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Tuesday, January 30 • 6:00pm - 9:00pm
Poster Display. Age and Growth of Freshwater Drum in the Red River of the North, Manitoba

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AUTHORS: Connor J. Chance-Ossowski, Kansas Department of Wildlife, Parks, and Tourism; Stephen F. Siddons, Wyoming Fish and Game; Jonathan J. Spurgeon, University of Nebraska-Lincoln; Mark A. Pegg, University of Nebraska-Lincoln; Geoff M. Klein, Manitoba Conservation and Water Stewardship

ABSTRACT: The range of Freshwater Drum Aplodinotus grunniens, a native long-lived freshwater species of fish to Manitoba, encompasses the largest latitudinal gradient of any freshwater fish species. Freshwater Drum (N=147) were collected using hoop nets that consisted of seven, 0.9-m diameter hoops. Sampling effort was focused on the downstream portion of the Red River approximately 15-km downstream from the St. Andrews Dam in Lockport, Manitoba near the town of Selkirk, Manitoba. Otoliths were extracted in the field (Schneidervin and Hubert 1986), sectioned, burned and polished, and independently read by two readers in the lab. A consensus age was met and agreed upon by both readers. Size distribution of collected individual fish ranged from 250 mm to 605 mm and correlated ages ranged from 3 years old to 62 years old. Back-calculated lengths-at-ages were assigned for all individuals. Age and growth information collected in the Red River of the North, along with similar studies in lentic habitats of Freshwater Drum in Manitoba (Hardisty 2007), convey the longevity of northern gradient Freshwater Drum populations in comparison to their southern counterparts.  

Tuesday January 30, 2018 6:00pm - 9:00pm CST
Ballroom C & Foyer

Attendees (5)