Journal of Helminthology最新文献_第8页

Anantrum gallopintoi sp. nov. (Bothriocephalidae Blanchard, 1849), a cestode parasite of the shorthead lizardfish Synodus scituliceps (Synodontidae) from the Pacific coast of Costa Rica. Anantrum gallopintoi sp.

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-11 DOI: 10.1017/S0022149X24000580

M Santoro, A López-Verdejo, F Occhibove, A Angulo, A Rojas, J Cortés, A Solano-Barquero

{"title":"Anantrum gallopintoi sp. nov. (Bothriocephalidae Blanchard, 1849), a cestode parasite of the shorthead lizardfish Synodus scituliceps (Synodontidae) from the Pacific coast of Costa Rica.","authors":"M Santoro, A López-Verdejo, F Occhibove, A Angulo, A Rojas, J Cortés, A Solano-Barquero","doi":"10.1017/S0022149X24000580","DOIUrl":"https://doi.org/10.1017/S0022149X24000580","url":null,"abstract":"A new species of bothriocephalid cestode in the genus Anantrum is described from the intestine of the shorthead lizardfish Synodus scituliceps from the north Pacific coast of Costa Rica. The new species is described based on an integrative taxonomic approach that includes the use of light and scanning electron microscopy, 28S rDNA sequencing, and phylogenetic analysis. Anantrum gallopintoi sp. nov. is the third known member of this genus and can be distinguished from A. tortum (Linton, 1905) and A. histocephalum Jensen & Heckmann, 1977 by a combination of morphological and ecological traits and, in particular, by having a vaginal sphincter, different number of testes, and different type host and type locality. The molecular analysis and the phylogenetic reconstructions supported its status as a new taxon placing it within a well-supported separate branch of Anantrum spp. subclade. According to the present finding, S. scituliceps represents a new host record and Costa Rica a new geographical record for Anantrum species, and, in general, for a bothriocephalid cestode.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e68"},"PeriodicalIF":1.3,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First report of a morulated Ascaridoidea (Nematoda) egg in an avian coprolite from the Paleogene of the Paraíba Valley, State of São Paulo, Brazil. 首次报道巴西圣保罗州帕拉伊巴山谷古近纪鸟类共生石中的蛔虫卵（线虫纲）。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-11 DOI: 10.1017/S0022149X24000610

G Macêdo do Carmo, A Hadassa da Silva Guilherme Luiz, J F Passos, S de Souza Lima, Hermínio I de Araújo-Júnior, F B Pereira

{"title":"First report of a morulated Ascaridoidea (Nematoda) egg in an avian coprolite from the Paleogene of the Paraíba Valley, State of São Paulo, Brazil.","authors":"G Macêdo do Carmo, A Hadassa da Silva Guilherme Luiz, J F Passos, S de Souza Lima, Hermínio I de Araújo-Júnior, F B Pereira","doi":"10.1017/S0022149X24000610","DOIUrl":"https://doi.org/10.1017/S0022149X24000610","url":null,"abstract":"Ascaridoidea (Nematoda) is a widespread superfamily of nematodes that comprises gastrointestinal parasites from all major groups of vertebrates. Although this taxon probably emerged in the Carboniferous, its Brazilian fossil record includes mostly eggs, found in ancient remains, collected in paleontological and archeological sites from the Mesozoic and Cenozoic Eras. The Tremembé Formation (Oligocene of the Taubaté Basin) has become an important source for paleoparasitological studies in avian coprolites during the third decade of the 21st century, with reports of eggs only at only a single cell stage, of embryonic development. Here we present the first egg of Ascaridoidea preserved containing morula, from a bird coprolite recovered from the shales of the Tremembé Formation. Three coprolites, from the outcrop of Aligra Comércio de Argila S/A, Taubaté municipality (State of São Paulo), were rehydrated and subjected to spontaneous sedimentation. Based on morphological and morphometric features and diet and zoopaleontological context, the trace fossils were assigned to piscivorous birds. The egg found showed morphological characteristics typical of Ascaridoidea: namely spherical form, ornamented, and somewhat thick shell. Moreover, this superfamily includes several taxa that infect piscivorous birds and fish in heteroxenous life cycles and produce eggs with similar features as the egg found in the present study. The paleoparasitological information associated with the paleofaunistic diversity of birds and fish from the Tremembé Formation, reveal that the ancient Brazilian paleoenvironments provided subsidies for the rise and success of nematodes infecting these animals during the Paleogene.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e60"},"PeriodicalIF":1.3,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","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 Creptotrema (Allocreadiidae) in Cambeva davisi (Siluriformes) from river streams in fragments of the Atlantic Rainforest, southern Brazil. 巴西南部大西洋热带雨林片段河流中的 Cambeva davisi（丝形目）Creptotrema（Allocreadiidae）新物种。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-11 DOI: 10.1017/S0022149X2400052X

