Froese, R. and D. Pauly. Editors. (). FishBase. Macrodon ancylodon (Bloch & Schneider, ). Accessed through: World Register of Marine Species at. Macrodon ancylodon — Overview. Yellow Mouth Salmon Media. Image of Macrodon ancylodon. Macrodon ancylodon Trusted. Creative Commons. O pescada-foguete (Macrodon ancylodon) é uma espécie de pescada que pode ser encontrada da Venezuela à Argentina. Tais animais medem cerca de

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Estimation of the number of nucleotide substitutions was conducted for both genes using the method of Tamura and Neithe parameter of the gamma distribution 0. Even when specimens from the same or close geographic regions compose a clade, the grouping is not statistically supported.

Cladograms reflecting similarities between the populations were constructed using the distance matrix and maximum-parsimony techniques, deletions and insertions being treated as a fifth base in the parsimony analyses. ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Species Macrodon ancylodon King weakfish. The ice ages are also considered one of the phenomena that caused changes in environmental conditions, resulting in isolation and later differentiation of populations Beheregaray et al.

The mean base composition of this gene was For the cytochrome b gene close-related species of Selene Selene setapinis, S. Because of its wide distribution this fish may be subject to geographic isolation and this may have resulted in distinct populations along its coastal range. Mol Dev Evol Mol Biology Evol 15 In our work, the lack of geographic structuring in the Macrodon populations within each group is indicative of recent genetic flow.

Indeed, Lowe-Mcconnell states that water temperature is one of the main factors that affect the distribution of marine fish, while Schroth et al. According to some authors, population isolation can occur during strong alterations in environmental conditions, such as climatic changes and geological phenomena Stepien et al.


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Porto Alegre, Brasil, pp To investigate differences between king weakfish populations we used the cytochrome b and 16S rRNA genes to characterize M. According to Brandini et al.

Pomacentridae as determined by mitochondrial ribosomal DNA data. The 16S rRNA mitochondrial gene has also been shown to be a good marker to differentiate fish species, and has been macrovon in ancylodonn intergeneric and interspecific studies in several families of Perciformes Ritchie et al.

The North Brazil current influences part of the northeastern and all the northern coast of Brazil as far as Venezuela, while the Brazil current influences part of the northeastern coast and the southeastern and southern coast of Brazil and some regions of the Argentinean coast Castro and Miranda, ; Brandini et al.

Phylogenetic analyses The two DNA segments studied did not show any indication of saturation in their sequences, so that both could be used in the phylogenetic analyses. Bilateria bilaterally symmetrical animals. BMC Evol Biol 2: Studies carried out in the tropical and subtropical regions of Brazil have shown that this species has distinct reproduction periods, December and February in the South Juras and Yamagguti, ; Yamaguti, ; Vazzoler, and July-August and October-December in the north Camargo-Zorro, J Mol Evol Defining Unique Units in Population Conservation.

Tables ancylodob and 5 present the nucleotide divergence matrices constructed using the method of Tamura and Nei for the two segments analyzed in the present study. ancylpdon

ADW: Macrodon ancylodon: CLASSIFICATION

Several factors are known to influence the dispersion of marine species Palumbi,including spawning behavior, sharp temperature changes, salinity gradients and larval retention mechanisms Sinclair, Table 2 shows that 29 different cytochrome b sequences were obtained from 53 M.

Saturation was not observed in the 16S rRNA sequences. Acknowledgments This paper is contribution n. The degree of confidence for the groups on the maximum-parsimony tree was evaluated by bootstrap replicates Felsenstein, In a study of the meristic and morphometric traits of M. Integrated Taxonomic Information System.


Comp Applic Biosci 5 3: The levels of divergence found between tropical and subtropical M. This paper is contribution n. Wikipedia 10 entries edit. Mol Biol Evol Only the cytochrome b gene was used in this type of analysis, the genetic distance matrix being obtained using the method of Tamura and Nei and the geographic distance matrix constructed by transforming the latitude mwcrodon the geographic coordinates of the sample points into kilometers, with the help of a program available on the site www.

Services on Demand Journal. Mol Phylogenet Evol 15 2: A possible cause for the marked genetic differentiation of the tropical and subtropical Macrodon groups could be patterns of oceanic circulation caused by surface marine currents, e.

Futuyma postulated that low levels of genetic flow and population isolation are important for speciation to take place. Discussion Genetic characterization of M. All the mafrodon of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. The Animal Diversity Web is an educational resource written largely by and for college students.

Rev Bras Biol 56 1: Help us improve the site by taking our survey. Sinauer Associates, Sunderland, Massachussets.

Macrodon ancylodon

Figure 2 shows 24 nucleotide sites 45, 46, 55,,,,,, in the cytochrome b gene that can be clearly distinguished in the tropical and subtropical Macrodon groups. Considering that this species represents an important economic resource, confirmation of whether M. Because of the low population genetic variability in the 16S rRNA and cytochrome b genes, clearly defined subgroups could not be identified in the tropical and subtropical groups either in the neighbor-joining or maximum-parsimony trees, so that that each group formed a ancylodln polytomous clade.