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Sexing neonate rosies

Tony D Oct 20, 2006 08:32 AM

Any help here appreciated

I just finished probing a litter of six SF rosies. At 46 years old I can't see quite well enough up close to count the small scutes but guess that each probed around ten scales deep.
My female is in shed phase and I didn't want to disturb her so my questions are:

What are the probe depths for Mid-Baja rosies?

Are there any other characteristics, tail length width and spur size you look for? These characteristics are nearly identical in my proven pair but I don't want to make a judgment on two animals

And last, as I'm thinking these are all males, is their any evidence that environmental factors like temps affect the sex of offspring?

Thanks in advance for any insights.

Replies (3)

AncientDNA Oct 20, 2006 10:05 AM

Rosies, and mid-bajas in particular, can be differentiated without probing. Females, in all instances I have seen(and I've bred well over 100 baja rosies) will NOT possess spurs and males will. They are hard to see in neos tho.
In other types(coastals for instance) I have seen females with diminutive spurs, but mostly they will not have any.
As for the sex ratio, that's the way it goes sometimes. One female gave me 4.4 this year, while the other felipe female dropped 6.2. My Joshua tree dropped 5.0 and my hypo Borrego 3.3
Given enough breedings you should see a pretty even split.
For some good photos of spurs, etc. go to:
http://www.localityrosys.com/husbandry_propogation.php
and/or
http://www.rosyboas.com/index.php?c=natural
-----
Thanks,
-JC
rosyboas.to

1.1 San felipe (CB'93)
0.1 ghost San felipe (CB'98)
1.0 ghost San felipe (CB'03)
0.1 het ghost San felipe (CB'04)
1.0 ghost-line San felipe (CB'98)
1.1 hypo Borrego (CB'99)
1.1 albino Whitewater (CB'02)
1.1 double het for snow (CB'95)
1.0 snow rosy (CB'04)
1.1 Joshua Tree (CB'96)
1.0 Bagdad (CB'99)
1.1 Harquahala Mts. (CB'04)
1.1 Temecula albino (CB'02)
0.1 Temecula albino (CB'05)
1.1 Hemet anery (CB'05)
0.1 Boa constrictor (CB'92)

StevePerry Oct 20, 2006 10:12 AM

Most can be sexed just looking for the spurs of the male. With neonates they will be small and the color may hide them. At your age you may need a magnifieing glass.lol just kidding.
I don't know how many scales exactly but it is obvious after you,ve probed a femal, the probe will seemingly dissapear on the male. I would have to guess they are males. I would also say that a female neonate will probe somewhere around 3/16" - vrs around 1/2" on some males. Just what I've noticed.
-----
Steve Perry
North Idaho.

Tony D Oct 20, 2006 10:52 AM

After a closer look at the adults I'd say the spur is tiny in the male and inperceptable in the female. Looking at the neonates again with this in mind AND using my kids magnefying glass two look to be definate male one definate female. The remaining three I honestly can't tell. I'll have to get a second pair of hands involved so I can get a better determination from probing.

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