| Summary: | 碩士 === 國立中山大學 === 海洋生物研究所 === 95 === The apple snail, Pomacea canaliculata has made a tremendous threat to agricultural crops as well as environmental ecology in Taiwan. Although various control methods are available, there are certain limitations in each of the applications. The present study was conducted to evaluate the application potential of food preference in attractant usage to apple snails. It has been found that apple snails actively searched animal materials. Fish blood and egg glair were as attractive as banana (Musa sp.). With equal weight, blood clots from cobia (Rachycentron canadum) and pig (Sus sp.) were more attractive than banana, and cooked pig blood was as attractive as banana. The response of snails to concentrated extracts from fish blood (with molecular weight > 5000) was stronger than banana. There were no significant differences in snails’ responses to blood from pig, cobia, freshwater and seawater milk fish (Chanos chanos). Furthermore, protein was probably the attractive source to apple snails and frozen-treated blood increased attractive response. As expected, blood clots from cobia and pig were more attractive than banana in the field. In summary, the results show that animal protein is potentially applicable as attractive components for apple snails.
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