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Your search keyword '"Sakamoto, Takuma"' showing total 11 results
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11 results on '"Sakamoto, Takuma"'

4. De novo transcriptome analysis for examination of the nutrition metabolic system related to the evolutionary process through which stick insects gain the ability of flight (Phasmatodea)

Author

Sakamoto, Takuma, primary, Sasaki, Shunya, additional, Yamaguchi, Nobuki, additional, Nakano, Miho, additional, Sato, Hiroki, additional, Iwabuchi, Kikuo, additional, Tabunoki, Hiroko, additional, Simpson, Richard J., additional, and Bono, Hidemasa, additional

Published
2021
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5. Author Correction: Construction of TUATinsecta database that integrated plant and insect database for screening phytophagous insect metabolic products with medicinal potential

Author

Nakane, Wakana, primary, Nakamura, Hisashi, additional, Nakazato, Takeru, additional, Kaminaga, Natsuki, additional, Nakano, Miho, additional, Sakamoto, Takuma, additional, Nishiko, Maaya, additional, Bono, Hidemasa, additional, Ogiwara, Isao, additional, Kitano, Yoshikazu, additional, Iwabuchi, Kikuo, additional, Kinoshita, Kaoru, additional, Simpson, Richard J., additional, and Tabunoki, Hiroko, additional

Published
2021
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6. Construction of TUATinsecta database that integrated plant and insect database for screening phytophagous insect metabolic products with medicinal potential

Author

Nakane, Wakana, primary, Nakamura, Hisashi, additional, Nakazato, Takeru, additional, Kaminaga, Natsuki, additional, Nakano, Miho, additional, Sakamoto, Takuma, additional, Nishiko, Maaya, additional, Bono, Hidemasa, additional, Ogiwara, Isao, additional, Kitano, Yoshikazu, additional, Iwabuchi, Kikuo, additional, Kinoshita, Kaoru, additional, Simpson, Richard J., additional, and Tabunoki, Hiroko, additional

Published
2020
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8. Mass killing by female soldier larvae is adaptive for the killed male larvae in a polyembryonic wasp

Author

00648280, 40379821, Otsuki, Takahiro, Uka, Daisuke, Ito, Hiromu, Ichinose, Genki, Nii, Momoka, Morita, Satoru, Sakamoto, Takuma, Nishiko, Maaya, Tabunoki, Hiroko, Kobayashi, Kazuya, Matsuura, Kenji, Yoshimura, Jin, Iwabuchi, Kikuo, 00648280, 40379821, Otsuki, Takahiro, Uka, Daisuke, Ito, Hiromu, Ichinose, Genki, Nii, Momoka, Morita, Satoru, Sakamoto, Takuma, Nishiko, Maaya, Tabunoki, Hiroko, Kobayashi, Kazuya, Matsuura, Kenji, Yoshimura, Jin, and Iwabuchi, Kikuo

Abstract

Self-sacrifice is very rare among organisms. Here, we report a new and astonishing case of adaptive self-sacrifice in a polyembryonic parasitic wasp, Copidosoma floridanum. This wasp is unique in terms of its larval cloning and soldier larvae. Male clone larvae have been found to be killed by female soldier larvae, which suggests intersexual conflict between male and female larvae. However, we show here that mass killing is adaptive to all the killed males as well as the female soldiers that have conducted the killing because the killing increases their indirect fitness by promoting the reproduction of their clone sibs. We construct a simple model that shows that the optimal number of surviving males for both male and female larvae is very small but not zero. We then compare this prediction with the field data. These data agree quite well with the model predictions, showing an optimal killing rate of approximately 94–98% of the males in a mixed brood. The underlying mechanism of this mass kill is almost identical to the local competition for mates that occurs in other wasp species. The maternal control of the sex ratio during oviposition, which is well known in other hymenopterans, is impossible in this polyembryonic wasp. Thus, this mass kill is necessary to maximize the fitness of the female killers and male victims, which can be seen as an analogy of programmed cell death in multicellular organisms.

Published
2019

9. Mass killing by female soldier larvae is adaptive for the killed male larvae in a polyembryonic wasp

Author

Otsuki, Takahiro, primary, Uka, Daisuke, additional, Ito, Hiromu, additional, Ichinose, Genki, additional, Nii, Momoka, additional, Morita, Satoru, additional, Sakamoto, Takuma, additional, Nishiko, Maaya, additional, Tabunoki, Hiroko, additional, Kobayashi, Kazuya, additional, Matsuura, Kenji, additional, Iwabuchi, Kikuo, additional, and Yoshimura, Jin, additional

Published
2019
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