Entry of migrating American eel leptocephali into the Gulf Stream system
Entry of migrating American eel leptocephali into the Gulf Stream system
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迁徙的美国细头鳗进入墨西哥湾流系统
DOI：
10.1007/bf02006141
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
J. McCleave
中科院分区：
文献类型：
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作者：
R. Kleckner;J. McCleave
对在佛罗里达海峡和北卡罗来纳州哈特拉斯角之间的佛罗里达洋流的四个横断面上收集的美国鳗鱼（Anguilla rostrata）leptocephali 的丰度、大小和深度分布进行了检查，以评估进入墨西哥湾流系统的两条洄游路线的相对重要性。佛罗里达海峡以北的佛罗里达洋流中收集到的细头鱼丰度增加了九倍，平均长度也增加了，这表明大多数细头鱼直接从马尾藻海进入湾流系统，而不是通过更南部的路线穿过巴哈马群岛。细头虫夜间集中在上层140m，白天集中在上层350m。白天收集的垂直范围较宽，无法对垂直分布进行更精确的估计。讨论了在西加勒比海收集的 8 个小型细头鱼（总长 11 至 17 毫米）与佛罗里达海峡捕获的细头鱼的起源。
Abundance, size and depth distributions of American eel(Anguilla rostrata)leptocephali collected in four transects across the Florida Current between the Straits of Florida and Cape Hatteras, North Carolina, were examined in order to assess the relative importance of two migration routes into the Gulf Stream system. A nine-fold increase in the abundance and an increase in the mean length of leptocephali collected in the Florida Current north of the Straits of Florida indicate that most leptocephali enter the Gulf Stream system directly from the Sargasso Sea rather than by a more southern route through the Bahama Islands. Leptocephali were concentrated in the upper 140 m at night and upper 350 m during the day. Wide vertical ranges in daytime collections precluded more refined estimation of vertical distribution. The collection of eight small leptocephali (11 to 17 mm total length) in the western Caribbean Sea is discussed in relation to the origin of leptocephali taken in the Straits of Florida.