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首页> 外文期刊>Southeastern naturalist >Evaluating the Efficiency of Flushed Stomach-tube Lavage for Collecting Stomach Contents from Dogfish Sharks
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Evaluating the Efficiency of Flushed Stomach-tube Lavage for Collecting Stomach Contents from Dogfish Sharks

机译：评估冲洗的胃管灌洗从Dog鱼鲨鱼中收集胃内容物的效率

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摘要

Concern over the use of lethal techniques to collect basic biological data from sharks has necessitated the development of nonlethal methods of data collection. We evaluated the nonlethal method of removing stomach contents using acrylic tubes. Stomach contents of Spiny Dogfish (Squalus acanthias) captured with bottom trawls and longlines were collected using acrylic tubes flushed with seawater. The largest tube used during the trawl survey was 30 mm in diameter, while a larger tube (37 mm in diameter) was used during longline sampling due to catches of larger dogfish. The average efficiency of stomach content removal was 79.5% overall, and improved to 93% with the addition of the larger tube. Selection of a tube with a diameter 10–20 mm less than mouth width can be reasonably expected to recover over 90% of stomach contents. Stomachtube lavage is a useful and efficient method for nonlethal sampling of stomach contents from Spiny Dogfish, and perhaps other small sharks.
机译：由于担心使用致死技术从鲨鱼中收集基本生物学数据，因此必须发展非致命性的数据收集方法。我们评估了使用丙烯酸管去除胃内容物的非致命方法。用用海水冲洗的丙烯酸管收集用底拖网和延绳钓捕获的刺Spin鱼（Squalus acanthias）的胃内容物。拖网调查期间使用的最大试管直径为30毫米，而延绳钓采样中使用较大的试管（直径37毫米），原因是捕获了较大的dog鱼。总体而言，胃内容物去除的平均效率为79.5％，并通过增加较大的试管而提高至93％。可以合理预期，选择直径小于口径10–20 mm的试管可恢复90％以上的胃内容物。胃管灌洗是一种有用的，有效的方法，可以对多刺豚鱼以及其他小鲨鱼的胃内容物进行非致命采样。

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