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Curran SS, Gonzales RD, Bullard SA. MOLECULAR CHARACTERIZATION OF SPOROCYSTS AND CERCARIAE (DIGENEA: BUCEPHALIDAE) INFECTING THE EASTERN OYSTER CRASSOSTREA VIRGINICA FROM VIRGINIA. J Parasitol 2023; 109:259-263. [PMID: 37387470 DOI: 10.1645/22-100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023] Open
Abstract
The identity of a larval bucephalid infecting the eastern oyster, Crassostrea virginica (Gmelin, 1791), from a tidal river in Virginia is investigated using ribosomal deoxyribonucleic acid (rDNA). The internal transcribed spacer (ITS1, 5.8S, ITS2) region and a portion of the 28S rDNA were isolated from genomic DNA from sporocysts containing cercariae and compared with sequences from GenBank and from our previous collections of possibly related bucephalids. The studied larval bucephalid was 100% identical at the ITS1, 5.8S, and partial 28S rDNA sequences with Prosorhynchoides paralichthydis (Corkum, 1961) Curran and Overstreet, 2009; however, it differed from P. paralichthydis by 6 bases plus 3 deletions in the ITS2 region. This level of variation at the ITS2 region has been demonstrated among some Indo-Pacific species of Prosorhynchoides Dollfus, 1929, suggesting that the larval bucephalid represents an unidentified or innominate species of Prosorhynchoides that is closely related to P. paralichthydis.
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Affiliation(s)
- Stephen S Curran
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
| | | | - Stephen A Bullard
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
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Truong TN, Curran SS, Reyda FB, Horton M, Bullard SA. RESURRECTION OF PLESIOCREADIUM WINFIELD, 1929 (DIGENEA: MACRODEROIDIDAE) WITH PHYLOGENETIC ANALYSES AND SUPPLEMENTAL OBSERVATIONS OF ITS TYPE SPECIES FROM RIVERS IN ARKANSAS, MISSISSIPPI, NEW YORK, AND TENNESSEE. J Parasitol 2023; 109:114-128. [PMID: 37103005 DOI: 10.1645/22-105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023] Open
Abstract
We herein resurrect and emend PlesiocreadiumWinfield, 1929 (Digenea: Macroderoididae) and provide a supplemental description of its type species, Plesiocreadium typicumWinfield, 1929, based on adult specimens collected from the intestine of bowfins, Amia calva Linnaeus, 1766 (Amiiformes: Amiidae), captured in the L'Anguille River (Mississippi River Basin, Arkansas), Big Lake (Pascagoula River Basin, Mississippi), Chittenango Creek (Oneida Lake, New York), and Reelfoot Lake (Tennessee River Basin, Tennessee). Plesiocreadium spp. (Pl. typicum and Plesiocreadium flavum [Van Cleave and Mueller, 1932] n. comb.) differ from other macroderoidids by having a dorsoventrally flat forebody, ceca that extend posteriad beyond the testes and that do not form a cyclocoel, testes that are greater than one-half of maximum body width, a cirrus sac that is dorsal to the ventral sucker and arches dextrad or sinistrad, a uterine seminal receptacle, asymmetrical vitelline fields that remain separated anteriorly and posteriorly and that extend anteriad to the level of the ventral sucker, and an I-shaped excretory vesicle. Bayesian phylogenetic analyses (ITS2 and 28S) recovered monophyletic Plesiocreadium sensu stricto (as defined herein) sister to Macroderoides trilobatusTaylor, 1978 and that clade sister to the remaining macroderoidids, with sequences ascribed to species of Macroderoides Pearse, 1924 recovered as paraphyletic. We regard Macroderoides parvus (Hunter, 1932) Van Cleave and Mueller, 1934, M. trilobatus, and RauschiellaBabero, 1951 as incertae sedis. Arkansas, New York, and Tennessee comprise new locality records for Pl. typicum.
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Affiliation(s)
- Triet N Truong
- Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
| | - Stephen S Curran
- Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
| | - Florian B Reyda
- Biology Department and Biological Field Station, 120 Perna Science Building, State University of New York, College at Oneonta, Oneonta, New York 13820
| | - Matthew Horton
- Arkansas Game and Fish Commission, 2 Natural Resources Drive, Little Rock, Arkansas 72205
| | - Stephen A Bullard
- Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
- Department of Zoology, School for Environmental Sciences and Development, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa
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Knudson HP, Curran SS, Truong TN, Dutton HR, Bullard SA. ENCYCLOBREPHUS BREVIVITELLUS N. SP. (DIGENEA: PLAGIORCHIOIDEA, INCERTAE SEDIS) INFECTING THE MEKONG SNAIL-EATING TURTLE, MALAYEMYS SUBTRIJUGA, IN THE MEKONG RIVER, VIETNAM, WITH PHYLOGENETIC ANALYSES BASED ON RDNA. J Parasitol 2023; 109:87-95. [PMID: 36972370 DOI: 10.1645/22-98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
A new digenean species belonging in EncyclobrephusSinha, 1949 is described, and the generic diagnosis is amended to accommodate variation in several features of the new species. Worms were collected from the intestines of 2 specimens of the Mekong snail-eating turtle, Malayemys subtrijuga (Schlegel and Müller, 1845). Permanent whole-mounted worms were studied using light microscopy, and ribosomal DNA (rDNA) sequences were generated from 3 worms. We investigated the phylogenetic relationship of the new species among some digenea using separate Bayesian inference analyses, 1 based on the 28S rDNA gene and rooted using a species from the Monorchioidea Odhner, 1911, and a second based on the internal transcribed spacer 1 region rooted by a species in the Microphalloidea Ward, 1901. Prior to the analyses, Encyclobrephus was classified in the Encyclometridae Mehra, 1931. Previous studies using rDNA from the type species for the family, Encyclometra colubrimurorum (Rudolphi, 1819) Baylis and Cannon, 1924, have demonstrated that En. colubrimurorum is closely related to species of Polylekithum Arnold, 1934 in the Gorgoderoidea Looss, 1901. Nevertheless, phylograms from both analyses indicated that the new species of Encyclobrephus belongs in the Plagiorchioidea Lühe, 1901, related to species in the families Cephalogonimidae Looss, 1899, Plagiorchiidae Lühe, 1901, Reniferidae Pratt, 1902, and Telorchiidae Looss, 1899. The present results suggest that Encyclobrephus is not closely related to En. colubrimurorum. Familial classification of Encyclobrephus is contingent on molecular data availability for the type species but it should be removed from the Encyclometridae and classified as incertae sedis within the Plagiorchioidea. Encyclometridae belongs in the Gorgoderoidea, not the Plagiorchioidea.
