Influence of Electrofishing Boat Operation and Driving Techniques on Reservoir Fish Catches.

This article compares three boat electrofishing methods—parallel continuous (PC), parallel intermittent (PI), and arc-intermittent (AI)—for sampling warmwater fish populations in five large reservoirs in Arizona. The study found that the PC method required the least time, while the AI method covered the shortest distance per transect and yielded slightly higher catch per unit effort (CPUE) for certain species such as Bluegill (Lepomis macrochirus) and Yellow Bass (Morone mississippiensis). Length frequency distributions were generally similar among methods, though some differences were noted for Gizzard Shad (Dorosoma cepedianum), Largemouth Bass (Micropterus salmoides), and Bluegill. Overall, any of the methods are suitable for time-based sampling of most species, but the AI method may be preferable when targeting specific species or size classes, whereas the PI method is less effective for distance-based sampling.