Diel timing of lake sturgeon (Acipenser fulvescens) activity revealed by satellite tags in the Laurentian Great Lake Basin

Kough, Andrew S.; Jacobs, Gregory R.; Gorsky, Dimitry; Willink, Philip W.

doi:10.1016/j.jglr.2017.10.008

Cited by 7 publications

(2 citation statements)

References 55 publications

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“…However, during recent years fewer studies have been reporting seasonal movement rates. As telemetry technology and analytical approaches evolve, ecologists may be shifting their focus to explore new questions, such as stock boundaries and population substructure (Tripp et al 2019), genetic structure (Welsh and McLeod 2010), spawning site fidelity (Donofrio et al 2018), dam passage (Thiem et al 2011;, and diel activity (Kough et al 2018).…”

Section: Discussionmentioning

confidence: 99%

Effects of Latitude, Season, and Temperature on Lake Sturgeon Movement

Moore

Paukert

Moore

2020

N American J Fish Manag

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Ecologists have a limited understanding of the rangewide variation in movement behavior in freshwater fishes, but recent expansion of biotelemetry allows biologists to investigate how fish movement can help to predict behavioral shifts in response to changing environments. The Lake Sturgeon Acipenser fulvescens is a wide‐ranging, migratory, coolwater species, making it a candidate species for studying patterns in movement ecology. We conducted a literature review and meta‐analysis of seasonal movement data compiled from 38 Lake Sturgeon telemetry studies in North America to build an understanding of spatiotemporal variation in movement behavior. Lake Sturgeon movement studies were underrepresented for low‐latitude populations in the Mississippi, Missouri, and Ohio/Tennessee River basins. Highest movement usually occurred during spring spawning migrations, whereas other populations exhibited their highest movement in the fall, potentially in order to overwinter near spawning grounds. Our meta‐regression analysis indicated that latitude or summer maximum temperature best predicted standardized mean difference between spring and summer movement in Lake Sturgeon populations across the species’ range. Our results suggest that Lake Sturgeon populations at lower latitudes and those that experience warmer summer temperatures have lower summer movement relative to spring movement. Managers may use this information to prioritize actions promoting the conservation of seasonally important habitats for the continued recovery of migratory coolwater fish (e.g., Lake Sturgeon) that potentially experience stressful thermal conditions.

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Section: Discussionmentioning

confidence: 99%

Effects of Latitude, Season, and Temperature on Lake Sturgeon Movement

Moore

Paukert

Moore

2020

N American J Fish Manag

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“…While conclusions can be drawn from raw accelerometer data alone (Kough, Jacobs, Gorsky, & Willink, ; Whitney, Lear, Gleiss, Payne, & White, ), captive studies are extremely valuable for validating accelerometer data and allow more detailed assessment of movement patterns and behavior (Brewster et al, ; Brownscombe, Gutowsky, Danylchuk, & Cooke, ; Goldstein, Dubofsky, & Spanier, ). Working in captivity allows close observation of the animal and matching behavior to accelerometer output, thereby enabling a more detailed calibration of accelerometer data with specific patterns of behavior.…”

Section: Introductionmentioning

confidence: 99%

Acoustic accelerometry reveals diel activity patterns in premigratory Port Jackson sharks

Kadar

Ladds

Mourier

et al. 2019

Ecology and Evolution

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Distinguishing the factors that influence activity within a species advances understanding of their behavior and ecology. Continuous observation in the marine environment is not feasible but biotelemetry devices provide an opportunity for detailed analysis of movements and activity patterns. This study investigated the detail that calibration of accelerometers measuring root mean square (RMS) acceleration with video footage can add to understanding the activity patterns of male and female Port Jackson sharks (Heterodontus portusjacksoni) in a captive environment. Linear regression was used to relate RMS acceleration output to time‐matched behavior captured on video to quantify diel activity patterns. To validate captive data, diel patterns from captive sharks were compared with diel movement data from free‐ranging sharks using passive acoustic tracking. The RMS acceleration data showed captive sharks exhibited nocturnal diel patterns peaking during the late evening before midnight and decreasing before sunrise. Correlation analysis revealed that captive animals displayed similar activity patterns to free‐ranging sharks. The timing of wild shark departures for migration in the late breeding season corresponded with elevated diel activity at night within the captive individuals, suggesting a form of migratory restlessness in captivity. By directly relating RMS acceleration output to activity level, we show that sex, time of day, and sex‐specific seasonal behavior all influenced activity levels. This study contributes to a growing body of evidence that RMS acceleration data are a promising method to determine activity patterns of cryptic marine animals and can provide more detailed information when validated in captivity.

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