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タイトル: | Gastrointestinal passage time of seeds ingested by captive Japanese martens Martes melampus |
著者: | Tsuji, Yamato ![]() ![]() Shiraishi, Toshiaki Miura, Sayako |
著者名の別形: | 辻, 大和 |
キーワード: | Feeding experiments Martes melampus Physical characteristics Seed dispersal |
発行日: | Oct-2011 |
出版者: | Springer |
誌名: | Acta Theriologica |
巻: | 56 |
号: | 4 |
開始ページ: | 353 |
終了ページ: | 357 |
抄録: | The time it takes for ingested seeds to pass through the gut of animals is an important aspect of endozoochorous seed dispersal because it influences seed dispersal distance. Variations in the physical characteristics of seeds, such as their weight, volume, and specific gravity, can affect their movement through the gastrointestinal system of a given animal. We conducted feeding experiments with captive Japanese martens, Martes melampus (n = 4), at Toyama Municipal Family Park Zoo, central Japan to examine the effects of the physical characteristics of seeds on their passage times. The mean (±SD) transit time, mean retention time, and time of last appearance of four different types of commercial seeds were 2.6 ± 0.3 h (range 0.6–5.4), 9.7 ± 1.1 h (3.8–17.3), and 23.8 ± 3.1 h (12.2–51.8), respectively. All of these values are greater than those found during previous experiments conducted with mustelids. Similar to previous studies, however, none of these passage time variables was correlated with the physical characteristics of seeds. Our results thus indicate that martens disperse seeds of different plant species, whose size, volume, and specific gravity all fall within the range of those used in the present study, from parent plants at similar distances. |
著作権等: | The final publication is available at www.springerlink.com この論文は著者最終稿です。内容が印刷版と異なることがありますので、引用の際には出版社版をご確認ご利用ください。This is the Accepted Author Manuscript. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/148239 |
DOI(出版社版): | 10.1007/s13364-011-0034-0 |
出現コレクション: | 学術雑誌掲載論文等 |
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