Ichthyology, Aquatic Ecology, Conservation Biology
Centenarian bigmouth buffalo
Latest News
Bigmouth buffalo’s negligible senescence
Bigmouth buffalo in MeatEater’s Das Boat
Bigmouth buffalo in National Geographic.
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
- Fredrickson et al. (2021). Transactions of the American Fisheries Society. Non‐lethal fin clip model validation for stable isotope analysis of Spotted and Alligator Gar
- 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 Empetrichthys latos
- Sauer et al. (2021). Scientific Reports. No evidence of physiological declines with age in an extremely long-lived fish.
- 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.
- 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
- Daugherty et al. (2019). Otolith‐based age estimates of Alligator Gar assessed using bomb radiocarbon dating to greater than 60 years.
Publicity
Collaboration
- Nicholls State University, Louisiana, GarLab – aging of gar and other fishes
- Eastern Illinois University – aging of blue sucker
- University of Saskatchewan and the Water Security Agency, Canada – aging of bigmouth buffalo
- University of North Texas – aging of smallmouth buffalo
A Research Team
Contact
alackman@d.umn.edu
meclark@d.umn.edu
Specialties
Fish aging, longevity, age validation, fisheries, population biology, aquatic ecology, life history
Otolith Lab 