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Artificial pond was built for a substitute habitat of nine spine stickleback (Omono type) lose habitat for paddy fields rezoning on Yuzawa city Akita, In 2000, 20 Omono type fishes were released in the artificial pond with Fresh-water type unknown pathway of entry. In 2001, it was confirmed that there were first filial hybrid (F_1 hybrid) between Omono and Fresh-water types. We examined the proportions of each types, Omono type, Fresh-water type and hybrid, in the artificial pond by isozyme analysis from 2001 to 2006. Unlike the population of Hiraka, reproductive isolation between Omono and Fresh-water types was defective, so around 10％ F_1 hybrids come out. It was suggested that these male F_1 hybrids were reciprocally sterile as in the case of Fresh-and Brackish-water types. Although it was possible that third filial generation was exist at least, it was unclear about forth and later filial generation by the limit of isozime analysis. Although the artificial pond was built to preserve Omono type, mixing Fresh-water type resulted number of Omono type decreases and Fresh-water type increases. No such cases have been reported in the ponds coexisting Omono and Fresh-water types in Hiraka. It suggests that degree of completion in reproductive isolation is different among each populations.

一般高齢者の介護予防推進事業である高齢者サロン運営の課題と対策を検討する目的で島根県出雲市C地区の高齢者サロンに参加して実態把握をするとともに、サロンの世話役・福祉委員・参加者等に実施したインタビュー結果をサロン活動の継続の困難さに視点を当て分析した。課題は①独居高齢者等の不参加②参加意欲維持の困難さ③働き盛り男性福祉委員の活動の困難性④世話役の高齢化と人材不足による活動の困難性⑤企画内容の工夫の困難性⑥活動記録等の保存と活用の不徹底⑦社会資源等の情報伝達と周知不足⑧予算確保の困難性・助成金の使途制限による使用の困難性⑨実施場所と回数の不足⑩実施場所の環境整備不足であった。対策として社会福祉協議会、自治協会・保健師などがサロン運営の課題を共有する機会を持ち、サロンを運営する世話役や福祉委員への情報提供や必要な支援することが重要である。また、高齢者が主体的に参加できるよう協力を求めながら実施していく必要がある。