DNA sequence data analysis supports the taxonomic status of Eucinostomus dowii within the genus (Perciformes: Gerreidae)

Martínez-Guevara, A.; Rodríguez, F. Millán; Cruz‐Agüero, José De La

doi:10.1134/s0032945214100105

Cited by 5 publications

(6 citation statements)

References 23 publications

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“…In our study, the divergence was supported by not only mtDNA sequences but also nDNA information, particularly by the RAG1 partial gene, which has been used in taxonomic and phylogenetic studies of the family Gerreidae (Chen et al, ; Martínez‐Guevara et al, , ; Vergara‐Solana, García‐Rodriguez, et al, ). Although specimens of G. simillimus and G. cinereus have genetic differences, their divergence was relatively low in relation to other species in the same family.…”

Section: Discussionsupporting

confidence: 59%

“…Although specimens of G. simillimus and G. cinereus have genetic differences, their divergence was relatively low in relation to other species in the same family. For example, Martínez‐Guevara et al () estimated genetic distances between E. dowii (Gill 1863) and Eucinostomus argenteus Baird and Girard, 1855, for CO1, 12SrRNA, 16SrRNA and RAG1 of 10.7%, 7.6%, 6.2% and 0.7%, respectively. Chakraborty, Venugopal, Hidaka, and Iwatsuki (), using the 16SrRNA gene, reported a divergence of 4.1%–4.7% between two colour morphs of Gerres erythrourus , but considering the divergence between Gerres phaiya and any two colour morphs (6.4%–6.6% for the yellow type and 4.9%–5.3% for the white type), they suggested that these two colour morphs of G. erythrourus represent two distinct species.…”

Section: Discussionmentioning

confidence: 99%

“…In recent years, several studies of the family Gerreidae have used the urohyal bone, sagittae otoliths (hereinafter, otoliths), morphometric body characters and molecular markers to resolve the taxonomic problems of some species and genera of mojarras in the Neotropics (e.g., Chollet‐Villalpando, De La Cruz‐Agüero, & García‐Rodríguez, ; De La Cruz‐Agüero et al, ; De La Cruz‐Agüero et al, ; Martínez‐Guevara et al, ; Martínez‐Guevara, García‐Rodríguez, & De La Cruz‐Agüero, ; Vergara‐Solana, García‐Rodríguez, & De La Cruz‐Agüero, ; Vergara‐Solana, García‐Rodriguez, et al, ).This multisource approach intends to incorporate all the available information when defining the limits between species.…”

Section: Introductionmentioning

confidence: 99%

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Supporting the existence of two isolated evolutionary lineages ofGerres(Perciformes: Gerreidae) in America

et al. 2019

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For many years in America, many authors have considered that the Gerres genus contained a single species, the yellowfin mojarra Gerres cinereus (Walbaum, 1792); however, others have recognized two species in this genus in the Neotropics. In this study, specimens of G. cinereus (sensu lato) caught throughout its geographic range on both coasts of America were compared for the first time to analyse divergence among the sampled populations. A genetic analysis based on DNA sequences from three mitochondrial genes and one nuclear gene revealed a clear separation of two clades, one in the Pacific and one in the Atlantic. Geometric morphometric differences, based on body shape, sagittae otoliths and urohyal bone features, were significant between the two groups, including separation by an accurate classification a posteriori by a canonical variate analysis (CVA) > 82% in all data sets (overall mean >91%). Integration of the results of these approaches indicates that there is sufficient evidence to support species status for Gerres simillimus Regan, 1907, and it should be considered a valid species in the neotropical Pacific.

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Section: Discussionsupporting

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Supporting the existence of two isolated evolutionary lineages ofGerres(Perciformes: Gerreidae) in America

et al. 2019

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“…However, given that Eugerres mexicanus and Eugerres castroaguirrei shows null genetic distance for COI, 12SrRNA, 16SrRNA, and RAG1, we cannot support the existence of both species. In contrast, E. brasilianus and E. plumieri recorded high divergence values corresponding to previous results for the family Gerreidae (Chakraborty et al 2006, Chen et al 2007, Asgharian et al 2010, Martínez-Guevara et al 2014, Vergara-Solana et al 2014. In this context, other authors have recommended the synonymization of taxa with high morphological similarity, based on identical gene sequences and low COI genetic variation (Carr et al 1999, Byrkjedal et al 2008, highlighting that morphological data and complementary molecular approaches allow to solve complex taxonomical situations where an unclear differentiation among species exists.…”

Section: Discussioncontrasting

confidence: 50%

Eugerres castroaguirrei González-Acosta et Rodiles-Hernández, 2013 is a junior synonym of Eugerres mexicanus (Steindachner, 1863) (Actinopterygii: Perciformes: Gerreidae)

Martínez-Guevara¹

2015

Acta Ichthyol. Piscat.