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Affiliation(s)
- Haley P Knudson
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
| | - Stephen S Curran
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
| | - Triet N Truong
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
| | - Haley R Dutton
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
| | - Stephen A Bullard
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832
- Department of Zoology, School for Environmental Sciences and Development, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa
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Curran SS, Calhoun DM, Tkach VV, Warren MB, Bullard SA. A New Species of Prosorhynchoides Dollfus, 1929 (Digenea: Bucephalidae) Infecting Chain Pickerel, Esox niger Lesueur, 1818 (Perciformes: Esocidae), from the Pascagoula River, Mississippi, U.S.A., with Phylogenetic Analysis and Nucleotide-Based Elucidation of a Three-Host Life Cycle. COMP PARASITOL 2022. [DOI: 10.1654/copa-d-21-00014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Stephen S. Curran
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama 36849, U.S.A. (e-mails: , , )
| | - Dana M. Calhoun
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado 80309, U.S.A. (e-mail: )
| | - Vasyl V. Tkach
- Department of Biology, University of North Dakota, Grand Forks, North Dakota 58202, U.S.A. (e-mail: )
| | - Micah B. Warren
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama 36849, U.S.A. (e-mails: , , )
| | - Stephen A. Bullard
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama 36849, U.S.A. (e-mails: , , )
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Curran SS, Warren MB, Bullard SA. Description of a New Species of Bacciger (Digenea: Gymnophalloidea) Infecting the American Gizzard Shad, Dorosoma cepedianum (Lesueur, 1818), and Molecular Characterization of Cercaria rangiae Wardle, 1983, with Molecular Phylogeny of Related Digenea. COMP PARASITOL 2022. [DOI: 10.1654/copa-d-21-00011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Stephen S. Curran
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, Alabama, U.S.A. 36849
| | - Micah B. Warren
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, Alabama, U.S.A. 36849
| | - Stephen A. Bullard
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, Alabama, U.S.A. 36849
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Truong TN, Curran SS, Reyda FB, Rash JM, Bullard SA. Plagioporus wataugaensis n. sp. (Digenea: Opecoelidae) infecting intestine of northern hogsucker, Hypentelium nigricans, and white sucker, Catostomus commersonii, (Cypriniformes: Catostomidae) from the eastern USA, including an emended diagnosis, key to Nearctic congeners, and phylogenetic analysis. Parasitol Int 2022; 89:102580. [DOI: 10.1016/j.parint.2022.102580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/11/2022] [Accepted: 03/20/2022] [Indexed: 11/17/2022]
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Truong TN, Curran SS, Dutton HR, Bullard SA. Resurrection and emendation of Pseudoparamacroderoides Gupta & Agrawal, 1968 (Digenea: Macroderoididae), description of a new species from Vietnam, and comments on the systematics of macroderoidid genera. Syst Parasitol 2021; 98:697-711. [PMID: 34687425 DOI: 10.1007/s11230-021-10006-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 10/06/2021] [Indexed: 10/20/2022]
Abstract
We herein resurrect and emend Pseudoparamacroderoides Gupta & Agrawal, 1968 (Digenea: Macroderoididae) and describe a new species, Pseudoparamacroderoides dongthapensis n. sp., from adult specimens infecting the intestine of a riverine catfish, Mystus mysticetus Roberts, (Siluriformes: Bagridae) in the Mekong River, Vietnam. Pseudoparamacroderoides (Pseudoparamacroderoides seenghali Gupta & Agrawal, 1968 [type species]; Pseudoparamacroderoides vittati Kakaji, 1969 [= Ps. vittatusi]; Pseudoparamacroderoides raychaudhurii Agarwal & Kumar, 1983; and Pseudoparamacroderoides keni Agarwal & Agarwal, 1984) differs from other macroderoidid genera by having the combination of a subspherical oral sucker that lacks distinctly-enlarged circumoral spines; caeca that extend posteriad beyond the testes without forming a cyclocoel; testes that are approximately ≤1/3 maximum body width in diameter; a cirrus sac that is claviform, slightly dorsal to and predominantly lateral to the ventral sucker (cirrus sac partially dorsolateral to dextral or sinistral margin of ventral sucker); symmetrical vitelline fields that extend posteriad to the middle of the post-testicular space (not restricted to the inter-gonadal space) and that remain separate (not confluent) anteriorly and posteriorly; and an excretory vesicle that is I-shaped (with or without anterior swelling) and wholly post-ovarian, inter-testicular, or median to the posterior testis. Pseudoparamacroderoides dongthapensis n. sp. differs from its congeners by having an elongate hindbody (>2× forebody length) and an excretory vesicle that is approximately half as long as the body and that extends anteriad beyond the anterior testis. This is the first record of a species of Pseudoparamacroderoides from beyond the Indian sub-continent, from M. mysticetus, and from the Mekong River or from Vietnam. A diagnostic key to macroderoidid genera and a key to Pseudoparamacroderoides spp. are provided.
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Affiliation(s)
- Triet N Truong
- Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite & Disease Laboratory, School of Fisheries, Aquaculture, & Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, AL, 36832, USA.
| | - Stephen S Curran
- Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite & Disease Laboratory, School of Fisheries, Aquaculture, & Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, AL, 36832, USA
| | - Haley R Dutton
- Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite & Disease Laboratory, School of Fisheries, Aquaculture, & Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, AL, 36832, USA
| | - Stephen A Bullard
- Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite & Disease Laboratory, School of Fisheries, Aquaculture, & Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, AL, 36832, USA
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Curran SS, Ksepka SP, Martorelli SR, Overstreet RM, Warren MB, Bullard SA. OPECHONA CHLOROSCOMBRI AND OPECHONA CORKUMI N. SP. (DIGENEA: LEPOCREADIIDAE) FROM THE NORTHERN GULF OF MEXICO WITH PHYLOGENETIC ANALYSIS BASED ON 28S RDNA. J Parasitol 2021; 107:606-620. [PMID: 34329425 DOI: 10.1645/20-151] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
This study investigated the identity of 2 lepocreadiid digenean species belonging in the genus Opechona Looss, 1907 that infect littoral fishes of the northern Gulf of Mexico. Opechona chloroscombriNahhas and Cable, 1964, a species previously known only from the Caribbean Sea and the Atlantic Ocean off Brazil, is reported herein from the Atlantic bumper, Chloroscombrus chrysurus (L.), in the northern Gulf of Mexico. A second species infects the gulf butterfish, Peprilus burti Fowler, and the American harvestfish, Peprilus paru (L.), and it is described as a new species that occurs in coastal waters of the north-central and northeastern Gulf of Mexico. Metacercariae infecting the mesoglea of pelagic jellyfishes (Bougainvillia carolinensis [McCady], Chrysaora quinquecirrha [Desor], and Stomolophus meleagris Agassiz) and pelagic comb jellies (Mnemiopsis leidyi Agassiz and Beroe ovata Bruguière) were collected that resemble the new species but require further study to identify. Newly generated sequence fragments (28S rDNA) from both species of Opechona plus 2 other lepocreadiids collected during the study were aligned with publicly available sequences from 18 other lepocreadiids, 6 species of Aephnidiogenidae Yamaguti, 1934, and 2 species of Gorgocephalidae Manter, 1966. The alignment was subjected to Bayesian inference analysis rooted using a gorgocephalid. The resulting tree estimated the positions of both Opechona spp. as being unresolved within a group of taxa that included all available species of Opechona plus available species from the morphologically similar genera ProdistomumLinton, 1910, Preptetos Pritchard, 1960, and Clavogalea Bray, 1985. Although relatively similar in morphology, the 2 studied species of Opechona were surprisingly not closely related. Opechona cablei (Stunkard, 1980) Bray and Gibson, 1990 is herein considered to be a junior synonym of Opechona pyriformis (Linton, 1900) Bray and Gibson, 1990.
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Affiliation(s)
- Stephen S Curran
- 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
| | - Sergio R Martorelli
- Centro de Estudios Parasitológicos y de Vectores, (CONICET-UNLP), La Plata, 1900, Argentina
| | - Robin M Overstreet
- Division of Coastal Sciences, The University of Southern Mississippi, Ocean Springs, Mississippi 39564
| | - Micah B Warren
- 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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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Curran SS, Dutton HR, Warren MB, du Preez L, Bullard SA. Two new species of Cephalogonimidae Looss, 1899 (Digenea: Plagiorchioidea) from Africa (Mozambique and Guinea), including a new phylogenetic hypothesis for related plagiorchioids. Int J Parasitol Parasites Wildl 2021; 14:228-240. [PMID: 33898223 PMCID: PMC8056140 DOI: 10.1016/j.ijppaw.2021.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 11/26/2022]
Abstract
Two new species of Cephalogonimidae Looss, 1899 (from Emoleptalea Looss, 1900 and Masenia Chatterji, 1933) are described from African freshwater fishes. Emoleptalea mozambiquensis n. sp. infected the turquoise killifish, Nothobranchius furzeri Jubb, in Mozambique and differs from its nine congeners by the combination of differences in body shape and size, oral sucker shape, sucker width ratio, configuration of the digestive tract and gonads, vitelline follicle shape and vitellarium configuration. Emoleptalea dollfusi Srivastava, 1960 is a synonym of Emoleptalea loossi Srivastava, 1960, thus there are still nine accepted species. Masenia baroensis n. sp. infected the globe fish, Tetraodon lineatus L., in the Republic of Guinea and differs from its five African congeners and 15 Asian congeners by the combination of circumoral spine count, oral sucker shape, caecal extent, ovary shape, genital pore position, and configuration of the vitellarium. Masenia dayali (Gupta & Puri, 1984) Chandra & Saxena, 2016 and Masenia pushpanjalii are nomina dubia. We propose Masenia ritai (Agrawal, 1964) n. comb., with M. ritai Sircar & Sinha, 1970 its junior synonym. Heterorchis cf. crumenifer (identified tentatively due to egg size) is reported from the West African lungfish, Protopterus annectens (Owen), in Mozambique (new geographical record). Heterorchis protopteri Thomas, 1958 and Heterorchis ghanensis Thomas, 1968 are species inquirendae. Sequences (28S rDNA) from these parasites were included in a Bayesian phylogenetic analysis with 37 other ingroup taxa. Both new species formed a clade with Masenia nkomatiensis Dumbo, Dos Santos & Avenant-Oldewage, 2019 from Africa. These three species formed a sister relationship with the other available cephalogonimids: Cephalogonimus americanus Stafford, 1902 and Cephalogonimus retusus (Dujardin, 1845), both frog parasites from North America and Europe, respectively. Heterorchis cf. crumenifer represented a distinct lineage within the Plagiorchioidea but formed a polytomy with species from 10 plagiorchioid families.
