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Narciso RB, Vieira DHMD, Dias KGA, Abdallah VD, da Silva RJ. Redescription of Wallinia brasiliensis (Digenea: Allocreadiidae) from Astyanax lacustris (Osteichthyes: Characidae) in Brazil. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01024-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Franceschini L, Aguiar A, Zago AC, de Oliveira Fadel Yamada P, Bertholdi Ebert M, da Silva RJ. Three new species of Creptotrema (Trematoda, Allocreadiidae) with an amended diagnosis of the genus and reassignment of Auriculostoma (Allocreadiidae), based on morphological and molecular evidence. ACTA ACUST UNITED AC 2021; 28:69. [PMID: 34643505 PMCID: PMC8513519 DOI: 10.1051/parasite/2021065] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 09/19/2021] [Indexed: 11/16/2022]
Abstract
Diversity of Creptotrema was investigated using morphological and molecular tools, including data for Creptotrema creptotrema (type-species). Three new species, parasites of Brazilian fishes, are described: Creptotrema conconae n. sp. (type-host, Imparfinis mirini Haseman), Creptotrema schubarti n. sp. (type-host, Characidium schubarti Travassos) and Creptotrema megacetabularis n. sp. (type-host, Auchenipterus osteomystax (Miranda Ribeiro)). The diagnosis of the genus was amended to include new features. The new species differ from each other mainly in terms of body shape, relative sucker size, and testes position. DNA sequences were obtained from Creptotrema spp. from Brazil, including 28S, ITS and COI. Genetic divergences among the new species and C. creptotrema varied from 2.1 to 5.2% (21–49 bp) for 28S, and 6.6 to 16.4% (21–45 bp) for COI. Phylogenetic analysis (28S) placed the newly generated DNA sequences of Creptotrema in a clade (Creptotrema clade sensu stricto) composed of C. creptotrema, the new species described herein, and all species previously described as Auriculostoma, revealing that Auriculostoma is best interpreted as a synonym of Creptotrema based on the principle of priority of zoological nomenclature. Creptotrema funduli, the single sequence of the genus previously available, was not grouped within the Creptotrema clade sensu stricto, suggesting the need for reevaluation of the taxonomic status of this species. Our results showed that Creptotrema represents a monophyletic genus of trematodes widely distributed across the Americas, which currently comprises 19 valid species of parasites of teleosts and anurans.
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Affiliation(s)
- Lidiane Franceschini
- São Paulo State University (Unesp), Institute of Biosciences, Section of Parasitology, Rua Professor Doutor Antônio Celso Wagner Zanin, n° 250, Botucatu, São Paulo CEP 18618-689, Brazil
| | - Aline Aguiar
- São Paulo State University (Unesp), Institute of Biosciences, Department of Biodiversity, Avenida 24A, 1515, Bela Vista, Rio Claro, São Paulo CEP 13506-900, Brazil
| | - Aline Cristina Zago
- São Paulo State University (Unesp), Institute of Biosciences, Section of Parasitology, Rua Professor Doutor Antônio Celso Wagner Zanin, n° 250, Botucatu, São Paulo CEP 18618-689, Brazil
| | - Priscilla de Oliveira Fadel Yamada
- São Paulo State University (Unesp), Institute of Biosciences, Section of Parasitology, Rua Professor Doutor Antônio Celso Wagner Zanin, n° 250, Botucatu, São Paulo CEP 18618-689, Brazil
| | - Mariana Bertholdi Ebert
- São Paulo State University (Unesp), Institute of Biosciences, Section of Parasitology, Rua Professor Doutor Antônio Celso Wagner Zanin, n° 250, Botucatu, São Paulo CEP 18618-689, Brazil
| | - Reinaldo José da Silva
- São Paulo State University (Unesp), Institute of Biosciences, Section of Parasitology, Rua Professor Doutor Antônio Celso Wagner Zanin, n° 250, Botucatu, São Paulo CEP 18618-689, Brazil
