環境計画(2)

[VII-12] Using environmental DNA to understand distribution characteristics of Alien crayfish

〇Kousuke Ikeda¹, Hideyuki Doi², Shigeharu Terui³, Atsuko Kato¹, Takashi Mitsuzuka¹ (1.Pacific Consultants, 2.University of Hyogo, 3.NPO PEG)

Keywords:environmental DNA, primer, Signal crayfish, alien species, principal component analysis

Environmental DNA is a generic name for DNA that exists in water. By examining the DNA contained in the sample water, it is possible to understand what species are present in the study area. The alien species of crayfish have been expanding in Hokkaido where the native species of Japanese crayfish live. For this reason, it is important to understand the relationship between the habitats of both Japanese crayfish and Signal crayfish. In this paper, we conducted environmental DNA and capture distribution surveys on native Japanese crayfish and Signal crayfish introduced into Lake Akan in the 1970s.