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Affiliation(s)
- Stephen S. Curran
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Project, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Haley R. Dutton
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Project, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Micah B. Warren
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Project, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Louis du Preez
- Unit for Environmental Sciences and Management, North-West, University, Potchefstroom Campus, Private Bag X6001, Potchefstroom, 20520, South Africa
- South African Institute for Aquatic Biodiversity, Private Bag 1015, Makhanda, 6140, South Africa
| | - Stephen A. Bullard
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Project, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
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Pan Q, Feron R, Jouanno E, Darras H, Herpin A, Koop B, Rondeau E, Goetz FW, Larson WA, Bernatchez L, Tringali M, Curran SS, Saillant E, Denys GPJ, von Hippel FA, Chen S, López JA, Verreycken H, Ocalewicz K, Guyomard R, Eche C, Lluch J, Roques C, Hu H, Tabor R, DeHaan P, Nichols KM, Journot L, Parrinello H, Klopp C, Interesova EA, Trifonov V, Schartl M, Postlethwait J, Guiguen Y. The rise and fall of the ancient northern pike master sex-determining gene. eLife 2021; 10:e62858. [PMID: 33506762 PMCID: PMC7870143 DOI: 10.7554/elife.62858] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 01/27/2021] [Indexed: 12/15/2022] Open
Abstract
The understanding of the evolution of variable sex determination mechanisms across taxa requires comparative studies among closely related species. Following the fate of a known master sex-determining gene, we traced the evolution of sex determination in an entire teleost order (Esociformes). We discovered that the northern pike (Esox lucius) master sex-determining gene originated from a 65 to 90 million-year-old gene duplication event and that it remained sex linked on undifferentiated sex chromosomes for at least 56 million years in multiple species. We identified several independent species- or population-specific sex determination transitions, including a recent loss of a Y chromosome. These findings highlight the diversity of evolutionary fates of master sex-determining genes and the importance of population demographic history in sex determination studies. We hypothesize that occasional sex reversals and genetic bottlenecks provide a non-adaptive explanation for sex determination transitions.
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Affiliation(s)
- Qiaowei Pan
- INRAE, LPGPRennesFrance
- Department of Ecology and Evolution, University of LausanneLausanneSwitzerland
| | - Romain Feron
- INRAE, LPGPRennesFrance
- Department of Ecology and Evolution, University of LausanneLausanneSwitzerland
- Swiss Institute of BioinformaticsLausanneSwitzerland
| | | | - Hugo Darras
- Department of Ecology and Evolution, University of LausanneLausanneSwitzerland
| | | | - Ben Koop
- Department of Biology, Centre for Biomedical Research, University of VictoriaVictoriaCanada
| | - Eric Rondeau
- Department of Biology, Centre for Biomedical Research, University of VictoriaVictoriaCanada
| | - Frederick W Goetz
- Environmental and Fisheries Sciences Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAASeattleUnited States
| | - Wesley A Larson
- Fisheries Aquatic Science and Technology Laboratory at Alaska Pacific UniversityAnchorageUnited States
| | - Louis Bernatchez
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université LavalQuébecCanada
| | - Mike Tringali
- Fish and Wildlife Conservation Commission, Florida Marine Research InstituteSt. PetersburgUnited States
| | - Stephen S Curran
- School of Fisheries and Aquatic Sciences, Auburn UniversityAuburnUnited States
| | - Eric Saillant
- Gulf Coast Research Laboratory, School of Ocean Science and Technology, The University of Southern MississippiOcean SpringsUnited States
| | - Gael PJ Denys
- Laboratoire de Biologie des organismes et écosystèmes aquatiques (BOREA), MNHN, CNRS, IRD, SU, UCN, Laboratoire de Biologie des organismes et écosystèmes aquatiques (BOREA)ParisFrance
- Unité Mixte de Service Patrimoine Naturelle – Centre d’expertise et de données (UMS 2006 AFB, CNRS, MNHN), Muséum national d’Histoire naturelleParisFrance
| | - Frank A von Hippel
- Department of Biological Sciences, Northern Arizona UniversityFlagstaffUnited States
| | - Songlin Chen
- Yellow Sea Fisheries Research Institute, CAFS, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao)QingdaoChina
| | - J Andrés López
- College of Fisheries and Ocean Sciences FisheriesFairbanksUnited States
| | - Hugo Verreycken
- Research Institute for Nature and Forest (INBO)BrusselsBelgium
| | - Konrad Ocalewicz
- Department of Marine Biology and Ecology, Institute of Oceanography, University of GdanskGdanskPoland
| | | | - Camille Eche
- GeT‐PlaGe, INRAE, GenotoulCastanet-TolosanFrance
| | - Jerome Lluch
- GeT‐PlaGe, INRAE, GenotoulCastanet-TolosanFrance
| | | | - Hongxia Hu
- Beijing Fisheries Research Institute & Beijing Key Laboratory of Fishery BiotechnologyBeijingChina
| | - Roger Tabor
- U.S. Fish and Wildlife ServiceLaceyUnited States
| | | | - Krista M Nichols
- Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric AdministrationSeattleUnited States
| | - Laurent Journot
- Institut de Génomique Fonctionnelle, IGF, CNRS, INSERM, Univ. MontpellierMontpellierFrance
| | - Hugues Parrinello
- Institut de Génomique Fonctionnelle, IGF, CNRS, INSERM, Univ. MontpellierMontpellierFrance
| | | | | | - Vladimir Trifonov
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk State UniversityNovosibirskRussian Federation
| | - Manfred Schartl
- University of Wuerzburg, Developmental Biochemistry, Biocenter, 97074 Würzburg, Germany; and The Xiphophorus Genetic Stock Center, Texas State UniversitySan MarcosUnited States
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Achatz TJ, Curran SS, Patitucci KF, Fecchio A, Tkach VV. Phylogenetic Affinities of Uvulifer Spp. (Digenea: Diplostomidae) in the Americas with Description of Two New Species from Peruvian Amazon. J Parasitol 2020. [PMID: 31580785 DOI: 10.1645/19-61] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Uvulifer Yamaguti, 1934, is a genus of diplostomoidean digeneans that parasitizes kingfishers worldwide. Species have a Neascus-type metacercaria that encysts in or on fish intermediate hosts, often causing black spot disease. Only 3 prior studies published DNA sequence data for Uvulifer species with only 1 including a single named species (Uvulifer spinatus López-Jiménez, Pérez-Ponce de León, & García-Varela, 2018). Herein we describe 2 new species of Uvulifer from the green-and-rufous kingfisher, Chloroceryle inda (Linnaeus), collected in Peru ( Uvulifer batesi n. sp. and Uvulifer pequenae n. sp.). Both new species are readily differentiated from their New World congeners by a combination of morphological characters including distribution of vitelline follicles and prosoma:opisthosoma length ratios. In addition, we used newly generated nuclear 28S rRNA and mitochondrial COI gene sequence data to differentiate among species and examine phylogenetic affinities of Uvulifer. This includes the 2 new species and Uvulifer ambloplitis (Hughes, 1927), as well as Uvulifer elongatus Dubois, 1988 , Uvulifer prosocotyle (Lutz, 1928), and Uvulifer weberi Dubois, 1985 , none of which have been part of prior molecular phylogenetic studies. Our data on Uvulifer revealed 0.1-2.2% interspecific divergence in 28S sequences and 9.3-15.3% in COI sequences. Our 28S phylogeny revealed at least 6 well-supported clades within the genus. In contrast, the branch topology in the COI phylogenetic tree was overall less supported, indicating that although COI sequences are a great tool for species differentiation, they should be used with caution for phylogenetic inference at higher taxonomic levels. Our 28S phylogeny did not reveal any clear patterns of host association between Uvulifer and particular species of kingfishers; however, it identified 2 well-supported clades uniting Uvulifer species from distant geographical locations and more than 1 biogeographic realm, indicating at least 2 independent dispersal events in the evolutionary history of the New World Uvulifer. Our results clearly demonstrate that the diversity of Uvulifer in the New World has been underestimated.
