Systematic Parasitology最新文献

{"title":"Review of the genus Iphitrachelus Haliday (Hymenoptera: Platygastridae: Platygastrinae) with descriptions of three new species from India.","authors":"Veenakumari Kamalanathan, Peter Neerup Buhl, P Girish Kumar, Sreedevi Kolla, Satya Nand Sushil, Farmanur Rahman Khan, Prashanth Mohanraj","doi":"10.1007/s11230-025-10226-y","DOIUrl":"10.1007/s11230-025-10226-y","url":null,"abstract":"<p><p>The genus Iphitrachelus Haliday, 1835 has a world-wide distribution. These are small, gracile insects, rare in museum collections. Eleven species of Iphitrachelus have so far been described from different parts of the world. Of the four Oriental species, three (I. lar Haliday, 1835, I. shajii Anjana and Rajmohana, 2017, and I. neogracilis Anjana and Rajmohana, 2017) are from India. Three new species of Iphitrachelus - I. alpatanu Veenakumari and Buhl sp. nov., I. phenalus Veenakumari and Buhl sp. nov. and I. vakratunda Veenakumari and Buhl sp. nov. are described from India. Iphitrachelus shajii is treated as a junior synonym of I. lar. Iphitrachelus masneri Buhl, 1997 is reported for the first time from India. An illustrated key is furnished for all the females of the Indian species of Iphitrachelus.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"38"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112789","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}

{"title":"Morphological study of Lappetascaris lutjani Rasheed, 1965 (Nematoda: Ascaridoidea) from a new host, Ilisha compressa Randall (Clupeiformes: Pristigasteridae), in the Persian Gulf off Iraq.","authors":"Xiao-Hong Gu, Hassan A Fazaa, Hussein A Saud, Atheer H Ali, Liang Li","doi":"10.1007/s11230-025-10229-9","DOIUrl":"10.1007/s11230-025-10229-9","url":null,"abstract":"<p><p>The genus Lappetascaris is a poorly known ascaridoid group. In the present study, the detailed morphology of the type species of Lappetascaris, L. lutjani, was further studied using light and scanning electron microscopy, based on the newly collected specimens from a new host Ilisha compressa Randall (Clupeiformes: Pristigasteridae) in the Persian Gulf off Iraq. Some previously unreported morphological features of taxonomic significance were observed, including the vulva with swollen lips, the egg with thick shell, the precloacal papillae being 10-14 pairs and the large mastoid phasmids in the female. A broad range of morphometric variability in the lengths of body, oesophagus, intestinal caecum and spicules was found among different individuals from different fish hosts and localities. Moreover, the validity of L. chandipurensis Gupta & Masoodi, 1990 and L. suraiyae Kalyankar, 1975 was discussed, which should be considered as synonyms of L. lutjani. Lappetascaris lutjani was reported from the Iraq waters for the first time.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 3","pages":"37"},"PeriodicalIF":1.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144082002","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}

{"title":"Taxonomy of the cestodes Avitellina sudanea and A. centripunctata (Cyclophyllidea, Thysanosomatidae) parasitic in sheep and goats in India based on morphological and molecular evidence.","authors":"Susheel Kumar, Harpreet Kaur","doi":"10.1007/s11230-025-10235-x","DOIUrl":"10.1007/s11230-025-10235-x","url":null,"abstract":"<p><p>This study presents morphological, molecular and phylogenetic analyses of two species of the genus Avitellina, A. sudanea and A. centripunctata parasitic in sheep and goats and sampled in the region of the City of Chandigarh, North India. Three molecular markers were used: mitochondrial cytochrome c oxidase subunit 1 (cox1), nuclear small subunit ribosomal RNA (SSU rDNA) and internal transcribed spacer 1-5.8S rRNA (ITS1-5.8S rDNA) genes. Morphological analysis revealed differences in key structures, including paruterine organ shape and testis arrangement. Molecular analysis revealed that A. sudanea showed no exact match but significant similarity with other species: A. lahorea and A. centripunctata, exhibiting 91.39% and 85.89-86.52% (SSU rDNA), 96.27 and 94.31% (cox1), 94.19 and 94.41% (ITS1-5.8S rDNA) sequence similarity, respectively. The Maximum Likelihood phylogenetic trees based on DNA sequences of SSU rRNA, cox1 and ITS1 placed these species in a separate clade, which was distinct from anoplocephalids (sensu stricto) and supported the thysanosomatids as a distinct taxon at the family level. The evolutionary divergence based on base substitution rates confirmed substantial interspecific genetic distinctions, with high divergence values of 0.12 (cox1), 0.25 (SSU rDNA) and 0.11 (ITS1-5.8S rDNA) between A. sudanea and A. centripunctata. This study provides the first molecular characterization of A. sudanea, confirming its genetic distinctiveness and taxonomic status as a valid species. Our findings highlight the necessity for more molecular studies on Avitellina tapeworms using robust genetic tools to ensure accurate taxonomic delineation within the genus.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 3","pages":"36"},"PeriodicalIF":1.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144006131","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}

