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Feedback between size balance and consumption strongly affects the consequences of hatching phenology in size-dependent predator-prey interactions
http://hdl.handle.net/10252/00005874
http://hdl.handle.net/10252/0000587430c74e6a-9654-4388-8bb8-8b8add6e9b48
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
OIKOS-124-2 (1.3 MB)
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| Item type | プレプリント / Preprint(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-03-18 | |||||
| タイトル | ||||||
| タイトル | Feedback between size balance and consumption strongly affects the consequences of hatching phenology in size-dependent predator-prey interactions | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_1843 | |||||
| 資源タイプ | other | |||||
| 著者 |
Katayama, Noboru
× Katayama, Noboru× Nosaka, Megumi× Kishida, Osamu |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 32637 | |||||
| 姓名 | 片山, 昇 | |||||
| 言語 | ja | |||||
| bibliographic_information |
en : OIKOS 巻 124, 号 2, p. 225-234, 発行日 2015-02 |
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| 出版者 | ||||||
| 出版者 | Blackwell Publishing | |||||
| 言語 | en | |||||
| 出版社版URI | ||||||
| 言語 | ja | |||||
| 権利情報 | https://onlinelibrary.wiley.com/doi/abs/10.1111/oik.01662 | |||||
| 出版タイプ | ||||||
| 出版タイプ | AO | |||||
| 出版タイプResource | http://purl.org/coar/version/c_b1a7d7d4d402bcce | |||||
| 日本十進分類法 | ||||||
| 言語 | ja | |||||
| 主題Scheme | NDC | |||||
| 主題 | 460 | |||||
| NIIサブジェクト | ||||||
| 言語 | ja | |||||
| 主題Scheme | Other | |||||
| 主題 | 生物学 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In many size-dependent predator-prey systems, hatching phenology strongly affects predator-prey interaction outcomes. Early-hatched predators can easily consume prey when they first interact because they encounter smaller prey. However, this process by itself may be insufficient to explain all predator-prey interaction outcomes over the whole interaction period because the predator-prey size balance changes dynamically throughout their ontogeny. We hypothesized that hatching phenology influences predator-prey interactions via a feedback mechanism between the predator-prey size balance and prey consumption by predators. We experimentally tested this hypothesis in an amphibian predator-prey model system. Frog tadpoles (Rana pirica) were exposed to a predatory salamander larva (Hynobius retardatus) that had hatched 5, 12, 19, or 26 days after the frog tadpoles hatched. We investigated how the salamander hatch timing affected the dynamics of prey mortality, size changes of both predator and prey, and their subsequent life history (larval period and size at metamorphosis). The predator-prey size balance favoured earlier hatched salamanders, which just after hatching could successfully consume more frog tadpoles than later hatched salamanders. The early-hatched salamanders grew rapidly and their accelerated growth enabled them to maintain the predator-superior size balance; thus, th~y continued to exert strong predation pressure on the frog tadpoles in the subsequent period. Furthermore, frog tadpoles exposed to the early-hatched salamanders were larger at metamorphosis and had a longer larval period than other frog tadpoles. These results suggest that feedback between the predator-superior size balance and prey consumption is a critical mechanism that strongly affects the impacts of early hatching of predators in the short-term population dynamics and life history of the prey. Because consumption of large nutrient-rich prey items supports the growth of predators, a similar feedback mechanism may be common and have strong impacts on phenological shifts in size-dependent trophic relationships. | |||||
| 言語 | en | |||||
