Skip to main content
×
Home

Age and growth of franciscana dolphins, Pontoporia blainvillei (Cetacea: Pontoporiidae) incidentally caught off southern Brazil and northern Argentina

  • Silvina Botta (a1), Eduardo R. Secchi (a1), Mônica M.C. Muelbert (a1), Daniel Danilewicz (a2), Maria Fernanda Negri (a3), Humberto Luis Cappozzo (a3) and Aleta A. Hohn (a4)...
Abstract

Age and length data of 291 franciscana dolphins (Pontoporia blainvillei) incidentally captured on the coast of Rio Grande do Sul State (RS), southern Brazil, were used to fit growth curves using Gompertz and Von Bertalanffy growth models. A small sample of franciscanas (N = 35) from Buenos Aires Province (BA), Argentina, were used to see if there are apparent growth differences between the populations. Male and female franciscana samples from both areas were primarily (78–85%) <4 years of age. The Von Bertalanffy growth model with a data set that excluded animals <1 year of age provided the best fit to data. Based on this model, dolphins from the RS population reached asymptotic length at 136.0 cm and 158.4 cm, for males and females, respectively. No remarkable differences were observed in the growth trajectories of males and females between the RS and BA populations.

Copyright
Corresponding author
Correspondence should be addressed to: S. Botta, Laboratório de Mamíferos Marinhos, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Cx.P. 474, Rio Grande, RS 96201-900, Brasil email: silbotta@yahoo.com
References
Hide All
American Society of Mammalogists (1961) Standardized methods for measuring and recording data on the smaller cetaceans. Journal of Mammalogy 42, 471476.
Barlow J. (1985) Variability, trends, and biases in reproductive rates of spotted dolphins, Stenella attenuata. Fishery Bulletin 83, 657669.
Barlow J. and Hohn A. (1984) Interpreting spotted dolphin age distributions. NOAA Technical Memorandum, NOAA-TM-NMFS-SWFC-48, 22 pp.
Barlow J. and Boveng P.L. (1991) Modeling mortality for marine mammal populations. Marine Mammal Science 7, 5065.
Barreto A.S. and Rosas F.C.W. (2006) Comparative growth analysis of two populations of Pontoporia blainvillei on the Brazilian coast. Marine Mammal Science 22, 644653.
Bertozzi C.P. and Zerbini A.N. (2002) Incidental mortality of toninha (Pontoporia blainvillei) in the artisanal fishery of Praia Grande, São Paulo State, Brazil. Latin American Journal of Aquatic Mammals (Special Issue) 1, 153160.
Cappozzo H.L., Negri M.F., Pérez F.H., Albareda D., Monzón F. and Corcuera J.F. (2007) Incidental mortality of franciscana dolphin (Pontoporia blainvillei) in Argentina. Latin American Journal of Aquatic Mammals 6, 127137.
Carlson J.K. and Baremore I.E. (2005) Growth dynamics of the spinner shark (Carcharhinus brevipinna) off the United States southeast and Gulf of Mexico coasts: a comparison of methods. Fishery Bulletin 103, 280291.
Chivers S.J. (2002) Cetacean life history. In Perrin W.F., Würsig B. and Thewissen J.G.M. (eds) Encyclopedia of marine mammals. San Diego, CA: Academic Press, pp. 221225.
Chivers S.J. (2002b) Age structure of female eastern spinner dolphins (Stenella longirostris orientalis) incidentally killed in the eastern tropical pacific tuna purse-seine fishery. 10. La Jolla, United States of America: Southwest Fisheries Science Center. National Marine Fisheries Service, NOAA, 10 pp.
Clark S.T., Odell D.K. and Lacinak C.T. (2000) Aspects of growth in captive killer whales (Orcinus orca). Marine Mammal Science 16, 110123.