{"title":"The Ixodes auritulus complex (Acari: Parasitiformes: Ixodidae) in the Southern Cone of America.","authors":"José M Venzal, Evelina L Tarragona, Fernando S Flores, María L Félix, Gabriel L Cicuttin, Patrick S Sebastian, Marcelo B Labruna, Alberto A Guglielmone, Santiago Nava","doi":"10.1007/s11230-025-10230-2","DOIUrl":"10.1007/s11230-025-10230-2","url":null,"abstract":"<p><p>Ixodes auritulus Neumann, 1904 (Acari: Parasitiformes: Ixodidae) represents a species complex principally associated to birds belonging to the orders Ciconiiformes, Charadriiformes, Columbiformes, Falconiformes, Galliformes, Passeriformes, Piciformes, Pelecaniformes, Procellariiformes, Strigiformes, and Tinamiformes in both immature and adult stages. This is a cosmopolitan tick species whose distribution encompass the Afrotropical, Australasian, Nearctic and Neotropical Zoogeographic Regions, and Pacific Oceans islands. Ixodes auritulus sensu stricto was described from southern Chile, and recently new species from this complex were described based only on morphological characters. In this study, specimens of ticks determined to belong to the I. auritulus complex obtained from the Southern Cone of America in different biogeographic regions of Argentina, southern Chile, Brazil and Uruguay were analyzed. Additionally, a female paratype of Ixodes rio Apanaskevich & Labruna, 2022 from the southern from Brazil was included in the study. Morphological characters were analyzed and phylogenetic analyses were performed by obtaining partial mitochondrial DNA sequences of the 16S rRNA and cox1 genes. The specimens from Punta Arenas, Magallanes Province, southern Chile (type locality) correspond morphologically to I. auritulus s.s. and those from central and northern Argentina (Pampa and Yungas Biogeographic Provinces), Uruguay and southern Brazil (Pampa Biogeographic Province) were morphologically compatible with I. rio. The phylogenetic analysis based on mitochondrial DNA sequences support the classification of I. auritulus s.s. from southern Chile and I. rio from Argentina, Brazil and Uruguay as two distinct species. Additional morphological and molecular analyses of ticks from ecological regions other than those included here are necessary to deepen the knowledge of the diversity of the I. auritulus complex in the Southern Cone of America.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 3","pages":"35"},"PeriodicalIF":1.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144009478","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}

{"title":"Morphology and molecular phylogeny of Rhadinorhynchus nudus (Harada, 1938) (Acanthocephala: Rhadinorhynchidae) from Euthynnus affinis (Scombridae) in the Persian Gulf off Iran.","authors":"Reza Ghanei-Motlagh, Jesús S Hernández-Orts, Mark D Fast, Mansour El-Matbouli, Mona Saleh","doi":"10.1007/s11230-025-10225-z","DOIUrl":"10.1007/s11230-025-10225-z","url":null,"abstract":"<p><p>Acanthocephalans collected from the stomach of the mackerel tuna (Euthynnus affinis Cantor) in the Persian Gulf off Iran were identified as Neorhadinorhynchus nudus Harada, 1938 based on morphological characters and molecular sequence data from mitochondrial (cytochrome c oxidase subunit I, COI) and nuclear ribosomal DNA (small and large subunit ribosomal DNA, 18S and 28S rDNA). Phylogenetic analyses of the order Echinorhynchida Southwell & Macfie, 1925 were performed based on the concatenated (18S+28S+COI) sequence data using maximum likelihood (ML) and Bayesian inference (BI) analyses. The results showed that N. nudus grouped together with species of Rhadinorhynchus Lühe, 1911, supporting the proposal that Neorhadinorhynchus Yamaguti, 1939 is a synonym of Rhadinorhynchus. Rhadinorhynchus mariserpentis Steinauer et al., 2019 was also treated as a junior synonym of Rhadinorhynchus nudus. Haplotype network analysis revealed no correlation between haplotype distribution and geographical origin of R. nudus.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 3","pages":"34"},"PeriodicalIF":1.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144032539","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}

