Chester Zoo Chester Zoo News 2024

bongorob

bongorob

Well-Known Member
15+ year member
Imbabura Tree Frogs (Boana picturata) now on show with the Golden Poison Frogs.

Malayan Peacock Pheasants (Polyplectron malacense) on show in the middle aviary in Dragons in Danger.

Rosy Loaches on show in Monsoon Forest. This species has several scientifc names, I do not know which is the valid one.

The Lazy River Boat Ride is closed for maintenance.
 
BjoernN said:
Is Alice a pure bred Western chimpanzee or a generic hybrid chimp?
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bongorob said:
I would say pure Western. There is no point in breeding hybrids.
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Kifaru Bwana said:
The ISB 2014 listed her as a hybrid (her mother Florin b. Colwyn Bay was classed as the hybrid). It would be interesting to find out what has changed ...
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bongorob said:
Maybe the baby is a hybrid then.
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Most of Chester's chimps are hybrids. Only a few of the older individuals (like Boris) are purebred.
 
The 2014 studbook is seriously out of date when it comes to subspecies, many more pure W-African animals have been identified since, as new methods became available to determine the origin of animals. In the early days that was only possible genetically via the matriline, so if the origin of the father wasn't specifically known, they were put down as hybrids.

ZIMS lists only 1.5 non-subspecific chimps in Chester and 6.8 W-Africans, so bar any accidents it seems likely that this is pure W-African birth.
 
lintworm said:
The 2014 studbook is seriously out of date when it comes to subspecies, many more pure W-African animals have been identified since, as new methods became available to determine the origin of animals. In the early days that was only possible genetically via the matriline, so if the origin of the father wasn't specifically known, they were put down as hybrids.

ZIMS lists only 1.5 non-subspecific chimps in Chester and 6.8 W-Africans, so bar any accidents it seems likely that this is pure W-African birth.
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@lintworm, thanks for your comments. I know great strides have been made in recent years to look at individual paternity through the historical records and with new DNA/mtDNA evidence. Without a good reference source like a revised studbook that is publicly available there is no way knowing what on Earth is happening with previously deemed hybrid or non-subspecific chimpanzees at individual zoos participating in the Chimpanzee EEP/EAZA.

It might be worthwhile to get an overview per subspecies and part of the population that remains undetermined as subspecific unknowns (that includes hybrids). I take it you do have access to ZIMS ... (lucky you)!
 
Kifaru Bwana said:
@lintworm, thanks for your comments. I know great strides have been made in recent years to look at individual paternity through the historical records and with new DNA/mtDNA evidence. Without a good reference source like a revised studbook that is publicly available there is no way knowing what on Earth is happening with previously deemed hybrid or non-subspecific chimpanzees at individual zoos participating in the Chimpanzee EEP/EAZA.

It might be worthwhile to get an overview per subspecies and part of the population that remains undetermined as subspecific unknowns (that includes hybrids). I take it you do have access to ZIMS ... (lucky you)!
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Anyone can request data from ZIMS, so you can request it yourself via the form on their website. I am not going to copy all of the information I got on a public forum...
 
lintworm said:
Anyone can request data from ZIMS, so you can request it yourself via the form on their website. I am not going to copy all of the information I got on a public forum...
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I meant - for all good purposes - one of our forumsters that do from time to time give an update on the population with numbers per collection.

NOTA BENE: @lintworm, for all intense purposes ... I was never going to suggest you had to nor did it ever crossed my mind to request that off you.
 
lintworm said:
The 2014 studbook is seriously out of date when it comes to subspecies, many more pure W-African animals have been identified since, as new methods became available to determine the origin of animals. In the early days that was only possible genetically via the matriline, so if the origin of the father wasn't specifically known, they were put down as hybrids.

ZIMS lists only 1.5 non-subspecific chimps in Chester and 6.8 W-Africans, so bar any accidents it seems likely that this is pure W-African birth.
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If I remember correctly Chester spent a lot of time doing this with their chimps before they resumed breeding in 2018, so one would think that all offspring since are to pure verus parents. This is Alice’s second baby in this time - having also had one in 2019 - so chances of any accident seem slim!
 
Indlovu said:
If I remember correctly Chester spent a lot of time doing this with their chimps before they resumed breeding in 2018, so one would think that all offspring since are to pure verus parents. This is Alice’s second baby in this time - having also had one in 2019 - so chances of any accident seem slim!
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I very much doubt she is pure-bred....(show me proof and concrete veriication).
 
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