Show simple item record Cardoso, Luis Gustavo Silva, Simoni Santos da Haimovici, Manuel 2016-01-18T22:38:19Z 2016-01-18T22:38:19Z 2012
dc.identifier.citation CARDOSO, Luis Gustavo; SILVA, Simoni Santos da; HAIMOVICI, Manuel. Differences in the otoliths support the distinction of the genus Macrodon into two species in the south-western Atlantic Ocean. Journal of the Marine Biological Association of the UK, v. 5, p. 1-3, 2012.Disponível em: <>. Acesso em 18 Jan 2016. pt_BR
dc.description.abstract Morphological differences in the otoliths of Macrodon atricauda from Rio Grande do Sul State (southern Brazil) and of M. ancylodon from Para´ State (northern Brazil) were examined. Until recently, these were considered two populations of the same species. Although relatively similar in their general shape, those of large M. atricauda (.300 mm total length) were shorter and thinner and their outer surface was convex (those of the smallest specimens had a more lobullated antero-dorsal margin) whereas those of similarly sized M. ancylodon were larger, thicker and less lobullated. These features of the otoliths allow these morphologically similar species to be discriminated. The pattern of translucent and opaque bands in sectioned otoliths also differed. The otoliths of M. atricauda showed clear annual banding which allowed ageing, while those of M. ancylodon had no distinct alternate bands. pt_BR
dc.language.iso eng pt_BR
dc.rights restrict access pt_BR
dc.subject Otoliths pt_BR
dc.subject Species differentiation pt_BR
dc.subject Macrodon pt_BR
dc.subject South-western Atlantic pt_BR
dc.title Differences in the otoliths support the distinction of the genus macrodon into two species in the south-western Atlantic Ocean pt_BR
dc.type article pt_BR
dc.identifier.doi 10.1017/S1755267212000802 pt_BR

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