Genetic structure of the ornamental tetra fish species Piabucus melanostomus Holmberg, 1891 (CHARACIDAE, IGUANODECTINAE) in the Brazilian Pantanal wetlands inferred by mitochondrial DNA sequences

Borba, Rafael Splendore de; Silva, Edson Lourenço da; Ponzetto, Josi Margarete; Pozzobon, Allan Pierre Bonetti; Centofante, Liano; Alves, Anderson Luís; Parise-Maltempi, Patrícia Pasquali

doi:10.1590/s1676-06032013000100004

Cited by 6 publications

(4 citation statements)

References 12 publications

(11 reference statements)

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“…Molecular techniques, including sequences of mitochondrial DNA (mtDNA) have proven especially effective for the evaluation of the genetic diversity of a wide range of fish taxa, and the Control Region has been used for the analysis of the population structure of a large number of species (Santos et al, 2004;Calcagnotto et al, 2005;Fraga et al, 2007;Cheng et al, 2012;Borba et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Genetic differentiation in the populations of red piranha, Pygocentrus nattereri Kner (1860) (Characiformes: Serrasalminae), from the river basins of northeastern Brazil

et al. 2015

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The red piranha, Pygocentrus nattereri, is an important resource for artisanal and commercial fisheries. The present study determines the genetic differentiation among P. nattereri populations from the northeastern Brazilian state of Maranhão. The DNA was isolated using a standard phenol-chloroform protocol and the Control Region was amplified by PCR. The PCR products were sequenced using the didesoxyterminal method. A sequence of 1039 bps was obtained from the Control Region of 60 specimens, which presented 33 polymorphic sites, 41 haplotypes, һ =0.978 and π =0.009. The neutrality tests (D and Fs) were significant (P < 0.05) for most of the populations analyzed. The AMOVA indicated that most of the molecular variation (72%) arises between groups. The fixation index was highly significant (F ST = 0.707, P < 0.00001). The phylogenetic analyses indicated that the specimens represented a monophyletic group. Genetic distances between populations varied from 0.8% to 1.9%, and were <0.5% within populations. The degree of genetic differentiation found among the stocks of P. nattereri indicates the need for the development of independent management plans for the different river basins in order to preserve the genetic variability of their populations. Keywords

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Section: Introductionmentioning

confidence: 99%

Genetic differentiation in the populations of red piranha, Pygocentrus nattereri Kner (1860) (Characiformes: Serrasalminae), from the river basins of northeastern Brazil

et al. 2015

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“…The effect of local environmental changes related to flood pulses within the Pantanal is reflected in the species composition of several taxonomic groups of various forms (Zeilhofer & Schessl 1999, Oliveira & Calheiros 2000, Alho & Silva 2012, Catian et al 2018, as well as in the genetic aspects of some species (Borba et al 2013). Highly dispersed species can compensate for these environmental differences and maintain interlocking populations (Faria et al 2008).…”

Section: Discussionmentioning

confidence: 99%

EFFECT OF THE PANTANAL’S FLOODING HISTORY IN MORPHOMETRIC ASPECTS OF THE SOLITARY PARASITOID Campsomeris dorsata (HYMENOPTERA: SCOLIIDAE)

Aranda

2019

Oecol. Aust.

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The shape of an organism and the variation between related groups lie at the core of understanding evolution and interactions between phenotypes, genotypes, and environmental spaces. Due to the relief conditions and hydrological profile of the region, the areas inside the Pantanal have different flood histories in respect to the flood duration and the amount of water retained in the plain. The objective of this work was to evaluate the effect of the environmental flooding gradient on the geometric morphometry variation of Campsomeris dorsata (Hymenoptera: Scoliidae) wings in Pantanal, to understand if the variations in spatial distribution related to the flooding history interferes in the morphology of the wings by identifying where, how, and to what magnitude such changes occur. The wings were mounted between blade and coverslip, labeled, and prepared for morphometric measurements. The points of intersection of wing veins (landmarks) were determined using a stereoscopic microscope coupled with a camera. The linear measurements of the landmarks were transformed using Procrustes to remove the size effect, leaving only the shape of the wings. The transformed data was evaluated using PCA and MANOVA to identify if there were differences in relation to the geographical location of occurrence. Thirty-three male C. dorsata wings were measured, and there was a clear separation between 3 distinct wing form groups along the Pantanal distribution. The variation in wing shape could be associated with selection from local environmental conditions in areas with distinct flooding histories, influencing migratory aspects among populations within the Brazilian Pantanal. The data for this small species, that has low dispersal capacity, is solitary, and presents an intimate relationship with soil characteristics, which directly reflects flooding aspects in the Pantanal, only reinforces the need to conserve more areas in the Brazilian Pantanal, since genetic diversity is an important factor for conservation.

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“…Another factor that could explain these genetic characteristics is the flood pulse in the Paraguay River region [18,19]. This event influences biodiversity in the region [20] (Calheiros & Ferreira 1997) and was already shown to influence the genetic structure of fish species such as Piabucus melanostomus (Holmberg, 1891) [21].…”

Section: Discussionmentioning

confidence: 99%

Phylogeography and population structure of Prochilodus lineatus Valenciennes, 1837 (Pisces: Prochilodontidae) population from the Paraguay River Basin

Borba¹,

Ponzetto²,

Dalia³

et al. 2018

International Journal of Innovative Studies in Aquatic Biology

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Prochilodus lineatus is a species with high economic value that easily adapts to captive breeding. Hence it became a great interest for the development of fish breeding programs. Regular monitoring of genetic variation in natural fish stocks, especially in species of interest in conservation programs, is necessary to avoid a decline of genetic variability, which is of utmost importance for species conservation. In this sense, the objective of this study was to estimate the different genetic structures of P. lineatus and features of phylogeographic structures using mtDNA sequences of ATP synthase subunits 6 and 8 gene. The Neighbor-Joining analysis presented all kinds of population grouped in one clade. We detected low genetic distance values among the population (0, 5%), and 27, 4% for comparisons with the outer group. The low genetic distance and low AMOVA FST values suggest that, the population of the Mato Grosso Pantanal is panmictic.

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Genetic structure of the ornamental tetra fish species Piabucus melanostomus Holmberg, 1891 (CHARACIDAE, IGUANODECTINAE) in the Brazilian Pantanal wetlands inferred by mitochondrial DNA sequences

Cited by 6 publications

References 12 publications

Genetic differentiation in the populations of red piranha, Pygocentrus nattereri Kner (1860) (Characiformes: Serrasalminae), from the river basins of northeastern Brazil

Genetic differentiation in the populations of red piranha, Pygocentrus nattereri Kner (1860) (Characiformes: Serrasalminae), from the river basins of northeastern Brazil

EFFECT OF THE PANTANAL’S FLOODING HISTORY IN MORPHOMETRIC ASPECTS OF THE SOLITARY PARASITOID Campsomeris dorsata (HYMENOPTERA: SCOLIIDAE)

Phylogeography and population structure of Prochilodus lineatus Valenciennes, 1837 (Pisces: Prochilodontidae) population from the Paraguay River Basin

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