Morphometric and genetic differentiation among populations of Eupemphix nattereri (Amphibia, Anura, Leiuperidae) from central Brazil

Silva, Daniela de Melo e; Cruz, Aparecido D. da; Telles, Mariana Pires de Campos; Diniz‐Filho, José Alexandre Felizola

doi:10.1590/s0073-47212008000400013

Cited by 10 publications

(19 citation statements)

References 46 publications

(43 reference statements)

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“…The genetic structure of populations, caused by restricted gene flow, random genetic drift, new mutations and natural selection of subpopulations in different environments may be revealed as variations in color and local adaptations on morphological features that indicate populational divergences (SPREITZER et al, 2012). Besides, genetic and environmental differences can cause diversity in ontogenetic development, resulting in body size variation (SILVA et al, 2008). Even among populations subjected to slightly differentiated environmental conditions, morphological differences may occur as a result of evolutionary processes other than local selection.…”

Section: Final Considerationsmentioning

confidence: 99%

The contribution of genetics in the study of the sea-bob shrimp populations from the brazilian coast

2013

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Genetic studies can provide several important informations for sustainable fisheries management, mainly for the identification of different genetic stocks. In Brazil, genetic studies of the sea-bob shrimp, Xiphopenaeus kroyeri, produced important new information on the systematics of the genus, demonstrating the presence of anonymous cryptic species and outlining their geographical distribution and the levels of genetic diversity and population structuring of Brazilian species. Allozymes and sequence polymorphisms of the mitochondrial COI gene have also been used to beget diagnosis systems for the correct species identification. Recently, geometric morphometrics emerged as a powerful methodology for identifying operational taxonomic units, confirming genetic data with great similarity of results, and representing a promising tool to assist the identification of fishery stocks. Geometric morphometrics analyses were used to characterize Xiphopenaeus samples from Brazil, showing significant differences among populations, confirming previous patterns revealed by molecular data. This study gathers the information produced so far about the molecular systematics, patterns of geographic distribution of the cryptic Xiphopenaeus species, genetic and morphometric characterizations of variability and delineation of population boundaries. It intends to determine distribution and structuring consensus patterns of the genetic variability, aiming to support management and conservation actions as well as to identify gaps of knowledge and direct future efforts in order to address them.Keywords: Xiphopenaeus kroyeri; Xiphopenaeus riveti; cryptic species; molecular systematics; geometric morphometrics; fisheries genetics A CONTRIBUIÇÃO DA GENÉTICA NO ESTUDO DAS POPULAÇÕES DE CAMARÃO SETE-BARBAS DO LITORAL BRASILEIRO RESUMOEstudos genéticos podem fornecer diversas informações importantes para o manejo sustentável da pesca, tendo um relevante papel na identificação de estoques geneticamente distintos. No Brasil, estudos genéticos do camarão sete-barbas, Xiphopenaeus kroyeri, têm produzido novas e importantes informações sobre a sistemática do gênero, revelando espécies crípticas anônimas e delineando suas distribuições geográficas e os níveis de diversidade genética e estruturação populacional das espécies brasileiras. Alozimas e polimorfismos de sequência do gene mitocondrial COI também têm sido usados para gerar sistemas de diagnóstico para a identificação de espécies. Recentemente, a morfometria geométrica surgiu como uma metodologia poderosa para a identificação de unidades taxonômicas operacionais, confirmando os dados genéticos com grande similaridade de resultados, e representando uma ferramenta promissora para auxiliar na identificação dos estoques pesqueiros. Análises de morfometria geométrica foram utilizadas para caracterizar amostras de Xiphopenaeus do Brasil, mostrando diferenças significativas entre as populações, confirmando padrões anteriores revelados por dados moleculares. Este trabalho reúne as informações ...

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Section: Final Considerationsmentioning

confidence: 99%

The contribution of genetics in the study of the sea-bob shrimp populations from the brazilian coast

2013

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“…The causes of morphological differences between populations are often quite difficult to explain (Poulet et al, 2004;Silva et al, 2008). It has been suggested that the morphological characteristics of fishes are determined by an interaction between genetic and environmental factors (Swain and Foote, 1999;Poulet et al, 2004;Salini et al, 2004;Pinheiro et al, 2005;AnvariFar et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

“…Phenotypic variability may not necessarily reflect population differentiation at the molecular level (Silva et al, 2008). Thus, we supplemented our morphological results with those obtained by the RAPD technique.…”

Section: Discussionmentioning

confidence: 99%

“…The development of RAPD markers allows the examination of genome variation without a priori knowledge of DNA sequences (Welsh and McClelland, 1990). This method had been used to detect genetic diversity within and among strains, species and subspecies, and to assess genome variability (Silva et al, 2008). Our present study had the following objectives: to i) evaluate patterns of genetic variation in the primary range of the species by examining banding patterns using RAPD-PCR techniques; ii) investigate the impact of dam construction on the Tajan River on possible differences between up-and downstream groups of C. c. gracilis using analysis of morphometric characters and the RAPD markers; iii) associate the genetic results with morphometric data using association analysis.…”

