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Differences in the otoliths support the distinction of the genus Macrodon into two species in the south-western Atlantic Ocean

Published online by Cambridge University Press:  19 September 2012

Luis Gustavo Cardoso ,
Simôni Santos  and
Manuel Haimovici
Luis Gustavo Cardoso*
Affiliation:
Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Caixa Postal 474, Avenida Itália Km 8, CEP 96201-900, Rio Grande, RS, Brazil
Simôni Santos
Affiliation:
Instituto de Estudos Costeiros, Universidade Federal do Pará, Campus de Bragança, Pará, Brazil
Manuel Haimovici
Affiliation:
Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Caixa Postal 474, Avenida Itália Km 8, CEP 96201-900, Rio Grande, RS, Brazil
*
Correspondence should be addressed to: L.G. Cardoso, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Caixa Postal 474, Avenida Itália Km 8, CEP 96201-900, Rio Grande, RS, Brazil email: [email protected]
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Abstract

Morphological differences in the otoliths of Macrodon atricauda from Rio Grande do Sul State (southern Brazil) and of M. ancylodon from Pará 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.

Keywords

otolithsspecies differentiationMacrodonsouth-western Atlantic
Type
Research Article
Information
Marine Biodiversity Records , Volume 5 , August 2012 , e93
Copyright
Copyright © Marine Biological Association of the United Kingdom 2012

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References

REFERENCES

Campana, S.E. and Casselman, J.M. (1993) Stock discrimination using otolith shape analysis. Canadian Journal of Fisheries and Aquatic Sciences 50, 1062–1083.CrossRefGoogle Scholar
Camargo, M. and Isaac, V. (2005) Reproductive biology and spatio-temporal distribution of Stellifer rastrifer, Stellifer naso and Macrodon ancylodon (Sciaenidae) in the Caeté estuary, northern Brazil. Brazilian Journal of Oceanography 53, 13–21.Google Scholar
Cardoso, L.G. and Haimovici, M. (2011) Age and changes in growth of the king weakfish Macrodon atricauda (Günther, 1880) between 1977 and 2009 in southern Brazil. Fisheries Research 111, 177–187.Google Scholar
Clarke, K.R. and Warwick, R.M. (2001) Change in marine communities: an approach to statistical analysis and interpretation. 2nd edition. Plymouth: PRIMER-E, 172 pp.Google Scholar
Carvalho-Filho, A., Santos, S. and Sampaio, I. (2010) Macrodon atricauda (Günther, 1880) (Perciformes: Sciaenidae), a valid species from the southwestern Atlantic, with comments on its conservation. Zootaxa 2519, 48–58.Google Scholar
Casatti, L. and Menezes, N.A. (2003) Sciaenidae. In Menezes, N.A., Buckup, P.A., Figueiredo, J.L. and Moura, R.L. (eds) Catálogo das espécies de peixes marinhos do Brasil. São Paulo: Museu de Zoologia da Universidade de São Paulo, pp. 86–89.Google Scholar
Green, B.S., Mapstone, B.D., Carlos, G. and Begg, G.A. (2009) Introduction to otoliths and fisheries in the tropics. In Green, B.S., Mapstone, B.D., Carlos, G. and Begg, G.A. (eds) Tropical fish otoliths: information for assessment, management and ecology. 1st edition. New York: Springer, pp. 1–19.Google Scholar
Haimovici, M. (1988) Crecimiento de la pescadilla real Macrodon ancylodon (Sciaenidae) en el sur de Brasil. Publicación Cientifica de la Comisión Míxta del Frente Marítimo 4, 99–106.Google Scholar
Haimovici, M. (1998) Present state and perspectives for the southern Brazil shelf demersal fisheries. Fisheries Management and Ecology 5, 277–289.CrossRefGoogle Scholar
Haimovici, M., Castello, J.P. and Vooren, C.M. (1997) Fisheries. In Seeliger, U., Odebrecht, C. and Castello, J.P. (eds) Subtropical convergence environments: the coast and sea in the southwestern Atlantic. Berlin: Springer, pp. 183–196.CrossRefGoogle Scholar
Härkönen, T. (1986) Guide to the otoliths of the bony fishes of the Northeast Atlantic. Hellerup, Denmark: Danbiu Aps Biological Consultants, 256 pp.Google Scholar
Isaac, V., Santo, R.V.E., Bentes, B., Frédou, F.L., Mourão, K.R.M. and Frédou, T. (2009) An interdisciplinary evaluation of fishery production systems off the state of Pará in North Brazil. Journal of Applied Ichthyology 25, 244–255.Google Scholar
Juras, A.A. and Yamaguti, N. (1989) Sexual maturity, spawning and fecundity of king weakfish Macrodon ancylodon, caught off Rio Grande do Sul State (southern coast of Brazil). Boletim do Instituto Oceanográfico, São Paulo 37, 51–58.CrossRefGoogle Scholar
Malcom, J.S., Watson, G. and Heccht, T. (1995) Otoliths atlas of southern African marine fishes. Ichthyological Monographs of the J.L.B. Smith Institute of Ichthyology, No 1, 253 pp.Google Scholar
Militelli, M.I. and Macchi, G.J. (2004) Spawning and fecundity of king weakfish, Macrodon ancylodon, in the Río de la Plata estuary, Argentina–Uruguay. Journal of the Marine Biological Association of the United Kingdom 84, 443–447.CrossRefGoogle Scholar
Santos, S., Hrbek, T., Farias, I.P., Schneider, H. and Sampaio, I. (2006) Population genetic structuring of the king weakfish, Macrodon ancylodon (Sciaenidae), in Atlantic coastal waters of South America: deep genetic divergence without morphological change. Molecular Ecology 15, 4361–4373.CrossRefGoogle Scholar
Yamaguti, N. (1967) Desova da pescada-foguete Macrodon ancylodon . Boletim do Instituto Oceanográfico, São Paulo 16, 101–106.CrossRefGoogle Scholar
Yamaguti, N. (1968) Mortalidade da pescada-foguete Macrodon ancylodon . Boletim do Instituto Oceanográfico, São Paulo 17, 67–70.CrossRefGoogle Scholar
Yamaguti, N. and Santos, E.P. (1966) Crescimento da pescada foguete Macrodon ancylodon: aspecto quantitativo. Boletim do Instituto Oceanográfico, São Paulo 15, 75–78.Google Scholar
Zar, J.H. (1996) Biostatistical analysis. 2nd edition. Englewood Cliffs, NJ: Prentice-Hall, 918 pp.Google Scholar