Genetic Evidence of Isolation by Distance and Impact of Impoundments on Genetic Diversity of Riverine Channel Catfish

Sotola, V. Alex; Schrey, Aaron W.; Ragsdale, Alexandria K.; Whitledge, Gregory W.; Frankland, Les; Bollinger, Eric K.; Colombo, Robert E.

doi:10.1080/00028487.2017.1362471

Cited by 12 publications

(30 citation statements)

References 55 publications

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“…Frequent exchange between the main‐stem river and tributaries has been documented throughout life for all three ictalurid species in this system (Sotola et al. 2017; Oliver 2021) and in the connected Mississippi River (Laughlin et al. 2016).…”

Section: Discussionmentioning

confidence: 87%

“…Additionally, there is evidence of exchange among the lower 214 km of the main‐stem Ohio River, its tributaries, and the Mississippi River for all three species (Sotola et al. 2017; Oliver 2021), and alignment and continuity of the regulations may be warranted as fish traverse through multiple jurisdictional boundaries. However, there has been no evaluation of the potential impact or efficacy of the new regulations in the Ohio River section bordering Illinois, including prior to the adoption of the regulations.…”

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confidence: 99%

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Evaluation of Recently Implemented Harvest Regulations in a Data‐Limited Catfish Fishery with Bayesian Estimation

Oliver

Rude

Whitledge

et al. 2021

N American J Fish Manag

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In 2015, the Illinois Department of Natural Resources changed size and harvest limits for catfishes (Blue Catfish Ictalurus furcatus, Flathead Catfish Pylodictis olivaris, and Channel Catfish I. punctatus) in the lower Ohio River to match those of neighboring states. The new regulations imposed a daily limit of one 88.9‐cm (35‐in) or larger Blue or Flathead Catfish per fisher, one 71.1‐cm (28‐in) or larger Channel Catfish per fisher, and a 33.0‐cm (13‐in) minimum length limit for all species, with no harvest restrictions between these limit lengths (permissive slot). When these management regulations were implemented, potential efficacy was unknown. The goal of this study was to evaluate the potential effects of these regulations using the limited data for baseline demographic parameters. Bayesian modeling was used to estimate growth and mortality because of the ability to estimate derived functions of parameters and associated uncertainty (as credible intervals). Yield‐per‐recruit (YPR) modeling was used to estimate and evaluate the fishing mortality rates (F) that would induce growth overfishing (FMAX) and the yield at FMAX (YPRMAX) for three management scenarios: no harvest restrictions (former regulation), a 33.0‐cm minimum length limit, and the enacted permissive slot limits. Model results suggested that catfish stocks are unlikely to benefit from current regulations given the near‐complete overlap of YPRMAX credible intervals for all estimable scenarios and the small significant differences (1–3%) based on FMAX between the most permissive and most restrictive scenarios. Despite the existence of significant differences in FMAX, they are likely biologically irrelevant based on the life histories of these species. Although modeling results suggested that the implemented harvest regulations will not likely affect catfish population demographics or fishery yield in the lower Ohio River, a post hoc evaluation examining the accuracy of these predictions is needed and would improve the accuracy and precision of parameter estimates.

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Section: Discussionmentioning

confidence: 87%

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confidence: 99%

Evaluation of Recently Implemented Harvest Regulations in a Data‐Limited Catfish Fishery with Bayesian Estimation

Oliver

Rude

Whitledge

et al. 2021

N American J Fish Manag

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“…9 ) in particular but also Etheostoma to some extent. Other studies have also documented dams as barriers to gene flow for channel catfish ( Sotola et al, 2017 ). We did not systematically test genotypic distributions relative to the dam for all taxa as 12S polymorphism in the reference database was limited.…”

Section: Discussionmentioning

confidence: 99%

Composition and distribution of fish environmental DNA in an Adirondack watershed

