Electrofishing Practices Have Limited Effects on Largemouth Bass Feeding Behavior

Siepker, Michael J.; Ostrand, Kenneth G.; Ball, Elizabeth; Wahl, David H.

doi:10.1577/m10-072.1

Cited by 4 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Future investigation could focus on determining the suitable magnitude of current to initiate immediate immobilization using FHGs based on fish size, since the response time to electric current is related to the size of the fish (Snyder ; Siepker et al. ).…”

Section: Discussionmentioning

confidence: 99%

“…Our own standardized method for FHG treatment may have negated the benefits of electrosedation and its associated reduction in handling stress (Trushenski et al 2012a). Future investigation could focus on determining the suitable magnitude of current to initiate immediate immobilization using FHGs based on fish size, since the response time to electric current is related to the size of the fish (Snyder 2003;Siepker et al 2010).…”

Section: Plasma Cortisol Responsesmentioning

confidence: 99%

See 1 more Smart Citation

Comparing Immobilization, Recovery, and Stress Indicators Associated with Electric Fish Handling Gloves and a Portable Electrosedation System

et al. 2018

View full text Add to dashboard Cite

Fish sedation facilitates safer handling of fish during scientific research or fisheries assessment practices, thus limiting risk of injury to fish and reducing stress responses. In recent years, there has been growing interest in using electricity to sedate fish; two methods include (1) lower‐voltage, non‐pulsed‐DC fish handling gloves (FHGs) that tend to only sedate fish while the gloves are touching the animal; and (2) a comparatively high‐voltage, pulsed‐DC Portable Electrosedation System (PES) that leads to galvanonarcosis. This study compared the physiological consequences of exposure to FHGs and PES in teleost fish. Bluegills Lepomis macrochirus and Largemouth Bass Micropterus salmoides were exposed to FHGs, PES, or a handling control for a 3‐min simulated surgery. Blood was then sampled at 0.5 and 4.5 h postexposure and was analyzed for blood glucose, blood lactate, and plasma cortisol concentrations. Opercular rates were monitored during surgery, at 2 min postsurgery, and 0.5 h postsurgery. At 24 h postsurgery, time to exhaustion (via a standardized swimming chase protocol) was assessed. Fish exposed to FHGs tended to exhibit lower opercular rates than fish that were sedated with the PES during simulated surgery. Cortisol levels of Largemouth Bass treated with FHGs were higher than those of fish sedated with the PES. Glucose levels recorded for Bluegills at 4.5 h postsurgery were higher with FHGs than with the PES. In both species, lactate was lower for fish treated with FHGs than for those treated with the PES. At 24 h posttreatment, Bluegills sedated with FHGs exhibited a longer time to exhaustion than those subjected to the PES, whereas Largemouth Bass sedated with the PES exhibited a longer time to exhaustion than those sedated with FHGs. Physiological responses to treatments were inconsistent between species. Further investigation to determine the optimal electrosedation method is required.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Plasma Cortisol Responsesmentioning

confidence: 99%

Comparing Immobilization, Recovery, and Stress Indicators Associated with Electric Fish Handling Gloves and a Portable Electrosedation System

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Juvenile Bluegill were more at risk of predation by Largemouth Bass Micropterus nigricans in the 10 min following an electrofishing event (Wahl et al 2007). Largemouth Bass also responded with reductions in feeding for up to 2.5 h after electrofishing (Siepker et al 2011). Electrofishing has also been shown to have physiological and behavioral influences on reproduction in several fish species.…”

Section: Introductionmentioning

confidence: 99%

“…Largemouth Bass also responded with reductions in feeding for up to 2.5 h after electrofishing (Siepker et al. 2011). Electrofishing has also been shown to have physiological and behavioral influences on reproduction in several fish species.…”

Section: Introductionmentioning

confidence: 99%

Mark–recapture surveys affect nest site fidelity but not reproductive timing of male Smallmouth Bass