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Affiliation(s)
- Tyler J Achatz
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
| | - Stephen S Curran
- Division of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - Kaylyn F Patitucci
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
| | - Alan Fecchio
- Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal de Mato Grosso, Cuiabá, MT 78060900, Brazil
| | - Vasyl V Tkach
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
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Muhammad M, Lotz JM, Blaylock RB, Curran SS. White spot syndrome virus in decapods from Mississippi Sound, USA, and susceptibility of Palaemonetes pugio and Uca panacea to a Chinese isolate. Dis Aquat Organ 2020; 138:121-131. [PMID: 32162610 DOI: 10.3354/dao03449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The presence and quantity of white spot syndrome virus (WSSV) was surveyed using TaqMan real-time PCR to assess the extent of the virus in Mississippi Sound, USA. A total of 3577 wild decapods comprising 11 species was collected between November 2012 and August 2015: WSSV was present in 10 of the 11 species. Prevalence ranged from 5.1% in Uca rapax to 38.8% in U. spinicarpa. Viral load ranged from 1.8 to 7.3 log10 copies of WSSV µg-1 total DNA. Two Gulf species, Palaemonetes pugio and U. panacea, were injected with a series of doses of a virulent WSSV isolate from China to determine relative susceptibility and virulence because continuing translocation of highly pathogenic isolates of WSSV poses risk to native species. Survival was 0-65% for P. pugio and 5-60% for U. panacea. Median survival time was lower for P. pugio than U. panacea at all doses. Mean (±SD) lethal load was 9.0 ± 8.9 log copies of WSSV µg-1 total DNA in P. pugio and 8.2 ± 8.3 in U. panacea. Mean viral load in survivors was higher in U. panacea than in P. pugio (5.8 ± 6.1 vs. 3.2 ± 3.0 log copies of WSSV µg-1 total DNA); mean viral load was lower in wild individuals of those species (2.9 ± 3.2 for P. pugio and 4.9 ± 5.0 for U. panacea). U. panacea is potentially more tolerant of WSSV than P. pugio and may serve as an important reservoir host in the community.
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Affiliation(s)
- Muhammad Muhammad
- Aquaculture Division, Fisheries and Marine Affairs Agency of North Aceh District Lhokseumawe, Aceh Province 24351, Indonesia
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Achatz TJ, Curran SS, Patitucci KF, Fecchio A, Tkach VV. Phylogenetic Affinities of Uvulifer Spp. (Digenea: Diplostomidae) in the Americas with Description of Two New Species from Peruvian Amazon. J Parasitol 2019; 105:704-717. [PMID: 31580785 PMCID: PMC7584121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023] Open
Abstract
Uvulifer Yamaguti, 1934, is a genus of diplostomoidean digeneans that parasitizes kingfishers worldwide. Species have a Neascus-type metacercaria that encysts in or on fish intermediate hosts, often causing black spot disease. Only 3 prior studies published DNA sequence data for Uvulifer species with only 1 including a single named species (Uvulifer spinatus López-Jiménez, Pérez-Ponce de León, & García-Varela, 2018). Herein we describe 2 new species of Uvulifer from the green-and-rufous kingfisher, Chloroceryle inda (Linnaeus), collected in Peru ( Uvulifer batesi n. sp. and Uvulifer pequenae n. sp.). Both new species are readily differentiated from their New World congeners by a combination of morphological characters including distribution of vitelline follicles and prosoma:opisthosoma length ratios. In addition, we used newly generated nuclear 28S rRNA and mitochondrial COI gene sequence data to differentiate among species and examine phylogenetic affinities of Uvulifer. This includes the 2 new species and Uvulifer ambloplitis (Hughes, 1927), as well as Uvulifer elongatus Dubois, 1988 , Uvulifer prosocotyle (Lutz, 1928), and Uvulifer weberi Dubois, 1985 , none of which have been part of prior molecular phylogenetic studies. Our data on Uvulifer revealed 0.1-2.2% interspecific divergence in 28S sequences and 9.3-15.3% in COI sequences. Our 28S phylogeny revealed at least 6 well-supported clades within the genus. In contrast, the branch topology in the COI phylogenetic tree was overall less supported, indicating that although COI sequences are a great tool for species differentiation, they should be used with caution for phylogenetic inference at higher taxonomic levels. Our 28S phylogeny did not reveal any clear patterns of host association between Uvulifer and particular species of kingfishers; however, it identified 2 well-supported clades uniting Uvulifer species from distant geographical locations and more than 1 biogeographic realm, indicating at least 2 independent dispersal events in the evolutionary history of the New World Uvulifer. Our results clearly demonstrate that the diversity of Uvulifer in the New World has been underestimated.
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Affiliation(s)
- Tyler J Achatz
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
| | - Stephen S Curran
- Division of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - Kaylyn F Patitucci
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
| | - Alan Fecchio
- Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal de Mato Grosso, Cuiabá, MT 78060900, Brazil
| | - Vasyl V Tkach
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
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Smith-Herron AJ, Curran SS, Reyda F, Kleiner K. Editors' Acknowledgments. COMP PARASITOL 2019. [DOI: 10.1654/1525-2647-86.2.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Blaylock RB, Curran SS, Lotz JM. White spot syndrome virus (WSSV) in cultured juvenile blue crabs Callinectes sapidus: oral versus injection exposure, and feeding frequency effects. Dis Aquat Organ 2019; 133:147-156. [PMID: 31019127 DOI: 10.3354/dao03334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The efficacy of oral versus injection exposure and the effect of feeding frequency on the transmission of white spot syndrome virus (WSSV) in cultured juvenile blue crabs Callinectes sapidus were investigated. Crabs in Group 1 (G-1, n = 48) were exposed once orally to 100 mg of WSSV-infected shrimp tissue mg-1 of body weight (BW). The oral inoculum contained 2.6 × 109 WSSV genome copies mg-1 tissue. Group 2 (G-2, n = 46) received the same dosage once weekly for 5 wk. Group 3 (G-3, n = 12) was injected with 0.01 ml (2.6 × 107 genome copies 0.01 ml-1) WSSV inoculum g-1 BW. Group 4 (G-4, n = 12) was injected with 0.01 ml WSSV-negative shrimp serum and saline mixture g-1 BW. Dead and moribund animals were frozen at -80°C. After 37 d, all remaining crabs were frozen. Genomic DNA from gill tissue was evaluated for the presence and quantity of WSSV using TaqMan real-time PCR. All G-3 animals died and tested positive. No G-4 animals died or tested positive. In the fed groups, WSSV prevalence was approximately 16%, but viral load was higher and survival was lower in G-2 compared to G-1. Injected animals carried a higher viral load than fed animals, and dead animals had higher viral loads than live animals. Blue crab juveniles are susceptible to WSSV, but oral exposure does not efficiently transmit WSSV in juvenile blue crabs. Some animals can die from WSSV if repeatedly exposed.