Cockcroft V.G. and Ross G.J.B. (1990) Age, growth, and reproduction of bottlenose dolphins Tursiops truncatus from the east coast of southern Africa. Fishery Bulletin 88, 289302.
Corcuera J.F. (1994) Incidental mortality of franciscana dolphin in Argentine waters: the threat of small fishing camps. Reports of the International Whaling Commission (Special Issue) 15, 291294.
Corcuera J., Monzón F. and Aguilar A. (1990) Patrón de osificación de epífisis vertebrales en franciscanas (Pontoporia blainvillei). Abstracts of the IV Reunión de Trabajo de Especialistas en Mamíferos Acuáticos de América de Sur, Valdivia, Chile, 1990, p. 21.
Corcuera J., Monzón F., Crespo E.A., Aguilar A. and Raga J.A. (1994) Interactions between marine mammals and the coastal fisheries of Necochea and Claromecó (Buenos Aires, Argentina). Reports of the International Whaling Commission (Special Issue) 15, 283290.
Corcuera J., Cornejo I. and Monzón F. (1996) Madurez física del delfín franciscana por medio de un método cuantificado para el análisis de la osificación de la columna vertebral. Abstracts of the VII Reunión de Trabajo de Especialistas en Mamíferos Acuáticos de América del Sur, Viña del Mar, Chile, 1996, p. 91.
Crespo E.A., Harris G. and González R. (1998) Group size and distribution range of the franciscana, Pontoporia blainvillei. Marine Mammal Science 14, 845849.
Danil K. and Chivers S.J. (2007) Growth and reproduction of female short-beaked common dolphins, Delphinus delphis, in the eastern tropical Pacific. Canadian Journal of Zoology 85, 108121.
Danilewicz D., Claver J.A., Perez Carrera A.L., Secchi E.R. and Fontoura N.F. (2004) Reproductive biology of male franciscanas (Pontoporia blainvillei) (Mammalia: Cetacea) from Rio Grande do Sul, southern Brazil. Fishery Bulletin 102, 581592.
Di Beneditto A.P.M. and Ramos R.M.A. (2001) Biology and conservation of the franciscana (Pontoporia blainvillei) in the north of Rio de Janeiro State, Brazil. Journal of Cetacean Research and Management 3, 185192.
Fernandez S. and Hohn A.A. (1998) Age, growth, and calving season of bottlenose dolphins, Tursiops truncatus, off coastal Texas. Fishery Bulletin 96, 357365.
Ferrero R.C. and Walker W.A. (1995) Growth and reproduction of the common dolphin, Delphinus delphis Linnaeus, in the offshore waters of the North Pacific Ocean. Fishery Bulletin 93, 483494.
Ferrero R.C. and Walker W.A. (1999) Age, growth and reproductive patterns of Dall's porpoise (Phocoenoides dalli) in the central North Pacific Ocean. Marine Mammal Science 15, 273313.
Galatius A. (2005) Sexually dimorphic proportions of the harbour porpoise (Phocoena phocoena) skeleton. Journal of Anatomy 206, 141154.
Hammill M.O., Kingsley M.C.S., Beck G.G. and Smith T.G. (1995) Growth and condition in the Northwest Atlantic harp seal. Canadian Journal of Fisheries and Aquatic Sciences 52, 478488.
Hohn A.A., Read A.J., Fernandez S., Vidal O. and Findley L.T. (1996) Life history of the vaquita, Phocoena sinus (Phocoenidae, Cetacea). Journal of Zoology 239, 235251.
Kasuya T. and Brownell R.L. Jr. (1979) Age determination, reproduction, and growth of the franciscana dolphin, Pontoporia blainvillei. Scientific Reports of the Whales Research Institute 31, 4567.
Kinas P.G. (2002) The impact of incidental kills by gill nets on the franciscana dolphin (Pontoporia blainvillei) in Southern Brazil. Bulletin of Marine Science 70, 409421.
Lázaro M., Lessa E.P. and Hamilton H. (2004) Geographic genetic structure in the franciscana dolphin (Pontoporia blainvillei). Marine Mammal Science 20, 201214.
Leberg P.L., Brisbin L., Smith M.H. and White G.C. (1989) Factors affecting the analysis of growth patterns of large mammals. Journal of Mammalogy 70, 275283.
