Phylogeography Study of Ammodytes personatus in Northwestern Pacific: Pleistocene Isolation, Temperature and Current Conducted Secondary Contact

To assess the role of historical process and contemporary factors in shaping population structures in Northwestern Pacific, mitochondrial control region sequences were analyzed to characterize the phylogeography and population structure of the Japanese sand lance Ammodytes personatus. A total of 429 individuals sampled from 17 populations through the species' range are sequenced. Two distinct lineages are detected, which might have been divergent in the Sea of Japan and Pacific costal waters of Japanese Island, during the low sea level. Significant genetic structure is revealed between the Kuroshio and Oyashio Currents. However, significant genetic structure is also detected in the Sea of Japan, contracting expected homogenization hypothesis in Tsushima Current. The haplotype frequency of lineages in both sides of Japanese Island and significant genetic structure between north and south groups revealed that the distribution of lineage B and north group were highly limited by the annual sea temperature. The lack of lineage B in Qingdao population with low sea temperature reflects the sea temperature barrier. Lack of genetic structure in the south group and north group populations indicated that ocean currents within groups facilitated the dispersal of A. personatus

Culture and collective action: Japan, Germany and the United States after 11 September 2001

In order to put a lens on the issue of international security cooperation after 11 September 2001, this article examines the question of how collective action in International Relations becomes possible. The author maintains that a fair amount of inter-state collective action can be understood, even explained, by analysing the culture of the international system. Using discourse analysis as a tool, the analysis addresses the underlying ideas, norms and identities that constitute the relationship between the United States and Japan, on the one hand, and Germany and the United States, on the other, as it has evolved since September 2001. The method exposes how some ideas are privileged over others, how norms are maintained, reformulated and abandoned, how identity is constructed and how power is legitimized in the 'war on terror'