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Affiliation(s)
- Reginald B Blaylock
- The University of Southern Mississippi, Thad Cochran Marine Aquaculture Center, Gulf Coast Research Laboratory, Ocean Springs, MS 39564, USA
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Andres MJ, Pulis EE, Curran SS, Overstreet RM. On the systematics of some marine haploporids (Trematoda) with the description of a new species of Megasolena Linton, 1910. Parasitol Int 2018; 67:805-815. [DOI: 10.1016/j.parint.2018.08.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 08/03/2018] [Accepted: 08/12/2018] [Indexed: 01/05/2023]
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18
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Connors VA, Curran SS, Reyda FB, Cielocha JJ. Editors’ Acknowledgments. COMP PARASITOL 2018. [DOI: 10.1654/1525-2647-85.2.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Curran SS, Pulis EE, Andres MJ, Overstreet RM. Two New Species of Saccocoelioides (Digenea: Haploporidae) with Phylogenetic Analysis of the Family, Including Species of Saccocoelioides from North, Middle, and South America. J Parasitol 2018. [PMID: 29543571 DOI: 10.1645/17-189] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Two cryptic species of haploporid digeneans belonging in Saccocoelioides are described from Costa Rica: one from a poeciliid fish, Poecilia gillii, and the other from a characid fish, Astyanax aeneus. Traditional morphological features are examined and found to be largely inefficient for differentiating among the new species and 20 New World congeners. Comparison of ribosomal DNA sequences among the 2 new species, 2 North American, 4 Middle American, and 3 South American species of Saccocoelioides, including the type-species Saccocoelioides nanii from Argentina and Saccocoelioides sogandaresi from Texas, is effective in differentiating among these species. A Bayesian inference analysis is conducted using a concatenated alignment of the same 2 ribosomal gene regions from 35 species belonging in the Haploporoidea and rooted by the atractotrematid Isorchis anomalus. The analysis provides stronger support for a close relationship between species in Saccocoelioides and Intromugil; thus, Intromugil is transferred from the Waretrematinae to the Chalcinotrematinae. Additionally, interrelationships among 11 species of Saccocoelioides are resolved and reveal a distinct genetic rift suggesting the presence of 2 distinct lineages within the genus, 1 containing the type-species and the other containing a group of species that more closely resemble other genera in the subfamily. Taxonomy of Saccocoelioides is discussed, and observations made during the present study justify taking several taxonomic actions: new combinations are proposed for Saccocoelioides tilapiae n. comb., formerly in the now-defunct Culuwiya, and Saccocoelioides ruedasueltensis n. comb., formerly in Chalcinotrema; Saccocoelioides guaporense nomen novem is proposed for Lecithobotrioides elongatus; Saccocoelioides papernai is considered a junior subjective synonym of Saccocoelioides overstreeti; Saccocoelioides godoyi is considered a junior subjective synonym of Saccocoelioides szidati; Saccocoelioides magnorchis and Saccocoelioides saccodontis are considered species inquirendae; and Saccocoelioides adelae is considered a nomen nudum. Four new hosts are reported for Saccocoelioides cichlidorum: Amphilophus lyonsi, Amatitlania nigrofasciatus, Amatitlania septemfasciatus, and Hypsophrys nicaraguensis. Molecular data call into question some existing species identifications in Saccocoelioides and reveal that molecular tools combined with traditional taxonomy are required for accurately identifying species in the genus. Twenty-two species of Saccocoelioides are formally accepted, but it is noted that as new molecular data become available, some of these species may be transferred to other genera in the subfamily.
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Affiliation(s)
- Stephen S Curran
- 1 Division of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - Eric E Pulis
- 2 The Institute for Marine Mammal Studies, 10801 Dolphin Lane, Gulfport, Mississippi 39503
| | - Michael J Andres
- 1 Division of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - Robin M Overstreet
- 1 Division of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
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Bakenhaster MD, Bullard SA, Curran SS, Kritsky DC, Leone EH, Partridge LK, Ruiz CF, Scharer RM, Poulakis GR. Parasite component community of smalltooth sawfish off Florida: diversity, conservation concerns, and research applications. ENDANGER SPECIES RES 2018. [DOI: 10.3354/esr00863] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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21
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Connors VA, Curran SS, Reyda FB, Cielocha JJ. Editors’ Acknowledgments. COMP PARASITOL 2017. [DOI: 10.1654/1525-2647-84.2.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Claxton AT, Fuehring AD, Andres MJ, Moncrief TD, Curran SS. Parasites of the Vermilion Snapper,Rhomboplites aurorubens(Cuvier), from the Western Atlantic Ocean. COMP PARASITOL 2017. [DOI: 10.1654/1525-2647-84.1.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Andrew T. Claxton
- Department of Coastal Sciences, The University of Southern Mississippi, Gulf Coast Research Laboratory, 703 East Beach Drive, Ocean Springs, Mississippi, U.S.A. (e-mail: )
| | - Andrew D. Fuehring
- Department of Coastal Sciences, The University of Southern Mississippi, Gulf Coast Research Laboratory, 703 East Beach Drive, Ocean Springs, Mississippi, U.S.A. (e-mail: )
| | - Michael J. Andres
- Department of Coastal Sciences, The University of Southern Mississippi, Gulf Coast Research Laboratory, 703 East Beach Drive, Ocean Springs, Mississippi, U.S.A. (e-mail: )
| | - Trevor D. Moncrief
- Department of Coastal Sciences, The University of Southern Mississippi, Gulf Coast Research Laboratory, 703 East Beach Drive, Ocean Springs, Mississippi, U.S.A. (e-mail: )
| | - Stephen S. Curran
- Department of Coastal Sciences, The University of Southern Mississippi, Gulf Coast Research Laboratory, 703 East Beach Drive, Ocean Springs, Mississippi, U.S.A. (e-mail: )
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Connors VA, Curran SS, Buron ID, Reyda FB. Editors' Acknowledgments. COMP PARASITOL 2016. [DOI: 10.1654/copa-83-02-288-288.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [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] [What about the content of this article? (0)] [Affiliation(s)] [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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Fayton TJ, Curran SS, Andres MJ, Overstreet RM, McAllister CT. Two New Species ofHomalometron(Digenea: Apocreadiidae) from Nearctic Freshwater Fundulids, Elucidation of the Life Cycle ofH. cupuloris, and Molecular Phylogenetic Analysis of Some Congeners. J Parasitol 2016; 102:94-104. [DOI: 10.1645/15-862] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Curran SS, Phillips AJ, Overstreet RM, Benz GW, Henningsen AD. Austrobdella cairae n. sp., an Oioxenous Marine Leech (Clitellata: Piscicolidae) from the Banded Guitarfish, Zapteryx exasperata, in the Northeastern Pacific Ocean. J Parasitol 2016; 102:179-86. [PMID: 26800278 DOI: 10.1645/15-829] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A new marine leech is herein described from specimens infecting the external surfaces, including the mouth and cloaca, of the banded guitarfish, Zapteryx exasperate, captured in the Gulf of California and eastern Pacific Ocean off the coast of San Diego, California. The leech is assigned to Austrobdella by possessing continuous contractile coelomic channels that lie outside the somatic musculature along the lateral edges of the urosome (marginal lacunae), clitellar gland cells densely packed in the urosome, 5 pairs of testisacs, and 6-annulate mid-body somites. The new leech is distinguished from its 6 congeners on the basis of body size (maximum 10 mm long) and shape (sub-cylindrical trachelosome distinctly demarcated from wider urosome that is ventrally flattened, convex dorsally, and narrowing toward caudal sucker that is narrow, 20-25% of maximum body width), number of eyespots (2 pairs), shape and arrangement of the ovisacs (pyriform and limited to somites XII/XIII), and characteristics of the midgut (1 pair of mycetomes, 6 pairs of simple thin-walled crop ceca, ventral postceca wanting, and 2 pairs of dendritic diverticula emerging from anterior portion of thick-walled intestine). The new species occurs in the northeastern Pacific Ocean on a benthic elasmobranch. Examination of host specificity for each Austrobdella species using the quantitative Index of Phylogenetic Host Specificity revealed that the new species is 1 of 4 oioxenous specialists in the genus, and the remaining 3 congeners are relative generalists herein classified as euryxenous. This is the first time host specificity for members of the Piscicolidae has been quantitatively assessed. The analysis suggests that associations between marine leeches belonging in Austrobdella and their vertebrate hosts are driven by ecological influences rather than host taxonomic placement.
