Period and Interval2015/04/01 - 2016/03/31
Research Area
Tohoku, Sea of Japan, Okhotsk
CategoryOthers
OverviewCoastal marine organisms have been influenced by global climatic changes irrespective of the effect of earthquake and tsunami. To evaluate the effects of 2011.3.11 earthquake on marine organisms, we need examine the distribution and population changes from several decade ago. In this study, we evaluate the effects of both global climate changes and earthquake by analyzing the population changes using Bottom-trawl survey data. In addition, focusing on Gadus macrocephalus, we developed genome-wide SNP markers and detect the markers relating to environmental adaptation, and using these SNP makers, we develop the method evaluating population viability responding to the environmental changes. Method. We used captured data from 1993 to 2012 for 7 demersal species, and obtained environmental variable (surface and bottom water temperature, salinity, current) for JCOPE. Then, we estimate the CPUE dynamics of these fishes. In this year, we analyze these data by using Convergent Cross Mapping method. We conducted RAD-seq analysis for 234 individuals form 19 population around the coast of Japan. We obtained 12942 SNP markers. We try to detect SNP markers related to environmental variables such as sea water temperature. In addition, we examined the relationships between hemoglobin polymorphism and water temperature.