In our recent Note, “Sexual coercion and aggression towards a newborn calf of marine tucuxi dolphins (Sotalia guianensis),”Marine Mammal Science 25(2):450–454, we inadvertently omitted acknowledgment of material from a poster presentation and a conversation with a colleague. Thus, on page 451, the following sentence, “The aggressive behavior towards the female included charging, downward-pointed head and flukes, and flip rams.” should be replaced by “The aggressive behavior towards the female included charging, downward-pointed head and flukes, and flip rams—a ram with enough force that a conspecific is flipped onto its side, as defined by Kaplan, Lentell and Lange.1

Also, on page 453, at the beginning of the second paragraph, the first three sentences should be replaced by the following sentences: “As was described by Kaplan, Lentell and Lange for bottlenose dolphins, the repeated aggression by adult tucuxi toward the newborn calf was likely to produce injuries that were fatal. This was especially supported by the observation of the mother being seen a few days later without the newborn and the fact that the offspring survived due to its early age.”

Mariana Freitas Nery, Instituto de Ecología y Evolución, Casilla 567, Universidad Austral de Chile, Valdívia, Chile, e-mail:; Sheila Marino Simão, Laboratório de Ecologia e Bioacústica de Cetáceos, Departamento de Ciências Ambientais, Instituto de Florestas, Universidade Federal Rural do Rio de Janeiro, BR 465, km 7, Campus Universitário, 23890-000, Seropédica, Rio de Janeiro, Brazil.

  • 1

    Personal communication from J. Daisy Kaplan, Betty J. Lentell, and William N. Lange, The Advanced Imaging and Visualization Laboratory, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, based on a poster entitled “Possible evidence for infanticide among bottlenose dolphins (Tursiops truncatus) off St. Augustine, Florida,” presented at the 17th Biennial Conference on the Biology of Marine Mammals, Cape Town, South Africa, 2007. The material from this poster presentation is now published in the same issue of Marine Mammal Science as this corrigendum, Volume 25(4):970–975.