著者

藤本 恵子 池本 敦 FUJIMOTO Keiko IKEMOTO Atsushi

出版者

秋田大学教育文化学部

雑誌

秋田大学教育文化学部研究紀要 自然科学 (ISSN:24334960)

巻号頁・発行日

no.75, pp.1-11, 2020-03-01

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The edible wild plants were anciently important food materials as sources of nutrients such as vitamins but their utilization has been decreasing in the present day. To elucidate the utilization of edible wild plants in Akita prefecture of Japan, we performed questionary survey targeting at the inhabitants of the wide age age group. Elatostema umbellatum (“Mizu”), Osmunda japonica (Asian royal fern, "Zenmai") and Oenanthe javanica, (Java waterdropwort. “Seri”) were eaten well most. Laportea cuspidate (“Aiko”), Parasenecio hastatus (“Honna”) and Parasenecio delphiniifolius (“Shidoke”) were utilized well in Tohoku region and their rate of experiences of eating exceeded 70%. It is observed that Chenopodium album (white goosefoot, “Shiroza”) grows on the roadside in Japan, but 82.4% of the inhabitants did not know that they were edible. We also performed questionary survey in Bangladesh, where Chenopodium album is cultivated and eaten well. In our investigation, all Bangladeshi had the experiences of eating and it was used as a materials of the traditional cuisine such as sauteed vegetables, bhorta and curry. The values of Chenopodium album as foods in emergency and its availabilities as the teaching materials for safeguard against disaster were also discussed.

著者

KAWAMATA Kunihiko SUZUKI Kazushige

出版者

秋田大学教育文化学部

雑誌

秋田大学教育文化学部研究紀要 自然科学 = Memoirs of Faculty of Education and Human Studies, Akita University. Natural sciences (ISSN:24334960)

巻号頁・発行日

vol.73, pp.23-27, 2018-02-23

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In the present study, the fluctuations in the sex ratio of the ostracod Vargula hilgendorfii (Müller, 1890) were studied. Specimens of stage-5 juveniles (last instar) were collected from Akita Port every 5 or 7 days and were reared until they reached maturity. The sex of the adults was identified under a stereomicroscope to determine the sex ratio. The sex ratio varied among collection dates, whereas at the beginning of the generation, the sex ratio was 1:1, a female-bias was apparent in the middle of the generation. These fluctuations were also observed in the second generation. This same sex ratio fluctuation was also observed in 2010 and 2011. These results revealed that the sex ratio varied among collection dates and suggested that sex determination is related to some specific environmental factors.