Effect of LED colors on stress responses in pufferfish (Takifugu rubripes)larvae

2014 Fiscal Year Final Research Report

• Project/Area Number: 25660157
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Aquatic bioproduction science
• Research Institution: Kyushu University
• Principal Investigator: YAMAGUCHI AKIHIKO 九州大学, (連合)農学研究科(研究院), 助教 (10332842)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: ストレス行動 / 色覚 / LED / ニューロステロイド

Outline of Final Research Achievements

We examined the effect of LED on the growth and behavior of the larvae of Japanese pufferfish, Takifugu rubripes. Under the red wavelength, the fries moved to the water tank wall as a stress response. The dwarf fishes grew irradiating starts on the eye-formed late embryo stage. Switching the wavelength from red to blue or darkness, the fries dispersed immediately off the wall. It indicates blue signal induce the similar behavior to the darkness. We conclude pufferfish larvae recognize the red color as a danger signal, the blue color as a safe signal to determine their best position in the water. The balance of light colors may be important physical factor to control larvae’s growth and behavior in their birth place of the ocean as well as aquatic culture farm.

Free Research Field

生殖内分泌学