Comparison of American Fisheries Society (AFS) Standard Fish Sampling Techniques and Environmental DNA for Characterizing Fish Communities in a Large Reservoir

Autor: Jon J. Amberg, Anthony T. Robinson, Christina R. Perez, Scott A. Bonar, Christopher J. Cantrell, Christopher B. Rees, William T. Stewart, Bridget Ladell, Curtis J. Gill
Rok vydání: 2017
Předmět:
Zdroj: North American Journal of Fisheries Management. 37:1010-1027
ISSN: 1548-8675
0275-5947
DOI: 10.1080/02755947.2017.1342721
Popis: Recently, methods involving examination of environmental DNA (eDNA) have shown promise for characterizing fish species presence and distribution in waterbodies. We evaluated the use of eDNA for standard fish monitoring surveys in a large reservoir. Specifically, we compared the presence, relative abundance, biomass, and relative percent composition of Largemouth Bass Micropterus salmoides and Gizzard Shad Dorosoma cepedianum measured through eDNA methods and established American Fisheries Society standard sampling methods for Theodore Roosevelt Lake, Arizona. Catches at electrofishing and gillnetting sites were compared with eDNA water samples at sites, within spatial strata, and over the entire reservoir. Gizzard Shad were detected at a higher percentage of sites with eDNA methods than with boat electrofishing in both spring and fall. In contrast, spring and fall gillnetting detected Gizzard Shad at more sites than eDNA. Boat electrofishing and gillnetting detected Largemouth Bass at more sites t...
Databáze: OpenAIRE