Latest News
Appreciation for native fish (2022)
Bigmouth buffalo’s negligible senescence (2021)
Bigmouth buffalo in MeatEater’s Das Boat (2020)
Bigmouth buffalo in National Geographic (2019)
Precision & Accuracy
Age analysis of fishes using otoliths (earstones): thin-sectioned otoliths and bomb radiocarbon age validation.
Focus
Ichthyology, otoliths, fisheries science, population demographics, natural history, longevity and senescence.
Publications
Lackmann et al. (2022). Canadian Journal of Fisheries and Aquatic Sciences. Bet-hedging bigmouth buffalo (Ictiobus cyprinellus) recruit episodically over a 127-year timeframe in Saskatchewan
Lackmann et al. (2022). Journal of Fish Biology. Otoliths suggest lifespans more than 30 years for free-living Bowfin Amia calva – implications for fisheries management in the bowfishing era
Lackmann et al. (2022). Environmental Biology of Fishes. Otolith allometry informs age and growth of long-lived Quillback Carpiodes cyprinus
Lackmann et al. (2021). Canadian Journal of Fisheries and Aquatic Sciences. Long-lived population demographics in a declining, vulnerable fishery-bigmouth buffalo (Ictiobus cyprinellus) of Jamestown Reservoir, North Dakota.
Lackmann et al. (2021). North American Journal of Fisheries Management. Thin-Sectioned Otoliths Reveal Sexual Dimorphism and a 10-Year Lifespan in the Endangered Pahrump Poolfish
Sauer et al. (2021). Scientific Reports. No evidence of physiological declines with age in an extremely long-lived fish.
Radford et al. (2021). Transactions of the American Fisheries Society. Comparison of Four Hard Structures including Otoliths for Estimating Age in Blue Suckers Cycleptus elongatus.
Lackmann et al. (2019). Communications Biology. Bigmouth Buffalo Ictiobus cyprinellus sets freshwater teleost record as improved age analysis reveals centenarian longevity
Publicity
National Geographic: 112-year-old fish has broken a longevity record
MPR: New appreciation for a Minnesota fish long considered junk
Star Tribune: Record catch: At 112 years, Minnesota fish is the oldest freshwater fish ever verified
Collaboration
Nicholls State University, Louisiana, GarLab – study of gar and other fishes
Eastern Illinois University – study of blue sucker
University of Saskatchewan and the Water Security Agency, Canada – study of bigmouth buffalo
University of North Texas – study of smallmouth buffalo
Contact
alackman@d.umn.edu
meclark@d.umn.edu
astrofish226@gmail.com
Specialties
Fish aging, longevity, age validation, fisheries, population biology, aquatic ecology, life history
Otolith Lab 