In livestock species that have had their reproduction studied in depth for decades it has for sure been shown that inbreeding can cause decreased fertility. Would be kind of nice to know that it isn't all our faults as captive keepers as to why we have such a difficult time getting eggs from them. I sure hope we can make some headway on them sometime soon. Such a cool species!!! I have some ideas for some further work, but will have to see how things shake out to see if I will get a stab at them or not.
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Ben
www.australianaddiction.com