{"title":"Characterization of new 'white grub' parasites (Posthodiplostomum spp.) (Trematoda: Diplostomidae) in Georgia, USA, with descriptions of two new species and remarks on P. nanum Dubois, 1937.","authors":"Tyler J Achatz, Zoe S Von Holten, Jonathon Pritchard, Matthew Keel","doi":"10.1007/s11230-025-10233-z","DOIUrl":"10.1007/s11230-025-10233-z","url":null,"abstract":"<p><p>Posthodiplostomum Dubois, 1936 is a diverse, widespread genus of diplostomoideans that parasitize as adults the intestines of piscivorous birds. Larvae of Posthodiplostomum spp. commonly cause the 'white grub' disease of fishes. During July 2024, we collected Posthodiplostomum spp. from green heron Butorides virescens and great egret Ardea alba in Georgia, USA, including two new species. We provide descriptions of both new species in the present study. Partial nuclear 28S rDNA and mitochondrial cox1 gene DNA sequences were generated for all collected species; newly obtained 28S sequences were used to study the phylogenetic interrelationships among Posthodiplostomum spp. The new species have a subspherical prosoma that is characteristic in only a few other species, notably Posthodiplostomum aztlanensis and Posthodiplostomum nanum which parasitize the same avian host species. Despite minimal morphological differences among Posthodiplostomum seminolense n. sp., Posthodiplostomum dawnsherryae n. sp., P. aztlanensis and P. nanum, these morphologically similar species differ by 0.5-5.9% in partial 28S sequences and 10.9-17.4% in partial cox1 sequences. The original description of P. nanum was based on immature specimens; we provide a new description of P. nanum based on previously sequenced specimens from a great egret in Mississippi, USA to allow better comparisons.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 3","pages":"33"},"PeriodicalIF":1.0,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144058356","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}

{"title":"Rediscovered historical lots uncover the identity of Nikolaj A. Livanow's Protoclepsis species and clarify the taxonomy of Palearctic waterfowl-associated leeches (Hirudinea: Glossiphoniidae).","authors":"Ivan N Bolotov, Tatyana A Eliseeva, Andrey V Bespyatykh, Elsa Y Kuznetsova, Alexander V Kondakov","doi":"10.1007/s11230-025-10221-3","DOIUrl":"10.1007/s11230-025-10221-3","url":null,"abstract":"<p><p>In 1902, Nikolaj Livanow described a new genus, Protoclepsis, together with three new nominal species: P. meyeri, P. garjaewi, and P. tessellatoides. The syntypes of the first species were collected in Kazan (European Russia), while those of the two latter species were obtained from Lake Baikal (Siberia). The genus Protoclepsis Livanow, 1902 was established for a group of waterfowl-associated leeches with four pairs of eyespots and represents a synonym of Theromyzon Philippi, 1867. In contrast, the taxonomic concept of Livanow's nominal species was a matter of over a century-long discussion. Here, we revise the taxonomic position of these taxa based upon morphological examination of the original type series that were rediscovered in the Edward Eversman Zoology Museum and Herbarium, Kazan (Volga Region) Federal University, Russia. The lectotype is designated for each of the three nominal species. We found that Protoclepsis garjaewi morphologically corresponds to Hyperboreomyzon polaris Bolotov et al., 2022, although the first taxon was incorrectly described by Livanow as having four pairs of eyespots. Hence, Hyperboreomyzon garjaewi (Livanow, 1902) comb. nov. is proposed. Protoclepsis meyeri represents a synonym of Theromyzon maculosum (Rathke, 1862), as suggested by Livanow himself, while Protoclepsis tessellatoides is a synonym of Theromyzon mollissimum (Grube, 1871). Protoclepsis mollissima Livanow, 1902 incertae sedis has strongly reduced papillation and pigmentation and is tentatively considered a deep-water ecological race of Theromyzon mollissimum. A key for reliable morphological identification of the waterfowl-associated glossiphoniid leeches of Northern Eurasia is also presented. Our findings highlight the low level of endemism of glossiphoniid leeches in Lake Baikal.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 3","pages":"32"},"PeriodicalIF":1.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144010239","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}

