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Magro L, Cutmore SC, Carrasson M, Cribb TH. Integrated characterisation of nine species of the Schistorchiinae (Trematoda: Apocreadiidae) from Indo-Pacific fishes: two new species, a new genus, and a resurrected but 'cryptic' genus. Syst Parasitol 2023:10.1007/s11230-023-10093-5. [PMID: 37160818 DOI: 10.1007/s11230-023-10093-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 04/12/2023] [Indexed: 05/11/2023]
Abstract
We report nine species of the Schistorchiinae Yamaguti, 1942 (Apocreadiidae Skrjabin, 1942) from Indo-Pacific marine fishes. Molecular data (ITS2 and 28S rDNA and cox1 mtDNA) are provided for all species and the genus-level classification of the subfamily is revised. For Schistorchis Lühe, 1906, we report the type-species Sch. carneus Lühe, 1906 and Sch. skrjabini Parukhin, 1963. For Sphinteristomum Oshmarin, Mamaev & Parukhin, 1961 we report the type-species, Sph. acollum Oshmarin, Mamaev & Parukhin, 1961. We report and re-recognise Lobatotrema Manter, 1963, for the type and only species, L. aniferum Manter, 1963, previously a synonym of Sph. acollum. Lobatotrema aniferum is phylogenetically distant from, but morphologically similar to, Sph. acollum and Lobatotrema is recognised as a 'cryptic genus'. We propose Blendiella n. gen. for B. trigintatestis n. sp. and B. tridecimtestis n. sp. These species are broadly consistent with the present morphological concept of Schistorchis but are phylogenetically distant from the type-species; a larger number of testes and some other subtle morphological characters in species of Blendiella serve to distinguish the two genera. We report three species of Paraschistorchis Blend, Karar & Dronen, 2017: P. stenosoma (Hanson, 1953) Blend, Karar & Dronen, 2017 (type-species), P. seychellesiensis (Toman, 1989) Blend, Karar & Dronen, 2017, and P. zancli (Hanson, 1953) Blend, Karar & Dronen, 2017. Lobatotrema aniferum, P. stenosoma, and Sch. carneus each have two distinct cox1 populations either over geographical range or in sympatry. Available evidence suggests that most of these species, but not all, are widespread in the tropical Indo-Pacific.
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Affiliation(s)
- Lori Magro
- School of Biological Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Scott C Cutmore
- Queensland Museum, Biodiversity and Geosciences Program, South Brisbane, QLD, 4101, Australia
| | - Maite Carrasson
- Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Barcelona, Spain
| | - Thomas H Cribb
- School of Biological Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia.
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Truong TN, Warren MB, Ksepka SP, Curran SS, Bullard SA. POSTHOVITELLINUM PSILOTERMINAE N. GEN., N. SP. (DIGENEA: LISSORCHIIDAE) INFECTING THE INTESTINE OF CYCLOCHEILOS ENOPLOS (CYPRINIFORMES: CYPRINIDAE) IN THE MEKONG RIVER, VIETNAM. J Parasitol 2021; 107:431-445. [PMID: 34077518 DOI: 10.1645/20-77] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Herein we describe a new species and propose a new genus, Posthovitellinum psiloterminae n. gen., n. sp. (Lissorchiidae: Asymphylodorinae), based on specimens that infect the intestine of Cyclocheilos enoplos (Bleeker, 1849) (Cypriniformes: Cyprinidae), a migratory riverine carp from the Mekong River (Dong Thap province, Vietnam). The new species is assigned to Lissorchiidae by having a combination of features: spinous tegument, subterminal oral sucker, pre-equatorial ventral sucker, median and pretesticular ovary, submarginal genital pore at level of the ventral sucker, follicular vitellarium distributing in 2 lateral fields, and lacking eyespot pigment in the adult. It cannot be assigned to any existing asymphylodorine genus because it has the combination of a well-developed cirrus-sac, an unarmed ejaculatory duct and metraterm, a follicular vitellarium distributing in 2 lateral fields located between the posterior margin of the ventral sucker and the mid-level of the testis, and a sinistral, submarginal genital pore. The new species has an elongate, claviform cirrus-sac, a single, large, elongate-oval testis at the posterior extremity of the body, operculate eggs, and an I-shaped excretory bladder with secondary branches at the level of the testis and extending anteriad to the level of the pharynx. Bayesian inference analysis of the partial large subunit ribosomal DNA gene (28S rDNA) recovered the new species sister to Asaccotrema vietnamienseSokolov and Gordeev, 2019; these species differed by 118 nucleotides (12%; 983 bp fragment). This is the first lissorchiid reported from the Mekong River; only the second from southern Vietnam; and the fourth reported from a cyprinid fish in Vietnam. The aforementioned phylogenetic analysis included previously unpublished sequences representing lissorchiids infecting the intestine of North American suckers (Cypriniformes: Catostomidae): Lissorchis cf. nelsoni from spotted sucker; Minytrema melanops (Rafinesque, 1820) and Lissorchis cf. gullaris (immature) from smallmouth buffalo, Ictiobus bubalus (Rafinesque, 1818). Asymphylodora atherinopsidisAnnereaux, 1947, herein is treated as a species incertae sedis. The 28S tree topology suggests that Lissorchiinae may comprise more than 1 lineage, but additional species are needed to confidently assert this.