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Affiliation(s)
- Stephen S Curran
- Department of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - Anna J Phillips
- Department of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - Robin M Overstreet
- Department of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - George W Benz
- Department of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - Alan D Henningsen
- Department of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
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Nolan MJ, Curran SS, Miller TL, Cutmore SC, Cantacessi C, Cribb TH. Dollfustrema durum n. sp. and Heterobucephalopsis perardua n. sp. (Digenea: Bucephalidae) from the giant moray eel, Gymnothorax javanicus (Bleeker) (Anguilliformes: Muraenidae), and proposal of the Heterobucephalopsinae n. subfam. Parasitol Int 2015; 64:559-70. [PMID: 26193193 DOI: 10.1016/j.parint.2015.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 07/14/2015] [Accepted: 07/16/2015] [Indexed: 11/27/2022]
Abstract
Two new species of bucephalid trematode (Platyhelminthes: Digenea) are described from the giant moray eel, Gymnothorax javanicus (Anguilliformes: Muraenidae), from off Lizard Island, Australia. We used a combined morphological and molecular-based approach targeting the internal transcribed spacer 2 (ITS2) of the ribosomal DNA (rDNA) and the D1-D3 region of the large subunit (28S) of rDNA to circumscribe the species. Dollfustrema durum n. sp. is distinguished from seven congeners in having 5-6 rows of enlarged body spines circling the anterior portion of the rhynchus. From the remaining 10 species, D. durum n. sp. differs in body length, and in having a caecum that terminates posteriorly to the confluent arc formed by the vitelline follicles, gonads predominantly anterior to the pharynx, testes in tandem, an anterior testis positioned posteriorly to the vitelline follicles, and the pre-vitelline field 23-40% of the body length. Heterobucephalopsis perardua n. sp. differs from Heterobucephalopsis gymnothoracis, the type- and only other reported species, in being two to three times smaller. Heterobucephalopsis, currently considered a genus inquirendum, is confirmed as valid and is rediagnosed. Bayesian inference analysis of 28S rDNA sequences representing 28 species from nine genera and four subfamilies of bucephalid, indicates that i) subfamily classifications previously based on morphological characters are broadly robust, ii) the sequence representing H. perardua n. sp. is resolved as distinct, and basal, to sequences representing the Bucephalinae, the Prosorhynchinae, the Paurorhynchinae, and the Dolichoenterinae, iii) the Dolichoenterinae and the Prosorhynchinae are monophyletic sister clades, basal to the Bucephalinae and the Paurorhynchinae, iv) sequences representing Grammatorcynicola, Prosorhynchus, and Dollfustrema are also monophyletic, v) the Bucephalinae is paraphyletic relative to the Paurorhynchinae, and vi) the bucephaline genera Prosorhynchoides, Rhipidocotyle, and Bucephalus are each polyphyletic. The morphological and molecular differences observed among the four previously recognised subfamilies in this study lead us to propose Heterobucephalopsinae n. subfam. to accommodate the genus Heterobucephalopsis.
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Affiliation(s)
- Matthew J Nolan
- Department of Pathology and Pathogen Biology, Royal Veterinary College, University of London, North Mymms, Hatfield AL9 7TA, United Kingdom.
| | - Stephen S Curran
- Gulf Coast Research Laboratory, The University of Southern Mississippi, East Beach Drive, Ocean Springs, MS 39564, USA.
| | - Terrence L Miller
- Fish Health Laboratory, Department of Fisheries, 3 Baron-Hay Court, South Perth, Western Australia 6151, Australia.
| | - Scott C Cutmore
- School of Biological Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia.
| | - Cinzia Cantacessi
- Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, United Kingdom.
| | - Thomas H Cribb
- School of Biological Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia.
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Connors VA, de Buron I, Reyda FB, Curran SS. Editor's Acknowledgments. COMP PARASITOL 2015. [DOI: 10.1654/1525-2647-82.2.323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Andres MJ, Curran SS, Fayton TJ, Pulis EE, Overstreet RM. An additional genus and two additional species of Forticulcitinae (Digenea: Haploporidae). Folia Parasitol (Praha) 2015; 62. [DOI: 10.14411/fp.2015.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 02/01/2015] [Indexed: 11/19/2022]
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Tkach VV, Curran SS. Prosthenystera oonastica n. sp. (Digenea: Callodistomidae) from ictalurid catfishes in southeastern United States and molecular evidence differentiating species in the genus across Americas. Syst Parasitol 2015; 90:39-51. [DOI: 10.1007/s11230-014-9531-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 10/19/2014] [Indexed: 10/24/2022]
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Curran SS, Pulis EE. Confirmation ofPseudolepidapedon balistisin the Acanthocolpidae (Digenea) Based on Phylogenetic Analysis of Ribosomal DNA. J Parasitol 2014; 100:856-9. [DOI: 10.1645/14-514.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Greiman SE, Tkach VV, Pulis E, Fayton TJ, Curran SS. Large scale screening of digeneans for Neorickettsia endosymbionts using real-time PCR reveals new Neorickettsia genotypes, host associations and geographic records. PLoS One 2014; 9:e98453. [PMID: 24911315 PMCID: PMC4049572 DOI: 10.1371/journal.pone.0098453] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 05/02/2014] [Indexed: 11/20/2022] Open
Abstract
Digeneans are endoparasitic flatworms with complex life cycles including one or two intermediate hosts (first of which is always a mollusk) and a vertebrate definitive host. Digeneans may harbor intracellular endosymbiotic bacteria belonging to the genus Neorickettsia (order Rickettsiales, family Anaplasmataceae). Some Neorickettsia are able to invade cells of the digenean's vertebrate host and are known to cause diseases of wildlife and humans. In this study we report the results of screening 771 digenean samples for Neorickettsia collected from various vertebrates in terrestrial, freshwater, brackish, and marine habitats in the United States, China and Australia. Neorickettsia were detected using a newly designed real-time PCR protocol targeting a 152 bp fragment of the heat shock protein coding gene, GroEL, and verified with nested PCR and sequencing of a 1371 bp long region of 16S rRNA. Eight isolates of Neorickettsia have been obtained. Sequence comparison and phylogenetic analysis demonstrated that 7 of these isolates, provisionally named Neorickettsia sp. 1-7 (obtained from allocreadiid Crepidostomum affine, haploporids Saccocoelioides beauforti and Saccocoelioides lizae, faustulid Bacciger sprenti, deropegid Deropegus aspina, a lecithodendriid, and a pleurogenid) represent new genotypes and one (obtained from Metagonimoides oregonensis) was identical to a published sequence of Neorickettsia known as SF agent. All digenean species reported in this study represent new host records. Three of the 6 digenean families (Haploporidae, Pleurogenidae, and Faustulidae) are also reported for the first time as hosts of Neorickettsia. We have detected Neorickettsia in digeneans from China and Australia for the first time based on PCR and sequencing evidence. Our findings suggest that further surveys from broader geographic regions and wider selection of digenean taxa are likely to reveal new Neorickettsia lineages as well as new digenean host associations.
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Affiliation(s)
- Stephen E. Greiman
- Department of Biology, University of North Dakota, Grand Forks, North Dakota, United States of America
| | - Vasyl V. Tkach
- Department of Biology, University of North Dakota, Grand Forks, North Dakota, United States of America
| | - Eric Pulis
- Department of Coastal Sciences, The University of Southern Mississippi, Ocean Springs, Mississippi, United States of America
| | - Thomas J. Fayton
- Department of Coastal Sciences, The University of Southern Mississippi, Ocean Springs, Mississippi, United States of America
| | - Stephen S. Curran
- Department of Coastal Sciences, The University of Southern Mississippi, Ocean Springs, Mississippi, United States of America
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Tkach VV, Curran SS, Bell JA, Overstreet RM. A New Species ofCrepidostomum(Digenea: Allocreadiidae) fromHiodon tergisusin Mississippi and Molecular Comparison with Three Congeners. J Parasitol 2013; 99:1114-21. [DOI: 10.1645/13-279.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Pulis EE, Curran SS, Andres MJ, Overstreet RM. Change in rank of Megaperidae (Trematoda) to Megaperinae within the Apocreadiidae and description of Haintestinum amplum n. g., n. sp. Parasitol Int 2013; 63:269-74. [PMID: 24275210 DOI: 10.1016/j.parint.2013.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 10/25/2013] [Accepted: 11/14/2013] [Indexed: 10/26/2022]
Abstract
Haintestinum amplum n. g., n. sp. is described from the scrawled cowfish, Acanthostracion quadricornis, collected in the Eastern Gulf of Mexico off Florida, USA. The new species is relatively large and shares characters of the Apocreadiidae and Megaperidae but conforms to the diagnosis of neither. It belongs in a new genus possessing a pharynx with lobed anterior margin and intestine terminating in paired ani, like in megaperids, and, when compared with apocreadiids, it shares important anatomical features, including an I-shaped excretory vesicle, canicular seminal vesicle, eye-spot remnants, and pretesticular uterus and lacks a cirrus and cirrus sac. The H-shaped intestine and large funnel-shaped oral sucker without a U-shaped sphincter encircling half the anterior aperture are the most notable diagnostic characters of the new monotypic genus. Additionally, the phylogenetic position of the Megaperidae is investigated for the first time, using analysis of partial 28S rDNA gene sequences from H. amplum, two species in the Megapera, Thysanopharynx elongatus, and previously published 28S sequences of species from members of the Apocreadiata, Haploporoidae, Lepocreadiata, and Opisthorchiata. The resulting analysis demonstrated a close relationship among the new genus and the three species of megaperids, and the megaperids were most closely allied with Schistorchis zancli of the apocreadiids. Moreover, we now consider Megaperidae as the subfamily Megaperinae within the Apocreadiidae.
