Bigmouth Buffalo Ictiobus cyprinellus sets freshwater teleost record as improved age analysis reveals centenarian longevity

Lackmann, Alec R.; Andrews, Allen H.; Butler, Malcolm G.; Bielak‐Lackmann, Ewelina S.; Clark, Mark E.

doi:10.1038/s42003-019-0452-0

Cited by 54 publications

(101 citation statements)

References 36 publications

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“…We air-dried whole otoliths and weighed them (nearest µg) using a Cahn Electrobalance. We prepared and thin-sectioned otoliths following the protocol used by Lackmann et al (2019) on the lapilli of Bigmouth Buffalo Ictiobus cyprinellus, a closely related catostomid for which otolith age estimates are validated.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Four Hard Structures Including Otoliths for Estimating Age in Blue Suckers

et al. 2021

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The Blue Sucker Cycleptus elongatus is an imperiled North American catostomid in need of management and protection. No hard structures are validated for aging this species, but past studies focused on somatic structures such as fin rays and scales. Calculated parameters (mortality, recruitment, growth) that inform management decisions are directly influenced by the accuracy and precision of the hard structure used to estimate age. We identify the most precise and credible structure with which to age Blue Suckers while also completing the first in-depth investigation of their otoliths. We collected Blue Suckers (n = 168) from the lower Wabash River and compared ages estimated from scales, opercles, pectoral fin rays, and lapillus otoliths but were unsuccessful in estimating ages from cleithra. We identified structure bias between all structures and found scales (n = 67; maximum = 11 years, mean = 8.2 years) and opercles (n = 65; maximum = 15 years, mean = 8.3 years) to be substantially less precise than pectoral fin rays and lapillus otoliths. We found that otoliths (n = 128; maximum = 42 years, mean = 13.5 years) were more precise than fin rays (n = 167; maximum = 20 years, mean = 9.6 years) and yielded a much higher range of ages. We could not identify any range of ages or total lengths in which (nonlethal) fin ray age could be accurately corrected to (lethal) otolith age. Thin-sectioned otoliths are the gold standard for aging most fishes, including numerous age-validated catostomids, and the credibility of Blue Sucker otolith age estimates was additionally supported by a strong correlation between whole lapillus mass and estimated age (R 2 = 0.89). Overall, evidence indicates that Blue Sucker lapillus otoliths yield more precise and credible age estimates than other hard structures.

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Section: Methodsmentioning

confidence: 99%

Comparison of Four Hard Structures Including Otoliths for Estimating Age in Blue Suckers

et al. 2021

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“…, ; Lackmann et al. ), a strong argument could be made to reassess age and growth analyses moving forward and embrace a more conservative approach. This mark–recapture study provided lower estimates of total annual mortality, conditional natural mortality, and exploitation, which would not raise concern or require regulation change in most exploited fish populations.…”

Section: Discussionmentioning

confidence: 99%

Paddlefish Exploitation and Movements within the Mississippi River Basin

Devine

Tripp

Kramer

2020

N American J Fish Manag

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The Paddlefish Polyodon spathula is an ancient species that is native to the Mississippi River and its larger tributaries. This species exhibits a unique combination of morphology and life history characteristics that leaves it vulnerable to river modifications and potential overexploitation, which has led to population declines in portions of the historic range. Concern regarding unknown exploitation rates from recreational and commercial fisheries has increased in recent decades, and the Convention on International Trade of Endangered Species is now requesting information from state agencies regarding the sustainability of commercially harvested Paddlefish populations. The Missouri Department of Conservation addressed this, in part, through the implementation of a 5-year mark-recapture study to estimate exploitation and nonreporting rates, evaluate movement patterns, and provide a baseline estimate of abundance for Paddlefish in the Mississippi River basin. A total of 2,224 Paddlefish were jaw-banded, and 102 were also implanted with transmitters in the Mississippi River basin within the borders of Missouri. Of those, 139 Paddlefish were caught by commercial or recreational anglers and 92 were harvested, resulting in an average annual exploitation estimate of 2.5% (SE = 0.6). Jaw band returns and telemetry information demonstrated that Paddlefish moved great distances (maximum 2,359 km) and crossed many regulatory boundaries (14 states). Despite relatively low exploitation rate estimates, a precautionary adjustment of regulations is advised to protect Paddlefish through maturation and ensure sustainability. In addition, regulations for this species should be assessed across the entire Mississippi River basin, as they differ within and between regulatory authorities. A combination of population monitoring (e.g., exploitation and population dynamics) and telemetry efforts have potential to help inform future basin-wide management approaches.

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“…Additionally, two fish species of biological interest are present in the system, freshwater drum Aplodinotus grunniens and bigmouth buffalo Ictiobus cyprinellus, both of which exhibit exceptional longevity for teleost fishes (Davis‐Foust ; Lackmann et al. ). Common carp Cyprinus carpio is the predominant non‐native fish species in Lake Winnipeg in terms of biomass and has been documented to damage peripheral wetlands (Badiou and Goldsborough ).…”

Section: Methodsmentioning

confidence: 99%

An unseen synchrony or recurrent resource pulse opportunity? linking fisheries with aeroecology

Hansen

Pegg

Broeke

et al. 2020

Remote Sens Ecol Conserv

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Understanding insect and fish interactions from a spatial and temporal perspective can have implications on large-scale phenology in freshwater systems, yet current information is limited. We employed a novel approach of combining information from acoustic telemetry for six freshwater fish species and weather radar to assess the phenology of mayfly emergence and foraging patterns of freshwater fish. We hypothesized that freshwater fish conduct synchronous movements with annual mayfly hatches as a pulse resource opportunity. Generalized additive models were developed to assess movement distance as a function of species and time; before, during, and after annual mayfly hatch events. A cross-section abundance index was also employed to quantify dynamics of aerial mayflies. Hatch dynamics revealed nocturnal emergence behaviour with annual variations in intensity, spatial extent, and origin. We found that the hatch was likely a pulse resource feeding opportunity for channel catfish, common carp, freshwater drum, and walleye instead of a synchronized feeding event. Bigmouth buffalo and lake sturgeon utilized riverine habitat away from the hatch and did not likely forage on the emerging mayflies. Remote sensing of fishes and emergent insects using our approach is the first attempt at bridging the capabilities of fisheries ecology and aeroecology to advance movement ecology.

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Bigmouth Buffalo Ictiobus cyprinellus sets freshwater teleost record as improved age analysis reveals centenarian longevity

Cited by 54 publications

References 36 publications

Comparison of Four Hard Structures Including Otoliths for Estimating Age in Blue Suckers

Comparison of Four Hard Structures Including Otoliths for Estimating Age in Blue Suckers

Paddlefish Exploitation and Movements within the Mississippi River Basin

An unseen synchrony or recurrent resource pulse opportunity? linking fisheries with aeroecology

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