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Molecular and morphological evidence of a new species of Crassicutis Manter 1936 (Digenea), a parasite of cichlids in South America. Parasitol Res 2021; 120:2429-2443. [PMID: 33893551 DOI: 10.1007/s00436-021-07161-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 04/11/2021] [Indexed: 10/21/2022]
Abstract
A new species of Crassicutis Manter, 1936 (Digenea: Megaperidae) is described from the intestine of Satanoperca jurupari (Cichlidae) in the Amazon River basin, Brazil. The genus Crassicutis currently contains eight species. Crassicutis manteri n. sp. is morphologically very similar to Crassicutis cichlasomae Manter, 1936, a parasite of cichlids reported from Mexico, the Antilles, and Central and South America. Molecular data revealed that C. cichlasomae represents a species complex in Middle American cichlids. The new species can be readily distinguished from C. cichlasomae sensu lato, and the other congeners, by a combination of morphological traits such as a narrow, elongate mouth opening (versus spherical in other species), the tandem position of testes (symmetrical or oblique in most congeners), narrow body widening towards its posterior end (versus widely oval, leaf-like in other species), and short intestinal caeca ending close to the posterior end of the posterior testis (versus reaching more posteriorly in other species). Six novel sequences of 28S rDNA, ITS1, and cox1 were generated for two isolates of the new species. Sequences of the 28S rRNA gene were used to corroborate that Crassicutis is sister taxa of Homalometron Stafford, 1904. Mitochondrial DNA corroborated the distinction of the new species with previously sequenced congeners in Middle American cichlids; the interspecific divergence between the new species and the genetic lineages of C. cichlasomae was very high, varying between 23.7 and 27.2%. Biogeographical implications of our findings are briefly discussed including questionable validity of records of C. cichlasomae from South America.
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Description of a new species of Auriculostoma (Digenea: Allocreadiidae) from Characidium heirmostigmata (Characiformes: Crenuchidae) from Argentina, using morphological and molecular data. J Helminthol 2021; 95:e19. [PMID: 33818327 DOI: 10.1017/s0022149x21000109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
During a parasitological survey of fishes at Iguazu National Park, Argentina, specimens belonging to the allocreadiid genus Auriculostoma were collected from the intestine of Characidium heirmostigmata. The erection of the new species is based on a unique combination of morphological traits as well as on phylogenetic analysis. Auriculostoma guacurarii n. sp. resembles four congeneric species - Auriculostoma diagonale, Auriculostoma platense, Auriculostoma tica and Auriculostoma totonacapanensis - in having smooth and oblique testes, but can be distinguished by a combination of several morphological features, hosts association and geographic distribution. Morphologically, the new species can be distinguished from both A. diagonale and A. platense by the egg size (bigger in the first and smaller in the last); from A. tica by a shorter body length, the genital pore position and the extension of the caeca; and from A. totonacapanensis by the size of the oral and ventral sucker and the post-testicular space. Additionally, one specimen of Auriculostoma cf. stenopteri from the characid Charax stenopterus (Characiformes) from La Plata River, Argentina, was sampled and the partial 28S rRNA gene was sequenced. The phylogenetic analysis revealed that A. guacurarii n. sp. clustered with A. tica and these two as sister taxa to A. cf. stenopteri. The new species described herein is the tenth species in the genus and the first one parasitizing a member of the family Crenuchidae.
