| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Gastropod specimens collected at bathyal, abyssal and hadal depths (200-7500 m in depths) by various research cruises were studied taxonomically, resulting in recognition of 185 species in the bathyal zone (200-2000 m, including results of previous studies) and 173 in the abyssal and hadal zones. Careful analyses of vertical and geographical distributions of each species revealed the the ecological relationships among those species in deep-sea system. Species exhibiting a wide vertical distribution often possess various phenotypes depending on the depths of habitat, and future molecular phylogenetic study will be necessary to clarify the detailed relationships among those forms. Probable undescribed species occupy nearly 70% of total species occurred at depths below 2000 m, and descriptions of these species will also be a future subject.
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