Comparative survivability of Tursiops neonates from three US institutions for the decades 1990–1999 and 2000–2009

  • Published source details Sweeney J.C., Stone R., Campbell M., McBain J., St Leger J., Xitco M., Jensen E. & Ridgway S. (2010) Comparative survivability of Tursiops neonates from three US institutions for the decades 1990–1999 and 2000–2009. Aquatic Mammals, 36, 248-261.


This study is summarised as evidence for the following.

Action Category

Breed marine and freshwater mammals in captivity

Action Link
Marine and Freshwater Mammal Conservation
  1. Breed marine and freshwater mammals in captivity

    A review of case studies in 1990–2009 at three captive facilities in the USA (Sweeney et al. 2010) reported that most common bottlenose dolphins Tursiops truncatus born in captivity survived for at least one year, and survival increased with improved husbandry techniques. Results are not based on assessments of statistical significance. A total of 249 common bottlenose dolphins were born in captivity over 20 years. Of those, 201 calves (80%) survived to at least one year of age. Calf survival within 30 days of birth was higher during the second decade of the study with improved husbandry techniques (126 of 139 calves; 91%) than during the first decade of the study (86 of 110; 78%). Data on live-births and survival of common bottlenose dolphin calves in captivity were collected from three public display/research facilities for 10 years before (1990–1999) and 10 years after (2000–2009) improvements to husbandry techniques. This included standardized monitoring of mothers and calves and interventions (medical treatments, nutritional supplements etc.; see original paper for details).

    (Summarised by: Anna Berthinussen)

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