| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Outline of Final Research Achievements |
Dicyemids are microscopic animals and endoparasites that live only in the renal sacs of benthic cephalopod molluscs. The adult stage has a distinct anterior region termed a“calotte”by which they attach to the renal appendages of the host Calotte shapes of dicyemids detected in different host species more closely resembled each other than in dicyemids found in the same host species. Species of dicyemids that possess similar calotte shapes are very rarely found together in a single host individual. This appears to be morphological convergence in calotte shapes. The molecular phylogenetic analyses indicated a close relationship among species living in the same host renal sacs. In addition, a host-switching likely occurs between species that have similar inhabitants in several species of host cephalopods. Thus, the calotte shape pattern of dicyemids may be formed by both convergent evolution and host-switching.
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