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頁籤選單縮合
題 名 | 池中育成草蝦之自然產卵與催熟產卵=Natural and Induced Spawning of Pond-reared Tiger Prawn (Penaeus Monodon) |
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作 者 | 鄭金華; 陳紫媖; | 書刊名 | 水產研究 |
卷 期 | 15:1 2007.06[民96.06] |
頁 次 | 頁37-43 |
分類號 | 439.66 |
關鍵詞 | 草蝦; 自然產卵; 催熟; 生殖力; Penaeus monodon; Natural spawn; Induced maturation; Fecundity; |
語 文 | 中文(Chinese) |
中文摘要 | 從石斑魚池捕獲的八批大型草蝦中,其中一批14尾雌蝦,捕獲當時的平均卵巢指數為2.4±0.9。有二尾分別在三天及六天後自然產卵並分別孵出幼苗72.8萬及11.9萬尾。另一批25尾雌蝦,捕獲當時的平均卵巢指數為2.0±0.8。未自然產卵的雌蝦,分別在切除眼柄後第3 ~ 11天產下第一批卵,每尾平均產卵量為23.8±12.2萬粒,受精率為90.7±6.8%,孵化率為90.5±2.1%。大多數雌蝦產二次以上,其中一尾產四次。共產出受精卵109.0萬粒,共孵出幼苗56.5萬尾。在部份石斑魚池中混養的草蝦具有高生殖力的原因可能是:(1) 草蝦放養密度低,成長快;(2) 池中天然食物多,餌料品質高;(3) 鹽度等環境條件與外海相近;及 (4) 養殖期間10~12個月,使雌蝦可以長到120 g以上。 |
英文摘要 | Eight batches of mature prawns, Penaeus monodon, were collected from grouper ponds. In one of the batches, there was 14 female with ovarian index of 2.4±0.9. Two of them spawned naturally on the third and the sixth day, and hatched 728,000, and 119,000 nauplii, respectively. Another batch has 25 females with ovarian index of 2.0±0.8. Those females started to spawn from 3 to11 days after uni-eyestalk was ablated. The average number of eggs was 238,000±122,000 with fertilization rate of 90.7±6.8% and hatching rate of 90.5±2.1%. Most of females spawned more than twice, one of them spawned four times. The most productive female laid 1,090,000 eggs and hatched 565,000 nauplii. Study suggested that high fecundity of pond-reared tiger prawn was due to: (1) low culture density in pond that allowed them to have a fast growth; (2) sufficient and highly nutritious food; (3) well environmental conditions that was similar to open sea, and (4) long culture period 10~12 month for fully growth, reaching size greater than 120 g. |
本系統中英文摘要資訊取自各篇刊載內容。