Reproductive Biology of the Northern Madtom, Noturus stigmosus (Siluriformes: Ictaluridae) from the Licking River, Kentucky

Scheibly, Jonathan F.; Eisenhour, David J.; Eisenhour, Lynn V.

doi:10.3101/1098-7096-69.2.178

Cited by 2 publications

(19 citation statements)

References 10 publications

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“…This result was surprising given that Northern Madtoms are cavity nesters and the 10–20‐cm limestone at each of these reefs would seemingly provide adequate spawning and refuge habitat (MacInnis 1998; Scheibly et al. 2008). However, this result may be attributable to the spatial scale at which our study took place.…”

Section: Discussionmentioning

confidence: 99%

“…Water velocity was included as a factor in the models even though Northern Madtoms have been found in a range of flow conditions (Parsons 1994; Scheibly et al. 2008). As Northern Madtoms are crevice spawners (Taylor 1969; MacInnis 1998; Scheibly et al.…”

Section: Methodsmentioning

confidence: 99%

“…Native to North America, Northern Madtoms can be found in waters of the Ohio River, Mississippi River, and Great Lakes basins (Taylor 1969; Parsons 1994; Scheibly et al. 2008). Northern Madtoms are naturally uncommon and are often found in small, isolated populations (MacInnis 1998; Scheibly et al.…”

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confidence: 99%

“…Northern Madtoms are naturally uncommon and are often found in small, isolated populations (MacInnis 1998; Scheibly et al. 2008). The Northern Madtom is considered extirpated from some of its range, and the species is in decline in the northern part of its range (Goodchild 1993; Holm and Mandrak 1998; Latta 2005).…”

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confidence: 99%

“…Although Northern Madtoms are cavity nesters (Taylor 1969; MacInnis 1998), they have been documented using mud, sand, gravel, and rock substrates for spawning (Scheibly et al. 2008; Manny et al. 2014).…”

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confidence: 99%

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Northern Madtom Use of Artificial Reefs in the St. Clair–Detroit River System

Johnson

Chiotti

Briggs

et al. 2021

N American J Fish Manag

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The St. Clair and Detroit rivers historically supported abundant fish populations. However, like many river systems, these rivers have been greatly altered through the creation of navigation channels and other anthropogenic disturbances, resulting in the loss of fish and wildlife habitat and declines in native fish populations. To ameliorate this environmental degradation, artificial fish spawning reefs were constructed in the St. Clair and Detroit rivers. One native species to potentially benefit from artificial reefs is the Northern Madtom Noturus stigmosus, a small ictalurid that is listed as endangered in the state of Michigan and the province of Ontario. Between 2016 and 2018, artificial reefs and nearby control sites were sampled in the St. Clair and Detroit rivers to compare the number of Northern Madtoms. In total, 171 Northern Madtoms were captured in 1,848 minnow traps with one of four bait types: cheese, dog food, worms, or control (no bait). Baited minnow traps successfully captured Northern Madtoms in the fast‐flowing, deep water of the St. Clair–Detroit River system, and catch rates were significantly higher when traps were baited with worms. The number of Northern Madtoms captured was lower in the Detroit River than in the St. Clair River and increased with increasing water temperature and turbidity. Artificial reefs constructed in the St. Clair–Detroit River system are providing habitat for Northern Madtoms; however, use did not differ between reef sites and nearby control sites. This work provides insight regarding sampling strategies to target Northern Madtoms in large‐river systems and highlights the importance of incorporating a temporal sampling strategy into survey design.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Northern Madtom Use of Artificial Reefs in the St. Clair–Detroit River System

Johnson

Chiotti

Briggs

et al. 2021

N American J Fish Manag

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Biological Investigation of the Endangered Northern Madtom in the North Channel St. Clair River

Utrup

Hessenauer

Briggs

et al. 2023

N American J Fish Manag

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Aquatic organisms and the habitats they live in are declining globally, yet managers often lack even basic biological information for individual imperiled species. This makes assessment of the current status, management needs, and recovery targets for these species challenging. One such organism is the Northern Madtom Noturus stigmosus, a small, bottom-dwelling catfish of the family Ictaluridae. Northern Madtom are listed as endangered in the state of Michigan and the province of Ontario, with only a handful of isolated populations known in each region. To address life history uncertainties and to provide fisheries managers with baseline information to inform decision making, the Michigan Department of Natural Resources annually sampled Northern Madtom in the St. Clair River using minnow traps and amassed the largest known data set for this species. We handled 871 individuals from 2010 to 2022, with yearly catch rates ranging from 0.17 to 1.33 individuals/trap. Age estimates derived from otoliths and dorsal spines of 17 individuals showed no clear pattern of bias, indicating that nonlethally collected dorsal spines provide a suitable age estimation method. We developed an age-length key to assign ages to all individuals in our data set, calculated growth parameters, and determined that annual mortality rates across all ages ranged from 46% to 69%. Diet analysis revealed that caddisfly (order Trichoptera) larvae were the dominant prey item and fecundity averaged 178 eggs/ female. We compared microsatellite allele frequencies and mitochondrial DNA haplotypes among samples collected in the St. Clair River and the Detroit River. Significant evidence of genetic structure was present, indicating limited gene flow and suggesting that separate management of these two populations may be warranted. Collectively, these data provide context for managers interested in the development of biological reference points and planning for the conservation and management of this species.

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Reproductive Biology of the Northern Madtom, Noturus stigmosus (Siluriformes: Ictaluridae) from the Licking River, Kentucky

Cited by 2 publications

References 10 publications

Northern Madtom Use of Artificial Reefs in the St. Clair–Detroit River System

Northern Madtom Use of Artificial Reefs in the St. Clair–Detroit River System

Biological Investigation of the Endangered Northern Madtom in the North Channel St. Clair River

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