Stegens,

Wiegmann,

Angeloni

et al. 2024

N American J Fish Manag

View full text Add to dashboard Cite

Fish population surveys in north‐temperate lakes are often conducted in the fall or spring when individuals are easy to capture with traditional fisheries techniques. Because some fishes are preparing to spawn or are spawning during these seasons, there is a critical need to better understand the potential influences of these surveys on decisions related to fish reproduction. We tested whether spring mark‐recapture surveys using fyke nets followed by electrofishing affect reproductive behaviors of male Smallmouth Bass Micropterus dolomieu in a northern Wisconsin lake. Fyke‐netting, electrofishing, and whole‐lake nest snorkeling surveys were conducted during 2001‐2008, and Floy‐tagged males were tracked across years to test whether capture in the fyke nets only, or capture in the electrofishing survey influenced inter‐year nest site fidelity and reproductive timing. The mark‐recapture surveys were conducted preceding Smallmouth Bass spawning, and returning males caught in the electrofishing survey nested ~50 m farther from their prior year's nest than both males captured only in fyke nets and males that were captured by neither method. Average inter‐year nest distances were ~200 m and median inter‐year nest distances were ~90 m for males not captured in the electrofishing survey. Electrofishing and fyke netting did not influence timing of reproduction. Spring electrofishing surveys for Smallmouth Bass have the potential to displace breeding males from preferred nesting habitats. If displacement negatively influences fitness (i.e., age‐0 survivorship to maturation), spring electrofishing surveys would not be recommended for assessing Smallmouth Bass populations. However, spring population surveys often occur soon after ice off, and surveys conducted at these colder temperatures are typically less stressful and less likely to result in mortality. Future research should test for fitness implications of reduced nest site fidelity following electrofishing in Smallmouth Bass, while considering potential fitness trade‐offs if surveys are moved later in the year.

show abstract

Retardation of Reproduction in the Red Shiner Due to Electroshock

Stewart¹,

Lutnesky²

2014

N American J Fish Manag

View full text Add to dashboard Cite

Electrofishing is widely used to monitor freshwater fishes. Electrofishing sampling appears to be relatively harmless when used appropriately, but biologists have questioned its effects on fishes. Although studies report injury and mortality due to electrofishing, few report effects on reproduction. We assessed the hypothesis that exposure to electroshock alters reproductive processes and output in the Red Shiner Cyprinella lutrensis by determining if pulsed DC has negative effects on interclutch time intervals, clutch sizes, proportion of viable eggs produced by spawning pairs, growth, and recovery time. A total of 125 breeding pairs, with an average of 4.91 (SD, 0.44) spawning events per pair, were used in the study. All dependent variables were tested for the influence of frequency (60 and 120 Hz) and voltage (100 and 400 V) and compared with spawning pairs that were not shocked (a control group). We found that the interclutch time interval was increased, the proportion of viable eggs was reduced, and the recovery time was extended when using the higher‐voltage (400 V) compared with the control and lower‐voltage (100 V) treatments. The total number of eggs laid by females showed no significant differences between treatments. The higher voltage significantly reduced the weight and SL in males, likely due to injury. To our knowledge, this is the first study to report the influence of electroshock on reproduction in iteroparous fishes. The Red Shiner is not a typical target species in fisheries, so the general applicability of the results to other species requires investigation.Received August 5, 2013; accepted January 8, 2014

show abstract

Electrofishing Practices Have Limited Effects on Largemouth Bass Feeding Behavior

Cited by 4 publications

References 25 publications

Comparing Immobilization, Recovery, and Stress Indicators Associated with Electric Fish Handling Gloves and a Portable Electrosedation System

Comparing Immobilization, Recovery, and Stress Indicators Associated with Electric Fish Handling Gloves and a Portable Electrosedation System

Mark–recapture surveys affect nest site fidelity but not reproductive timing of male Smallmouth Bass

Retardation of Reproduction in the Red Shiner Due to Electroshock

Contact Info

Product

Resources

About