Age‐0 blue catfish habitat use and population demographics in the middle Mississippi River

Seibert, K. L.; Seibert, Justin R.; Phelps, Quinton E.

doi:10.1111/fme.12243

Cited by 6 publications

(5 citation statements)

References 26 publications

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“…In addition to distance to the river mouth (rkm) and relative distance to upstream and downstream dams, islands also had a strong influence on fish assemblages. My results, consistent with previous studies, suggest that habitats around islands provide unique functional process zones (i.e., areas of unique hydro and fluvial geomorphic characteristics) that promote habitat heterogeneity (i.e., variations in depth, flow, substrate, and vegetation) necessary for the life history of certain fishes (i.e., Paddlefish, Sturgeon, Darters, Catfishes, and others) (Freedman et al 2010;Freedman et al 2014;Haupt and Phelps 2016;Love et al 2017;Seibert et al 2017). All percid species (i.e., darters) that were collected in adequate frequencies (e.g., ≥ 10% of all samples) were associated with islands in terms of their greatest relative abundance, suggesting that island areas should be of conservation focus.…”

Section: Discussionsupporting

confidence: 79%

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Distribution and Habitat Use of Benthic Fishes in the lower Kanawha River, West Virginia

Owens¹

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Distribution and habitat use of benthic fishes in the lower Kanawha River, West Virginia. Nathaniel Owens The Kanawha River in West Virginia is a historically diverse system in terms of ichthyofauna although like many other large rivers, it has been subjected to a suite of anthropomorphic perturbations. These include this system being modified to allow the passage of commercial vessels for industry thus altering flow regimes, increased sedimentation, water depth, and channelization, and decreased interactions with its floodplain. Additionally, the fishes of this system have suffered from deleterious historical water quality issues caused by intensive timber operations, mining, and industrial waste. Post Clean Air Act, Clean Water Act, and Surface Mining Control and Reclamation Act water quality has substantially improved and assessments of pelagic fishes within this system indicate that they have responded positively. However, due to sampling bias with traditional collection techniques the WVDNR was data deficient on benthic fishes within this nonwadeable system. This study successfully detected seven species that were previously undetected from the Kanawha River proper by implementing benthic otter trawling with the Gerken Siamese Trawl (Innovative Net Systems). In addition to expanding the known distributions of many of West Virginia's benthic fishes within the Kanawha River proper this study was also able to elucidate associations between several benthic fishes and their habitat use in large rivers, indicating that islands may be providing "islands" of habitat that are important to benthic fishes in this system and that physical habitat is likely more influential to benthic fishes' habitat use than water quality.

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Section: Discussionsupporting

confidence: 79%

“…This is the first evidence of Blue Catfish reproduction in West Virginia waters. However, additional monitoring, fecundity, and more extensive population assessments of this species are needed to confirm if this population is naturally viable (Slipke et al 2004;Love et al 2017;Seibert et al 2017).…”

Section: Discussionmentioning

confidence: 99%

Distribution and Habitat Use of Benthic Fishes in the lower Kanawha River, West Virginia

Owens¹

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“…Furthermore, Moody-Carpenter et al (2017) reported no measure of uncertainty around the modeled F, and modeled values for the lower Ohio River were not statistically different from zero. Although differences in gears and catchabilities cannot be excluded as potential explanations for the differences in A, the high value of F (combined exploitation by anglers and commercial fishers) in the Wabash River is a plausible explanation for our observed differences in A. Alternatively, A can be influenced by an array of biotic and abiotic factors (Allen et al 2008;Horppila et al 2010;Forsythe et al 2012;Seibert et al 2017) and inherent differences between river systems or populations.…”

Section: S372mentioning

confidence: 87%

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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“…In their native range, Blue Catfish spawn from April to August (Graham ; Seibert et al. ), and peak spawning occurs during May and June in the Chesapeake Bay region (V. Nepal, unpublished). Age‐0 fish may not fully recruit to our sampling gear until September.…”

Section: Methodsmentioning

confidence: 99%

Density‐Dependence Mediates the Effects of Temperature on Growth of Juvenile Blue Catfish in Nonnative Habitats

Nepal

Fabrizio

2020

Trans Am Fish Soc

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The combined effects of conspecific density and climate warming on the vital rates of invasive fish species have not been well studied, but may be important in predicting how successful they will be in the future. We evaluated the effects of temperature and population density on monthly time series of sizes of age-0 Blue Catfish Ictalurus furcatus in the James, York, and Rappahannock River subestuaries (defined here as tidally influenced bodies of water that feed into the Chesapeake Bay) from 1996 to 2017, using growing degree-days (GDDs,°C day) as a measure of thermal time. Our predictive linear mixed-effects model explained 86% of the variation in the length of age-0 Blue Catfish. In addition, it indicated a strong positive effect of temperature on the growth rate of age-0 Blue Catfish, with individual fish biomass during warm years up to 63% higher than during cool years. Growth rate was influenced negatively by the abundance of age-0 and older fish, resulting in at least fourfold differences in the predicted biomass of Blue Catfish by the end of the first year of life depending on conspecific density. We also observed regional differences in the growth rates of Blue Catfish in the three subestuaries we examined; although growth occurred in all subestuaries, growth was highest for the Rappahannock River population even though this river accumulated the fewest GDDs. Rising water temperatures due to global climate change will likely increase the growth rate of age-0 Blue Catfish in the Chesapeake Bay region, potentially intensifying the negative impacts of this invasive species on the ecology of Chesapeake Bay. However, individual populations respond differently to warming temperatures, and thus, potential increases in the growth rate of age-0 Blue Catfish may be partially offset by local conditions that may serve to limit growth.

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Age‐0 blue catfish habitat use and population demographics in the middle Mississippi River

Cited by 6 publications

References 26 publications

Distribution and Habitat Use of Benthic Fishes in the lower Kanawha River, West Virginia

Distribution and Habitat Use of Benthic Fishes in the lower Kanawha River, West Virginia

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

Density‐Dependence Mediates the Effects of Temperature on Growth of Juvenile Blue Catfish in Nonnative Habitats

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