unknown
male Pacific walrus (O. r. divergens)
wild caught in 1992
deceased ≥ 1994
Ancestors and Descendants
No known related animals.
Transfer History
capture 1992 in Russia
transfer 1992-Nov to Dolfinarium Harderwijk
death ≥ 1994 at Dolfinarium Harderwijk
Physical Data
The dates listed here generally represent the time at which the measurements were published, not necessarily the date on which they were taken.
Weight
1993-Feb: 116 kg · 255 lb
1993-Mar: 125 kg · 275 lb
1993-May: 188 kg · 414 lb
1993-Aug: 182 kg · 401 lb
1994: 323 kg · 712 lb
Length
1994: 224 cm · 7 ft 4 in
Diet
"The animals were fed on formula 3 times a day (at 09.30, 12.30 and 15.45 hours). The formula consisted of the following ingredients: 13 l water, 270 g butter, 540 g oatmeal, 630 g soya flour (Nutrilonsoja®), 900 g milk powder (Multimilk®), and 8 g marine mammal vitamins (Seavit®). The formula was stirred and boiled, then cooled to below 37°C."
1993: 12,000 ml per day
Image Gallery
No images available at this time.
Identifiers
Local
OrZH010 (Dolfinarium Harderwijk)
Notes and Information
This walrus was estimated to have been born in May or June of 1992, and died at some point during or after 1994 from a tooth infection.
He had been diagnosed with Addison's disease, which reduced his growth hormone production.
References
1996. R.A. Kastelein et al. Drinking speed of Pacific walrus (Odobenus rosmarus divergens) pups. Retrieved from Aquatic Mammals Journal.
2000-Jan. R. A. Kastelein et al. Food consumption and body weight of captive Pacific walruses (Odobenus rosmarus divergens). Retrieved from researchgate.net [archive]
2007-May. R. A. Kastelein et al. Feeding enrichment methods for Pacific walrus calves. Retrieved from researchgate.net.
2007-Dec. R. A. Kastelein et el. Food consumption, growth and food passage times in Pacific Walrus. Retrieved from researchgate.net.