ARTIFICIAL RAISING SYSTEM FOR AQUATIC INSECT AND METHOD FOR ARTIFICIALLY RAISING FIREFLY

摘要

PROBLEM TO BE SOLVED: To actualize an artificial raising of an aquatic insect in the same environment as that of a natural ecosystem. SOLUTION: This system is equipped with a stream supply apparatus A for supplying water necessary for raising an aquatic insect such as a larva of a firefly survivable only in a severe condition and an assembly type stream route B for raising an aquatic insect by water supply from the stream supply apparatus. The stream supply apparatus A can supply a stream which is cleaned, enriched in dissolved oxygen, adjusted in pH and comprises bacteria, on the like, to treat a waste matter of an organism to the stream route B. The stream route B is composed of plural stream route units 12 and is constituted of a low-alkali cement capable of supplementing a calcium component necessary for the growth of Semisulcospira bensoni to be a feed of a larva of a firefly. A gravel bed 14 formed by laying quartz schist on the bottom of the stream route is arranged, an aquatic plant to be a feed for Semisulcospira bensoni is planted to form a consistent ecosystem. In the ecosystem, an existence circulation of organism such as spring water, an aquatic plant, Semisulcospira bensoni, a larva of a firefly, a metamorphosis of a firefly, reproduction is secured.