Survival, Movement, and Distribution of Juvenile Burbot in a Tributary of the Kootenai River

Beard, Zachary S.; Quist, Michael C.; Hardy, Ryan S.; Ross, Tyler J.

doi:10.1080/02755947.2017.1376010

Cited by 5 publications

(4 citation statements)

References 47 publications

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“…Using the RD model to account for temporary emigration and including transience in the model can help to resolve some confounding of movement and survival (Kendall et al 1997) but not completely. Other studies have used a Barker resight model (Barker 1997;Conner et al 2015;Beard et al 2017) to help differentiate true survival from emigration; however, our unpublished data indicate the Barker model relies on global resighting probabilities throughout the entire river and can lead to biases in survival under heterogeneous resight probabilities associated with fixed-site sampling. Sampling of the entire river is often impossible due to funding and logistical constraints, and this limits the utility of the Barker model in many circumstances.…”

Section: Discussionmentioning

confidence: 90%

Vital rates of a burgeoning population of Humpback Chub in western Grand Canyon

et al. 2023

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Objective:The Colorado River ecosystem has experienced habitat alterations and nonnative species invasions; as a result, many of its native species have had extirpations, abundance declines, and range constrictions. Despite these pitfalls, the Humpback Chub Gila cypha has persisted and in the last 10-15 years has expanded its range to become abundant in western Grand Canyon, a river segment in which it had been rare for the prior three decades. The goal of this study was to evaluate the population dynamics (i.e., growth, survival, movement, abundance) for this "new" group of Humpback Chub. Methods:We analyzed a 6-year mark-recapture study from a fixed monitoring reach in western Grand Canyon, and we provide the first estimates of survival and growth (vital rates) for these fish. We compared vital rates in western Grand Canyon to those of two life history forms (residents and migrants, representing fast and slow life history trajectories, respectively) from the more established Little Colorado River (LCR) aggregation in eastern Grand Canyon. Result: Compared to LCR migrants and LCR residents, Humpback Chub in westernGrand Canyon had intermediate values for apparent survival, growth, and asymptotic length. Relatively high survival of subadults coupled with fast growth allowed for rapid population growth in western Grand Canyon. However, a large cohort in 2017 failed to lead to noticeable increases in adults. Seasonal survival patterns were distinct in all three groups, and apparent survival was lowest in western Grand Canyon during spring months. Adult Humpback Chub in western Grand Canyon were mobile and had a high probability of transience (i.e., just passing through the reach) and temporary emigration, demonstrating the need for future movement studies in western Grand Canyon to better distinguish emigration from survival. Conclusion:There is considerable spatial variability in viral rates for Humpback Chub in Grand Canyon. We discuss how observations are related to disparate temperature regimes experienced by the three groups and whether (how) the relationship between metabolism and temperature influences vital rates within the river network.

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Section: Discussionmentioning

confidence: 90%

Vital rates of a burgeoning population of Humpback Chub in western Grand Canyon

et al. 2023

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“…Prior research suggests that increases in mortality of juvenile Burbot have the greatest effect on reducing Burbot population growth (Klein et al 2016; Brauer et al 2019). Beard et al (2017) observed low levels of dispersion for juvenile Burbot stocked in Deep Creek, Idaho. If wild juvenile Burbot exhibit similar movement patterns in the Green River, targeting these sites after ice‐off may increase the efficiency of removal efforts on juvenile age‐classes.…”

Section: Discussionmentioning

confidence: 99%

Movement Dynamics of Nonnative Burbot in the Upper Green River System and Implications for Management