A Aguiar, M B Ebert, G P Gomes, G M Teixeira, G A de Souza, R J da Silva

{"title":"A new species of Creptotrema (Allocreadiidae) in Cambeva davisi (Siluriformes) from river streams in fragments of the Atlantic Rainforest, southern Brazil.","authors":"A Aguiar, M B Ebert, G P Gomes, G M Teixeira, G A de Souza, R J da Silva","doi":"10.1017/S0022149X2400052X","DOIUrl":"https://doi.org/10.1017/S0022149X2400052X","url":null,"abstract":"We described Creptotrema cambeve n. sp. from the intestine of the Brazilian catfish Cambeva davisi (Haseman, 1911) (= Trichomycterus davisi) based on integrative analyses using morphological and molecular approaches. Creptotrema cambeve n. sp. closely resembles morphologically Creptotrema paraense Vicente, Santos & Souza, 1978, which was described from a siluriform fish in Northern Brazil; however, the two species differ mainly in the oral and ventral sucker sizes and the distribution of the vitellaria. The phylogenetic analyses of the 28S rDNA placed the sequences of the new species in a monophyletic clade together with all other Creptotrema spp. and as sister taxon of Creptotrema cruste Alcantara, Ebert, Ferreira-Silva, Forti, Morais, Pérez-Ponce de León & Silva, 2024, a parasite from a Brazilian anuran. Genetic divergences between the new species and other Creptotrema spp. varied from 0.2% to 4.3%, further corroborating the distinction of the new taxon. Creptotrema cambeve n. sp. is the 18th nominal Creptotrema species known from South America and the 22nd erected in the genus. This is the first study reporting a trematode in Cambeva spp. hosts and the second parasitological survey carried out for Ca. davisi, a poorly known small endemic fish.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e71"},"PeriodicalIF":1.3,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cactodera xinanensis n. sp. (Nematoda: Heteroderinae), a new species of cyst-forming nematode from Southwest China, with a key to the Genus Cactodera. Cactodera xinanensis n. sp. (Nematoda: Heteroderinae), a new species of cyst-forming nematode from Southwest China, with a key to the Genus Cactodera.

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-11 DOI: 10.1017/S0022149X24000415

