Description of two new species of allocreadiid trematodes (Digenea: Allocreadiidae) in middle American freshwater fishes using an integrative taxonomy approach

Hernández-Mena, David Iván; Pinacho-Pinacho, Carlos Daniel; García-Varela, Martìn; Mendoza-Garfías, Berenít; León, Gerardo Pérez‐Ponce de

doi:10.1007/s00436-018-6160-8

Cited by 19 publications

(20 citation statements)

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“…The new species agrees with the diagnosis of Auriculostoma by possessing a single pair of muscular lobes on either side of the oral sucker (Scholz et al ., 2004; Razo Mendivil et al ., 2014; Hernández-Mena et al ., 2019). Unfortunately, the specimen used for SEM was in poor shape and the structure of the oral lobes is not clearly seen.…”

Section: Resultsmentioning

confidence: 99%

Description of a new species ofAuriculostoma(Digenea: Allocreadiidae) fromCharacidium heirmostigmata(Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

et al. 2021

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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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Section: Resultsmentioning

confidence: 99%

Description of a new species ofAuriculostoma(Digenea: Allocreadiidae) fromCharacidium heirmostigmata(Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

et al. 2021

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“…Other studies have already demonstrated, through molecular analyses of the 28S rRNA gene, cases of paraphyletic genera within Allocreadiidae, which contrast with the morphological concept on which these genera were erected (see Atopkin & Shedko, 2014; Pérez-Ponce de León et al , 2016; Petkevičiūtė, 2018). Recent molecular phylogenetic analyses of the Allocreadiidae show that the ‘papillose allocreadiids’ ( sensu Hopkins, 1937) do not form a monophyletic assemblage; oral lobes apparently either arose or were secondarily lost several times during the evolutionary history of the group, depending on the plesiomorphic condition (see Hernández-Mena et al ., 2016, 2019; Pérez-Ponce de León et al ., 2016; Atopkin et al ., 2020). Clearly, more DNA sequences are needed to test the hypothesis of the paraphyly of Creptotrema, especially from congeners in South America where the largest species diversity of the genus is found, and where the type species was reported.…”

Section: Discussionmentioning

confidence: 99%

“…The newly generated sequences were aligned with available sequences of 33 species of allocreadiids and three callodistomids using ClustalW (Thompson et al ., 1997), implemented in the web site . Based on previously published phylogenetic trees of Allocreadiidae Looss, 1902 (Pérez-Ponce de León et al ., 2016; Hernández-Mena et al ., 2019), sequences of species of Prosthenhystera Travassos, 1922 (Callodistomidae Odhner, 1910) were used for rooting the trees. Phylogenetic analyses were run under maximum likelihood (ML) and Bayesian inference (BI), employing GTR + G + I as the most appropriate model of nucleotide evolution as estimated with jModelTest v2 (Darriba et al ., 2012).…”

Section: Methodsmentioning

confidence: 99%

“…In particular, the allocreadiids account for most of the diversity, comprising ten genera and 20 species (Ponce de León et al , 2015a; Choudhury et al , 2016; Pérez-Ponce de León & Hernández-Mena et al , 2019). In recent years, three genera and 11 species of these trematodes have been described and phylogenetic hypotheses generated based on molecular data (Curran et al , 2011; Razo-Mendivil et al ., 2014; Pérez-Ponce de León et al ., 2015a, 2016; Hernández-Mena et al ., 2016, 2019). These and ongoing studies on the diversity of these trematodes suggest a complex history of diversification resulting from the interplay of host biogeography, co-phylogeny and host shifting (Choudhury et al ., 2016, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Disentangling the evolutionary and biogeographical history of the freshwater fish trematode genus Creptotrema (Digenea: Allocreadiidae) using an integrative taxonomy approach: the case of Creptotrema agonostomi in Middle American mountain mullets

et al. 2020

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Species of the allocreadiid genus Creptotrema are parasites of freshwater fishes in the Americas. Species in the genus possess one pair of muscular oral lobes on the oral sucker. Currently, the genus contains eight species, six distributed in South America, one in Middle America and one in North America. Genetic data are only available for the North American species, Creptotrema funduli, a parasite of fundulids originally described from Oneida Lake, New York State. In this study, we obtained 28S ribosomal DNA sequences of trematodes morphologically similar to Creptotrema agonostomi from the mountain mullet, Dajaus monticola, across a wide geographical range in Middle America. Our molecular phylogenetic analyses showed that (1) the genus Creptotrema, as currently conceived, is not monophyletic; (2) the allocreadiids in mountain mullets should be re-allocated in the genus Pseudoparacreptotrema; and (3) the allocreadiid trematodes from D. monticola across Middle America represent four morphologically similar species, three of which can be distinguished genetically. These three new species are described herein using an integrative taxonomy approach. We contend that accurate estimates of species diversity and phylogenetic relationships among allocreadiids, and most likely other species of trematodes, necessarily require an integrative taxonomy approach that should consider at least DNA sequences and scanning electron microscopy.

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“…Traditional species descriptions based on the morphological traits of sexual adults are supplemented with data on other life cycle stages, hosts and molecular genetics (e.g. Galaktionov and Blasco-Costa, 2018; Hernández-Mena et al ., 2019). These sources of information also provide clues to the detection of cryptic species (e.g.…”

Section: Introductionmentioning

confidence: 99%

It is marine: distinguishing a new species ofCatatropis(Digenea: Notocotylidae) from its freshwater twin

Gonchar

Галактионов

2020

Parasitology

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The morphology of sexual adults is the cornerstone of digenean systematics. In addition, life cycle data have always been significant. The integration of these approaches, supplemented with molecular data, has allowed us to detect a new species that many researchers may have previously seen, but not recognized. Sexual adults from common eiders that we found in northern European seas were extremely similar to other notocotylids, but the discovery of their intermediate host, a marine snail, revealed the true nature of this material. Here we describe sexual adults, rediae and cercariae of Catatropis onobae sp. nov. We discuss how ‘Catatropis verrucosa’ should be regarded, justify designation of the new species C. onobae for our material and explain why it can be considered a cryptic species. The phylogenetic position of C. onobae within Notocotylidae, along with other evidence, highlights the challenges for the taxonomy of the family, for which two major genera appear to be polyphyletic and life cycle data likely undervalued.

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Description of two new species of allocreadiid trematodes (Digenea: Allocreadiidae) in middle American freshwater fishes using an integrative taxonomy approach

Cited by 19 publications

References 24 publications

Description of a new species ofAuriculostoma(Digenea: Allocreadiidae) fromCharacidium heirmostigmata(Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

Description of a new species ofAuriculostoma(Digenea: Allocreadiidae) fromCharacidium heirmostigmata(Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

Disentangling the evolutionary and biogeographical history of the freshwater fish trematode genus Creptotrema (Digenea: Allocreadiidae) using an integrative taxonomy approach: the case of Creptotrema agonostomi in Middle American mountain mullets

It is marine: distinguishing a new species ofCatatropis(Digenea: Notocotylidae) from its freshwater twin

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