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Yellow‐stage American eel movements determined by microtagging and acoustic telemetry in the St Jean River watershed, Gaspé, Quebec, Canada
Author(s) -
Thibault I.,
Dodson J. J.,
Caron F.
Publication year - 2007
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2007.01584.x
Subject(s) - anguilla rostrata , estuary , biology , fishery , brackish water , telemetry , stage (stratigraphy) , population , oceanography , ecology , salinity , demography , paleontology , sociology , geology , engineering , aerospace engineering
The hypothesis that a part of the yellow American eel Anguilla rostrata sub‐population of the St Jean River in eastern Quebec feeds in the brackish environment during summer and returns to the river to overwinter was tested. Three years of microtagging and the acoustic tagging and tracking of 40 American eels demonstrated that a part of the downstream migrants exploited the estuary as a summer feeding area. Upstream movement of some microtagged American eels provided support for the hypothesis that a part of those American eels returned to the river to overwinter. In addition to the demonstration of amphidromous behaviour of yellow eels, the study revealed that American eels in the estuary were active at night but homed to specific daytime resting sites.