Abstract
The Atlantic thread herring Opisthonema oglinum, also known as Bermuda herring belongs to the family Clupeidae (Clupeiformes). Because of their economic and ecological importance, this species has been the target of several scientific studies. However, this is the first study of population genetics in O. oglinum. We sampled individuals of O. oglinum from seven localities along the Brazilian coast in South Atlantic, totaling 225 DNA sequences of control region in mitochondrial DNA (mtDNA). The present results revealed no deviations from Hardy-Weinberg equilibrium as well as the presence of a single gene pool since high gene flow and non-significant population structure have been detected among populations. The D (Tajima) and Fs (Fu) neutrality tests were negative. In spite of non-significant D values, all Fs estimates were significant, indicating population expansion.
Highlights
The Atlantic thread herring Opisthonema oglinum, known as Bermuda herring belongs to the family Clupeidae (Clupeiformes)
Population analysis in atlantic thread herring from the Brazilian Coast
The negative values obtained by the Tajima D and Fu’s Fs tests indicated that the population of O. oglinum from the Brazilian coast are under genetic equilibrium
Summary
The Atlantic thread herring Opisthonema oglinum, known as Bermuda herring belongs to the family Clupeidae (Clupeiformes) Because of their economic and ecological importance, this species has been the target of several scientific studies. The genetic variation can be estimated from the control or D-loop region of mitochondrial DNA (mtDNA), as commonly reported in analyses of population genetics of fishes (Speller et al, 2013; Mamzunder and Alam, 2009; Debes et al 2008; Kristoffersen and Magoulas 2008; Atarhouch et al, 2006; Liu et al, 2006; Avise, 2004). This mtDNA marker has been selected to the present analyses
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