On the feeding habit of the Guiana Dolphin Sotalia guianensis (van Bénedèn, 1864) (Mammalia: Cetartiodactyla: Delphinidae) in southeastern Brazil (~220S): has there been any change in more than two decades?

Main Article Content

Ana Paula Madeira Di Beneditto
http://orcid.org/0000-0002-4248-9380
Clara da Cruz Vidart Badia
http://orcid.org/0000-0002-1168-0721
Salvatore Siciliano
http://orcid.org/0000-0002-0124-8070

Abstract

Along the north and central coast of Rio de Janeiro State (22025’S–23000’S), southeastern Brazil, the Guiana Dolphin Sotalia guianensis forages on neritic prey, mainly fish.  From the analysis of the dolphin’s stomach contents and the identification of partially digested prey, it was verified that the most frequent prey species were young specimens of Trichiurus lepturus.  Comparing our results with previous studies on the feeding habits of Guiana Dolphin in the same region, we noticed the maintenance of its feeding preferences during more than two decades, indicating little or no change in the use of prey by this top predator. 

Article Details

How to Cite
[1]
Di Beneditto, A.P.M., Badia, C. da C.V. and Siciliano, S. 2017. On the feeding habit of the Guiana Dolphin Sotalia guianensis (van Bénedèn, 1864) (Mammalia: Cetartiodactyla: Delphinidae) in southeastern Brazil (~220S): has there been any change in more than two decades?. Journal of Threatened Taxa. 9, 2 (Feb. 2017), 9840–9843. DOI:https://doi.org/10.11609/jott.2745.9.2.9840-9843.
Section
Short Communications
Author Biographies

Ana Paula Madeira Di Beneditto, Universidade Estadual do Norte Fluminense Av. Alberto Lamego 2.000, 28013-602, Campos dos Goytacazes, RJ, Brazil.

Laboratório de Ciências Ambientais

 

Clara da Cruz Vidart Badia, Universidade Federal de Ouro Preto 35400-000, Ouro Preto, MG, Brazil

Laboratório de Ecologia Evolutiva de Insetos de Dossel e Sucessão Natural

Salvatore Siciliano, Instituto Oswaldo Cruz/Fiocruz Pavilhão Mourisco - sala 122, Av. Brasil 4.365, 21040-360, Rio de Janeiro, RJ, Brazil

Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos

 

References

Barreto, A.S., C.C. Rocha, F.W. Rosas, J.M. Silva Jr., L.D. Rosa, P.A.C. Flores & V.M.F. da Silva (2010). Plano de ação nacional para a conservação dos mamíferos aquáticos: pequenos cetáceos. Instituto Chico Mendes de Conservação da Biodiversidade, Brasília, Brasil, 132pp. Available at http://www.icmbio.gov.br/portal/images/stories/docs-plano-de-acao/pan-peqs-cetaceos/pan-pequenoscetaceos-web.pdf

da Silva, V.M.F. & R.C. Best (1996). Sotalia fluviatilis. Mammalian Species 527: 1–7.

Di Beneditto, A.P. & N.R.W. Lima (2003). Biometria de teleósteos da costa norte do Estado do Rio de Janeiro para estudos sobre piscivoria. Biotemas 16(1): 135–144.

Di Beneditto, A.P. & R. Ramos (2004). Biology of the marine Tucuxi Dolphin (Sotalia fluviatilis) in south-eastern Brazil. Journal of the Marine Biological Association of the United Kingdom 84(6): 1245–1250; http://doi.org/10.1017/S0025315404010744h

Di Beneditto, A.P., R.M.A. Ramos & N.R.W. Lima (2001). Os Golfinhos: Origem, Classificação, Captura Acidental, Hábito Alimentar. Editora Cinco Continentes, Porto Alegre, 148pp.

Di Beneditto, A.P.M. & S. Siciliano (2007). Stomach contents of the marine Tucuxi Dolphin (Sotalia guianensis) from Rio de Janeiro, south-eastern Brazil. Journal of the Marine Biological Association of the United Kingdom 87(1): 253–254; http://doi.org/10.1017/S0025315407053647Â

Di Beneditto, A.P., R. Ramos & N.R.W. Lima (1998). Fishing activity in Northern Rio de Janeiro State (Brazil) and its relation with small cetaceans. Brazilian Archives of Biology and Technology 41(3): 296–302.

Di Beneditto, A.P.M., C.M.M. Souza, H.A. Kehrig & C.E. Rezende (2011). Use of multiple tools to assess the feeding preference of coastal dolphins. Marine Biology 158(10): 2209–2217.

Geraci, J.R. & V.J. Lounsbury (2005). Marine Mammals Ashore: A Field Guide for Strandings. Texas A&M University, Galveston, 371pp.

Kehrig, H.A., T.G. Seixas, O. Malm, A.P.M. Di Beneditto & C.E. Rezende (2013). Mercury and selenium biomagnification in a Brazilian coastal food web using nitrogen stable isotope analysis: A case study in an area under the influence of the Paraiba do Sul River plume. Marine Pollution Bulletin 75(1–2): 283–290.

Pinkas, L., M.S. Oliphant & I.K. Iverson (1971). Food habits of albacore, bluefin tuna and bonito in Californian waters. California Fishery and Game 152: 1–105.

Rosas, F.C.W., J. Marigo, M. Laeta & M.R. Rossi-Santos (2010). Natural history of dolphins of the genus Sotalia. Latin American Journal of Aquatic Mammals 8(1–2): 57–68; http://doi.org/10.5597/lajam00154

Santos, M.C.O., S. Rosso, R.A. Santos, S.H.B. Lucato & M. Bassoi (2002). Insights on small cetacean feeding habits in southeastern Brazil. Aquatic Mammals 28(1): 38–45.

The IUCN Red List of Threatened Species (2015). Version 2015-4. Available at www.iucnredlist.org. Accessed in 21 April 2016.