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10. Fig. S1 Abiotic factors (water temperature, electric conductivity (EC), and precipitation) at each survey station in the Shigo-gawa stream during downstream surveys. Precipitation was observed at Nara Meteorological Observatory. Table S1. Environmental variables (mean ± 1 SD) of each sampling site. The values in parentheses are sample sizes. from Distribution and drift dispersal dynamics of a caddisfly grazer in response to resource abundance and its ontogeny

Author

Katano, Izumi, Hiromune Mitsuhashi, Doi, Hideyuki, Isobe, Yu, and Oishi, Tadashi

Subjects
animal structures, fungi
Abstract

Stream grazers have a major impact on food web structure and the productivity of stream ecosystems; however, studies on the longitudinal (upstream versus downstream) and temporal changes in their drift dynamics and resulting distributions remain limited. Here, we investigated the longitudinal and temporal distributions and drift propensity of a trichopteran grazer, the caddisfly, Micrasema quadriloba, during its life cycle in a Japanese stream. The distribution of larvae significantly shifted downstream during the fifth instar larval stage during late winter; with periphyton abundance (i.e. their food source) showing similar shifts downstream. Therefore, our results show that the drift dispersal the caddisfly occurs in response to decline in available food resources (i.e. food-resource scarcity) and an increase in food requirements by growing individuals. Furthermore, our results show that this observed longitudinal shift in larval distribution varies through their life cycle, because the drift dispersal of fifth instar larvae was greater than that of immature larvae. The correlation between periphyton abundance and drift propensity of fourth instar larvae was not statistically significant, whereas that of fifth instar larvae was significantly negative. In conclusion, we detected an ontogenetic shift in drift propensity, which might explain the longitudinal and temporal distributions of this species.

Published
2017
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17. Systematic comparisons between broken symmetry and symmetry-adapted approaches to transition states by chemical indices: a case study of the Diels-Alder reactions

Author

Hiroshi Isobe; Yu Takano, Yasutaka Kitagawa, Liebman, Joel F.Kawakami; Syusuke Yamanaka, Kizashi Yamaguchi, and K. N. Houk

Subjects
Transition state (Chemistry) -- Comparative analysis, Diels-Alder reaction -- Analysis, Chemicals, plastics and rubber industries
Abstract

Systematic comparisons between broken symmetry (BS) and symmetry-adapted (SA) approaches to transition states were carried out using chemical indices using the occupation numbers of natural orbitals by both BS and SA methods. The computational results for the Diels-Alder and the core rearrangement reactions have indicated that the current procedures are promising for pericyclic reactions in general.

Published
2003

18. Reports on far infrared survey observation by Japan-India collaboration and the next project

Author

Shibai, Hiroshi, Kawada, Mitsunobu, Watabe, Toyoki, Teshima, Takafumi, Abe, Hiroshi, Sakurai, Masaaki, Yoshito, Tomoaki, Isobe, Yu, Taneda, Go, and Honda, Makoto

Subjects
infrared telescope, CCD camera, S/N ratio, star camera, 干渉法, attitude control, 気球, 前置増幅器, 赤外線望遠鏡, 姿勢制御, interferometry, CCDカメラ, preamplifier, S/N比, スターカメラ, balloon
Abstract

資料番号: AA0046651024

Published
2004

19. Periodontitis and Porphyromonas gingivalis in Preclinical Stage of Arthritis Patients.

Author

60512845, 10646376, 60610459, 50402920, 90229138, Hashimoto, Motomu, Yamazaki, Toru, Hamaguchi, Masahide, Morimoto, Takeshi, Yamori, Masashi, Asai, Keita, Isobe, Yu, Furu, Moritoshi, Ito, Hiromu, Fujii, Takao, Terao, Chikashi, Mori, Masato, Matsuo, Takashi, Yoshitomi, Hiroyuki, Yamamoto, Keiichi, Yamamoto, Wataru, Bessho, Kazuhisa, Mimori, Tsuneyo, 60512845, 10646376, 60610459, 50402920, 90229138, Hashimoto, Motomu, Yamazaki, Toru, Hamaguchi, Masahide, Morimoto, Takeshi, Yamori, Masashi, Asai, Keita, Isobe, Yu, Furu, Moritoshi, Ito, Hiromu, Fujii, Takao, Terao, Chikashi, Mori, Masato, Matsuo, Takashi, Yoshitomi, Hiroyuki, Yamamoto, Keiichi, Yamamoto, Wataru, Bessho, Kazuhisa, and Mimori, Tsuneyo

Abstract

To determine whether the presence of periodontitis (PD) and Porphyromonas gingivalis (Pg) in the subgingival biofilm associates with the development of rheumatoid arthritis (RA) in treatment naïve preclinical stage of arthritis patients.

Published
2015

20. Periodontitis and Porphyromonas gingivalis in Preclinical Stage of Arthritis Patients

Author

Hashimoto, Motomu, primary, Yamazaki, Toru, additional, Hamaguchi, Masahide, additional, Morimoto, Takeshi, additional, Yamori, Masashi, additional, Asai, Keita, additional, Isobe, Yu, additional, Furu, Moritoshi, additional, Ito, Hiromu, additional, Fujii, Takao, additional, Terao, Chikashi, additional, Mori, Masato, additional, Matsuo, Takashi, additional, Yoshitomi, Hiroyuki, additional, Yamamoto, Keiichi, additional, Yamamoto, Wataru, additional, Bessho, Kazuhisa, additional, and Mimori, Tsuneyo, additional

Published
2015
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31. Untitled.

Author

Wada, Ayako, Isobe, Yu, Yamaguchi, Susumu, Yamaoka, Ryohei, and Ozaki, Mamiko

Subjects
*LYCAENIDAE, *CARPENTER ants, *CATERPILLARS, *GLUCOSE, *GLYCINE, *SUGAR receptors, *AMINO acids, *UMAMI (Taste)
Abstract

The lycaenid butterfly, Niphanda fusca, has a parasitic relationship with its host ant, Camponotus japonicus: the caterpillars may use chemical mimicry to enter the ant nest where they are fed mouth-to-mouth by the adult ants until pupation. Nevertheless, larvae offer their host ants a nutritious secretion that contains 160 mM glucose and 43 mM glycine. Using glucose and glycine mixture as artificial secretions, we investigated the gustatory effect of glucose and/or glycine on the ants. Glycine induced neither feeding behavior nor gustatory response in the ants if its concentration was <500 mM. In the presence of glycine at the concentration in the secretion, however, the ants improved their preference to glucose, and the sugar receptor cell exhibited electrophysiological enhancement of response to glucose in a glycine-concentration-dependent manner. By adding glycine to glucose in their secretions, therefore, the butterfly larvae can manipulate the gustatory sense of the ants. The alluring taste of `glycine-flavored glucose' could motivate the host ants to feed the larvae and thereby receive the secretions as a reward. The taste enhancement created by the combination of sugar and amino acid may play a role in the evolution of the parasitic relationships of these insects. The taste-enhancing effect appears to be analogous to taste enhancement by `umami' substances in humans. [ABSTRACT FROM AUTHOR]

Published
2001

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