C-H Ni, Q-Y Li, Z-F Yang, C-L Xu, H Xie

{"title":"Cactodera xinanensis n. sp. (Nematoda: Heteroderinae), a new species of cyst-forming nematode from Southwest China, with a key to the Genus Cactodera.","authors":"C-H Ni, Q-Y Li, Z-F Yang, C-L Xu, H Xie","doi":"10.1017/S0022149X24000415","DOIUrl":"https://doi.org/10.1017/S0022149X24000415","url":null,"abstract":"The cyst nematodes, subfamily Heteroderinae, are plant pathogens of worldwide economic significance. A new cyst nematode of the genus Cactodera within the Heteroderinae, Cactodera xinanensis n. sp., was isolated from rhizospheres of crops in the Guizhou and Sichuan provinces of southwest China. The new species was characterized by having the cyst with a length/width = 1.3 ± 0.1 (1.1-1.6), a fenestral diameter of 28.1 ± 4.3 (21.3-38.7) μm, vulval denticles present; second-stage juvenile with stylet 21.5 ± 0.5 (20.3-22.6) μm long, tail 59.4 ± 2.0 (55.9-63.8) μm long and hyaline region 28.7 ± 2.7 (25.0-36.3) μm long, lateral field with four incisures; the eggshell with punctations. The new species can be differentiated from other species of Cactodera by a longer tail and hyaline region of second-stage juveniles. Phylogenetic relationships within populations and species of Cactodera are given based on the analysis of the internal transcribed spacer (ITS-rRNA), the large subunit of the nuclear ribosomal RNA (28S-rRNA) D2-D3 region and the partial cytochrome oxidase subunit I (COI) gene sequences here. The ITS-rRNA, 28S-rRNA and COI gene sequences clearly differentiated Cactodera xinanensis n. sp. from other species of Cactodera. A key and a morphological identification characteristic table for the species of Cactodera are included in the study.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e69"},"PeriodicalIF":1.3,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Description of three new species of Gyrodactylus von Nordmann, 1832 (Monopisthocotylea: Gyrodactylidae) on Triplophysa species (Nemacheilidae) from Qinghai-Tibet Plateau. 描述来自青藏高原 Triplophysa species (Nemacheilidae) 上的 Gyrodactylus von Nordmann, 1832 (Monopisthocotylea: Gyrodactylidae) 的三个新种。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-11 DOI: 10.1017/S0022149X24000439

X Jin, M Li, D Zhang, H Zou, J Cai, K Amoah, G T Wang, W X Li

{"title":"Description of three new species of Gyrodactylus von Nordmann, 1832 (Monopisthocotylea: Gyrodactylidae) on Triplophysa species (Nemacheilidae) from Qinghai-Tibet Plateau.","authors":"X Jin, M Li, D Zhang, H Zou, J Cai, K Amoah, G T Wang, W X Li","doi":"10.1017/S0022149X24000439","DOIUrl":"https://doi.org/10.1017/S0022149X24000439","url":null,"abstract":"Three new species of Gyrodactylus were identified from the body surface of the Triplophysa species from the Qinghai-Tibet Plateau, Gyrodactylus triplorienchili n. sp. on Triplophysa orientalis in northern Tibet, G. yellochili n. sp. on T. sellaefer and T. scleroptera and G. triplsellachili n. sp. on T. sellaefer and T. robusta in Lanzhou Reach of the Yellow River. The three newly identified species share the nemachili group species' characteristic of having inturning hamulus roots. Gyrodactylus triplorienchili n. sp. shared a quadrate sickle heel and a thin marginal hook sickle, two morphological traits that set them apart from G. yellochili n. sp. However, they may be identified by the distinct shapes of the sickle base and marginal hook sickle point. Gyrodactylus triplsellachili n. sp. had much larger opisthaptoral hard part size than the other two species. The three new species show relatively low interspecific differences of 2.9-5.3% p-distance for ITS1-5.85-ITS2 rDNA sequences. Phylogenetic analysis indicated that the three new species formed a well-supported monophyletic group (bp = 99) with the other nemachili group species.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e70"},"PeriodicalIF":1.3,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Population dynamics of a South African isolate of Steinernema yirgalemense in vitro liquid culture, using egg yolk as protein source. 以蛋黄为蛋白质来源的南非分离株 Steinernema yirgalemense 体外液体培养的种群动态。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-06 DOI: 10.1017/S0022149X24000452