{"title":"Redescription of Eimeria ovata Duncan, 1968 (Apicomplexa: Eimeriidae) from the gray-collared Chipmunk Neotamias cinereicollis Allen (Rodentia: Sciuridae).","authors":"John A Hnida","doi":"10.1007/s11230-025-10231-1","DOIUrl":"10.1007/s11230-025-10231-1","url":null,"abstract":"<p><p>Eimeria ovata Duncan, 1968 is redescribed from 2 of 39 (5%) gray-collared chipmunks Neotamias cinereicollis Allen in Arizona, USA. Sporulated oöcysts of this species are ovoidal, 26.3 × 20.3 (23-28 × 16-22) µm, with a length/width ratio of 1.4 (1.2-1.6), a pitted, bi-layered wall, and 0-2 polar granules; oöcyst residuum and micropyle are absent. Sporocysts are ovoidal, 13.3 × 8.2 (12-15 × 7-9) µm, with a length/width ratio of 1.7 (1.6-1.0), a Stieda body, and sporocyst residuum; sporozoites contain a posterior refractile body. The measurements and structural features of these oöcysts are similar to those reported for E. ovata described from the eastern chipmunk Tamias striatus. This is a new geographic record for this coccidian and the first report to include photomicrographs of its sporulated oöcyst.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 3","pages":"31"},"PeriodicalIF":1.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144058357","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}

{"title":"Morphological and molecular description of a novel species of Eimeria (Apicomplexa) that infects extraintestinal tissues of kiwi (Aves: Apteryx spp.).","authors":"Emma Scheltema, Kerri Morgan, Preet Singh, Barbara Adlington, Laryssa Howe","doi":"10.1007/s11230-025-10227-x","DOIUrl":"10.1007/s11230-025-10227-x","url":null,"abstract":"<p><p>Coccidia (Apiconmplexa) are naturally occurring and occasionally detrimental parasites of kiwi (Apteryx spp.), a unique, flightless bird species dependent upon conservation efforts for survival. Using morphological and molecular data, a new coccidia species, Eimeria koka n. sp., isolated from two closely related but geographically isolated kiwi host species, Apteryx rowi Tennyson et al. (rowi) and Apteryx mantelli Bartlett (North Island brown kiwi), is described. Oocysts are oval (20.8 × 15.9 μm) with a mean L/W ratio of 1.3, and a distinctive rough, crenellated brown oocyst wall (mean 1.2 μm), an oocyst residuum, 1-2 polar granules, and no micropyle. Sporocysts are ellipsoidal (11.6 × 6.3 μm) with a Stieda body and sporocyst residuum. Phylogenetic analysis of the cytochrome C oxidase subunit 1 (CO1) placed E. koka n. sp. in a separate clade to other Eimeria species previously identified from kiwi (Coker et al., Syst Parasitol 100(3):269-281, 2023). Comparison of DNA from oocysts with infected tissues from a single juvenile North Island brown kiwi confirmed parasitism of the kidney and lung tissues. This is the first Eimeria species identified from extraintestinal tissues in kiwi. Further molecular studies are recommended to determine the tissue distribution of E. koka n. sp. and other Eimeria species in kiwi.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 3","pages":"30"},"PeriodicalIF":1.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11982086/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143812875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New nomenclatural acts in the family Lecithasteridae (Digenea: Hemiuroidea).","authors":"Konstantin S Vainutis, Anastasia N Voronova","doi":"10.1007/s11230-025-10228-w","DOIUrl":"10.1007/s11230-025-10228-w","url":null,"abstract":"<p><p>In a recent study of the subfamily Lecithasterinae, we proposed a new genus to accommodate a new species and several previously described species. It has been brought to our attention that the new genus Opistholecithum Vainutis & Voronova, 2025 is a junior homonym, with Opistholecithum Baer, 1970 having priority. We here erect a new genus Alloopistholecithum n. g. to distinguish it from the dicrocoeliid genus Opistholecithum Baer, 1970. Eleven new combinations were provided. Additionally, we clarified the geographic distribution for Alloopistholecithum sandugaense (Vainutis & Voronova, 2025) n. comb.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 2","pages":"29"},"PeriodicalIF":1.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782015","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}