臺灣博碩士論文加值系統

台灣西海岸具有廣大淺灘，適於淺海養殖，北由新竹香山南至台南及澎湖均有養殖牡蠣，近年來本省養殖牡蠣有殼空腔化（Chambering）的現象。所謂空腔化就是牡蠣殼在形成時殼層與殼層間有空隙產生之狀況稱之；本省養殖牡蠣早已被發現有此現象，但缺乏相關研究。因此，本論文即針對牡蠣殼空腔化及衍生之相關課題進行研究。實驗分三部分進行：1. 評估空腔化指標計算方法及其與牡蠣成長之關係; 2. 空腔化對牡蠣被掠食之影響; 3. 空腔化與重金屬污染相關性探討。分別以STI值（Shell thickness index）、密度測量法、擊碎測量法及影像數位測量法計算空腔化之情形；比較不同空腔化計算方式及其和牡蠣成長CI值（condition index）的關係。結果顯示STI值及密度是牡蠣殼空腔化較佳之指標;當牡蠣STI值愈小或是密度愈小，表示空腔化愈大。在牡蠣被蚵岩螺掠食之影響實驗中，則顯示牡蠣殼密度愈小，被蚵岩螺攝食鑽孔的深度愈深的趨勢；而重金屬總濃度(包括Cu、Zn、Mn、Cd、Fe)和空腔化未見有統計上之相關性。

Oyster (Crassostrea gigas) culture has been operating on the west coast of Taiwan for two hundred years. In recent years, the occurrence of shell chambering in oysters was noticed, but lack of scientific studies. This study concentrated on: 1. Evaluation of shell chambering methods. 2. Possible relationship between chambering and Thais clavigera predation. 3. Relationships between chambering and heavy metals. The results suggested that shell thickness index (STI) and density reflect chambering status adequately. There was a negative trend between depth of drilling hole by T. clavigera and density of oyster shell, but not significantly. Amount of total heavy metals did not appear significantly related to shell chambering neither.

目錄
章次 頁次
中文摘要……………………………………………………………………………Ⅰ
英文摘要…………………………………………………………………………….II
目錄…………………………………………………………………………………Ⅲ
表目錄………………………………………………………………………………Ⅳ
圖目錄………………………………………………………………………………V
一、前言……………………………………………………………………………1
二、材料與方法……………………………………………………………………4
三、結果……………………………………………………………………………11
四、討論……………………………………………………………………………18
參考文獻……………………………………………………………………………21
附錄…………………………………………………………………………………62

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