In recent years the prevalence of tuskless females has fallen, to around 33%.

近年来，无牙母象的流行率已经下降到33%左右。

His interest was piqued by a film about the tuskless female elephants of Gorongosa National Park, in Mozambique.

引起他兴趣的是一部关于莫桑比克戈龙戈萨国家公园里无象牙母象的电影。

There are occasional rumours, he says, of tuskless male elephants in the wild, but-so far at least-no firm evidence.

他说，偶尔会有传言说野外有无牙公象，但至少到目前为止还没有确凿的证据。

But after the Mozambican Civil War, one-half of the surviving females, completely tuskless.

但莫桑比克内战后，幸存的雌性有一半完全没有獠牙。