分野別研究紹介

VIII. Development of Rearing and Breeding Techniques for
   Experimental Organisms

 Healthy organisms are necessary to obtain high-quality data on the response of organisms to environmental change or the toxicity of certain chemicals. At the MERI, we are developing new techniques to ensure that we can reliably produce healthy experimental organisms. We are also making progress on the rearing and breeding of rare marine and freshwater organisms.

   
Tomato clownfish   Banggai cardinalfish   Japanese lobster
         
   
juvenile Sakhalin surf clam   Japanese abalone (spawning)   Okinawan staghorn coral

Rearing Facilities
 The husbandry facilities at the Central Laboratory and Demonstration Laboratory allow us to raise our experimental organisms under specified, controlled seawater temperatures. Furthermore, by specifying the light conditions (i.e., light quality, amount, and day length) and water temperature, both of which impact the maturity of many marine organisms, we are able to breed a variety of species.

Central Laboratory facilities
Seawater supply facilities:
Water intake capacity: 75 m3/h
Water filtration capacity: 25 m3/h x 2 systems
Water temperature control facilities:
6 m3/h of 32 °C seawater, and 3 m3/h of 8 °C seawater
Rearing facilities:
Nursery stock tanks, spawning tanks with attached light-control devices, temperature acclimation tanks, spawning tanks for rearing broodstock, etc.
  Demonstration Laboratory facilities
Seawater supply facilities:
Water intake capacity: 200 m3/h of seawater x 2 systems
Natural seawater filtration capacity: 20 m3/h x 2 systems
Thermal effluent filtration capacity: 20 m3/h x 1 system
10–35 °C seawater: 7 m3/h (marine organism husbandry experimental facilities)
Rearing facilities:
Spawning tanks for rearing broodstock, juvenile rearing tanks, etc.
     
 
Indoor tanks (temperature acclimation tanks)   Applied biological experimental facilities (front) and marine organism rearing experimental facilities (back)
     
Producing Experimental Organisms to Meet Research Needs
 At the MERI, we have succeeded in rearing over 100 species of marine organisms. We have the capacity to rear and breed organisms to meet research objectives and separate them by life stage (e.g., eggs, larvae and juveniles, and adults) or size. We aim to achieve an ever more reliable supply of healthy organisms by refining our early life-stage feed and improving our techniques.


Feeding flounder fingerlings with high-nutrient feed (red sea bream eggs)