Oxygen Store and Diving Capacity of Rhinoceros Auklet<i>Cerorhinca monocerata</i>

DOI 被引用文献1件 参考文献34件

書誌事項

タイトル別名
  • Oxygen store and diving capacity of Rhinoceros Auklet Cerorhinca monocerata

説明

Alcids dive longer than are predicted by their body size alone, but the physiological mechanisms that explain their excellent diving capabilities are poorly understood. In this study, we estimated the oxygen stores of Rhinoceros Auklets Cerorhinca monocerata, medium-sized alcids that attained depths down to 62 m within 2.5 min. Hematocrit was 43.9±2.8%, hemoglobin concentration was 17.2±4.6 g·100 ml-1, and blood volume was 12.7±1.9% of their body mass. Myoglobin concentration in breast muscle (1.8±0.3 g·100 g-1) was higher than that in leg muscle (1.2±0.2 g·100 g-1). Rhinoceros Auklets have higher blood volume, hemoglobin and myoglobin concentrations, as do other flying/diving seabirds (other alcids and cormorants), than flying/non-diving seabirds (terns and kittiwakes). The oxygen store of Rhinoceros Auklets was estimated at 54.5 ml·kg-1. Using the average oxygen consumption rate of diving seabirds (1.01 ml·s-1·kg-1), we calculated their theoretical aerobic dive limit (TADL) as 53.9 s. Nearly half of their dives (47.2%) exceeded their TADL, because an overestimation of their oxygen consumption rate during diving resulted in an underestimation of TADL.

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詳細情報 詳細情報について

  • CRID
    1390282680167620608
  • NII論文ID
    130004934951
  • DOI
    10.2326/osj.10.27
  • ISSN
    27595897
    13470558
  • 本文言語コード
    en
  • 資料種別
    journal article
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
    • OpenAIRE
  • 抄録ライセンスフラグ
    使用不可

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