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Observations of Hatchery‐Reared Rio Grande Silvery Minnow Using a Fishway
Author(s) -
Archdeacon Thomas P.,
Remshardt W. Jason
Publication year - 2012
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1080/02755947.2012.681013
Subject(s) - minnow , fish <actinopterygii> , upstream (networking) , downstream (manufacturing) , endangered species , hatchery , fishery , environmental science , geography , habitat , biology , ecology , engineering , operations management , telecommunications
We designed a study to determine if Rio Grande silvery minnow Hybognathus amarus , an endangered species, would use an instream, rock channel fishway on the Rio Grande near Albuquerque, New Mexico. We implanted 6,657 Rio Grande silvery minnow with passive integrated transponders and used a passive scanning station with two antennas located within the fishway to document movements from seven release locations, up to 19.7 km upstream and 13.5 km downstream of the diversion dam. Between 11 March and 21 August 2011, 243 individuals were detected (3.7% of all fish released), with 74.1% fish being detected from upstream release sites and 25.9% from downstream release sites. We determined 14 Rio Grande silvery minnow successfully ascended the fishway, and an additional 20 fish from downstream release locations were detected on the upstream antenna only, inferring passage. We conclude Rio Grande silvery minnow can use appropriately constructed fishways. Received October 17, 2011; accepted March 21, 2012