@WIllard, which zoo???
Anyway, the option is either castration or euthanizia, the latter being a gigantic debate in gorillaworld. There are just way to many gorilla males to place, so this is a safe option. I suppose it won't belong before many gorilla's get anti-conception...
I put the zoo name in the title of the posting.
Could you please say a little more about the debate on euthanasia? I mean is it
really considered an option?
Anyway, there are more options than just the two you mentioned (or three, if I include contraception/birth control). - (1) Selective birth control, i.e. aborting only male fetuses, as considered in Australia. (2) Keeping solitary males. (3) Bachelor groups. Some of them work, others don't. It probably depends on the individuals' personality. Warsaw for instance keeps two unrelated adult males, and they get along well together, play a lot, no fightings.
Personally I'm in favour of general birth control
and bachelor groups. There are too many babies now in Europe. And as probably any farmer would say (provided he can't sell them), you can only have as much offspring from your livestock as you are able to house. So if Europe doesn't have enough space for bachelor groups, less babies should be the EEP's option of choice and that means birth control.
By the way, this topic (Bembosi's castration, and castration in general) has been discussed very intensely, controversially and also emotionally on Facebook today. And I'm surprised that not more people took up on it here on ZooChat.