Brauer

Quist

Rhea

et al. 2020

N American J Fish Manag

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Burbot Lota lota were illegally introduced to the Green River, Wyoming, in the mid-1990s and pose a threat to recreational fisheries and native fish conservation. Although much is known about Burbot population dynamics, little is known about their movement patterns. Our objectives were to describe the movement dynamics of Burbot in the upper Green River system to provide information on the ecology of Burbot and insight on possible management actions. In total, 875 Burbot were tagged with PIT tags in the upper Green River and Fontenelle Reservoir; their movements were tracked from August 2016 to March 2018. Additionally, 22 Burbot were tagged with radio transmitters in Fontenelle Reservoir in November 2017, and 13 Burbot were tagged with radio transmitters in the upper Green River in November 2018. Of these fish, 11 Burbot tagged in Fontenelle Reservoir and all river-tagged Burbot were tracked as they migrated into the Green River and associated tributaries during the spawning season. Upstream and downstream movements of Burbot tagged with PIT tags in Fontenelle Reservoir and the upper Green River peaked during December-January and were synchronized with river temperatures reaching 0°C. Of the total number of PIT-tagged Burbot, 10-15% of those tagged in Fontenelle Reservoir were detected in the Green River during the spawning season and 15% of those tagged in the Green River were detected moving downstream toward Fontenelle Reservoir during the spawning period. Movements of radiotelemetered Burbot were synchronized with river ice-up in mid-December. Maximum upstream distance traveled by adfluvial Burbot was 5.8 km. Fluvial Burbot primarily migrated downstream during the spawning period, and maximum downstream distance traveled was 17.7 km. Detection data suggest that both fluvial and adfluvial Burbot occupy the same reaches

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“…These findings suggest passive antenna location can influence the study results, especially if passive antennas are placed in locations where individuals are unlikely to be detected (Pearson et al 2016). For example, Beard et al (2017) found that passive antennas within 1 km of stocking sites accounted for 88% of detections of juvenile Burbot Lota lota and suggested that antenna placement could bias inferences about dispersal. Stream size and site location are also important to consider when determining the applicability of passive antennas (Zydlewski et al 2006).…”

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confidence: 99%

A Review of Factors Affecting PIT Tag Detection Using Mobile Arrays and Use of Mobile Antennas to Detect PIT‐Tagged Suckers in a Wadeable Ozark Stream

Zentner

Wolf

Brewer

et al. 2021

N American J Fish Manag

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Advantages of PIT tags are their small size, longevity, and low cost compared to other tags. They are often used in fisheries to study movement patterns and survival or to estimate population size. However, PIT tags are limited by their short detection distance. Mobile PIT antennas may increase the utility of PIT tags in fisheries. In this study, we synthesized current detection efficiency literature for mobile PIT antennas, determined physical factors that decreased PIT tag detection probabilities for our antenna, determined factors that influenced the proportion of PIT‐tagged suckers detected by our mobile antenna, and summarized techniques used to increase detections of PIT‐tagged suckers using mobile antennas in a wadable stream. Our literature review indicated that tag size and orientation were the most important factors affecting detection probabilities. However, our manual testing suggested that the detection probability for our antenna was primarily influenced by water depth of the tag and distance from the antenna. Our sucker detection data showed that detection efficiency in our stream was most influenced by discharge, turbidity, and sample date. Tracking methods that include targeting key habitats (e.g., rootwads) and using natural features to congregate tagged fishes (e.g., riffles or pinch points) may increase detection efficiency in wadable streams. This is the first formal review of factors affecting mobile PIT antenna detection efficiency. The published literature, combined with our study results, indicates that several factors need to be considered prior to mobile PIT antenna tracking.

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Survival, Movement, and Distribution of Juvenile Burbot in a Tributary of the Kootenai River

Cited by 5 publications

References 47 publications

Vital rates of a burgeoning population of Humpback Chub in western Grand Canyon

Vital rates of a burgeoning population of Humpback Chub in western Grand Canyon

Movement Dynamics of Nonnative Burbot in the Upper Green River System and Implications for Management

A Review of Factors Affecting PIT Tag Detection Using Mobile Arrays and Use of Mobile Antennas to Detect PIT‐Tagged Suckers in a Wadeable Ozark Stream

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