![]() ![]() ![]() She passed away peacefully Sunday evening surrounded by a team that had been caring for her daily over the course of ten years. ![]() Although there were signs of improvement on Saturday morning, on Sunday, some of her physiological parameters started to worsen. Since the late-night surgery took place Thursday, the marine mammal care team and other volunteers nursed her around the clock, walking with her in waist deep water, supporting her, providing familiar encouraging words and close gentle contact. “When she survived it, we had a glimmer of hope that aggressive post-operative treatment and her own strength might just pull her through. “The surgery had never been successfully completed before,” he said. The post goes on to quote the aquarium's long-time head veterinarian, Dr. "Because cetaceans live in water and are conscious breathers, surgical procedures are high-risk and extremely rare." "With her condition worsening.the team decided to perform the first-ever enterotomy (bowel surgery) on a Pacific white-sided dolphin under general anesthesia," the blog post reads. ![]() That operation was initially considered a success but Hana died shortly after on Sunday, May 24. Surgery was performed by a team of specialists the evening of May 21. Virginia Hayssen et al.One of only two dolphins the Vancouver Aquarium holds in captivity passed away over the weekend.Īccording to a blog post at the Vancouver Aquarium's website, the animal, named Hana, was recently diagnosed with gastrointestinal distension and inflammation.Don Wilson and Sue Ruff (1999), The Smithsonian Book of North American Mammals.Ronald Nowak (1999), Walker's Mammals of the World.Ernest (2003), Life history characteristics of placental non-volant mammals.Richard Weigl (2005), Longevity of Mammals in Captivity from the Living Collections of the World.(2011), Physiology of aging among healthy, older bottlenose dolphins (Tursiops truncatus): comparisons with aging humans (PubMed) (2011), Comparative biology of mammalian telomeres: hypotheses on ancestral states and the roles of telomeres in longevity determination (PubMed) (2015), Evaluation of annual survival and mortality rates and longevity of bottlenose dolphins (Tursiops truncatus) at the United States Navy Marine Mammal Program from 2004 through 2013 (PubMed) (2019), Telomere shortening rate predicts species life span (PubMed) No information on metabolism is available. Life history traits (averages) Female sexual maturity 2,831 days Male sexual maturity 3,689 days Gestation 365 days Weaning Litter size 1 (viviparous) Litters per year 0.5 Inter-litter interval 858 days Weight at birth 19,350 g Weight at weaning Adult weight 200,000 g Postnatal growth rate Metabolism Ī study comparing bottlenosed dolphins and 7 other species concluded that the rate of telomere shortening was a strong predictor of lifespan, unlike telomere length. One captive female was still alive at 51.6 years of age. 671 Sample size Medium Data quality Acceptable ObservationsĮstimates suggest that males may live up to 39 years in the wild and females up to 49 years. Species Tursiops truncatus Common name Bottlenosed dolphin Synonyms Tursiops gephyreus, Delphinus truncatus Lifespan, ageing, and relevant traits Maximum longevity 51.6 years (captivity) Source ref. AnAge entry for Tursiops truncatus Classification (HAGRID: 01955) Taxonomy Kingdom: Animalia ![]()
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