Galbraith H S, Blakeslee C J, Schmucker A K, Johnson N S, Hansen M J, Li W
U.S. Geological Survey Leetown Science Center, Northern Appalachian Research Laboratory, Wellsboro, PA 16901, U.S.A.
Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, U.S.A.
J Fish Biol. 2017 Jan;90(1):384-395. doi: 10.1111/jfb.13190. Epub 2016 Oct 28.
The present study investigated the potential role of conspecific chemical cues in inland juvenile American eel Anguilla rostrata migrations by assessing glass eel and 1 year old elver affinities to elver washings, and elver affinity to adult yellow eel washings. In two-choice maze assays, glass eels were attracted to elver washings, but elvers were neither attracted to nor repulsed by multiple concentrations of elver washings or to yellow eel washings. These results suggest that A. rostrata responses to chemical cues may be life-stage dependent and that glass eels moving inland may use the odour of the previous year class as information to guide migration. The role of chemical cues and olfaction in eel migrations warrants further investigation as a potential restoration tool.
本研究通过评估玻璃鳗和1岁幼鳗对幼鳗冲洗液的亲和性，以及幼鳗对成年黄鳝冲洗液的亲和性，调查了同种化学信号在内陆幼年美洲鳗鲡（Anguilla rostrata）洄游中的潜在作用。在双选迷宫试验中，玻璃鳗被幼鳗冲洗液所吸引，但幼鳗对多种浓度的幼鳗冲洗液或黄鳝冲洗液既无吸引反应也无排斥反应。这些结果表明，美洲鳗鲡对化学信号的反应可能依赖于生命阶段，并且向内陆洄游的玻璃鳗可能利用上一年龄组的气味作为引导洄游的信息。化学信号和嗅觉在鳗鱼洄游中的作用作为一种潜在的恢复工具值得进一步研究。
