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Old 05-31-2016, 11:37 AM   #1
GitaBooks
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Default Health and genetics

I'm studying animal genetics and their relation to health in domestic mammals. I have a pretty good list so far of genes that can lead to health issues in hamsters, but I was hoping for some help with it. Please feel free to correct any mistakes I might have made also.

Thanks : )

SYRIAN HAMSTERS
Red-eyed: Red-eyed mammals (albinos) have been shown to suffer from seeing problems, sensitivity to light, and possibly a lowered immune system. Colors that include red eyes are: Champagne, Dark Eared White, Red-eyed Cream, Red-eyed Ivory, Rust, Silver Blond, and Red-eyed Silver Grey.
...
Beige: Small and less robust with a risk of kinking in the tail
Dark Grey: May be linked with a kinked tail
Dominant Spot: Pre-natal lethal in homozygous
Hairless: Female cannot produce milk, the life-span is around half that of a haired hamster, increased risk of weight-loss, hypothermia, and skin injuries.
Light Grey/Lethal Grey: Pre-natal lethal in homozygous
Lilac: May have kinked tail from being related to Dark Grey
Long Haired: Seem prone to Wet-tail
Mottled White: lethal, thought to have gone extinct because of poor health and poor mothering skills.
Piebald: deformities may affect these hamsters
Rex: Homozygous may have overly-curly whiskers and fur, causing disorientation and irritated eyes
Roan/White-bellied (Wh): Homozygous pups are born anopthalmic (without eyes) and generally have a decreased lifespan, some not making it past weaning.
Satin: Homozygous can cause thin, greasy fur



CHINESE HAMSTERS
Dominant Spot: Lethal in homozygous


ROBOROFSKI HAMSTERS
Dominant White Face: Possibly lethal
Red-eyed/Rust: red eyes


CAMPBELL DWARF HAMSTERS
Albino: red eyes. Also seen in Argente, Beige, Blue Beige, Blue Fawn, Champagne, Dark Beige, Red-eyed Lilac, Dove, Umbrous, and Red-eyed White
.....
Anophthalmic Whites/Red-eyed Mottled: lethal, leading to eyeless, toothless babies that die with-in their first few weeks of life
Black-eyed White: related to platinum
Dark Grey: Extremely prone to diabetes
Mottled (Mi): Lethal in homozygous. Different then Mo, which is Black-eyed Mottling.
Platinum (Si): homozygous lethal unless combied with dilute genes. Known as microphthalmas because of their small eyes

HYBRIDS
Hybrids between different species can cause missing limbs, head tilts, and other neurological problems


SIBERIAN DWARF HAMSTERS
Imperial/White Bellied: Lethal in Homozygous
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Old 05-31-2016, 08:45 PM   #2
Nancy's Hamsters
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Default Re: Health and genetics

Rust Syrians are not red eyed they have brown eyes, but the main color I see missing with red eyes is Cinnamon, also there is Mink, Copper,and Flesh eared White. Also there is no documentation of the Albino gene in the Syrian hamster so there is no Albino gene for the red eyes.

I have not heard red eyed Syrians have a lower immune system before now, but that could be something seen in lines where your located.
I have never heard of a mottled white as a color/pattern in Syrians. Can you give more literature on this gene? It is believed the Piebald gene is extinct, and has not been found in many years.
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Old 05-31-2016, 11:13 PM   #3
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Default Re: Health and genetics

There is no albino gene. The red eyed white we have in Syrians is actually more like himilayan (dark eared white) Have a look at the National Hamster Council for info specific to UK genetics. Equally I not heard of mottled in Syrians.

There are a number of troubling concerns with your post. Namely that Chinese dom spot is not lethal, and rex in Syrians is recessive so if you have homozygous you have rex if you don't you ...dont. I think its misleading to describe it that way. Rex is alleged to have overly curly related issues but that's more to do with selection I think rather than the gene itself.

The only potential issue I've come across in Chinese is that black eyed white x black eyed white might be lethal but that's as yet untested in this country to my knowledge.

Long hairs and short hairs both are prone to wet tail if you take into account the source for your babies being the same.

There is no evidence that I'm aware of regarding Syrian red eye and immunity or even sensitivity to light. They all behave the same on a judging grid, black eyed or red.

I wonder if you meant cinnamon in Syrians rather than rust as that's what you have called red eyed robos.
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Old 06-01-2016, 06:24 AM   #4
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Default Re: Health and genetics

Thank you so much for the help, that is a lot of good information. I'm just now starting to get into the real genetics behind rodents, so there are some mistakes. Not to mention all the mixed information from older websites versus new. : )
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Old 06-01-2016, 11:18 AM   #5
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Default Re: Health and genetics

Yup, plenty of contradictions to be found
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