I have tried to do something similar to what you are thinking of doing, but the truth is that C. Similis is imported by the thousands each year. The imported price of a baby is about $4.
A wholesaler will not pay more than $5 for a baby and $10-$20 for perfect Adults in limited quantities. I can go out and catch 20 to 30 adults per week and countless babies during the hatching period, but believe me, they are not an easy animal to take care of or sell. Adults are very aggressive and require individual care. They are not even close to the type of husbandry that a bird requires. Babies require mandatory UVB and crickets or they will die. If you find your self holding 20 to 30 adult Similis at any given time you will have a mess. The iguanas will just be suffering and may die a slow and inhumane death.
The population on Boca Grande are not C.Pectinata nor are they Hybrids. These iguanas were misidentified years. I myself went there and confirmed that they are similis by counting scales and by visual identification over 30 individuals of various sizes, sexes and from different locations within the island were observed. If they were C. Pectinata I could see where they would move much faster, but at the magnitude of what the present population is for Similis, even C. Pectinata would become a problem unloading once the market is flooded.
What can be done is to find some good contacts over seas e.g: Japan, Germany, etc. Maybe even consider shipping them back to the breeders in South America? Most of the C. Similis and Pectinatas I sell are exported.
I would not mind going out to collect on Boca Grande. I am confident that in less than one year I could put a huge dent in the population, But Boca Grande is about 300 miles away from where I live and it would be economically difficult for me unless I was to be compensated in addition to what a wholesaler would pay if the demand was not increased. And one thing to remember, You will never get rid of all of them since a lot of them are on private land and some property owners like to see them. You can only control them.
Everybody has a different view on this issue. Most people have valid points. But the truth of the matter is that there is a problem that is going to eventually be resolved one way or another and the only ones that will suffer are the Iguanas.
We do not need to be bickering amongst or disrespecting each other and getting all wound up because of an individual's view. Maybe a little brain storming amongst us interested, educated, non-educated, and soon to be educated Ctenosaura enthusiasts would be better than being divided with horse blinders..
If you can find a responsible demand I can supply. If you find a responsible demand and I cannot supply, I can train some one who can.
Manny
