[totallytokay58]

can you incubate tokay eggs for male or female??? also is there a co.dom morph or are they all simple ressive?? thanks

[Sinosauropteryx]

Bumping this so more people will see the thread.

Although I am not sure, low 80's will yield all or mostly females and low 90's will yield all or mostly males. Mid to high 80's will give you an equal chance of males and females. Or something like that, I don't know. The basic rule for determining sex via egg incubation is that the higher the temperature, the more males you will get, and the lower the temperature, the more females you will get. If the temperatures are too high or too low, the eggs will not hatch. I actually have a book somewhere that lists the exact temperatures you are looking for but I can't find it (or, if I have it, what page the temps are on) so in the meantime just wait for someone else with more experience in this matter to reply.

And I have no clue at all about Tokay morphs so, again, someone else can pop in now...

[BlakeDeffenbaugh]

As for temps determining sex, I keep my cage between 90-100 all year round and I produce equal numbers of males to females. I dont think Tokays sex is dependent on temp, unless someone has some more info on this I have never found any proof of it.

I'm pretty sure every Tokay morph to date has been proven as simple recessive.

[T-ReXx]

No one has really done enough testing to be positive whether or not Gekko gecko is TSD(Temperature Sex Dependent) yet. In my experience lower incubation temps (low 80s) for the first 3 weeks of incubation tends to cause more females to hatch, and higher temps (86-90F) will give you mostly males. In proven TSD species like Leopard geckos and African Fat Tails temps above 90F tend to produce females that have male characteristics like aggression. It is very possible that tokays are TSD, but more research is required to decide it officially. This is the case with many gecko species that aren't commonly captive bred on a commercial scale.

As far as morphs go, all of the proven tokay morphs I know of are simple recessive. There are no proven Co-dominant morphs as of yet. But tokay morph breeding is relatively new to herptoculture, so we will see what the future brings. There are a lot of tokay morphs, and many have yet to be bred through enough generations to fine tune them.

[Riverside Reptiles]

Originally Posted by Sinosauropteryx

Bumping this so more people will see the thread.

Although I am not sure, low 80's will yield all or mostly females and low 90's will yield all or mostly males. Mid to high 80's will give you an equal chance of males and females. Or something like that, I don't know. The basic rule for determining sex via egg incubation is that the higher the temperature, the more males you will get, and the lower the temperature, the more females you will get. If the temperatures are too high or too low, the eggs will not hatch. I actually have a book somewhere that lists the exact temperatures you are looking for but I can't find it (or, if I have it, what page the temps are on) so in the meantime just wait for someone else with more experience in this matter to reply.

And I have no clue at all about Tokay morphs so, again, someone else can pop in now...

While that info holds true for leos, you have to remember that TSD does not apply to all (or even most) geckos. I'm not sure about tokays. But as Blake says, it doesn't appear to be a factor with them.

As for co-dom morphs in tokays, I don't know of any that have proven to be such. But there's still a lot of morphs that haven't been proven at all. So time will tell.

[Ophidiophile]

There appears to be a blue headed green morph that is claimed by some to be codom. A breeder in the UK as well as Morgan, who is a contributor on this site have both bred blue-headed greens to powder blues and if I'm not mistaken have produced all blue headed greens from those pairings. The UK breeder also bred the same blue headed green to a calico and again produced blue headed greens. It is possible that the calicos were het for blue headed green and that powder blues are just a variant of blue headed green in which case the trait could be simple recessive and still produced the results seen. But evidence is pointing to the blue headed green trait possibly being a co-dom. Hopefully we'll find out for sure with more captive breeding...

[holocaustto]

I love this kind of threads. I hope you continue discussing about morphs and TSD in Tokays, since there's isn't many info about it on the net.

[BlakeDeffenbaugh]

I'd like to breed that blue headed green morph to a few other types of morphs. It could potentially show that some morphs are related genetically in one way or another. Kind of like Ball pythons where you can breed several different morphs together and still come out with the same thing IE blue eyed lucys, ivorys, black eyed lucys and a few others. It would be a very interesting study.

As for personal experience with TSD in Tokays. I've had eggs vary in temp from the low 80s (where the eggs take upwards of 200 days to hatch out young) there seems to be a good mixture of males to females. Then have had eggs cooking in the mid to high 90s that hatch right at the 90-100 day marks consistently (thats where I prefer it because I know when shes either laying or about to lay I have eggs about to hatch any day or vice/versa) and I get a ready mix of male to female. Like T-Rex mentioned, in Leo's and other species you seem to get very aggressive females that do not want to breed or do anything but fight with a cage mate when produced in higher temps, I have yet to see this in Tokays. In their natural ranges they can either be in a moderately cool climate all the way up into hot climates, so I dont think temp will determine sex as readily as other species because they are naturally from different ranges. I could be way off in this and if any research has been done to prove one way or another I'd love to see it. I am also considering trying a few experiments myself to see what way it would go. I'm also interested in research on how long it takes these animals to become sexually mature.

[thehotchik1000]

Hello everyone,

As with Blake Ive been playing with the tsd myself. Though as a few have said before. There needs to be much more research done. In the bit of messing around Ive done I have seen this. The lower the temp. is the longer it takes to hatch. So far in doing this Ive have seen these juveniles are larger, start eating faster, are more independent, and sexually mature faster. I have also gotten almost equal amount of sexes from a lower temp rate. Now for the ones I incubated at the highest temp range at about 98.F Ive seen that they are smaller at hatch, and almost the compleate opposite of the lower temp range hatchlings. Also has anyone noticed that the ones incubated at higher temps seem to be darker in colors? This could just be a coincidence but a few of my lower temps are extreamly light even when they darken. And the higher temps are really dark. Like I said Im still playing around. Even at higher temps though I still get a really good range of females to male. Im going to try the darker and lighter thing more with my lucy x powder blue and see what I can come up with. Good Thread Bump! Have a good one!
Morgan

[holocaustto]

Where do your Geckos lay their eggs so you can incubate them separately?