2008
DOI: 10.1017/s1755267206002351
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Prey-transfer in the marine tucuxi dolphin, Sotalia fluviatilis, on the Brazilian coast

Abstract: The first record of prey-transfer behaviour between adult and calf animals in Sotalia fluviatilis is recorded. Five clear episodes of prey-transfer from adult animals to calves were observed, occurring in north-eastern Brazil at Pipa's Beach. These results suggest that food-sharing is a naturally occurring behaviour in the marine tucuxi dolphin, and that it may act as both a food supply and as an opportunity to obtain information about the food that is eaten by other group members.

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Cited by 5 publications
(4 citation statements)
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“…The mean group size of S. guianensis in this study (30.2 individuals) is one of the largest observed for the species, comparable only with group sizes in Paraty Bay (Rio de Janeiro State, Brazil) (32.4 individuals) and Norte Bay (Santa Catarina State, Brazil) (29 individuals) (Lodi 2003, Daura‐Jorge et al 2005, Flores and Fontoura 2006). Most studies of S. guianensis report mean group sizes ranging from 3 to 13 dolphins (Di Beneditto et al 2001, Edwards and Schnell 2001, Azevedo et al 2005, Spinelli et al 2006). According to Araújo and Azevedo (2001), Sepetiba and Paraty bays share the same fish assemblages that form large schools and are distinct from other estuaries and bays of south and southeast Brazil.…”
Section: Discussionmentioning
confidence: 99%
“…The mean group size of S. guianensis in this study (30.2 individuals) is one of the largest observed for the species, comparable only with group sizes in Paraty Bay (Rio de Janeiro State, Brazil) (32.4 individuals) and Norte Bay (Santa Catarina State, Brazil) (29 individuals) (Lodi 2003, Daura‐Jorge et al 2005, Flores and Fontoura 2006). Most studies of S. guianensis report mean group sizes ranging from 3 to 13 dolphins (Di Beneditto et al 2001, Edwards and Schnell 2001, Azevedo et al 2005, Spinelli et al 2006). According to Araújo and Azevedo (2001), Sepetiba and Paraty bays share the same fish assemblages that form large schools and are distinct from other estuaries and bays of south and southeast Brazil.…”
Section: Discussionmentioning
confidence: 99%
“…É justo nos primeiros anos de vida que essa via de repasse geracional é protagonizada, principalmente, pela transmissão materna. A aquisição de tais habilidades pode auxiliar os golfinhos a desenvolver agilidade motora, promover o reconhecimento parental e flexibilizar a gama de comportamentos executáveis (Simões- Lopes et al, 1998;Mann & Sargeant, 2003;Sargeant et al, 2005;Spinelli et al, 2008;Serpa, 2019) que se efetivam nas complexas relações entre mãe e prole, e destes para com o ambiente, demais membros do grupo de botos e espécies relacionadas ao estuário do Tramandaí.…”
Section: A Parte: Pescadores E Botos No Estuáriounclassified
“…Documentation of food sharing has been rare in cetaceans as this behavior (and feeding in general) can be inconspicuous to boat‐based observers. Most reports are anecdotes from both captive and wild delphinids (Connor & Norris, 1982; Johnson, 1982), including in killer whales ( Orcinus orca ; Hoelzel, 1991; Wright et al, 2016), false killer whales ( Pseudorca crassidens ; Baird et al, 2008; Connor & Norris, 1982), Guiana dolphins ( Sotalia guianensis ; Spinelli, de Jesus, & do Nascimento, 2008), and common bottlenose dolphins ( Tursiops truncatus ; Fedorowicz, Beard, & Connor, 2003). Food sharing is certainly underreported, and its occurrence is probably underestimated.…”
Section: Figurementioning
confidence: 99%