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題 名 | Analysis of the Morphometric Characters of the Kuruma Shrimp(Penaeus japonicus) in the East China Sea and the Taiwan Strait=東海及臺灣海峽產斑節蝦(Penaeus japonicus)之外部形態分析 |
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作 者 | 曾宗德; 葉顯椏; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 26:4 1999.12[民88.12] |
頁 次 | 頁203-212 |
分類號 | 387.13 |
關鍵詞 | 形質變異; 系群結構; 直交變值分析法; 集群分析法; Morphometric variation; Stock structure; Canonical variate analysis; Cluster analysis; |
語 文 | 英文(English) |
中文摘要 | 利用外部形態之變異檢視東海及台灣海峽產斑節蝦之系群結構。採集1個來自東海 北部、2 個來自東海南部、3 個來自台灣西部沿岸及 3 個來自台灣海梜中部等共 9 個樣本 加以分析。 每一樣本量測所得之 11 個形質,經 Burmaby 法標準化後,依性別分別以直交 變值分析法 (Canonical variate analysis) 及集群分法加以析。結果顯示,無論雌雄,全 部之採樣區域皆可分為 3 個集群: 第一群為東海北部群、第二群為台灣沿岸群及其它採樣 區組成之第三群。因蝦類成長至一定之大小或階段會從沿岸洄游至外海,故第二群 (小個體 ) 被視為第三群 (較大個體 ) 之未加入之子代:兩群之形質變異, 只是不同生活階段之故 。因此,東海及台灣海崍產斑節蝦應可分為二個系群:一為東海北部群;另一群則分佈於台 灣海崍與東海南部。本研究利用外部形態已成功之判別斑節蝦之系群結構,但更進一步之驗 証如遺傳學証據是必須的。 |
英文摘要 | Morphometric variation was used to examine the stock structure of the kuruma shrimp in the East China Sea and the Taiwan Strait. Nine samples were collected, one from the north of the East China Sea, two from the south of the East China Sea, three from the inshore areas of Taiwan, and three from the middle of the Taiwan Strait. The 11 measurements made for each individual were size-standized by Burnaby's method, and resulting measurements were used in the canonical variate analysis and cluster analysis by sexes. The results showed that all sampling areas were clustered into three distince groups for each sex, the first group included the north of the East China Sea, the second group included inshore areas of taiwan, the third group included the other areas. Shrimps often migrate from inshore to offshore as they grow to specific sixe, so the second group (the smaller individuals) was considered as the unrecruiting offspring of the third group (the larger ones). the morphometric variation between the second and the third groups could be attributed to different life stage. We, therefore, suggest that the kuruma shrimp in the East China Sea and the Taiwan Strait can be discriminated into two stock. One is in the north of the East China Sea, and the other is in the south of the East China Sea and the Taiwan Strait. The present study demonstrates that the utility of morphometric characters for defining stocks of kuruma shrimp is available, but further verification of the stock structure (e.g., genetic evidence) is essential. |
本系統中英文摘要資訊取自各篇刊載內容。