Section: Introductionmentioning

confidence: 99%

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Fourteen years after the Shahid-Rajaei dam construction: an evaluation of morphometric and genetic differentiation between isolated up- and downstream populations of Capoeta capoeta gracilis (Pisces: Cyprinidae) in the Tajan River of Iran

AnvariFar

Farahmand²,

Silva³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. We evaluated the effects of the Shahid-Rajaei dam, 14 years after its construction, on morphometric and genetic divergence between up-and downstream populations of the Iranian fish SiahMahi (Capoeta capoeta gracilis). Sixty-six specimens were analyzed. There were significant differences between the 2 groups in the means of 16 morphometric characters (univariate analysis). In discriminant function analysis, the proportion of individuals classified into their original groups was 97 and 100% for up-and downstream populations, respectively. Principal component analysis of morphometric data demonstrated that the up-and downstream samples of Siah-Mahi are clearly distinct. In the genetic analysis, 6 informative primers produced 89 polymorphic bands with 95% polymorphism. In association analysis between morphological and genetic data, 63 of 89 genetic markers were significantly correlated with the 16 morphometric characters. We conclude that these are 2 morphologically and genetically distinct populations of C. c. gracilis, probably due to limited downstream dispersal and elimination of upstream migration.

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“…La variación geográfica en las estructuras morfológicas, particularmente el tamaño corporal, es común en muchas especies (Schäuble 2004, Silva et al 2008. Entre los anuros, los análisis de variación geográfica intraespecífica en morfología han revelado una amplia variación en el tamaño del cuerpo Schäuble 2004).…”

Section: Discussionunclassified

Variación morfométrica y geográfica entre poblaciones de <em>Hypsiboas cordobae</em> (Anura: Hylidae) en Argentina

Baraquet

Grenat

Salas

et al. 2012

URJ

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Las diferencias fenotípicas intraespecíficas entre poblaciones separadasgeográficamente es común entre los anfibios anuros. En el presentetrabajo se realiza una caracterización morfométrica de Hypsiboascordobae, con el objetivo de estudiar la variación geográfica a lo largode la distribución de la especie. Se midieron 15 variables un totalde 86 individuos, pertenecientes a seis localidades de las provinciasde Córdoba y San Luís. Se observó dimorfismo sexual en diez de lasvariables. El análisis comparativo mostró diferencias significativasentre poblaciones, y el análisis discriminante mostró altos porcentajesde clasificación (87,50%). Ocho variables morfométricas mostraronrelación significativa y positiva con la latitud; mientras que diez variablesmostraron relación significativa y positica con la altitud. Sin embargo, enambos casos las correlaciones entre las distancias morfométricas y laslatitudinales/altitudinales no resultaron significativas (Test de Mantel).Esta variación geográfica en la morfometría de la especie puede debersea diferencias ambientales, o podrían deberse también a la edad de losindividuos. Por lo tanto, estos datos podían ser complementados conestudios relacionados directamente a las condiciones ambientales decada localidad, como así también estudios de esqueletocronología quepermitan determinar la edad de los individuos.ABSTRACTMorphometric differentiation and geographic variation amongpopulations of Hypsiboas cordobae (Anura: Hylidae). Intraspecificphenotypic differentiation among geographically separatedpopulations is common in anurans. We performed morphometricanalyses of the endemic frog Hypsiboas cordobae in order to assess thegeographic variation of morphometric variables along of distribution ofthe species. We measured 15 morphometric variables on 86 individualsfrom six localities of Córdoba and San Luís provinces. We foundsexual dimorphism in ten variables. The comparative analysis showedsignificant differences between populations and discriminant analysesshowed high percentages of classification (87,50%). Eight morphometricvariables showed positive correlation with latitude; and ten variablesshowed positive correlation with altitude. However, the correlationsbetween morphometric distances and latitudinal/altitudinal were notsignificant. This geographic variation in the morphometry of the speciesmay be due to environmental differences, or may be due to the age ofindividuals. Therefore, these data could be supplemented by studiesdirectly related to the environmental conditions of each locality, as wellas skeleton-chronological study to determine individual age.

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Morphometric and genetic differentiation among populations of Eupemphix nattereri (Amphibia, Anura, Leiuperidae) from central Brazil

Cited by 10 publications

References 46 publications

The contribution of genetics in the study of the sea-bob shrimp populations from the brazilian coast

The contribution of genetics in the study of the sea-bob shrimp populations from the brazilian coast

Fourteen years after the Shahid-Rajaei dam construction: an evaluation of morphometric and genetic differentiation between isolated up- and downstream populations of Capoeta capoeta gracilis (Pisces: Cyprinidae) in the Tajan River of Iran

Variación morfométrica y geográfica entre poblaciones de <em>Hypsiboas cordobae</em> (Anura: Hylidae) en Argentina

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