Lockyer C., Heide-Jørgensen M.P., Jensen J., Kinze C.C. and Sørensen T.B. (2001) Age, length and reproductive parameters of harbour porpoises Phocoena phocoena (L.) from West Greenland. Journal of Marine Science 58, 154162.
Mendez M., Rosenbaum H.C. and Bordino P. (2007) Conservation genetics of the franciscana dolphin in Northern Argentina: population structure, by-catch impacts and management implications. Conservation Genetics 9, 419435.
Monzón F. and Corcuera J.F (1991) Franciscana Pontoporia blainvillei (Gervais and d'Orbigny, 1844). In Cappozzo H.L. and Junín M. (eds) Estado de conservación de los mamíferos marinos del Atlántico sudoccidental. Informes y estudios del Programa de Mares Regionales del PNUMA, No 138, pp. 1622.
Moreau J. (1987) Mathematical and biological expression of growth in fishes: recent trends and further developments. In Summerfelt R.C. and Hall G.E. (eds) The age and growth of fish. Ames, Iowa: Iowa State University Press, pp. 81113.
Negri M.F., Paso Viola N. and Cappozzo L. (2004) Madurez física y sexual del delfín franciscana capturado en redes de pesca en el sur de la provincia de Buenos Aires. Abstracts of the XIX Jornadas Argentinas de Mastozoologia, Puerto Madryn, Argentina, 2004, p. 96.
Ott P.H. (2002) Diversidade genética e estrutura populacional de duas espécies de cetáceos do Atlântico Sul Ocidental: Pontoporia blainvillei e Eubalaena australis. PhD thesis. Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Ott P.H., Secchi E.R., Moreno I.B., Danilewicz D., Crespo E.A., Bordino P., Ramos R., Di Beneditto A.P., Bertozzi C., Bastida R., Zanelatto R., Perez J.E. and Kinas P.G. (2002) Report of the working group on fishery interactions. Latin American Journal of Aquatic Mammals (Special Issue) 1, 5564.
Pérez Macri G. and Crespo E.A. (1989) Survey of the franciscana, Pontoporia blainvillei, along the Argentine coast, with a preliminary evaluation of mortality in coastal fisheries. IUCN Occasional papers IUCN SSC 3, 5763.
Perrin W.F. and Myrick A.C. Jr (eds) (1980) Age determination of toothed whales and sirenians. Reports of the International Whaling Commission (Special Issue) 3, 229 pp.
Pinedo M.C. (1991) Development and variation of the franciscana, Pontoporia blainvillei. PhD thesis. University of California, Santa Cruz, United States of America.
Pinedo M.C. (1995) Development and variation in external morphology of the franciscana, Pontoporia blainvillei. Revista Brasileira de Biologia 55, 8596.
Pinedo M.C. and Polacheck T. (1999) Trends in franciscana (Pontoporia blainvillei) stranding rates in Rio Grande do Sul, Southern Brazil (1979–1998). Journal of Cetacean Research and Management 1, 179189.
Pinedo M.C. and Hohn A.A. (2000) Growth layer patterns in teeth from the franciscana, Pontoporia blainvillei: developing a model for precision in age estimation. Marine Mammal Science 16, 127.
Ramos R.M.A., Di Beneditto A.P.M. and Lima N.R.W. (2000) Growth parameters of Pontoporia blainvillei and Sotalia fluviatilis (Cetacea) in northern Rio de Janeiro, Brazil. Aquatic Mammals 26, 6575.
Ramos R.M.A., Di Beneditto A.P.M., Siciliano S., Santos M.C.O., Zerbini A.N., Bertozzi C., Vicente A.F.C., Zampirolli E., Alvarenga F.S. and Lima N.R.W. (2002) Morphology of the franciscana (Pontoporia blainvillei) off southeastern Brazil: sexual dimorphism, growth and geographical variation. Latin American Journal of Aquatic Mammals (Special Issue) 1, 129144.