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da Silva BAF, Dias KGA, da Silva RJ, Yamada FH. A new species of Wallinia Pearse, 1920 (Digenea: Allocreadiidae), in Astyanax bimaculatus (Linnaeus, 1758) (Characidae) in Northeast Brazil, based on morphology and DNA sequences. Parasitol Res 2020; 120:37-44. [PMID: 33241440 DOI: 10.1007/s00436-020-06948-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 10/27/2020] [Indexed: 11/25/2022]
Abstract
Wallinia caririensis n. sp. is described from the intestine of Astyanax bimaculatus (Linnaeus, 1758) (Characidae) collected in the Batateiras River in the municipality of Crato, Ceará state, Brazil. The description was based on integrative taxonomy approach using DNA sequences from the D1-D3 domains of the 28S rDNA gene. The new species was confirmed through the phylogenetic analysis of the 28S rDNA gene, which showed that Wallinia caririensis n. sp. is a sister taxon of Wallinia brasiliensis (Dias, Müller, Almeida, Silva, Azevedo, Pérez-Ponce de León, and Abdallah, 2018, and Wallinia anindoi Hernández-Mena, Pinacho-Pinacho, García-Varela, Mendonza-Garfias, and Pérez-Ponce de León, 2019), a species which parasitizes Astyanax fasciatus (Cuvier, 1819), A. lacustris (Lucena and Soares, 2016) in Brazil, and A. aeneus (Günther, 1860) in Mexico, with genetic divergences of 2% and 3%, respectively. The new species can be distinguished morphologically from its congeners by possessing large body size (length and width) and tapered extremity in the posterior end of the body, eyespots are present at the pharynx level, and vitelline follicles reach up to the half distance between the posterior testis and the extremity of the body, by having larger testes distributed in coincident zones (i.e., contiguous) and non-operculated eggs (a conspicuous characteristic in W. brasiliensis). To date, species of this genus have already been described in freshwater fishes from Mexico, Costa Rica, Venezuela, and Southeastern Brazil. The species described in this study consists of the second species parasitizing characids in Brazil, and the first record in Northeastern Brazil. This finding fills a gap and expands the biogeographic distribution of the genus Wallinia in South America.
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Affiliation(s)
- Bruno Anderson Fernandes da Silva
- Laboratório de Ecologia Parasitária (LABEP), Departamento de Biologia, Universidade Regional do Cariri (URCA) - Campus Pimenta, Pimenta, Crato, Ceará, 63105-000, Brazil.
| | - Karina Gabriele Alves Dias
- Laboratório de Parasitologia de Animais Silvestres (LAPAS), Setor de Parasitologia, Instituto de Biociências de Botucatu, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Campus Botucatu, Botucatu, São Paulo, Brazil
| | - Reinaldo José da Silva
- Laboratório de Parasitologia de Animais Silvestres (LAPAS), Setor de Parasitologia, Instituto de Biociências de Botucatu, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Campus Botucatu, Botucatu, São Paulo, Brazil
| | - Fábio Hideki Yamada
- Laboratório de Ecologia Parasitária (LABEP), Departamento de Biologia, Universidade Regional do Cariri (URCA) - Campus Pimenta, Pimenta, Crato, Ceará, 63105-000, Brazil
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A new species of Creptotrematina (Trematoda: Allocreadiidae) from characid fishes of Brazil: morphological and molecular data. J Helminthol 2020; 94:e163. [PMID: 32539878 DOI: 10.1017/s0022149x20000474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A new species of Creptotrematina Yamaguti, 1954 was collected from characid fishes, Astyanax fasciatus (Cuvier, 1819) and Astyanax lacustris Lucerna & Soares, 2016 from the Batalha River in the State of Sao Paulo, Brazil. The new species most closely resembles Creptotrematina aguirrepequenoi, but differs by the elongated shape of vitelline follicles, the extension of these follicles in the posterior end of body and the fact that they are not confluent. The morphological differences were confirmed through molecular data. Three specimens were sequenced, and molecular analyses were based on the internal transcribed spacers 2 and D1-D3 domains of the 28S ribosomal RNA gene. The obtained topologies showed the new species as a sister taxon of C. aguirrepequenoi, a species originally described from Astyanax mexicanus in Mexico, and later found in Astyanax aeneus in Costa Rica. Isolates of the new species are reciprocally monophyletic, and genetic distance values are similar to those observed in other species pairs within Allocreadiidae. These findings corroborate that the genus Creptotrematina is mostly a parasite of characids, and widely extended across the Americas, with representative species occurring between Argentina and northern Mexico.