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Affiliation(s)
- Triet N Truong
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama, 36849
| | - Micah B Warren
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama, 36849
| | - Steven P Ksepka
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama, 36849
| | - Stephen S Curran
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama, 36849
| | - Stephen A Bullard
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama, 36849
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Mcallister CT, Fayton TJ, Cloutman DG, Bursey CR, Robison HW, Trauth SE, Whipps CM. Parasites of the Golden Topminnow, Fundulus chrysotus (Cyprinodontiformes: Fundulidae), from Arkansas, U.S.A. COMP PARASITOL 2019. [DOI: 10.1654/1525-2647-87.1.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chris T. Mcallister
- Division of Science and Mathematics, Eastern Oklahoma State College, Idabel, Oklahoma 74745, U.S.A. (e-mail: )
| | - Thomas J. Fayton
- Department of Microbiology and Immunology, Cornell University, Ithaca, New York 14853, U.S.A. (e-mail: )
| | | | - Charles R. Bursey
- Department of Biology, Pennsylvania State University–Shenango Campus, Sharon, Pennsylvania 16146, U.S.A. (e-mail: )
| | - Henry W. Robison
- 9717 Wild Mountain Drive, Sherwood, Arkansas 71754, U.S.A. (e-mail: )
| | - Stanley E. Trauth
- Department of Biological Sciences, Arkansas State University (Emeritus), State University, Arkansas 72467, U.S.A. (e-mail: )
| | - Christopher M. Whipps
- Environmental and Forest Biology, SUNY College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, New York 13210, U.S.A. (e-mail:)
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McAllister CT, Bursey CR, Fayton TJ, Cloutman DG, Robison HW, Connior MB, Trauth SE. Helminth Parasites of the Blackstripe Topminnow,Fundulus notatus(Cyprinodontiformes: Fundulidae), from Arkansas and Oklahoma, U.S.A. COMP PARASITOL 2016. [DOI: 10.1654/4825i.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Choudhury A, Aguirre-Macedo ML, Curran SS, de Núñez MO, Overstreet RM, de León GPP, Santos CP. Trematode diversity in freshwater fishes of the Globe II: 'New World'. Syst Parasitol 2016; 93:271-82. [PMID: 26898590 DOI: 10.1007/s11230-016-9632-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 01/09/2016] [Indexed: 12/11/2022]
Abstract
We provide a summary overview of the diversity of trematode parasites in freshwater fishes of the 'New World', i.e. the Americas, with emphasis on adult forms. The trematode fauna of three regions, South America, Middle America, and USA and Canada (North America north of Mexico), are considered separately. In total, 462 trematode species have been reported as adults from the Americas. The proportion of host species examined for parasites varies widely across the Americas, from a high of 45% in the Mexican region of Middle America to less than 5% in South America. North and South America share no adult species, and one exclusively freshwater genus, Creptotrema Travassos, Artigas & Pereira, 1928 in the Allocreadiidae Looss, 1902 is the most widely distributed. Metacercariae of strigeiforms maturing in fish-eating birds (e.g. species of the Diplostomidae Poirier, 1886) are common and widely distributed. The review also highlights the paucity of known life-cycles. The foreseeable future of diversity studies belongs to integrative approaches and the application of molecular ecological methods. While opportunistic sampling will remain important in describing and cataloguing the trematode fauna, a better understanding of trematode diversity and biology will also depend on strategic sampling throughout the Americas.
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Affiliation(s)
- Anindo Choudhury
- Division of Natural Science, St. Norbert College, 100 Grant Street, De Pere, WI, 54115, USA.
| | - M Leopoldina Aguirre-Macedo
- CINVESTAV-IPN, Unidad Mérida, Km 6 Antigua Carretera a Progreso, Apartado Postal 73, Cordemex, 97310, Mérida, Yucatan, Mexico
| | - Stephen S Curran
- Department of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS, 39564, USA
| | - Margarita Ostrowski de Núñez
- Laboratorio de Helmintología, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1428 EGA, Buenos Aires, Argentina
| | - Robin M Overstreet
- Department of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS, 39564, USA
| | - Gerardo Pérez-Ponce de León
- Instituto de Biología, Universidad Nacional Autónoma de México, Ap. Postal 70-153, CP 04510, México, D.F., México
| | - Cláudia Portes Santos
- Laboratório de Avaliação e Promoção e Saúde Ambiental, Instituto Oswaldo Cruz, Av. Brasil 4365, Rio de Janeiro, 21040-900, Brazil
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