The effects of mechanically reducing northern pike density on the sport fish community of West Long Lake, Nebraska, USA

Jolley, Jeffrey C.; Willis, David W.; DeBates, Timothy J.; Graham, Doris

doi:10.1111/j.1365-2400.2008.00609.x

Cited by 15 publications

(11 citation statements)

References 46 publications

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“…Pierce et al 1995;Jolley et al 2008;Arlinghaus et al 2010;Pierce 2010). In all statistical models examined, the only or most important factor on pike record size structure was commercial fisher ID, suggesting that the type of commercial fishing had a strong impact on pike size structure.…”

Section: Fishery-related Factorsmentioning

confidence: 94%

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Voluntary angler logbooks reveal long‐term changes in a lentic pike, Esox lucius, population

Jansen

Arlinghaus

Als

et al. 2013

Fisheries Management Eco

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Sixty‐two years of voluntarily collected angling logbook data from a large natural Danish lake were used to study variation in pike, Esox lucius L., CPUE (catch per unit effort), expressed as no. of captured pike per boat trip, as an index of stock size. Pike CPUE was positively related to pike release rate by anglers and negatively affected by certain commercial fishers. The stocking of young‐of‐the‐year pike and a fishery‐dependent index of perch, Perca fluviatilis L., abundance (which may be pike prey or predator depending on size) did not correlate with pike CPUE. Analyses of the size distribution of pike, based on sizes of annual record trophy pike captured by anglers, confirmed the negative impact of commercial pike fishing and revealed a positive influence of air temperature. It is concluded that high‐quality angler logbooks that record effort and catch can be a cost‐effective tool to inform lake fisheries management by revealing long‐term population trends. Further, state space modelling, a statistical technique not yet seen in recreational fisheries science, is recommended as a tool to model proxies for population dynamics from angler logbook data.

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Section: Fishery-related Factorsmentioning

confidence: 94%

“…It is well known that trophy pike are very vulnerable to even slight fishing pressure and very protective regulations are needed to avoid substantial size truncation on exploited pike stocks (e.g. Pierce et al 1995;Jolley et al 2008;Arlinghaus et al 2010;Pierce 2010).…”

Section: Fishery-related Factorsmentioning

confidence: 99%

Voluntary angler logbooks reveal long‐term changes in a lentic pike, Esox lucius, population

Jansen

Arlinghaus

Als

et al. 2013

Fisheries Management Eco

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“…Conversely, Yellow Perch and White sucker increased in abundance following the removal of Northern Pike from harriet lake, UsA (Colby et al 1987). Bluegill (Lepomis macrochirus) in West long lake, UsA responded positively to a reduction in Northern Pike biomass by approximately 50%, but Yellow Perch did not (Jolley et al 2008).…”

Section: Discussionmentioning

confidence: 98%

Apparent extirpation of prey fish communities following the introduction of Northern Pike (<em>Esox lucius</em>)

2015

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We examined the long-term effects on prey fish communities of introducing Northern Pike (Esox lucius), a top predator fish, into small, Boreal Shield lakes lacking natural piscivore populations. During 1987–1994, Northern Pike were introduced into Lakes 110, 221, and 227 in the Experimental Lakes Area in northwestern Ontario, Canada. In Lake 227, prey fish were undetectable three years after the addition of Northern Pike. Although Northern Pike were removed from the lake by 1996, multiple independent visual and trapping surveys have yielded no evidence of any fish in Lake 227 since then. In 1994–1995, 85% of the Northern Pike were removed from Lake 221. In 2012, despite intensive sampling efforts using baited minnow traps, fyke nets, trap netting, gill netting, angling, and visual observation, no forage fish of any species was observed or caught in Lake 110 or 221. In all three lakes where Northern Pike were added, prey fish populations were extirpated or too small to detect. In Lake 221, we estimated the current population of Northern Pike to be 49 ± 37, a 59% decrease since 2000 when prey fish were still present. The mean total length and body condition of Northern Pike in Lake 221 had not changed since the prey community collapsed. Our findings suggest that the introduction of Northern Pike into lakes without natural piscivore populations has long-lasting effects on fish community structure, to the detriment of both Northern Pike and prey fish populations.Note: an erratum for this article was published in the subsequent issue, and is attached to the end of this article's pdf. Table 2 had not been justified properly; the revised table corrects this issue.

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“…Based on gill-net catchability and annual mortality, the relative abundance of Northern Pike (≥537 mm) in Pactola Reservoir was estimated at 3.1 fish/ha (i.e., 996 fish/318 ha). Although lower than that typically reported for shallow, productive lakes (e.g., 20-30 fish/ha: Jolley et al 2008) our density estimate was within the range reported for other studies. In College Lake, Colorado, a 7-year study of Northern Pike (≥550 mm) reported densities ranging from 3.7 to 6.7 fish/ha (Willis et al 1984).…”

Section: Discussionmentioning

confidence: 99%

Impacts of Northern Pike on Stocked Rainbow Trout in Pactola Reservoir, South Dakota

Scheibel¹,

Dembkowski²,

Davis

et al. 2016

N American J Fish Manag

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Establishment of nonnative Northern Pike Esox lucius in Pactola Reservoir, South Dakota, has prompted concern among biologists about the influence of this species on the lake's intensively managed salmonid fisheries. Ancedotal information suggests that catch rates of Rainbow Trout Oncorhynchus mykiss have declined while mean size and abundance of Northern Pike has increased, although quantitative information on diet and growth of the Northern Pike population is lacking. To address potential interactions between Northern Pike and Rainbow Trout, we assessed size‐dependent predation by Northern Pike on Rainbow Trout and determined the relative energetic contribution of stocked Rainbow Trout to Northern Pike growth using bioenergetics modeling. Stable isotopes combined with traditional diet analyses revealed that smaller Northern Pike (<600 mm TL) consumed primarily centrarchids and Rainbow Smelt Osmerus mordax, and Rainbow Trout contributed less than 10% to their annual energy consumption. In contrast, larger Northern Pike (≥600 mm TL) consumed primarily Rainbow Trout, which accounted for 56% of their annual energy consumption. Combining estimates of Northern Pike predation with production costs of catchable‐size Rainbow Trout revealed that annual economic losses ranged from US$15,259 to $24,801 per year. Over its lifespan, an age‐10 Northern Pike was estimated to consume ~117 Rainbow Trout worth approximately $340. Thus, Northern Pike predation substantially influences salmonid management initiatives and is likely a primary factor contributing to reduced Rainbow Trout abundance and return to anglers in Pactola Reservoir. Strategies for reducing Northern Pike predation on Rainbow Trout include increasing the size of stocked fish or altering the timing and spatial distribution of stocking events. Received June 5, 2015; accepted November 2, 2015 Published online March 8, 2016

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The effects of mechanically reducing northern pike density on the sport fish community of West Long Lake, Nebraska, USA

Cited by 15 publications

References 46 publications

Voluntary angler logbooks reveal long‐term changes in a lentic pike, Esox lucius, population

Voluntary angler logbooks reveal long‐term changes in a lentic pike, Esox lucius, population

Apparent extirpation of prey fish communities following the introduction of Northern Pike (<em>Esox lucius</em>)

Impacts of Northern Pike on Stocked Rainbow Trout in Pactola Reservoir, South Dakota

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