Use of the illicium for age determination and verification of yellow goose fish Lophius litulon off Aomori Prefecture, northern Japan

被引：3

作者：

Takeya, Yuhei ^{[1
,2
]}

Takatsu, Tetsuya ^{[3
]}

Yamanaka, Tomoyuki ^{[1
,6
]}

Shibata, Yasutoki ^{[4
]}

Nakaya, Mitsuhiro ^{[5
]}

机构：

[1] Aomori Prefectural Ind Technol Res Ctr, Inst Fisheries, Hiranai, Aomori 0393381, Japan

[2] Hokkaido Univ, Grad Sch Fisheries Sci, Hakodate, Hokkaido 0418611, Japan

[3] Hokkaido Univ, Fac Fisheries Sci, Hakodate, Hokkaido 0418611, Japan

[4] Japan Fisheries Res & Educ Agcy, Tohoku Natl Fisheries Res Inst, Hachinohe, Aomori 0310841, Japan

[5] Hokkaido Univ, Fac Fisheries, Hakodate, Hokkaido 0418611, Japan

[6] Res Inst Environm Agr & Fisheries, Osaka, Osaka 5990311, Japan

来源：

NIPPON SUISAN GAKKAISHI | 2017年 / 83卷 / 01期

关键词：

EAST CHINA; PRECISION; GROWTH; SEA;

D O I：

10.2331/suisan.16-00041

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Yellow goose fish Lophius litulon is an economically valuable fish species around Japan. The aim of the present study was to evaluate a suitable technique for age determination of yellow goose fish using the illicium. Specimens of yellow goose fish were collected by commercial boats and research vessels from the Sea of Japan, Tsugaru Strait and the Pacific Ocean off Aomori Prefecture from November 2013 to March 2016 using bottom gill, set and trawl nets. Each specimen was measured and sexed, and the illicium and 8th vertebra were removed in the laboratory. The epidermis of each illicium was removed after boiling, and the illicia were dried, whereas each of the 8th vertebra was boiled and sectioned. We found that the best ageing method was a count of opaque zones in the illicia. This was facilitated using the cross-sectioned illicia that had been etched with 1 mol/L HCl for 30 s, stained with methylene blue for 4 h and viewed under transmitted and incident light. Opaque zones form twice per year ( mainly during June and November. December) in the illicia. Age determination using opaque zones in the illicia was more accurate than that using opaque zones in the vertebral centra. Because the illicia of yellow goose fish are easy to collect and manipulate for age determination and the growth rate estimated using the illicia and tagging experiments is similar, this method of age determination may be useful for these fish in this region.

引用

页码：9 / 17

页数：9