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| 題 名 | 臺灣西南海域吉打副葉鰺之生殖生物學研究=Reproductive Biology of the Shrimp Scad (Alepes djedaba) in the Southwestern Waters off Taiwan |
|---|---|
| 作 者 | 陳郁凱; 吳伊淑; 藍揚麒; 翁進興; | 書刊名 | 水產研究 |
| 卷 期 | 33:2 2025.12[民114.12] |
| 頁 次 | 頁13-23 |
| 分類號 | 438.13 |
| 關鍵詞 | 性成熟體長; 生殖腺指數; 生殖季節; Length at maturity; Gonadosomatic index; Spawning season; Alepes djedaba; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 吉打副葉鰺 (Alepes djedaba) 是臺灣西南海域刺網及拖網漁業捕獲的重要經濟魚種之一。然 而,目前關於其生殖生物學的調查報告相當有限。因此,本研究旨在建立吉打副葉鰺的生殖生物學 參數,以供未來資源評估及漁業管理之參考。自 2022 年 11 月至 2023 年 10 月期間,於嘉義東 石、高雄彌陀及梓官漁港共計採集 687 尾樣本,其中雌魚 311 尾、雄魚 376 尾,性比(雌魚佔 總數之比例)為 0.45。雌魚之尾叉長 (fork length, FL) 介於 151.1–232.3 mm,體重 (body weight, BW) 介於 48.9–214.9 g;雄魚之 FL 介於 135.2–247.5 mm,BW 介於 38.0–242.7 g。雌、雄魚之 FL 與 BW 關係式分別為 BW = 4.8 × 10-6FL3.22 及 BW = 3.9 × 10-6FL3.26,兩者間具顯著差異 (p < 0.05)。依據生殖腺指數 (gonadosomatic index, GSI) 變化及卵巢組織觀察推估,其繁殖期為 2–9 月, 4–7 月為高峰期。雌魚孕卵數介於 30,430–212,033 粒,平均為 119,508 粒;雌魚的 50%性成熟尾 叉長 (fork length at 50% maturity, Lm50) 為 198.4 mm。 |
| 英文摘要 | The shrimp scad (Alepes djedaba) is one of the commercially important species caught by gillnet and bottom trawl fisheries in the southwestern waters off Taiwan. However, information on its reproductive biology remains limited. This study aimed to estimate the reproductive parameters of A. djedaba to support stock assessment and fishery management. From November 2022 to October 2023, a total of 687 specimens were collected from Dongshi, Mituo, and Keziliao fishing harbors. Among them, 311 were females and 376 were males, with a female proportion (sex ratio) of 0.45. Fork length (FL) and body weight (BW) ranged from 151.1 to 232.3 mm and 48.9 to 214.9 g for females, and 135.2 to 247.5 mm and 38.0 to 242.7 g for males, respectively. The length-weight relationships were BW = 4.8 × 10-6FL3.22 for females and BW = 3.9 × 10-6FL3.26 for males, showing a significant difference between sexes. Based on the fluctuation of the gonadosomatic index (GSI) and histological observations, the spawning season extended from February to September, with a peak from April to July. Fecundity (F) ranged from 30,430 to 212,033 oocytes, with an average of 119,508 oocytes. The estimated length at 50% maturity (Lₘ₅₀) for females was 198.4 mm FL. |
本系統中英文摘要資訊取自各篇刊載內容。