M D Dunn, A P Malan

{"title":"Population dynamics of a South African isolate of Steinernema yirgalemense in vitro liquid culture, using egg yolk as protein source.","authors":"M D Dunn, A P Malan","doi":"10.1017/S0022149X24000452","DOIUrl":"https://doi.org/10.1017/S0022149X24000452","url":null,"abstract":"The entomopathogenic nematode (EPN), Steinernema yirgalemense, is an effective biological control agent against a variety of important insect pests in South Africa. To develop a South African EPN product feasibly in South Africa, EPNs need to be mass-produced. This study aimed to record the population dynamics of S. yirgalemense with in vitro liquid production in shake flasks, with a protein source of powdered egg yolk. The Erlenmeyer flask results indicated variation between flasks, albeit still achieving high yields. The reasons for attaining such variability in the recovery, yield, and growth stages are unclear, hence requiring further studies seeking to increase consistency. The results obtained indicate that, when IJ recovery is low, yields are also low due to relatively few reproductive adults being present in solution, which, in turn, produces more offspring, which later converts to the desired infective juvenile used for product formulation development. For commercial viability, a consistent production system is required that produces predictable yields. This study showed comparable high yields achieved with the flasks and in an early-stage bioreactor setup, being a positive development for S. yirgalemense mass production. Prior to the bioreactor scale-up process, protocol of mass production, the population and growth dynamics of the nematodes in the flask environment requires understanding. This is a positive step, leading to the future commercialisation of a local EPN product.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e64"},"PeriodicalIF":1.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142583398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the diversity of freshwater fish trematodes from Laguna Escondida, Los Tuxtlas tropical rainforest, Mexico, using morphology and 28S rDNA sequences as barcodes. 利用形态学和 28S rDNA 序列作为条形码，评估墨西哥 Los Tuxtlas 热带雨林 Laguna Escondida 淡水鱼吸虫的多样性。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-05 DOI: 10.1017/S0022149X2400049X

Y Velázquez-Urrieta, M García-Varela, G Pérez-Ponce de León

{"title":"Assessing the diversity of freshwater fish trematodes from Laguna Escondida, Los Tuxtlas tropical rainforest, Mexico, using morphology and 28S rDNA sequences as barcodes.","authors":"Y Velázquez-Urrieta, M García-Varela, G Pérez-Ponce de León","doi":"10.1017/S0022149X2400049X","DOIUrl":"https://doi.org/10.1017/S0022149X2400049X","url":null,"abstract":"Despite a great effort made for almost 90 years, the diversity of freshwater fish trematodes in Mexico is still far from being fully known. The addition of molecular data to the description of trematode diversity in the last two decades added the potential to establish more robust species limits and a more accurate biodiversity estimation, but also led in some instances to the recognition of cryptic species complexes. Here, we used sequences of the large subunit of the nuclear ribosomal gene (28S rRNA) as barcodes, and morphological data, to assess the diversity of freshwater fish trematodes from a lake within a tropical rainforest. Eighty freshwater fish specimens of eight species were studied, and 120 trematode specimens were collected. Morphologically, specimens were allocated into nine genera; molecular phylogenetic analyses along with sequence divergence data provided evidence for recognising 11 trematode taxa, six adults and five metacercariae; six of them were identified to species level. Geographical distribution and host association patterns are briefly discussed for each trematode taxa.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e67"},"PeriodicalIF":1.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142576387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Narrowing gender gap in the research on echinococcosis and editorial contribution of women in parasitology journals. 缩小棘球蚴病研究中的性别差距以及妇女在寄生虫学期刊编辑工作中的贡献。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-05 DOI: 10.1017/S0022149X24000579

