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Ecological Conditions Favoring Budding in Colonial Organisms under Environmental Disturbance

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Title: Ecological Conditions Favoring Budding in Colonial Organisms under Environmental Disturbance
Authors: Nakamaru, Mayuko Browse this author
Takada, Takenori Browse this author →KAKEN DB
Ohtsuki, Akiko Browse this author
Suzuki, Sayaki U. Browse this author
Miura, Kanan Browse this author
Tsuji, Kazuki Browse this author
Issue Date: 12-Mar-2014
Publisher: Public Library of Science
Journal Title: Plos One
Volume: 9
Issue: 3
Start Page: e91210
Publisher DOI: 10.1371/journal.pone.0091210
Abstract: Dispersal is a topic of great interest in ecology. Many organisms adopt one of two distinct dispersal tactics at reproduction: the production of small offspring that can disperse over long distances (such as seeds and spawned eggs), or budding. The latter is observed in some colonial organisms, such as clonal plants, corals and ants, in which (super) organisms split their body into components of relatively large size that disperse to a short distance. Contrary to the common dispersal viewpoint, short-dispersal colonial organisms often flourish even in environments with frequent disturbances. In this paper, we investigate the conditions that favor budding over long-distance dispersal of small offspring, focusing on the life history of the colony growth and the colony division ratio. These conditions are the relatively high mortality of very small colonies, logistic growth, the ability of dispersers to peacefully seek and settle unoccupied spaces, and small spatial scale of environmental disturbance. If these conditions hold, budding is advantageous even when environmental disturbance is frequent. These results suggest that the demography or life history of the colony underlies the behaviors of the colonial organisms.
Rights: © 2014 Nakamaru et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Type: article
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 高田 壮則

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