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Background. The Lacandon mojarra, Eugerres castroaguirrei González-Acosta et Rodiles-Hernández, 2013, was described from the Grijalva-Usumacinta River basin (Mexico). According to the diagnosis E. castroaguirrei differs from the only other freshwater Gerreidae, the Mexican mojarra, Eugerres mexicanus (Steindachner, 1863) by the combination of certain morphological characters. However, a comparison of materials obtained in the Usumacinta River, besides of type materials and other preserved specimens, yielded contradictory results. Therefore, the objective of this paper was to clearly determine if E. mexicanus and E. castroaguirrei are subjective synonyms applying morphological and molecular analyses. Materials and methods. A total of 44 specimens were included in this study including the specimens collected specifi cally for this study, the type and non-type materials of Eugerres castroaguirrei from Colección de Peces de El Colegio de la Frontera Sur, Unidad San Cristóbal, Chiapas, México, and the types of Eugerres mexicanus, belonging to the Museum of Natural History, Wien, Austria. The morphological comparison also included data from the 42 specimens of E. castroaguirrei reported in the new species description. Biometric data were analysed as body proportions. We used Friedman's test to compare our biological materials with those used in the new species description. Molecular genetics comparisons on both putative freshwater gerreid species were made based on three mitochondrial gene fragments: 12SrRNA, 16SrRNA, and Cytochrome Oxidase subunit I (COI), and the nuclear gene: Recombination-Activating protein 1 (RAG1). Results. Neither the non-parametric Friedman's test nor the Nemenyi's procedure showed differences among individuals for both putative species in multiple pair-wise comparisons of body proportions. Moreover, the genetic divergence from all genes indicated that all individuals exhibited almost identical sequences, with inter-specifi c pair-wise genetic distances that ranged from 0.00% to 0.100% in all of the fragments. Conclusion. Our morphological and molecular genetics analyses demonstrated that E. mexicanus and E. castroaguirrei are subjective synonyms, therefore, Eugerres mexicanus (Steindachner, 1863) must be considered a valid species name, and Eugerres castroaguirrei González-Acosta et Rodiles-Hernández, 2013 a junior synonym.

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“…() who showed the occurrence of three taxa at species level. The CO1 gene has been used to resolve species identification problems at the molecular level, such as in Scomberomorus sierra (Ramírez‐Pérez, ), and in species of the genus Diapterus (Vergara‐Solana, ), and of the genus Eucinostomus (Martínez‐Guevara et al., ). Many other studies (Grant and Utter, ; Patarnello et al., ; Di Finizzio et al., ; Imaizumi et al., ; Lakra et al., ) demonstrated minimized uncertainty in species identification with the use of several genetic markers, and COI has acquired substantial attention as a useful marker for species identification and definition (Hebert et al., ).…”

Section: Discussionmentioning

confidence: 99%

Combining geometric morphometrics and genetic analysis to identify species ofOpisthonemaGill, 1861 in the eastern Mexican Pacific

et al. 2016

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Studies focusing on the specific identification of the taxonomic cast within the genus Opisthonema are scarce and contradictory, in spite of this species commercial importance and of the potential ecological impact that fisheries may have on the pelagic ecosystem. In this study, the specific composition of thread herrings Opisthonema (O. bulleri, O. medirastre, and O. libertate) in the southeastern region of the Gulf of California was identified using meristic characters, morphometric data, and mtDNA sequences. In this paper we supported the hypothesis that the commercial catch comprises three evolutionary entities with meristic and morphometric differences. The results were based on the number of ceratobranchial gill rakers, the presence of spicules on the gill rakers, the form of insertion of the gill rakers base onto the ceratobranchial segment, the geometric morphometrics of body shape, and the genetic distances from a fragment of Cytochrome Oxidase Subunit I gene (COI) of mtDNA. Specimens of Pacific thread herring were obtained from landings of the small pelagic fleet at Mazatlan, Sinaloa during 2011-2012. Taxonomic categories were assigned to 1060 individuals according to the measurement of meristic characters. A total of 228 thread herrings O. bulleri, (n = 76), O. medirastre (n = 76), and O. libertate (n = 76) were used in the morphometric analysis, and 25 specimens (O. bulleri n = 8, O. medirastre n = 7, and O. libertate n = 10) were used for genetic comparisons. The morphometric results showed differences among the three groups that had been previously identified using meristic characters, giving support to the existence of three discrete morphotypes. The percentage of sequence divergence of the COI gene supports the existence of three clades. Genetic distances were considerably lower within each clade than between clades. The results of this study provide sufficient evidence for the existence of three Pacific thread herring species in the southern Gulf of California.U.S.

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DNA sequence data analysis supports the taxonomic status of Eucinostomus dowii within the genus (Perciformes: Gerreidae)

Cited by 5 publications

References 23 publications

Supporting the existence of two isolated evolutionary lineages ofGerres(Perciformes: Gerreidae) in America

Supporting the existence of two isolated evolutionary lineages ofGerres(Perciformes: Gerreidae) in America

Eugerres castroaguirrei González-Acosta et Rodiles-Hernández, 2013 is a junior synonym of Eugerres mexicanus (Steindachner, 1863) (Actinopterygii: Perciformes: Gerreidae)

Combining geometric morphometrics and genetic analysis to identify species ofOpisthonemaGill, 1861 in the eastern Mexican Pacific

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