ENGLISH トップ 所長挨拶 概要 教員一覧 研究分野・施設 共同利用・共同研究 大型プロジェクト 国際集会 教育,入試 広報,公開行事,年報 新着論文,出版 教員,職員公募 国際共同事業 霊長類研究基金 リンク アクセス HANDBOOK FOR INTERNATIONAL RESEARCHERS Map of Inuyama サイトマップ
トピックス
コラム・連載 質疑応答コーナー ボノボ チンパンジー「アイ」 頭蓋骨画像データベース 霊長類学文献データベース サル類の飼育管理及び使用に関する指針 Study material catalogue/database 野生霊長類研究ガイドライン 霊長類ゲノムデータベース 写真アーカイヴ ビデオアーカイヴ

京都大学霊長類研究所
郵便番号484-8506
愛知県犬山市官林
TEL. 0568-63-0567(大代表)
FAX. 0568-63-0085

本ホーム・ページの内容の
無断転写を禁止します。
Copyright (c)
Primate Research Institute,
Kyoto University All rights reserved.


お問い合わせ

English

Hydrodynamic handicaps and organizational complexity in the foraging behavior of two free-ranging penguin species
Meyer X,* MacIntosh AJJ*, Kato A, Chiaradia A, Ropert-Coudert Y
概要

Background

Animal movement exhibits self-similarity across a range of both spatial and temporal scales reminiscent of statistical fractals. Stressors are known to induce changes in these statistical patterns of behavior, although the direction and interpretation of such changes are not always clear. We examined whether the imposition of known hydrodynamic disruptors, bio-logging devices and flipper bands, induces changes in the temporal organization (complexity) of foraging sequences in two penguin species, little penguins (Eudyptula minor) and Ad?lie penguins (Pygoscelis adeliae).

Results

Detrended fluctuation analysis showed that foraging sequences produced by little penguins carrying larger loggers were more complex, i.e., were more erratic tending toward greater stochasticity, than those carrying smaller loggers. However, logger size did not affect complexity in foraging sequences of Ad?lie penguins. Logger position was associated only weakly with altered complexity in little penguins, with individuals carrying loggers in the middle of their backs displaying slightly more complex dive sequences than those carrying loggers lower on their backs. Finally, despite their known negative effects on penguin fitness, flipper bands were not associated with dive sequence complexity in little penguins.

Conclusions

Despite that externally attached devices can disrupt certain behavioral parameters in diving seabirds, we found mixed evidence in support of the hypothesis that such devices significantly disrupt the time-structured organizational properties of foraging sequences in the two penguin species investigated. However, smaller species carrying larger loggers, and perhaps those positioned higher on their backs, may experience an added element of noise in their behavioral sequences that may indicate a departure from foraging behavior observed under normal, unburdened conditions.
書誌情報

*Animal Biotelemetry *3:25
doi: 10.1186/s40317-015-0061-8
http://www.animalbiotelemetry.com/content/3/1/25

 

2015/08/13 Primate Research Institute