農業部水產試驗所全球資訊網

「鱟」有「活化石」之稱，在演化研究、醫學應用及潮間帶健全指標上，都相當重要。一、二十年前曾廣泛分布於台灣西部沿海，近年來由於人類對沿海及潮間帶嚴重的污染與破壞，鱟有滅絕之虞，目前僅剩下金門與澎湖兩地尚有鱟的棲息繁衍之處。澎湖地區鱟也面臨生存危機，急需進行復育與保育的工作。本試驗己成功誘引成鱟在人為環境下自然產卵，產卵期從4月24日至7月3日止，產卵高峰在5月；產卵水溫介於23.5-30.8℃間，本年度共收集鱟卵38,919粒。利用自行研發之受精卵循環水孵化系統，順利孵化出2,759隻一齡稚鱟。至本（2009）年6月29日起（孵化後750天）有50隻成功脫殼成為七齡鱟，至2009年9月9日起（孵化後826天）另有5隻成功脫殼成為八齡鱟，並且存活下來。

研究報告摘要(英) The horseshoe crab, Tachypleus tridentatus, is known as a living fossil. It plays a very important role in evolution and medical resarch. Horseshoe crab once is attributed widely along the west coast of Taiwan island decades ago. It is almost eliminated from the coast as a result of pollution and degradation. In Taiwan, Tachypleus tridentatus, can only be found in Kimmen and Penghu island. Horseshoe crab in Penghu is facing survival crisis. Thus, conservation need to be done in no time. The objectives of this study are establishment of inducing wild horseshoe crabs natural spawning under the artificial environment. Spawning season began from April 24 to July 3, and spawning peak period was May. Spawning period water temperature range was 23.5.2℃ to 30.8℃. We finally collected 38,919 horseshoe crab’s eggs altogether in this spawning system to save labor. It’s further to research and develop the circulating water system of fertilized egg hatching- out system. It hatched out 2,759 1st instar larvae in 2009. In June 29 2009, 50 individuals were successfully molted to 7th- instar larvae (after hatching 750 days). In September 9 2009, among of them 5 individuals were successfully molted to 8th- instar larvae (after hatching 826 days) and still alive.