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Gnocchi KG, Boldrini-França J, Gomes LC, Chippari-Gomes AR. De novo assembly and annotation of the transcriptome of Astyanax lacustris liver unveil candidate genes to monitor response to environmental stress. Mar Genomics 2020; 54:100784. [PMID: 33222893 DOI: 10.1016/j.margen.2020.100784] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 11/16/2022]
Abstract
Astyanax lacustris is a freshwater characid fish species that inhabits small streams, lakes and rivers in South America. These fish are abundant in the wild and highly adaptable in captive, being considered a good model for ecotoxicological studies. Nevertheless, there are only shortcoming gene sequence information available in public databases, which hinder their use in more comprehensive investigations that employ sensitivity molecular biology techniques to assess gene expression profile for biomarker identification. In this study, we report the first de novo transcriptome of A. lacustris liver with the aim of improving gene sequence data available for this fish species. Illumina sequencing generated 79,102,610 raw reads, which were filtered in 62,041,259 high-quality transcripts. De novo assembly resulted in 93,888 unigenes and 120,674 isoforms of an average length of 909.12 and 1046.50 bp, respectively. 60,495 isoforms (50.13%) were functionally annotated against seven databases, retrieving homology queries for about 46% of all isoforms. Therefore, in this study we provide information of relevant genes associated to environmental stress and contamination of A. lacustris, enabling future ecotoxicological researches and other molecular studies using this fish species as model.
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Affiliation(s)
- Karla Giavarini Gnocchi
- Universidade Vila Velha - UVV, Laboratório de Ictiologia Aplicada, Avenida Comissário José Dantas de Melo n° 21, Boa Vista, 29102-770 Vila Velha, ES, Brazil
| | - Johara Boldrini-França
- Universidade Vila Velha - UVV, Laboratório de Ictiologia Aplicada, Avenida Comissário José Dantas de Melo n° 21, Boa Vista, 29102-770 Vila Velha, ES, Brazil.
| | - Levy Carvalho Gomes
- Universidade Vila Velha - UVV, Laboratório de Ictiologia Aplicada, Avenida Comissário José Dantas de Melo n° 21, Boa Vista, 29102-770 Vila Velha, ES, Brazil
| | - Adriana Regina Chippari-Gomes
- Universidade Vila Velha - UVV, Laboratório de Ictiologia Aplicada, Avenida Comissário José Dantas de Melo n° 21, Boa Vista, 29102-770 Vila Velha, ES, Brazil.
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A New Genus of Ergasilidae (Copepoda: Cyclopoida) from the Gills of Astyanax fasciatus (Cuvier, 1819) (Actinopterygii: Characidae). Acta Parasitol 2019; 64:850-865. [PMID: 31432390 DOI: 10.2478/s11686-019-00108-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 08/06/2019] [Indexed: 11/21/2022]
Abstract
PURPOSE To describe a new genus and a new species of an ectoparasitic ergasilid (Copepoda, Ergasilidae) parasite of the red-tailed lambari, Astyanax fasciatus, from Jurumirim Reservoir (Upper Paranapanema River), São Paulo State, Brazil. METHODS The host fish were collected using multi-panel gill nets. The gill of each fish was washed and examined in a stereo microscope for copepods. The copepods found were stored in 70% ethanol, cleared in lactic acid, and mounted in Hoyer's medium. Some specimens were dissected in glycerol medium and then each dissected part was mounted on individual slides. RESULTS A new genus and a new species of Ergasilidae were described herein. Duoergasilus basilongus n. gen., n. sp. differs from all other ergasilids in having the second and third pair of biramous swimming legs (P2 and P3) each with a 2-segmented endopod, and by its unique maxillary basis, resembling a whip. CONCLUSIONS The new copepod is the first 'four-legged' ergasilid with all swimming legs having a 2-segmented endopod. Duoergasilus basilongus n. sp. represents the first record of a parasitic copepod on A. fasciatus in Jurumirim Reservoir, as well as its represents the first description to species level of an ergasilid infecting an Astyanax species in Brazil. A key to the 28 accepted genera of Ergasilidae is provided.
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Hernández-Mena DI, Pinacho-Pinacho CD, García-Varela M, Mendoza-Garfias B, Pérez-Ponce de León G. Description of two new species of allocreadiid trematodes (Digenea: Allocreadiidae) in middle American freshwater fishes using an integrative taxonomy approach. Parasitol Res 2018; 118:421-432. [DOI: 10.1007/s00436-018-6160-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 11/22/2018] [Indexed: 11/30/2022]
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