Japan is considered a global hot spot of biodiversity. With regard to species diversity, insects
are no exception. To date, more than 32,000 insect species have been identified in Japan …

Japanese macaques, Macaca fuscata, are systematically reviewed, based on examination
of 1264 specimens, survey of relevant literature, and observation of natural populations. This …

Background The study of speciation in the marine realm is challenging because of the
apparent absence of physical barriers to dispersal, which are one of the main drivers of …

The Quaternary cold periods in the Northwestern Pacific are thought to have heavily
influenced the amount and distribution of intraspecific genetic variation in marine fishes. To …

We present high-resolution analyses of clay mineral assemblages combined with analysis of
Sr–Nd–Pb isotopic compositions of the< 2 μm silicate fraction of sediments from Integrated …

The stratigraphic distribution and abundance of molluscs and planktonic foraminifera within
a sixth-order (41kyr) depositional sequence of the early Pleistocene Omma Formation in …

The stratigraphic distribution of warm-water molluscs, planktonic foraminifers and diatoms in
Plio-Pleistocene strata (3.5–0.8 Ma) of the Sea of Japan coast of Japan is the basis for …

How early stages of speciation in free-spawning marine invertebrates proceed is poorly
understood. The Western Pacific abalones, Haliotis discus, H. madaka, and H. gigantea …

The Quaternary hemipelagic sediments of the Japan Sea are characterized by centimeter-to
decimeter-scale alternation of dark and light clay to silty clay, which are bio-siliceous and/or …

Investigating spatial pattern of adaptive variation and its underlying processes can inform
the adaptive potential distributed within species ranges, which is increasingly important in …