Evaluation of ageing accuracy with complementary non‐lethal methods for slow‐growing, northern populations of shoal bass

Long, James M.; Holley, Colt T.; Taylor, Andrew

doi:10.1111/fme.12274

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…However, their growth model failed to exhibit an asymptote, in part because of the maximum age of 12 found in that population (Long et al. 2018). For Smallmouth Buffalo in our study, which lived to 61 years, a clear asymptote is apparent in the scatterplot of TL against estimated age for all structures we examined, suggesting that inaccurate and imprecise age data from other structures, such as nonlethal pectoral fin rays, may be useful for growth modeling, at least for comparison purposes.…”

Section: Discussionmentioning

confidence: 98%

“…We found that Smallmouth Buffalo exhibited slow growth after approximately 20 years and longevity up to 61 years, suggesting that growth analyses may be sufficient with imprecise and inaccurate age estimates in the range we found. For example, Long et al (2018) used nonlethal scales, which are imprecise and inaccurate, to estimate age in conjunction with mark-recapture to measure growth for Shoal Bass Micropterus cataractae and found growth models to diverge only for the youngest and oldest individuals in the population. Moreover, their models were sufficient to compare to other populations and discern fast-growing from slow-growing populations.…”

Section: Discussionmentioning

confidence: 99%

“…For example, Long et al. (2018) used nonlethal scales, which are imprecise and inaccurate, to estimate age in conjunction with mark–recapture to measure growth for Shoal Bass Micropterus cataractae and found growth models to diverge only for the youngest and oldest individuals in the population. Moreover, their models were sufficient to compare to other populations and discern fast‐growing from slow‐growing populations.…”

Section: Discussionmentioning

confidence: 99%

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Validation and Comparison of Age Estimates for Smallmouth Buffalo in Oklahoma Based on Otoliths, Pectoral Fin Rays, and Opercula

Long

Snow²,

Shoup

et al. 2023

N American J Fish Manag

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With an increased interest in nongame fishes such as buffalofishes (Catostomidae, Ictiobus), there is a need for better foundational data on their life history. Bigmouth Buffalo I. cyprinellus, for example, have been found to live for more than a century. Age estimates for other sucker species have similarly suggested long life spans, but validation studies as reference points are often lacking. We conducted a 3-year study on Smallmouth Buffalo I. bubalus in Oklahoma to validate annual increments on three hard part structures (otoliths [lapilli], pectoral fin rays, and opercula) typically used for age estimation. We marked wild fish with oxytetracycline (OTC) injection and stocked those fish into a hatchery pond to create a population of fish with known times since marking. Furthermore, reproduction in the pond allowed us to validate annulus formation in young fish. We analyzed 117 fish and found that otoliths were more reliable, precise, and accurate than the other two structures for detecting OTC marks and counting annuli. Age estimates, from 1 to 61 years, were greatest when otoliths were used, with 99% of estimates corresponding to known time since marking or known age. Otoliths appear to be the only reliable structure for accurately estimating the age of Smallmouth Buffalo within 1 year of actual age, and their use indicates that this species can live for more than six decades in Oklahoma.Buffalofishes (Catostomidae, Ictiobus) are becoming increasingly recognized for their intrinsic roles in the ecosystem (Rypel et al. 2021;Scarnecchia et al. 2021), such as altering water quality (Goetz et al. 2014) and serving as hosts for freshwater mussels (Freshwater Mussel Host Database 2017). Despite this, buffalofishes have historically been viewed as nuisance species that compete for resources with popular sport fish, and their numbers have

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Validation and Comparison of Age Estimates for Smallmouth Buffalo in Oklahoma Based on Otoliths, Pectoral Fin Rays, and Opercula

Long

Snow²,

Shoup

et al. 2023

N American J Fish Manag

Self Cite

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Sectioned or whole otoliths? A global review of hard structure preparation techniques used in ageing sparid fishes

Winkler

Duncan

Farthing

et al. 2019

Rev Fish Biol Fisheries

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Phenotypic homogenization and potential fitness constraints following non-native introgression in an endemic sportfish

Gunn,

Clements,

Adams

et al. 2024

Journal of Evolutionary Biology

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Introgressive hybridization may lead to contrasting evolutionary outcomes that are difficult to predict, since they depend on the fitness effects of endogenous genomic interactions and environmental factors. Conservation of endemic biodiversity may be more effective with require direct measurement of introgressed ancestry and fitness in wild populations, especially for keystone taxa at risk of hybridization following species introductions. We assessed the relationship of non-native ancestry with growth and body condition in the basin-restricted Neosho Bass (Micropterus velox; NB), focusing on two streams in the NB native range that are admixed extensively with non-native Smallmouth Bass (M. dolomieu; SMB). We quantified genetic composition of 116 fish from Big Sugar Creek (N=46) and Elk River (N=70) at 14 microsatellite loci. Using back-calculated total length-at-age estimated from sagittal otoliths, we assessed whether genetic ancestry explained variation in von Bertalanffy growth model parameters, accounting for sex and stream effects. We then assessed the relationship of ancestry and body condition. We found no differences in growth parameters by sex, stream, or ancestry, suggesting phenotypic homogenization which could be mediated by selection on body size. We found a negative correlation between SMB ancestry and condition, including lower condition in Big Sugar Creek, possibly reflecting a trade-off between maximum length and condition with respect to overall fitness. We show that ongoing non-native introgression, which may be augmented by anthropogenic SMB introductions, may attenuate evolutionary differentiation between species and directly influence fitness, possibly having critical implications for long-term persistence and management of adaptive potential in a popular and ecologically important endemic sportfish.

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Evaluation of ageing accuracy with complementary non‐lethal methods for slow‐growing, northern populations of shoal bass

Cited by 3 publications

References 27 publications

Validation and Comparison of Age Estimates for Smallmouth Buffalo in Oklahoma Based on Otoliths, Pectoral Fin Rays, and Opercula

Validation and Comparison of Age Estimates for Smallmouth Buffalo in Oklahoma Based on Otoliths, Pectoral Fin Rays, and Opercula

Sectioned or whole otoliths? A global review of hard structure preparation techniques used in ageing sparid fishes

Phenotypic homogenization and potential fitness constraints following non-native introgression in an endemic sportfish

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