongs, which are longer and more robust. Acanthobothrium oceguerai n. sp. can be differentiated from other members of category 6 by the hooks, which are shorter, more robust, and smaller than those of the other members of this category. The phylogenetic analysis based on the 28S rRNA locus placed Acanthobothrium oceguerai n. sp. as sister to an unidentified species of larval Acanthobothrium from Philadelphia, Pennsylvania. In addition, sequences of the mitochondrial cytochrome oxidase subunit I gene and nuclear 18S rDNA were generated to provide support for future taxon sampling. Acanthobothrium oceguerai n. sp. is the fifth species of cestode reported from N. entemedor in the tropical eastern Pacific.","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"110 5","pages":"521-533"},"PeriodicalIF":1.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

THIN AND ULTRATHIN STRUCTURE OF ENVELOPES OF STEPHANOSTOMUM BACCATUM (TREMATODA: ACANTHOCOLPIDAE) METACERCARIAE IN YELLOWFIN SOLE, LIMANDA ASPERA. 黄鳍鲽体内stephanostomum baccatum（颤形目：棘腹蝶形目）蜕膜的薄层和超薄结构。

IF 1 4区医学

Journal of Parasitology Pub Date : 2024-10-01 DOI: 10.1645/23-86

E M Skorobrekhova

{"title":"THIN AND ULTRATHIN STRUCTURE OF ENVELOPES OF STEPHANOSTOMUM BACCATUM (TREMATODA: ACANTHOCOLPIDAE) METACERCARIAE IN YELLOWFIN SOLE, LIMANDA ASPERA.","authors":"E M Skorobrekhova","doi":"10.1645/23-86","DOIUrl":"10.1645/23-86","url":null,"abstract":"The structure of the envelopes (capsule and cyst) surrounding metacercariae of Stephanostomum baccatum (Nicoll, 1907) in the second intermediate host, the yellowfin sole Limanda aspera (Pallas 1814), is examined with the methods of light and transmission electron microscopy. The cyst, presumably formed by secretions of the metacercarial tegument, consists of 2 layers: the outer, very thin layer of an electron-dense, finely granular substance and the inner layer composed of loose material of a moderate electron density that includes dense bodies varying in size, shape, and localization. The capsule, formed by the host's cells, is also organized into 2 distinct layers. The inner layer of the capsule is loose, consisting of evenly spaced debris of degenerated cells and lipid droplets with inclusions of intact macrophages between them. The outer layer of the capsule consists of parallel rows of cells arranged around the parasite, with fibroblasts and macrophages being dominant types and granulocytes and lymphocytes found in smaller numbers. Aggregations of collagen fibers are located in narrow spaces between the cells. The number of lipid droplets in the outer layer is significantly smaller than in the inner layer. The capsules formed around the examined trematodes have several structural features that distinguish them from those of S. baccatum and Stephanostomum sp. metacercariae recovered from other fishes of the family Pleuronectidae. The major morphological features of such capsules are the lack of epithelioid or giant multinucleated cells and the presence of numerous lipid droplets. Investigating the structural details of the envelopes surrounding metacercariae in trematodes, as well as other helminths, contributes to our scientific understanding of parasite biology, which can, in turn, have broader implications for understanding host-parasite interactions and evolutionary biology.","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"110 5","pages":"486-493"},"PeriodicalIF":1.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142381110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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