原帖由 AndrewL 於 2012-5-5 17:03 發表
I presume we have no predators that feed on them in HK? Tilapia nilotica 金山鰂 should feast on them as Tilapia nilotica loves snails in general...........

http://www.applesnail.net/

In the 1980's, the genus Pomacea (like Pomacea canaliculata) was introduced in Taiwan to start an escargot industry. Such food culture can provided protein for the local population, especially useful for the farmers, who primary live on a rice diet, low in proteins. However, the snails didn't become a culinary success. It also became quickly clear that the imported species were able to transfer the Angiostrongylus cantonensis (rat lungworm) parasite just like the native apple snail population (Pila). This parasite spends a part of its life cycle in apple snails and can infect humans when the snail isn't cooked long enough before consumption.  Instead of becoming a food source they escaped, and became a serious pest, posing a real threat to the rice production and the environment. During the 1980's the introduced snails rapidly spread to Indonesia, Thailand, Cambodia, Hong Kong, southern China, Japan and the Philippines and there are indications that they are currently invading Australia. Nevertheless, apple snails are considered a delicacy in several regions and they are often sold in Oriental markets for consumption. In 1989 Pomacea canaliculata was introduced in Hawaii to serve as a food source and aquarium pet. Some snails escaped to the wild and turned into a serious pest in the taro and rice fields. Although a few restaurants serve them, the apple snail didn't become a great gastronomic success here either.
Recent research reveals the catastrophic nature of the Pomacea invasion in new habitats: the snail herbivory drastically alters the state and function of invaded natural wetlands. When the plants are consumed, nutrients in the system are shunted to phytoplankton instead of the plants which creates dense algal blooms (Carlsson et al in press. 2004).

原帖由 Rex 於 2012-5-9 16:20 發表
點解無人諗過廢物利用, 又可以用經濟既誘因促使啲人自動走去捉呢啲螺,

search一下, 發現台灣同埋內地都有人咁做:

大陸: 煮熟, 然後用來養水魚
http://www.zgjymh.net/news/7669096.html

扑碎咗用來餵鴨
http://we ...