Growth and age structure of alfonsino (Beryx splendens) from the lower east coast, North Island, New Zealand
Growth and age structure of alfonsino (Beryx splendens) from the lower east coast, North Island, New Zealand
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新西兰北岛下东海岸的金雀花 (Beryx splendens) 的生长和年龄结构
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
P. Horn
中科院分区：
文献类型：
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作者：
B. Massey;P. Horn
摘要 对来自 Palliser Bank、Tuaheni High 和 Paoanui Ridge 的商业上岸金鲹 (Beryx splendens Lowe, 1834) 进行了采样，以描述生长情况并确定渔获量的年龄构成。研究表明矢状耳石每年形成1个不透明带和1个透明带，透明带在深秋沉积。当耳石核完全形成时，鱼可能大约10个月大。雄性和雌性的身长-体重方程不同，并且都随着产卵周期在一年中发生变化。 Palliser Bank 没有发生大小选择性死亡率。在任何给定年龄，在所有检查的基础上，雌性都明显大于雄性，但雄性和雌性的生长在不同场地之间似乎是一致的。增长速度慢于日本水域和大西洋。年龄结构因场地而异，但随着时间的推移，帕利斯尔银行的年龄结构相当稳定。 5 岁时，Palliser 就开始全面招募商业渔业……
Abstract Commercial landings of alfonsino (Beryx splendens Lowe, 1834) from the Palliser Bank, Tuaheni High, and Paoanui Ridge were sampled to describe growth and determine the age composition of catches. The study indicated that one opaque and one hyaline zone were formed annually in sagittal otoliths, the hyaline zone being deposited in late autumn. Fish were probably about 10 months old when the otolith nucleus was fully formed. The length‐weight equations for males and females differed and both changed throughout the year in parallel with the spawning cycle. Size‐selective mortality did not occur on the Palliser Bank. Females were significantly larger at any given age than males on all grounds examined, but growth of males and females appeared consistent between grounds. Growth was slower than in Japanese waters and the Atlantic. Age structure varied between grounds, but was reasonably constant over time on the Palliser Bank. Full recruitment to the commercial fishery occurred at age 5 on the Palliser...