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Affiliation(s)
- Eric E Pulis
- Department of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, USA.
| | - Stephen S Curran
- Department of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, USA
| | - Michael J Andres
- Department of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, USA
| | - Robin M Overstreet
- Department of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, USA
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Calhoun DM, Curran SS, Pulis EE, Provaznik JM, Franks JS. Hirudinella ventricosa (Pallas, 1774) Baird, 1853 represents a species complex based on ribosomal DNA. Syst Parasitol 2013; 86:197-208. [DOI: 10.1007/s11230-013-9439-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 08/14/2013] [Indexed: 11/28/2022]
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Curran SS, Tkach VV, Overstreet RM. Molecular Evidence for Two Cryptic Species ofHomalometron(Digenea: Apocreadiidae) in Freshwater Fishes of the Southeastern United States. COMP PARASITOL 2013. [DOI: 10.1654/4626.1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cutmore SC, Miller TL, Curran SS, Bennett MB, Cribb TH. Phylogenetic relationships of the Gorgoderidae (Platyhelminthes: Trematoda), including the proposal of a new subfamily (Degeneriinae n. subfam.). Parasitol Res 2013; 112:3063-74. [PMID: 23760874 DOI: 10.1007/s00436-013-3481-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 05/23/2013] [Indexed: 11/28/2022]
Abstract
Phylogenetic analyses of a range of gorgoderid trematodes based on ITS2 and partial 28S rDNA data lead us to propose the Degeneriinae n. subfam. for the genus Degeneria in recognition of its phylogenetic isolation and distinctive morphology and biology. The current concepts of the subfamilies Anaporrhutinae and Gorgoderinae were supported. Within the Gorgoderinae, the large genus Phyllodistomum is shown to be paraphyletic relative to Pseudophyllodistomum and Xystretrum. Notably, the clade of marine Phyllodistomum does not form a clade with the other marine genus, Xystretrum. Distinct clades within the Gorgoderinae correspond variously to identity of first intermediate host, form of cercaria and their marine or freshwater habitat. We are not yet in a position to propose separate genera for these clades.
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Affiliation(s)
- Scott C Cutmore
- School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia.
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Orélis-Ribeiro R, Ruiz CF, Curran SS, Bullard SA. Blood flukes (Digenea: Aporocotylidae) of epipelagic lamniforms: redescription of Hyperandrotrema cetorhini from basking shark (Cetorhinus maximus) and description of a new congener from shortfin mako shark (Isurus oxyrinchus) off Alabama. J Parasitol 2013; 99:835-46. [PMID: 23597211 DOI: 10.1645/12-125.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
We emend the original generic diagnosis for Hyperandrotrema Maillard and Ktari, 1978 , and redescribe its type species Hyperandrotrema cetorhini Maillard and Ktari, 1978 (Digenea: Aporocotylidae Odhner, 1912), based on the holotype and 2 paratypes collected from the heart of basking shark (Cetorhinus maximus). We also describe Hyperandrotrema walterboegeri Orélis-Ribeiro and Bullard n. sp. based on light and scanning electron microscopy of 6 adult specimens collected from the heart of a shortfin mako shark (Isurus oxyrinchus Rafinesque, 1810) captured from Viosca Knoll (29°11.70'N, 88°33.32'W; 123 km southwest of Dauphin Island, Alabama), northern Gulf of Mexico. Hyperandrotrema spp. infect lamniforms and differ from all other nominal aporocotylids at least by having a ventrolateral field of robust C-shaped spines (rather than transverse rows of minute, shaft-like spines), an inverse U-shaped intestine with extremely elongate ceca terminating near the level of the excretory bladder, and a common genital pore that comprises the dorsal opening of a common genital atrium. Adults of the new species exceeded 12 mm in total length, making them the largest of the nominal fish blood flukes. The new species further differs from H. cetorhini by the combination of having an adult body that is 7-8 times longer than wide, large midbody tegumental spines measuring 25-38 μm long × 10-12 μm wide, a long vas deferens 4-5% of the body length, a testis 9-11 times longer than wide, and a large ootype 105-150 μm long × 85-105 μm wide. This is the first report of Hyperandrotrema from the Gulf of Mexico and the second aporocotylid species reported from an epipelagic elasmobranch. Our results demonstrate that ecologically related (epipelagic, marine) and phylogenetically related (Lamniformes) definitive hosts are infected by morphologically similar (congeneric) fish blood flukes.
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Affiliation(s)
- Raphael Orélis-Ribeiro
- Aquatic Parasitology Laboratory, Department of Fisheries and Allied Aquacultures, College of Agriculture, Auburn University, 203 Swingle Hall, Auburn, Alabama 36849
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Pulis EE, Fayton TJ, Curran SS, Overstreet RM. A new species of Intromugil (Digenea: Haploporidae) and redescription of Intromugil mugilicolus. J Parasitol 2013; 99:501-8. [PMID: 23327447 DOI: 10.1645/12-106.1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Intromugil alachuaensis n. sp. is described based on specimens collected from the flathead grey mullet ( Mugil cephalus ) from the Santa Fe River in Florida. The new species is the fourth recognized species in the genus and the second from North America, with the other 2 being confined to South America. Intromugil mugilicolus from Louisiana and Mississippi is redescribed based on the holotype and newly collected material that was not flattened prior to fixation. Two generic features not previously reported are apparent in the new material from I. mugilicolus and I. alachuaensis n. sp.: an armed oral sucker and a series of sacs containing glandular material arranged in symmetrical rows in the hermaphroditic duct. Intromugil alachuaensis differs from I. mugilicolus by having an oral sucker longer than wide, body spines smaller and lanceolate rather than longer and hastate, and smaller vitelline follicles. Intromugil alachuaensis n. sp. differs from Intromugil simonei by having a large elongated pharynx rather than a smaller subspherical one, a proportionately larger and longer oral sucker, and a longer prepharynx (greater than 1 pharyngeal length). Intromugil alachuaensis n. sp. differs from Intromugil annakohnae by having a longer than wide pharynx, a relatively large oral sucker, less extensive vitellarium, and smaller body spines. Comparison of more than 2,400 base-pair-long sequences of nuclear rDNA (partial 18S, complete ITS1, complete 5.8S, complete ITS2, and partial 28S) from I. mugilicolus and I. alachuaensis n. sp. reveals 110 pairwise differences, including gaps, thus supporting our proposal of a new species. These represent the first published sequences from species in this genus.
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Affiliation(s)
- Eric E Pulis
- Department of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564, USA
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Curran SS, Tkach VV, Overstreet RM. A new species of Homalometron (Digenea: Apocreadiidae) from fishes in the northern Gulf of Mexico. J Parasitol 2012; 99:93-101. [PMID: 22924927 DOI: 10.1645/ge-3169.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Homalometron palmeri n. sp. is described and reported from the following fishes in the northern Gulf of Mexico: Micropogonias undulatus, Sciaenops ocellatus, Bairdiella chrysoura, Pogonias cromis, Fundulus grandis, Fundulus similis, and Eucinostomus argenteus. This species historically has been misidentified as Homalometron pallidum by some, and treated as Homalometron sp. by others. The new species differs from H. manteri by having a smaller body size, relatively longer postcecal space ranging from 7 to 15% of body length compared with 6-8%, body spines from 12 to 17 μm long compared with 15-20 μm, and an oral-to-ventral sucker width ratio of 1:1.2-1.3 compared with 1:1.3-1.5. Ribosomal DNA sequences from H. palmeri n. sp., H. pallidum, Homalometron manteri, and Homalometron pseudopallidum are compared and the new species is found to be most similar to H. manteri, a sympatric species. Comparison between 2 mitochondrial genes from H. palmeri n. sp. and H. manteri provided further evidence for their status as distinct species. Pairwise comparison of 503 aligned bases from ND1 gene revealed 33 variable sites (6.5%) between the 2 species. Pairwise comparison of 1,152 aligned bases from COI gene revealed 73 variable sites (6.3%) between the 2 species. Interspecific variability in mitochondrial sequences between the 2 species was 3-16 times greater than intraspecific variability in either species.
