
22-11-2008
giraffes in australia arent managed at a sub-species level, are they? there are critically few founders for giraffes in Australia, most are descended from an original two imported to taronga in the early 20th century.
a female rothschild giraffe imported to Melbourne Zoo in the 1990s joined rothschilds at Perth (also sourced from other regions) but offspring from this program has been subsumed into the wider hybrid herds managed by ZOOS SA, ZPB of NSW as well as smaller holders such as Mogo and the National Zoo in an effort to reduce inbreeding. Taronga's previous breeding male was also an import, but was a hybrid.
the pure Melbourne and Perth populations see some form of exchange but there is verly little breeding activity; most of the giraffe breeding in this country occurs at TWPZ or Monarto, which maintain the hybrid populations but also hold some pure rothschilds which came into the program to add genetic diversity.
the two giraffes being imported to Australia would have to represent some newish bloodline to the Australian population; as hybrids the cost of their import would otherwise not be justified. in the past New Zealand has acquired giraffe from North America and other regions who's genes can hopefully be integrated into the Aussie herd.
either way, the giraffe in Australia is not managed so much as to maintain genetic diversity; more so to prevent serious inbreeding.
fluctuations in Australia's quarantine policy towards giraffes have led to fluctuations in exactly what zoos in this country were doing with the species. logically, in spite of all the hassle of importing pure rothschilds, the region as a whole now breeds giraffes for display only and cooperatively the zoos seek to integrate as wide a gene pool as they can by breeding hybrids.
AI woul be so much easier...but I guess no where near as exciting as giraffes blocking sydney traffic
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