Mortality in pelagic egg stage of black sea bream, Acanthopagrus schlegelii in Hiroshima Bay

Research Project

Project/Area Number	24658170
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	General fisheries
Research Institution	Hiroshima University
Principal Investigator	UMINO Tetsuya 広島大学, 生物圏科学研究科, 准教授 (70232890)
Co-Investigator(Renkei-kenkyūsha)	SHOUJI Jun 広島大学, 大学院生物圏科学研究科, 准教授 (10397565)
Project Period (FY)	2012-04-01 – 2015-03-31
Project Status	Completed (Fiscal Year 2014)
Budget Amount *help	¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000) Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000) Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000) Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords	浮遊卵 / 減耗 / クロダイ / 海洋資源 / 水産学 / 授精卵 / 発生段階 / 広島湾
Outline of Final Research Achievements	The abundance of fish stock highly depends on the survival of egg and larvae during planktonic stage. The objective of this program is to estimate for mortality rate of pelagic egg stage that is most vulnerable to environmental perturbations. A case study using black sea bream, Acanthopagrus schlegelii in Hiroshima Bay revealed that survival rate during egg stage was estimate at 0.50-0.9/day based on frequency on each egg stage at a main spawning ground in the Bay.

Report

(4 results)