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Affiliation(s)
- Stephen S Curran
- Department of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564, USA.
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Curran SS, Pulis EE, Hugg DO, Brown JP, Manuel LC, Overstreet RM. Phylogenetic Position of Creptotrema funduli in the Allocreadiidae Based on Partial 28S rDNA Sequences. J Parasitol 2012; 98:873-5. [DOI: 10.1645/ge-3066.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Curran SS, Tkach VV, Overstreet RM. Phylogenetic Affinities of Auriculostoma (Digenea: Allocreadiidae), with Descriptions of Two New Species From Peru. J Parasitol 2011; 97:661-70. [DOI: 10.1645/ge-2641.1] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bullard SA, Barse AM, Curran SS, Morris JA. First record of a digenean from invasive lionfish, Pterois cf. volitans, (Scorpaeniformes: Scorpaenidae) in the northwestern Atlantic Ocean. J Parasitol 2011; 97:833-7. [PMID: 21506808 DOI: 10.1645/ge-2746.1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Adults of Lecithochirium floridense (Digenea: Hemiuridae) parasitized the stomach in each of 22 necropsied lionfish, Pterois cf. volitans (Scorpaeniformes: Scorpaenidae) (prevalence = 100%, mean intensity = 11), captured in the northwestern Atlantic Ocean off Beaufort, North Carolina (34°14.83'N, 76°35.25'W). This is the first report of a digenean from the invasive lionfish and that of L. floridense from a species of Pterois. The leech specimen previously identified as Myzobdella lugubris from P. volitans in the northwestern Atlantic Ocean is re-identified as Trachelobdella lubrica based on a study of the original voucher specimen.
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Affiliation(s)
- S A Bullard
- Aquatic Parasitology Laboratory, Department of Fisheries and Allied Aquacultures, Auburn University, 203 Swingle Hall, Auburn, Alabama 36849, USA.
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Parker JH, Curran SS, Overstreet RM, Tkach VV. Examination of Homalometron elongatum Manter, 1947 and Description of a New Congener from Eucinostomus currani Zahuranec, 1980 in the Pacific Ocean off Costa Rica. COMP PARASITOL 2010. [DOI: 10.1654/4451.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Curran SS, Blend CK, Overstreet RM. Nagmia rodmani n. sp., Nagmia cisloi n. sp., and Probolitrema richiardii (López, 1888) (Gorgoderidae: Anaporrhutinae) from Elasmobranchs in the Gulf of California, Mexico. COMP PARASITOL 2009. [DOI: 10.1654/4356.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Curran SS, Overstreet RM. Rhipidocotyle tridecapapillata n. sp. and Prosorhynchoides potamoensis n. sp. (Digenea: Bucephalidae) from Inland Fishes in Mississippi, U.S.A. COMP PARASITOL 2009. [DOI: 10.1654/4371.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Curran SS, Overstreet RM. Caecincola longiscens n. sp. (Digenea: Cryptogonimidae) from the White Crappie, Pomoxis annularis, in Mississippi, U.S.A. COMP PARASITOL 2009. [DOI: 10.1654/4360.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Curran SS, Overstreet RM, Tkach VV. Phylogenetic affinities of Plagiocirrus Van Cleave and Mueller, 1932 with the description of a new species from the Pascagoula River, Mississippi. J Parasitol 2008; 93:1452-8. [PMID: 18314693 DOI: 10.1645/ge-1207.1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Plagiocirrus loboides n. sp. (Digenea: Opecoelidae) is described from Fundulus nottii, F. dispar blairae, F. chrysotus, and Notemigonus crysoleucas from the Pascagoula River in Mississippi. Plagiocirrus loboides differs from P. primus Van Cleave and Mueller, 1932, by having a longer postcecal space (14-25% of body length vs. about 7%); a more anterior vitellarium (extending at least to the middle of the ventral sucker vs. to its posterior margin); and larger eggs (51-71 microm long by 23-34 microm wide vs. 40-55 microm long by 30-35 microm wide). Plagiocirrus loboides differs from P. testeus Fritts, 1959, by having a long postcecal space (vs. < 5% of body length); irregular, oblique, contiguous testes (vs. strongly lobed, well separated, tandem testes); and a more extensive vitellarium. Plagiocirrus loboides differs from both congeners by having an ovary comprised of 3 or 4 distinct lobes rather than having an entire ovary. Plagiocirrus wuyienensis Wang, 1981, from Hemimyzon zebroidus in Fujian Province, China, is herein considered a species inquirenda because it has a Y-shaped excretory bladder. Molecular phylogenetic analysis of 28S rDNA gene fragments from P. loboides and 17 digenean species demonstrates that Plagiocirrus belongs in Opecoelidae.
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Affiliation(s)
- Stephen S Curran
- Department of Coastal Sciences, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564, USA.
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Abstract
Diplostomoid digenean metacercariae have caused widescale mortalities of channel catfish, Ictalurus punctatus (Rafinesque), at aquaculture farms in Louisiana, Mississippi and Arkansas, USA. Originally, based on a tentative diagnosis, the industry considered the primary harmful agent to be an introduced species from Europe, Bolbophorus confusus (Krause, 1914), frequently reported from the American white pelican, Pelecanus erythrorhynchos Gmelin. Our group has now shown, using ITS 1-2 plus three more-conservative gene fragments, that two sympatric species of Bolbophorus exist in the American white pelican. One, B. damnificus Overstreet et Curran, 2002, infects the musculature of catfish, and the other, probably not B. confusus, does not infect catfish. However, at least four other pathogenic diplostomoids and a clinostomoid infect the catfish, and they use at least four different snail hosts, including the planorbids Planorbella trivolvis (Say) and Gyraulus parvus (Say), the physid Physella gyrina (Say) and a lymnaeid. Two metacercariae, B. damnificus and Bursacetabulus pelecanus Dronen, Tehrany et Wardle, 1999, infect the catfish and mature in the pelican; two others, Austrodiplostomum compactum (Lutz, 1928) and Hysteromorpha cf. triloba (Rudolphi, 1819), mature in cormorants; one, Diplostomum sp., matures in seagulls and at least one, Clinostomum marginatum (Rudolphi, 1819), matures in herons, egrets and other wading birds. Consequently, management of catfish ponds relative to digenean infections requires considerable biological information on the fish, bird, and snail hosts as well as the parasites.
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Affiliation(s)
- Robin M Overstreet
- Department of Coastal Sciences, The University of Southern Mississippi, P.O. Box 7000, Ocean Springs, Mississippi 9566-7000, USA.
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Overstreet RM, Curran SS, Pote LM, King DT, Blend CK, Grater WD. Bolbophorus damnificus n. sp. (Digenea: Bolbophoridae) from the channel catfish Ictalurus punctatus and American white pelican Pelecanus erythrorhynchos in the USA based on life-cycle and molecular data. Syst Parasitol 2002; 52:81-96. [PMID: 12075128 DOI: 10.1023/a:1015696622961] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The common pathogenic prodiplostomulum metacercaria in the flesh, mostly near the skin, of pond-produced channel catfish Ictalurus punctatus has been demonstrated to be Bolbophorus damnificus Overstreet & Curran n. sp. The catfish acquires the infection from the snail Planorbella trivolvis, the only known first intermediate host, and the species is perpetuated through the American white pelican Pelecanus erythrorhynchos, as confirmed by experimental infections with nestling and dewormed adult pelican specimens in conjunction with molecular data. It differs from the cryptic species Bolbophorus sp., also found concurrently in the American white pelican, by having eggs 123-129 microm rather than 100-112 microm long and consistent low values for nucleotide percentage sequence similarity comparing COI, ITS 1/2, 18S rRNA and 28S rRNA fragments. Bolbophorus sp. is comparable but most likely distinct from B. confusus (Kraus, 1914), which occurs in Europe and has eggs 90-102 microm long. Its intermediate hosts were not demonstrated. The adults of neither of the confirmed North American species of Bolbophorus were encountered in any bird other than a pelican, although several shore birds feed on infected catfish, and B. damnificus can survive but not mature when protected in the mouse abdominal cavity. B. ictaluri (Haderlie, 1953) Overstreet & Curran n. comb., a species different from B. damnificus, is considered a species inquirenda.
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Affiliation(s)
- Robin M Overstreet
- Department of Coastal Sciences, The University of Southern Mississippi, PO Box 7000, Ocean Springs 39566, USA
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