gibbon : On

GAIN ID numberGAIN ID number
We assinged GAIN original IDs based on the domestic studbook numbers.:0014    （2023-11-07Updated）
International studbook number: -

Name On
Sex Male
Species or Subspecies Hylobates lar
Date of birth 1958?
Place of birth unknown
Current facility Kushiro City Zoo
Father  
Mother  
Feature
The individual is covered with black hair. He likes to nap on the floor on warm days with its arms and legs outstretched. He gets along with Miku . He likes steamed sweet potatoes and sometimes leaves vegetables, pineapples, dried sardines, melons, or watermelons.
He had no name at first but has since been called On (implying male), which then became his name.
As of March 2011, he had been raised for fifty-two years in the country, and thus, he is presumably fifty-two years or older, which is the oldest white-handed gibbon on record in the country (for reference, the world record for the oldest white-handed gibbon is Samantha at the San Antonio Zoo, and presumably died at age 56 in 2008. The world record for the oldest Muller's bornean gibbon is Nippy, which presumably died at age 60 in 2008).
The duet of On and Miku, Sound file, was recorded on August 23, 2011.
Character
The individual is basically temperate. In fact, he has been temperate for the past twenty years, during which time keepers have taken care of him. He was dominant, at least over {0150}, with whom he had lived in the past. He often made concessions for Miku.
He frequently groomed Miku . Although he used to maintain its distance from humans, he tends to get close to humans now without fear.
Life history
1958? On is born
1959.03.16 moved to Inokashira Park Zoo, Tokyo
1988.10.11 moved to Kushiro city zooeith Tena {0150} ,  {9892} , and  {9893} 
1991.04.21  {9893} died.
1991.05.09  {9892}  died.
1992.11.25 Tena  {0150}  was sent to Hirakawa zoo. On lives with Miku as a pair.
2007.09.22 On received an award from the Japan Animal Protection Association as a meritorious animal.
2019.11.18 Miku  {0015}  died.
2020.05.21 Maria  {0314}  was moved to Kushiro-city zoo from Ooji zoo, Kobe.
On and Maria are living together as a pair.
2023.11.02 On died from subarachnoid hemorrhage.
Photographs
           
*By clicking an image, you can pop-up the original image.
Research results using samples from this individual
 
References
  1. Weigl, R. (2005). Logevity of mammals in captivity; From the living collection of the world. p68.E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart.

Selection of Apes