2011-01-312024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/671956摘要：本計畫將分析科學觀察員於延繩釣漁船上採集南方黑鮪的耳石。所採集得的耳石將用於年齡查定，以判斷南方黑鮪的年齡。從年齡與體長，體重資料，將可估算得南方黑鮪的成長係數。藉由年齡與體長(體重)的轉換公式，大量的漁業記錄資料，將可用於建立我國所捕獲的南方黑鮪之年齡組成與成長。耳石碳同位素可能受到生理，食物與溫度之影響，而氧同位素則是受到溫度影響，本計畫將探討南方黑鮪耳石的穩定性碳氧同位素可能反應的生理與環境資訊，增進對該魚種之個體生態學知識。<br> Abstract: This project aims to analyze the otolith of southern bluefin tuna (SBT, Thunnus maccoyii) collected by scientific observers on Taiwanese longline vessels. The age of each SBT sampled for the otolith will be estimated by examining the otolith annuli. These data together with length and weight data will be used to evaluate the growth rate parameters of the SBT caught by Taiwanese longliners. Length and weight data of all SBT caught will be transformed into age data to develop the age composition via the age-length (weight) key. Otolith carbon stable isotope may be influenced by physiology, food and temperature while otolith oxygen isotope is influenced by water temperature. This study will evaluate the physiological and environmental effects on otolith stable isotopic composition of the SBT. The outcome will provide further insight into the autecology of the SBT.南方黑鮪年齡成長耳石Southern Bluefin TunaAge and growthOtolith