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タイトル
  • en Consistent individual variations in aggressiveness and a behavioral syndrome across breeding contexts in different environments in the Black-tailed Gull
作成者
    • en Kazama, Kentaro
    • en Niizuma, Yasuaki
アクセス権 open access
権利情報
  • en The final publication is available at www.springerlink.com
主題
  • Other en Behavioral syndrome
  • Other en Aggressiveness
  • Other en Animal personality
  • Other en Extra-pair copulation
  • Other en Parental care
  • NDC 468
内容注記
  • Abstract en Individual behaviors of animals do not evolve separately but do so in association with other behaviors caused by single shared genetic or physiological constraints and/or favored by selection. Measuring behavioral syndromes which are suites of correlated behaviors across different contexts, therefore, provides better understanding of the adaptive significance of variations in behaviors. However, studies that have examined the behavioral syndrome in wild animal populations in changing environments are in the minority. We measured behavioral syndrome among anti-predator nest defense, territorial defense, chick-provisioning, and mating behavior of male Black-tailed Gulls Larus crassirostris in two successive years with different conspecific territorial intrusion risks and food conditions. Males with high levels of anti-predator nest defense (aggressive anti-predator defenders) against the decoy of crows (an egg-predator) defended their territory against conspecific intruders more frequently than did other males (non-aggressive anti-predator defenders) independently of the risk of intrusion. Aggressive anti-predator defenders also fed their chicks more frequently than non-aggressive males, but only in the year of lower food availability. Taken together, this indicates that males show consistent aggressiveness regardless of breeding context (anti-predator and territorial defense), but they can regulate food provisioning according to food availability.
出版者 en Springer Japan
日付
    Issued2012-05
言語
  • eng
資源タイプ journal article
出版タイプ AM
資源識別子 HDL http://hdl.handle.net/2115/49227
関連
  • isVersionOf DOI https://doi.org/10.1007/s10164-011-0324-7
収録誌情報
    • PISSN 0289-0771
      • en Journal of Ethology
      • 30 2 開始ページ279 終了ページ288
ファイル
コンテンツ更新日時 2023-07-26