著者
永江 栞奈 高橋 弘明 遠藤 広光
出版者
一般社団法人 日本魚類学会
雑誌
魚類学雑誌 (ISSN:00215090)
巻号頁・発行日
pp.21-007, (Released:2021-07-30)
参考文献数
23

Mating behavior and early development of Cobitis sp. (BIWAE type D, TosaShima-dojo) were observed in the laboratory by inducing spawning of females with human chorionic gonadotropin (HCG). Subsequently, laboratory bred individuals were compared with spawned eggs and larvae obtained from the field. Mature adults, naturally spawned eggs, and larvae were collected from a river in eastern Kochi Prefecture, Shikoku Island, Japan, and a natural spawning ground adjacent to the river. Mating behavior was observed 15 times at night, and distinguished into four stages: phase 1, tracking; phase 2, approaching; phase 3, amplexus; and phase 4, spawning. Egg diameters after water absorption were 2.1–2.3 mm, the spherical, demersal eggs having a light-yellow yolk, no oil droplets, and slight viscosity. Newly hatched larvae [3.3–4.9 mm in total length (TL)] had 46 (32 + 14) myomeres, two pairs of outer gill filaments on the cheek, and melanophores on the head. Notochord flexion started at 6.0–7.2 mm TL (wild individuals at 6.0–6.3 mm TL) and was completed at 8.8 mm TL (6.6 mm TL). The formation of membranous fins and full fin-ray complements were attained in the fin order pectoral, caudal, dorsal, anal, and pelvic, and caudal, dorsal, anal, pectoral, and pelvic, respectively. Some individuals (7.0–8.0 mm TL at the flexion stage) had free neuromasts, each with a short cupula, laterally on the caudal region. In addition, following the postflexion stage, some morphological differences between artificially bred and wild individuals were observed but could not be quantified due to the small sample size.
著者
日本医学教育学会 卒後・専門教育委員会 安井 浩樹 青松 棟吉 石原 慎 小西 靖彦 清水 貴子 高橋 弘明 高橋 誠 中川 晋 望月 篤
出版者
日本医学教育学会
雑誌
医学教育 (ISSN:03869644)
巻号頁・発行日
vol.49, no.3, pp.207-211, 2018-06-25 (Released:2019-05-23)
参考文献数
16

地域医療研修は2004年に卒後臨床研修制度が開始されて以来, 必修分野として現在に至っている. 研修の現場は, へき地や遠隔地の診療所から市街の保健所まで多岐におよんでいる. 地域医療研修を充実させ, よりよい研修医を育てるためには, プログラム責任者の役割が重要である. 震災被災地での地域医療研修や, 北海道と鹿児島の研修医の交換研修などユニークな研修も行われている. 充実した地域医療研修は, 地域でもとめられ世界的にも注目される, 持続可能で新しい日本の保健医療システムをつくるための人材育成に不可欠である.