Cornman

McKenna

Fike

2021

PeerJ

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Background Environmental DNA (eDNA) surveys are appealing options for monitoring aquatic biodiversity. While factors affecting eDNA persistence, capture and amplification have been heavily studied, watershed-scale surveys of fish communities and our confidence in such need further exploration. Methods We characterized fish eDNA compositions using rapid, low-volume filtering with replicate and control samples scaled for a single Illumina MiSeq flow cell, using the mitochondrial 12S ribosomal RNA locus for taxonomic profiling. Our goals were to determine: (1) spatiotemporal variation in eDNA abundance, (2) the filtrate needed to achieve strong sequencing libraries, (3) the taxonomic resolution of 12S ribosomal sequences in the study environment, (4) the portion of the expected fish community detectable by 12S sequencing, (5) biases in species recovery, (6) correlations between eDNA compositions and catch per unit effort (CPUE) and (7) the extent that eDNA profiles reflect major watershed features. Our bioinformatic approach included (1) estimation of sequencing error from unambiguous mappings and simulation of taxonomic assignment error under various mapping criteria; (2) binning of species based on inferred assignment error rather than by taxonomic rank; and (3) visualization of mismatch distributions to facilitate discovery of distinct haplotypes attributed to the same reference. Our approach was implemented within the St. Regis River, NY, USA, which supports tribal and recreational fisheries and has been a target of restoration activities. We used a large record of St. Regis-specific observations to validate our assignments. Results We found that 300 mL drawn through 25-mm cellulose nitrate filters yielded greater than 5 ng/µL DNA at most sites in summer, which was an approximate threshold for generating strong sequencing libraries in our hands. Using inferred sequence error rates, we binned 12S references for 110 species on a state checklist into 85 single-species bins and seven multispecies bins. Of 48 bins observed by capture survey in the St. Regis, we detected eDNA consistent with 40, with an additional four detections flagged as potential contaminants. Sixteen unobserved species detected by eDNA ranged from plausible to implausible based on distributional data, whereas six observed species had no 12S reference sequence. Summed log-ratio compositions of eDNA-detected taxa correlated with log(CPUE) (Pearson’s R = 0.655, P < 0.001). Shifts in eDNA composition of several taxa and a genotypic shift in channel catfish (Ictalurus punctatus) coincided with the Hogansburg Dam, NY, USA. In summary, a simple filtering apparatus operated by field crews without prior expertise gave useful summaries of eDNA composition with minimal evidence of field contamination. 12S sequencing achieved useful taxonomic resolution despite the short marker length, and data exploration with standard bioinformatic tools clarified taxonomic uncertainty and sources of error.

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“…For Channel Catfish, both abundance and size structure differences were detected in the fragmented Minnesota River (Sindt 2021, this special issue), whereas the free‐flowing portions of the Wabash River supported higher Channel Catfish genetic diversity than the highly impounded Ohio River with isolated populations (Sotola et al. 2017). Both Blue Catfish and Flathead Catfish (Blank et al.…”

Section: Summary Of Progressmentioning

confidence: 99%

Catfish 2020, A Clear Vision of the Future

Porath

Kwak

Neely

et al. 2021

N American J Fish Manag

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The Third International Catfish Symposium was held in Little Rock, Arkansas, in 2020 and provided another milestone to gauge advances in knowledge related to conservation and management of these valuable fishes. Attendees from 29 states and 4 countries gathered to communicate research and information on the conservation, ecology, and management of the world’s catfishes. During 3 d of technical sessions and workshops, 74 oral presentations and 17 posters were shared with 198 attending fisheries professionals. Plenary and oral presentations were recorded and are available online (https://www.youtube.com/channel/UCHNt7ZV05DLWoe4qJO798Pw/videos), aligning with the symposium theme of “Communicating Catfish Science.” Technical sessions explored current research and management issues that included population demographics, introduced catfish populations, sampling methods, harvest management, human dimensions, conservation, habitat use and movement, biology, and aging methods. Ultimately, 38 manuscripts were peer reviewed and published as this special issue of the North American Journal of Fisheries Management. Interest in catfish science, as gauged by publications in six peer‐reviewed fisheries journals, has grown steadily since a 1910 catfish aquaculture article appeared in the Transactions of the American Fisheries Society. Biology and ecology topics became prominent in the 1970s and 1980s, while articles on techniques and fisheries management have grown steadily through 2020. Ecology, fisheries management, and techniques were the most published topics in the three international catfish symposia. Future research and management efforts will continue similar work but also seek to address the expanding role of catfish as invasive species and a better understanding of the ecology and conservation of small‐bodied native catfish. Among the greatest challenges will be adapting current tools and identifying future knowledge gaps as we experience a changing climate. This will require an enhanced understanding of transforming ecosystems and advanced adaptive management applications. The decadal occurrence of a dedicated symposium has served to summarize progress and focus future efforts to advance catfish science.

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Genetic Evidence of Isolation by Distance and Impact of Impoundments on Genetic Diversity of Riverine Channel Catfish

Cited by 12 publications

References 55 publications

Evaluation of Recently Implemented Harvest Regulations in a Data‐Limited Catfish Fishery with Bayesian Estimation

Evaluation of Recently Implemented Harvest Regulations in a Data‐Limited Catfish Fishery with Bayesian Estimation

Composition and distribution of fish environmental DNA in an Adirondack watershed

Catfish 2020, A Clear Vision of the Future

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