著者
加藤 隆 鈴木 博
出版者
横浜国立大学教育学部附属理科教育実習施設
雑誌
横浜国立大学教育学部理科教育実習施設研究報告
巻号頁・発行日
vol.8, pp.77-97, 1992-03-27

According to MIYAKE (1978, 1982), there have been three species of the mole crabs, Hippa adactyla FABRICIUS, H. truncatifrons (MIERS) and H. pacifica (DANA) (Hippidae, Anomura, Decapoda, Crustacea) in the Japanese waters. Only one species, H. adactyla have been known from Sagami Bay. In the course of this study, the latter species, H. truncatifrons and H. pacifica were newly found from Sagami Bay, and H. truncatifrons predominates among the three species throughout the studied areas. In this study, the authors described and illustrated their distribution, variation of the body, colourations, growth rate, and feeding and mating habits. The authors also studies complete larval development of H. truncatifron. The larvae are reared in the laboratory and passed through five zoeal and one glaucothoe stages and reached to the first crab stage. All the larval and the first crab stages are described and illustrated herein, and some brief comparision and discussion with other related species are also given.
著者
加藤 一夫 鈴木 博
出版者
横浜国立大学教育学部附属理科教育実習施設
雑誌
横浜国立大学教育学部理科教育実習施設研究報告
巻号頁・発行日
no.2, pp.1-8, 1985-03-25

ヒライソガニにおける胸脚除去に伴う脱皮間期の短縮は,脚除去の数の増加にしたがって顕著となる。これはアカテガニにおける研究結果と類似する。多くの脚除去は第1回目の脱皮に続く第2回目の脱皮間期の短縮も誘発する傾向が認められる。脱皮による体長の増加率は,対象では17.5%であったが,脚除去数に伴ってその値は減少し,すべての胸脚を除去した状態ではその値は1%であった。
著者
佐藤 嘉彦 田中 利幸
出版者
横浜国立大学教育学部附属理科教育実習施設
雑誌
横浜国立大学教育学部理科教育実習施設研究報告
巻号頁・発行日
no.6, pp.1-9, 1990-03-25

INOUE and OSATAKE (1988) have recently developed a new tert.-butyl alcohol freeze-drying method for drying biological specimens of scanning electron microscope. Their method has come into wide use recently for drying zoological specimens. The specimens dried acccording to the new method seem to be in no way inferior to the critical-point dried specimens. But there have hardly any accomplishments with regard to the botanical specimens. So, we have intended to compare the botanical specimens dried by the new method with the critical-point dried specimens. And we could take the most exquisite photographs from the specimens produced according to the following procedures: (1) double fixation by 2.5% glutaraldehyde and 1% osmium tetroxide, each buffered at pH 7.2-7.4 with 0.1M phosphate buffer. (2) dehydration by tert. -butyl alcohol series (Tab. 1). (3) replacement with pure tert. -butyl alcohol. (4) freeze-drying with tert. -butyl alcohol (INOUE & OSATAKE 1988). The drying method is expected to become greatly available in future for drying the botanical specimens for scanning electron microscopy, although some further improvements are necessary to realized satisfactory and stable results from almost all botanical materials.
著者
佐藤 嘉彦
出版者
横浜国立大学教育学部附属理科教育実習施設
雑誌
横浜国立大学教育学部理科教育実習施設研究報告
巻号頁・発行日
vol.5, pp.15-25, 1989-03-25

Leaves of five forma of Hydrangea macrophylla group listed below were anatomically investigated and many variations were found in the epidermal and mesophyll tissue. (1) Hydrangea macrophylla var. macrophylla forma macrophylla (2) H. macrophylla var. macrophylla forma normalis (3) H. macrophylla var. megacarpa forma megacarpa (4) H. macrophylla var. acuminata forma acuminata (5) H. macrophylla var. angusta forma angusta There was no difference in the anatomical characters between two forma of H. macrophylla var. macrophylla. Their leaves were composed of one-layered epidermis, in which the outline of the cell walls was straight, and ten or more cell-layers of the mesophyll, of which adaxial two-three layers were palisadal. In other three forma, also, the epidermis was one layer of cells, but the outline of cell walls was curved inwardly or outwardly. The palisade tissue was composed of only one layer of cells. It is known that section Hydrangea possesses unicellular hairs with a hillock-like structure at their base (STERN, 1978). Besides the hairs, unicellular hairs without a hillock-like structure at their base were found. These variations are fully expected to have an important significance, when an intra-specific relationship of H. macrophylla or/and an inter-specific one of the genus Hydrangea will be discussed in future.
著者
中村 光一郎
出版者
横浜国立大学教育学部附属理科教育実習施設
雑誌
横浜国立大学教育学部理科教育実習施設研究報告
巻号頁・発行日
vol.6, pp.19-33, 1990-03-25

1989年7月、真鶴理科教育実習施設付近の海岸で、ウミグモ類の採集を行ない、6属8種を発見した。将来も採集を重ねれば更に多くの種類が採集されることが予想されるので、今回採集された種の特徴、分布とともに、ウミグモ類の外部形態の概要、科以下の検索表をまとめ、今後の同定の参考にしていただきたい。今回の採集の機会を与えてくださった、生物学教室蒲生重男教授、海藻類の同定をしていただいた筑波大学下田臨海実験センター横浜康継教授に謝意を表します。