2016
DOI: 10.1590/1982-0224-20150184 View full text |Buy / Rent full text
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Abstract: Coastal and marine environments are characterized by a lack of evident physical barriers or geographic isolation, and it may be difficult to understand how divergence can arise and be sustained in marine environments. The identification of 'soft' barriers is a crucial step towards the understanding of gene flow in marine environments. The marine catfishes of the family Ariidae are a demersal group with restricted migratory behavior, no pelagic larval stages, and mechanisms of larval retention, representing a p… Show more

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“…31-32), and at different stages of ontogenetic development (Figs 30,32,(33)(34)(35). The absence of any significant genetic differentiation between Notarius grandicassis and Notarius parmocassis species are the result of a recent speciation process, resulting from occurrence of the species in different geographic areas with distinct environmental conditions and selective pressures (da Silva et al, 2016), in the Atlantic Ocean of South America (Fig. 36).…”
Section: Resultsmentioning
“…The lack of genetic differentiation between Notarius grandicassis and N. parmocassis, despite the existence of morphological differences, is interpreted here as a consequence of the evolutionary history of these species, which are found in different geographic areas with distinct environmental conditions (da Silva et al, 2016). However, little is known of the differentiation of the coastal and estuarine fish fauna of the Atlantic coast of South America and environmental factors that can contribute to this differentiation (see Santos, Hrbek, Farias, Schneider, & Sampaio, 2006;da Silva et al, 2016).…”
Section: Ecoregions and Evolutionary Lineages On The Atlantic Coast Omentioning
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“…Among this primarily freshwater fish group, the family Ariidae is marine, generally more abundant in shallow coastal waters, in muddy or sandy bottoms (Marceniuk 2005, Silva et al 2016. In general, the marine catfishes seek out river mouths and coastal lagoons during the spawning period, and they show reproductive adaptations as mouthbrooding (Chaves & Vendel 1996, Ferraris Jr. 2007).…”
Section: Introductionmentioning
“…The family Ariidae inhabits marine waters and is abundant in coastal areas associated with muddy or sandy bottoms (Marceniuk 2005;Silva et al 2016), seeking out rivers and coastal lagoons during the spawning period (Ferraris 2007).…”
Section: Introductionmentioning