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、醫學應用及潮間帶生態指標上，都具有相當重要的意義。一、二十年前曾廣泛分布於台灣西部沿海，但近年來由於潮間帶嚴重的污染與破壞，使得鱟有滅絕之虞，急需進行復育與保護的工作。本試驗成功的蓄養中國鱟 (Tachypleus tridentatus) 在人為環境下自然產卵，產卵期從2007年6月6日至9月10日止，7月為產卵高峰期，約佔總產卵量的50% 以上，產卵水溫在26.2 ~ 31.2 ℃ 間。2007年共收集鱟卵74,504粒，利用自行研發的受精卵循環水孵化系統，順利的孵化出18,460隻一齡稚鱟，其中有624尾一齡稚鱟脫殼成為二齡鱟，更有43隻二齡鱟成功脫殼成為三齡鱟，孵化後第231天亦有2隻三齡鱟順利脫殼成為四齡鱟，並且活存下來，此為目前國內相關研究紀錄中首見。

摘要abstract(英) The horseshoe crab (Tachypleus tridentatus) is known as a living fossil. It plays a very important role in evolution and medical resarch. The horseshoe crab onced istributed widely along the west coast of Taiwan island decades ago. It was almost eliminated from the coast as a result of environmental pollution and degradation. Currently, Tachypleus tridentatus can only be found in Kimmen and Penghu islands. Tachypleus tridentatus in both islands arre still facing threat to its survival. The objectives of this study were to induce wild horseshoe crabs natural spawning under a designed system. Spawning occurred from June 6 to September 10 2007, and spawning peak period was July (53%). Water temperature ranged between 26.2 and 31.2 ℃.There were 74,504 horseshoe crab’s eggs collected. Eggs were then moved to the circulating water system for hatching- out. There were 18,460 1st instar larva and 624 larva molted into 2nd instar stage. Only 43 individuals were successfully molted into 3rd instar larva. After 231 days of hatching-out, it still had two that successfully molted into 4th instar larva.