Read A.J., Wells R.S., Hohn A.A. and Scott M.D. (1993) Patterns of growth in wild bottlenose dolphins, Tursiops truncatus. Journal of Zoology, London 231, 107123.
Read A.J. and Hohn A.A. (1995) Life in the fast lane. The life history of harbour porpoises from the Gulf of Maine. Marine Mammal Science 11, 423440.
Ricker W.E. (1975) Computation and interpretation of biological statistics of fish populations. Bulletin of the Fisheries Research Board of Canada 191, 1382.
Rosas F.C.W., Monteiro-Filho E.L.A. and Oliveira M.R. (2002) Incidental catches of franciscana (Pontoporia blainvillei) on the southern coast of São Paulo state and the coast of Paraná state, Brazil. Latin American Journal of Aquatic Mammals (Special Issue) 1, 161167.
Rosas F.C.W., Barreto A.S. and Monteiro-Filho E.L.A. (2003) Age and growth of the estuarine dolphin (Sotalia guianensis) (Cetacea, Delphinidae) on the Paraná coast, southern Brazil. Fishery Bulletin 101, 377383.
Secchi E.R., Zerbini A.N., Bassoi M., Dalla Rosa L., Moller L.M. and Rocha-Campos C.C. (1997) Mortality of franciscanas, Pontoporia blainvillei, in coastal gillnetting in southern Brazil: 1994–1995. Reports of the International Whaling Commission 47, 653658.
Secchi E.R., Wang J.Y., Murray B.W., Rocha-Campos C.C. and White B.N. (1998) Population differentiation in the franciscana (Pontoporia blainvillei) from two geographic locations in Brazil as determined from mitochondrial DNA control region sequences. Canadian Journal of Zoology 76, 16221627.
Secchi E.R., Ott P.H. and Danilewicz D.S. (2003a) Effects of fishing by-catch and conservation status of the franciscana dolphin, Pontoporia blainvillei. In Gales N., Hindell M. and Kirkwood R. (eds) Marine mammals: fisheries, tourism and management issues. Collingwood, Australia: CSIRO Publishing, pp. 174191.
Secchi E.R., Danilewicz D. and Ott P.H. (2003b) Applying the phylogeographic concept to identify franciscana dolphin stocks: implications to meet management objectives. Journal of Cetacean Research and Management 5, 6168.
Siciliano S., Di Beneditto A.P.M. and Ramos R.M.A. (2002) A toninha, Pontoporia blainvillei (Gervais & d'Orbigny, 1844) (Mammalia, Cetacea. Pontoporiidae), nos Estados do Rio de Janeiro e Espírito Santo, costa sudeste do Brasil: caracterização dos hábitats e fatores de isolamento das populações. Boletim do Museu Nacional, Zoologia 476, 115.
Slooten E. (1991) Age, growth and reproduction of Hector's dolphin. Canadian Journal of Zoology 60, 16891700.
Sokal R.R. and Roff F.J. (1981) Biometry. San Francisco, CA: W.H. Freeman and Company, 859 pp.
Stevick P.T. (1999) Age–length relationships in humpback whales: a comparison of strandings in the western north Atlantic with commercial catches. Marine Mammal Science 15, 725737.
Stolen M.K., Odell D.K. and Barros N.B. (2002) Growth of bottlenose dolphins (Tursiops truncatus) from the Indian river lagoon system, Florida, U.S.A. Marine Mammal Science 18, 348357.
von Bertalanffy L. (1938) A quantitative theory of organic growth (inquires on growth laws II). Human Biology 10, 181213.
Walter T. (1997) Curvas de crescimento aplicadas a organismos aquáticos. Um estudo de caso para toninha, Pontoporia blainvillei (Cetacea, Pontoporiidae) do extremo sul do Brasil. Bachelor's monograph. Fundação Universidade Federal do Rio Grande, Rio Grande, Brazil.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Full text views

Total number of HTML views: 2
Total number of PDF views: 9 *
Loading metrics...

Abstract views

Total abstract views: 112 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 19th November 2017. This data will be updated every 24 hours.