利用形態學及生態學上之差異性探討HokI之系統羣

Use of Morphological and Ecological Variations for Classification of Hoki Groups

郭慶老(Chin-Lau Kuo)

《臺灣水產學會刊》 12卷1期 (1985/06) Pp. 36-43

https://doi.org/10.29822/JFST.198506.0002

摘要

本報告之目的在於利用形態學差異，卽耳石上所顯示的輸紋型的頻度分布、體長與耳石諸性狀的關係、體長與體重之關係等，和生態學差異，卽分布與洄游、成熟與產卵、年齡與成長等，來討論紐西蘭四周海域Hoki的系統羣問題。

並列摘要

The study concerning Hoki groups in waters around New Zealand is seldom conducted. In present paper, the author dealt with some morphological and ecological characteristics to investigate this problem.
The frequency distribution of ring patterns on otolith, the relatrionships between body length and characters of otolith, together with the distribution and migration, maturation and spawning, feeding habit, together with the distribution and migration, maturation and spawning, feeding habit, and growth were discussed.
The fish in the NORTHWEST and the SOUTH regions show much more similarity in most of the morphological and ecological characteristics than the fish in the EAST region. Also, there are some indications of fish between regions. But the fish spawn at different regions in almost the same season, and feed in different grounds, showing different self-perpetuating systems. Therefore, fish in the three regions are considered to be different groups.