R Kaveh, N Ashrafhesari, S M Mousavi, M Fasihi Harandi

{"title":"Narrowing gender gap in the research on echinococcosis and editorial contribution of women in parasitology journals.","authors":"R Kaveh, N Ashrafhesari, S M Mousavi, M Fasihi Harandi","doi":"10.1017/S0022149X24000579","DOIUrl":"https://doi.org/10.1017/S0022149X24000579","url":null,"abstract":"Gender equity and authorship diversity are believed to be the essential parts of building a dynamic scientific atmosphere. The purpose of the present study was to determine the status of gender equity in research on echinococcosis and the editorial diversity in major parasitology journals over the past four decades. All articles were retrieved from major databases from the years 1980, 2000, 2010, 2015, and 2020. Journals belonging to the four quartiles of parasitology journals listed in the Journal Citation Report were selected, and the gender and region of each editorial member were identified. Among the 3583 first authors of the articles published in all selected years, 2236 (62.4%) were men, whereas 1040 (29%) were women. There was a significant increase in women's contributions as the first author, from 6.8% in 1980 to 35.8% in 2020 (P < .001). A greater gender gap was found for the senior authors, showing 2391 (66.7%) men and 837 (23.4%) women. The gender gap has been narrowed in most of the six regions of the world, particularly for the Western Pacific region, where the gender inequity had almost diminished in 2020; i.e. the man-woman ratios of the first and last authors from this region were 2.25 and 1.75 in 1980, reaching 1.04 and 0.97, in 2020, respectively. Our findings also indicated that articles authored by men received 2.5 to 3.1 times more citations than women authors. Gender distribution of the editors-in-chief, associate editors, and editorial board members across all quartiles showed that 78.7%, 69.5%, and 72.7% were men, respectively, and mostly affiliated with the European and American regions. Findings of the present study showed that gender inequity is still present and women researchers continue to be the minority in the field of parasitology, particularly in the research on echinococcosis.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e66"},"PeriodicalIF":1.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142576291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New record and phylogenetic assessment of Apopharynx bolodes (Braun, 1902) (Digenea: Psilostomidae), a parasite of Eurasian Coot Fulica atra Linnaeus, 1758 (Aves: Rallidae). Apopharynx bolodes (Braun, 1902) (Digenea: Psilostomidae)的新记录和系统发育评估，它是欧亚鸥Fulica atra Linnaeus, 1758 (Aves: Rallidae)的寄生虫。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-05 DOI: 10.1017/S0022149X24000543

S A Vlasenkov, L N Akimova, S G Sokolov

引用次数: 0

A new genus and species of Microphalloidea (Digenea), parasite of Peropteryx spp. (Chiroptera: Emballonuridae) from the Neotropical region of Mexico revealed by morphological and phylogenetic analyses. 通过形态学和系统发育分析发现墨西哥新热带地区寄生于Peropteryx spp.（Chiroptera: Emballonuridae）的Microphalloidea（Digenea）新属和新种。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2024-11-04 DOI: 10.1017/S0022149X24000531

N G Ruiz-Torres, D I Hernandez-Mena, L García-Prieto, L I Falcón, J A Panti-May, O Rico-Chávez

{"title":"A new genus and species of Microphalloidea (Digenea), parasite of Peropteryx spp. (Chiroptera: Emballonuridae) from the Neotropical region of Mexico revealed by morphological and phylogenetic analyses.","authors":"N G Ruiz-Torres, D I Hernandez-Mena, L García-Prieto, L I Falcón, J A Panti-May, O Rico-Chávez","doi":"10.1017/S0022149X24000531","DOIUrl":"10.1017/S0022149X24000531","url":null,"abstract":"The present study aims to describe a new genus and species of microphalloid digenean parasite of two species of bats of the genus Peropteryx from the Mexican Neotropics (in the states of Chiapas and Yucatán). Morphological and molecular data (28s rDNA ribosomal gene sequences) were used to study Digeneans. Sagittatrema zutzi gen. nov. sp., nov., is diagnosed morphologically by having a sagittiform body, a genital pore in the midline of the body, posterior to the ventral sucker, and a cirrus sac running through much of the diameter of the ventral sucker. The nine sequences generated from the 28S rDNA gene were used to examine the phylogenetic affinities of this new taxon within the superfamily Microphalloidea Ward, 1901, using Maximum Likelihood and Bayesian Inference analyses. Both analyses resulted in trees with similar topologies and formed a well-supported clade (Bt = 100; pp = 1) with the Sagittatrema sequences. Because of the new genus's phylogenetic position and that some sister families to the proposed taxa, like Pleurogenidae and Prosthogonimidae, are polyphyletic, we prefer to consider Sagittatrema as a genus incertae sedis within Microphalloidea. A full systematic review of microphalloids is needed to confirm their phylogenetic position.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e63"},"PeriodicalIF":1.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142568959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0