Migratory history of the giant mottled eel (Anguilla marmorata) in the Bonin Islands of Japan
Migratory history of the giant mottled eel (Anguilla marmorata) in the Bonin Islands of Japan
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DOI：
10.1111/j.1600-0633.2009.00385.x
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发表时间：
2010-03-01
影响因子：
1.8
通讯作者：
Arai, T.
中科院分区：
文献类型：
--
作者：
Chino, N.;Arai, T.
为了阐明日本小笠原群岛斑鳗鲡（Anguillamarmorata）的迁徙历史和栖息地利用，采用X射线电子探针分析了其耳石中锶（Sr）和钙（Ca）的含量。X射线强度图和线分析显示了三种波动模式：（i）淡水停留，（ii）连续停留在微咸水中，以及（iii）补充后停留在淡水中，同时返回微咸水。在此基础上，结合前人的研究，对中华绒螯蟹的迁飞行为进行了初步探讨。marmorata似乎不同，在每个栖息地之间和种内竞争的反应。结果表明，A.花斑蝶的迁徙方式灵活，能够适应不同的生境和盐度。
In order to elucidate the migratory history and habitat use of the giant mottled eel Anguilla marmorata, in the Bonin Islands of Japan, strontium (Sr) and calcium (Ca) concentrations in otoliths were examined by X-ray electron microprobe analysis. The X-ray intensity map and line analyses showed three fluctuation patterns: (i) freshwater residence, (ii) continuous residence in brackish water, and (iii) residence in freshwater after recruitment, while returning to brackish water. Based on these results and previous studies, the migratory behaviours of A. marmorata appear to differ in each habitat in response to inter- and intra-specific competition. The results suggest that A. marmorata has a flexible pattern of migration, with an ability to adapt to various habitats and salinities.