Elucidation of the factors affecting the egg quality of chub mackerel and establishment of evaluation method of egg quality

2015 Fiscal Year Final Research Report

• Project/Area Number: 25450276
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aquatic bioproduction science
• Research Institution: Kyushu University
• Principal Investigator: NAGANO NAOKI 九州大学, (連合)農学研究科(研究院), 准教授 (50437943)
• Co-Investigator(Renkei-kenkyūsha): MATSUYAMA Michiya 九州大学, 大学院農学研究院, 教授 (00183955) ; SAKAGUCHI Keishi 九州大学, 大学院農学研究院, 准教授 (50396280) ; KITANO Hajime 九州大学, 大学院農学研究院, 助教 (30635008)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: マサバ / 種苗生産 / 卵質

Outline of Final Research Achievements

The chub mackerel (Scomber japonicus) is a commercially important species and aquaculture of chub mackerel is well established in south-western Japan. In this study, the effect of age and nutritional status (fatty acids and amino acids in the food) of female broodstock on reproductive performance and egg and larval quality were evaluated.
Reproductive performance and larval quality were higher in the 3-year-old broodstock compared to 1-year-old broodstock. Further, the addition of fish oil or DHA to the broodstock diet improved egg and larval quality.

Free Research Field

海産魚の種苗生産と養殖技術の開発