Stock structure of bluenose (Hyperoglyphe antarctica) off the north‐east coast of New Zealand based on the results of a detachable hook tagging programme
Stock structure of bluenose (Hyperoglyphe antarctica) off the north‐east coast of New Zealand based on the results of a detachable hook tagging programme
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基于可拆卸钩标记程序结果的新西兰东北海岸蓝鼻（Hyperoglyphe antarctica）种群结构
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发表时间：
2003
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通讯作者：
P. Horn
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作者：
P. Horn
摘要 1987 年底，在新西兰吉斯伯恩和帕利瑟角之间的六个商业渔场，蓝鼻鱼（Hyperoglyphe antarctica）被挂在鱼钩上的飘带标记。这些标记的鱼钩是在商业快跑线上钓鱼的，但上面附着了 5.5 公斤的断裂张力尼龙痕迹，当鱼抓住鱼钩并挣扎着逃脱时，尼龙就会断裂。根据与可拆卸渔具同时捕捞的全强度控制线的渔获量，1971 蓝鼻鱼被标记。在接下来的 8.5 年里，44 只被标记的蓝鼻鸟（标记地点和重新捕获地点均已知）被重新捕获。除七次外，所有这些回报都发生在标记后的第一年，表明长期标记保留率不佳。蓝鼻在短期内似乎相对久坐，但能够进行相当快速和广泛的运动。 4 条带有标签的鱼游历了超过 450 公里的距离，并向标记区域的北部和南部移动。这些数据表明，新西兰东海岸北角和凯库拉之间的蓝鼻鲸可能由单一生物种群构成。
Abstract In late 1987, bluenose (Hyperoglyphe antarctica) were tagged with streamers attached to fish hooks, at six commercial fishing grounds between Gisborne and Cape Palliser, New Zealand. The tagged hooks were fished on commercial trot lines, but were attached with traces of 5.5 kg breaking strain nylon that broke when the fish took the hook and struggled to escape. Based on catches from full strength control lines fished simultaneously with the detachable gear, 1971 bluenose were tagged. In the subsequent 8.5 years, 44 tagged bluenose (where both the sites of tagging and recapture where known) were recaptured. All but seven of these returns occurred in the first year after tagging, indicating that the rate of long‐term tag retention was not good. Bluenose appeared to be relatively sedentary in the short term, but were capable of quite rapid and extensive movement. Four tagged fish had travelled distances in excess of 450 km, with movements to both the north and south of the tagging area. These data indicate that bluenose off the eastern coast of New Zealand between North Cape and Kaikoura probably comprise a single biological stock.