農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

劍尖槍鎖管(Uroteuthis (Photololigo) edulis)是臺灣火誘網漁業之主要目標物種之ㄧ，同時也是南東海重要的經濟頭足類之一。過去，對該物種在基本的生殖及年齡成長上已有研究，但對於終年均有產卵行為的劍尖槍鎖管來說，探究其季節性的年齡與成長差異是有必要性。因此，分析2006 ~ 2010年間劍尖槍鎖管在各季節孵化的鎖管活至被捕撈後的成長差異。結果顯示各季所孵化的雌、雄鎖管成長過程是以指數型為最佳，最大年齡均為270天以內。在體型上是以捕獲春生群與冬生群的鎖管體型最大（ML > 300 mm），夏生群的鎖管體型最小（ML < 210 mm），且冬生群外套膜的成長較春、夏及秋生群為快。推測當冬生群活至180天時正處於春、夏時期，此時的棲息水溫正逐漸變暖，導致了冬生群活至180天後，成長快於其他三季孵化群。另本研究於2010年9月在彭佳嶼西部與北部海域採得劍尖槍鎖管卵塊，其中以西部海域較多。採得卵塊利用長度與重量兩種方式估計數量，分析結果顯示鎖管完整卵串之卵數在136~440之間(平均為264.4±118.4, n = 8) ，以重量或長度為指標估算卵數結果並無差異。本研究可確認彭佳嶼的西方至北方海域為劍尖槍鎖管產卵場之一。

Uroteuthis (Photololigo) edulis is dominantly target species of the torch-light fishery in Taiwan. It is also one important species of the commercial cephalopod in the southern East China Sea. In the past, those studies of reproduction and growth were investigated. It is important that exam the variable of seasonal age and growth for the squid spawning throughout the year. The result shows that it was the exponential function in the growth process of the each female and male hatched group in four seasons. The maximum age observed was about 270 days in four hatched groups. The size of winter hatched group and spring hatched group were larger (> 300 mm); the size of summer hatched group was smallest (< 210 mm). The ML of winter hatched group grew faster than the spring, summer and autumn hatched groups. We considered the winter hatched group which lived 180 days experienced in spring and summer and the warmer water temperature in the habit caused the winter hatched groups living in 180 days grew faster than other three hatched groups. The number of eggs was estimated used weight and length index and average eggs of each was between 136 to 440 (mean = 264.4±118.4, n = 8). The result of gees estimate used weight or length was on difference. Judging from the find of egg mop, the northwestern waters off Peng-Jia islet is one of the spawning grounds for U. (P.) edulis.