patrick said:
why can't singapore have gorillas?
Here goes the story...
In the 1980s, we brought in 4 male gorillas from Europe and exhibited them in a lush outdoor habitat. But within a year, all 4 gorillas succumbed to a mysterious illness and died one by one.
A post mortem was done and it was discovered that a rare soil disease - melioidosis - was the cause. Melioidosis is a disease caused by the bacteria known as Burkholderia pseudomallei. The bacteria are found below the soil surface during the dry season. After heavy rainfall, the bacteria can be found in surface water and mud. Transmission of the disease occurs most commonly during direct contact with soil or surface waters contaminated with Burkholderia pseudomallei. This disease is also fatal to humans with a fatality rate of about 25%. To date there is no known cure or vaccine for the disease. Victims of the disease are given antibiotic treatment and relapse rate is high.
In 1990, we loaned another pair of male gorillas from the Netherlands, but this time they were housed indoors in a concrete-floored enclosure, with no direct contact to soil. Unfortunately, one of them died from the same disease a few months after later. It was suspected that the disease bacteria was carried into the indoor habitat along with fine soil particles that were blown into the enclosure via a mesh ventilation window.
The other male was immediately put on antibiotic treatment while preparations were made for his repatriation back to netherlands. Within a month from the death of his companion, the other male was sent back home, thankfully he survived.
We drew a lot of international flak from this saga, gorillas being an endangered species afterall, and 5 died while in our care. Wild gorillas would naturally have immunity to the disease, but all gorillas in captivity today are mostly descended from European stock, where years of captive breeding in temperate regions have caused the zoo gorillas to lose their immunity.
It was a painful lesson which we learned the hard way.