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題 名 | Maturation of Yellowfin Tuna (Thunnus albacares) Ovaries from the Southern Waters of Taiwan=臺灣南部海域產黃鰭鮪卵巢的成熟 |
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作 者 | 吳繼倫; 郭慶老; 張正芳; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 24:4 1997.12[民86.12] |
頁 次 | 頁299-312 |
分類號 | 439.22 |
關鍵詞 | 黃鰭鮪; 成熟; 卵發生; Yellowfin tuna; Maturation; Oogenesis; |
語 文 | 英文(English) |
中文摘要 | 研究所用的黃鰭鮪卵巢係由臺灣南部沿近海作業的鮪釣漁船漁獲物中採集而得; 並配合組織學、顯微鏡觀察及肉眼觀察以期瞭解本魚種卵巢的成熟過程。本魚種卵巢的成熟 過程分為五期。由於在採樣過程中未曾發現未成熟的個體,顯示我國沿近海鮪釣漁業是以成 魚為主要漁獲對象。在成熟魚體的卵巢中卵原母細胞的卵徑組成呈多峰分布且同時並存各種 不同發育階段的卵原母細胞,顯示本魚種為多次、分批產卵。黃鰭鮪的卵發生和多數的硬骨 魚類相似,可劃分為 13 個成熟期。在各個不同成熟階段的卵巢和其中的卵原母細胞最前進 的發育階段關係為:在卵巢之發育階段,卵原母細胞的發育階段處於周邊核仁前期與後期。 在卵巢之成熟階段,卵原母細胞的發育階段處於卵黃球的初期、次期和第三期。在卵巢完全 成熟階段,卵原母細胞的發育階段處於核移動期與卵粒成熟期。在已完成排卵的排卵期卵巢 則可見卵原母細胞退化為卵黃泡期與卵黃球的初期、次期和第三期。 |
英文摘要 | To understand the maturation process, histological, microscopic, and macroscopic observations were conducted on the ovaries of yellowfin tuna ( Thunnus albacares) collected from the landings of Taiwanese inshore longliners operating in the southern waters of Taiwan. The development of ovaries during maturation can be grouped into five phases. In the study, no immature ones were found, an indication that the main catches of yellowfin tuna by the inshore longliners were adults. Based on the polymodel frequency distribution and the different developing stages of the oocytes simultaneously existing in the ovary of matured fish, the species was considered to be a multiple and asynchronous spawner. Oogenesis of yellowfin tuna is similar to most of teleostei. It can be broadly divided into 13 growth stages. A correlation between the maturity phase and the most advanced oocytes stages showed that the developing phase corresponds to the early and late peri-nucleolus stage; the maturing phase to the primary and secondary yolk globule stage; the full maturity phase to the migratory nucleus stage and ripe egg stage; the spent phase to the degenerated oocytes at the yolk vesicle stage, primary yolk globule stage, secondary yolk globule stage, and tertiary yolk globule stage. |
本系統中英文摘要資訊取自各篇刊載內容。