Australasian Gibbon Population

Jambo said:
However it would be promising if Dubbo imported a male from overseas and ended up breeding. I don't believe they've ever welcomed Saimang babies (although I could be wrong).
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Osedax said:
The old pair did breed; I saw their son in 2017.
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Dubbo’s pair bred at least twice:

0.1 Sampit (1997) - sent to Melbourne Zoo
1.0 Lima (2012) - sent to Hamilton Zoo

Lima is now at Hamilton Zoo. His mate is a granddaughter of Itam and Iuri, so it’d be interesting to know if Iuri (born 1979 at Adelaide Zoo) is related to either of Dubbo’s old pair (Lima’s parents) - Saudara (born 1988 at Adelaide Zoo) or Puteri (born 1986 at Adelaide Zoo). Adelaide has multiple pairs at one stage.
 
Zoofan15 said:
Dubbo’s pair bred at least twice:

0.1 Sampit (1997) - sent to Melbourne Zoo
1.0 Lima (2012) - sent to Hamilton Zoo

Lima is now at Hamilton Zoo. His mate is a granddaughter of Itam and Iuri, so it’d be interesting to know if Iuri (born 1979 at Adelaide Zoo) is related to either of Dubbo’s old pair (Lima’s parents) - Saudara (born 1988 at Adelaide Zoo) or Puteri (born 1986 at Adelaide Zoo). Adelaide has multiple pairs at one stage.
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I don't know, although I would assume that Saudara and Puteri were unrelated to each other, making it more likely that one of them is related to Iuri. I'm also curious as to whether the current males at Adelaide are related to Iuri, Saudara and/or Puteri. They've been a father/son pair for a while, which is unusual.
 
Abbey said:
I don't know, although I would assume that Saudara and Puteri were unrelated to each other, making it more likely that one of them is related to Iuri. I'm also curious as to whether the current males at Adelaide are related to Iuri, Saudara and/or Puteri. They've been a father/son pair for a while, which is unusual.
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Adelaide Zoo imported 1.1 Siamang from Singapore Zoo in 1976 (with the female dying four months later). Adelaide Zoo then imported 3.3 Siamang from Jakarta Zoo in 1978.

One of the females imported from Jakarta Zoo would be the mother of Iuri and I agree it’s likely that Dubbo’s pair (Saudara and Puteri) had different parents.

It’s a possibility that Willowbank’s now deceased male (born 1976 in the wild) was one of these imports. Adelaide Zoo didn’t need four pairs, so assuming all of the 4.3 above survived for any length of time, there may have been a surplus male.
 
Zoofan15 said:
Adelaide Zoo imported 1.1 Siamang from Singapore Zoo in 1976 (with the female dying four months later). Adelaide Zoo then imported 3.3 Siamang from Jakarta Zoo in 1978.

One of the females imported from Jakarta Zoo would be the mother of Iuri and I agree it’s likely that Dubbo’s pair (Saudara and Puteri) had different parents.

It’s a possibility that Willowbank’s now deceased male (born 1976 in the wild) was one of these imports. Adelaide Zoo didn’t need four pairs, so assuming all of the 4.3 above survived for any length of time, there may have been a surplus male.
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When did Bujang die?
 
Abbey said:
When did Bujang die?
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My apologies @Abbey, it appears Bujang is alive and well. I must have been thinking of his son Ketut, who died circa 2022.

1.0 Bujang (1976) Wild x Wild
0.1 Sue (1991) Itam x Iuri

Offspring:

1.0 Intan (2007) - sent to Auckland Zoo
1.0 Ketut (2016) - deceased
1.0 Kaysem (2019) - still at Willowbank
0.1 Mali (2023) - still at Willowbank

Intan is in a non-breeding pair, so it wouldn’t be surprising to see Kaysem go into a breeding situation. He’s at a good age to form a pair and could even be Dubbo’s new male if the inbreeding coefficient is deemed acceptable. Kaysem and Kasarna are both born 2019, so age wise are an ideal match!
 
How Kaysem and Kasarna are related:

Kaysem:

Itam (1984) and Iuri (1979) had Sue (1991)

Sue (1991) had Kaysem (2019)

Kasarna:

Itam (1984) and Iuri (1979) had Peggy (1989)

Peggy (1989) had Cian (2010)

Cian (2010) had Kasarna (2019)

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Since the pairing of Intan and Kera at Auckland failed to yield offspring, I wouldn’t be surprised if Intan’s sister was eventually paired with one of Kera’s brothers.
 
Zoofan15 said:
Intan is in a non-breeding pair, so it wouldn’t be surprising to see Kaysem go into a breeding situation. He’s at a good age to form a pair and could even be Dubbo’s new male if the inbreeding coefficient is deemed acceptable. Kaysem and Kasarna are both born 2019, so age wise are an ideal match!
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If Kaysem's father is genetically different to Cian's. Then Kasarna is genetically different again. There is not actually that much to worry about with inbreeding. Wild pairings can and do have much more closer relatedness. While Peggy and Sue are full sisters, there can be a very large or very small degree of actual shared genes. Even if we assume they share a similar percentage, 3 new sets of genes, if of no relation will have of set this enough to not worry about it.
 
White Cheeked Gibbon infant at Perth Zoo has passed away during birth

Email from Perth Zoo:
We have some news that might be distressing to read. As many of you know, our White-cheeked Gibbon, Jermei, went into labour over the weekend. As a result, the gibbon family weren’t able to join us for the exclusive member morning. We had hoped to celebrate their new home with you, but nature had other plans.

Unfortunately, we have very sad news to share. Despite every effort from our expert team, the baby did not survive

It’s a heartbreaking end to Jermei’s pregnancy and certainly not the news we hoped we’d be sharing while opening the exciting new Gibbon Crossing habitat.

Over her 22 years, Jermei has had successful pregnancies, her youngest six-year-old daughter, Lulani, still lives with her. But Jermei has also experienced some reproductive hardships, including stillbirths. After a stillbirth last year, our animal care team had been closely monitoring this pregnancy and labour.

During her labour, Jermei was monitored 24/7. The team poured endless effort, love and expertise into her care, and signs were initially looking good. But as more time passed, it became clear that nature wasn’t taking its course.

Gynaecological experts who normally assist with human pregnancies helped perform a caesarean to give the baby the very best chance at surviving.

The baby was delivered and had a faint heartbeat, but despite best efforts, the little one didn’t make it.

Working with animals means we get to experience very rewarding highs, but also difficult lows – often all at once. Our teams gave absolutely everything they could across a number of sleepless nights, and we’re so proud of them. Right now, their focus is on helping Jermei recover and supporting the family group through this loss.

There may be times where our gibbons are tucked away in their nightquarters on your next visit, and we hope you understand.

We’re very sorry to have to share this news with you, and we’re grateful for your kindness and unwavering support
 
As reported in the news thread, 1.0 Nakai the Northern White-cheeked Gibbon at Rockhampton Zoo will be transferred to a new zoo to be paired with a female. This will leave the zoo without the species but will allow this lone male to have an improved welfare outcome. Note this will see the end of the only current gibbon/otter mixed exhibit in the region.
 
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