Discovery of Noturus baileyi and N. flavipinnis in Citico Creek, Little Tennessee River System

Bauer, Bruce H.; Dinkins, Gerry R.; Etnier, David A.

doi:10.2307/1444412

Cited by 5 publications

(2 citation statements)

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“…As mentioned by Coad (1986) and documented by Trautman (1981) and Bauer et al (1983), populations of species of Noturus may fluctuate depending on spawning success. Collection of specimens may also contribute to depletion of populations already low in numbers.…”

Section: Limiting Factorsmentioning

confidence: 89%

“…Madtoms may often be present in quite low numbers. Populations fluctuate wildly and are dependent on spawning success from year to year (Trautman 1981;Bauer et al 1983), therefore it is difficult to assess their numbers and status. Coad (1986) suggests the initial collecting expeditions may have even contributed to depletion of Margined Madtom populations in Canada.…”

Section: Population Sizes and Trendsmentioning

confidence: 99%

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Status of the Margined Madtom, Noturus insignis, in Canada

Goodchild

1990

The Canadian Field-Naturalist

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The Margined Madtom, Noturus insignis, is classified as threatened in Canada. In the early 1970s, it was first reported from isolated areas of the Ottawa River drainage in Ontario and Quebec, disjunct from the extreme northern fringe of its range in the United States. Its occurrence in Canada may be the result of accidental introduction of baitfish by anglers or of dispersal from New York State through the St. Lawrence River watershed. The population may be declining as attempts to recapture Margined Madtom in the 1980s were largely unsuccessful despite exhaustive sampling. Low numbers, fluctuations in spawning success and extremely specialized habitat requirements make this species' continued existence in Canada particularly perilous.Le chat-fou lisére, Noturus insignis, doit étre classé parmi les espéces menacées au Canada. Au début des années 1970, ce poisson a été pour la premiére fois signalé dans des zones isolé, du bassin versant de la rivi¢re des Outaouais en Ontario et au Québec, ce qui marque donc une discontinuité par rapport a la limite la plus septentrionale de son aire de répartition aux Etats-Unis. Cette espéce a peut-étre été introduite accidentellement au Canada comme poisson d'appat utilisé par les pécheurs sportifs ou bien elle s'est dispersée a partir de l'Etat de New York 4 travers le bassin versant du St-Laurent. La population de cette espéce est peut-étre en train de décliner puisque, dans les années 1980, on n'a pas bien réussi a recapturer le chat-fou lisére malgré les travaux d'échantillonnage exhaustifs. Le petit nombre de ces poissons, les fluctuations dans la réussite de la ponte et les conditions trés spéciales qu'exige leur habitat rendent cette espéce particuli¢rement vulnérable.

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Section: Limiting Factorsmentioning

confidence: 89%

Section: Population Sizes and Trendsmentioning

confidence: 99%

Status of the Margined Madtom, Noturus insignis, in Canada

Goodchild

1990

The Canadian Field-Naturalist

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Development of a ddPCR assay for the detection of the Smoky Madtom (Noturus baileyi) from eDNA in stream water samples

Aunins

Eackles

Super³

et al. 2022

Conservation Genet Resour

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The Smoky Madtom Noturus baileyi is a federally endangered species, whose native distribution includes lower Abrams Creek in Great Smoky Mountains National Park (GRSM) and Citico Creek in nearby Cherokee National Forest. Due to challenges for bio-monitoring posed by its nocturnality and cryptic life history, an environmental DNA (eDNA)-based approach for detection would be useful to complement existing electrofishing and seining efforts to better understand the distribution of this species. We developed a probe-based droplet digital PCR (ddPCR) assay to detect Smoky Madtoms from non-invasively collected water samples. The assay was specific to N. baileyi and did not amplify concentrated genomic DNA of 16 co-occurring or regional fish species, including the yellowfin madtom N. flavipinnis and stonecat N. flavus. The assay limit of detection (LOD) was determined to be 4.18 copies (95% CI: 3.95, 4.41). Several 2 L water samples collected from throughout various streams in GRSM in 2016 and 2017 were tested for the presence of N. baileyi using the ddPCR assay. N. baileyi was detected at two different sites in 2016 and 2017 within Abrams Creek previously known to contain N. baileyi, but no novel detections in other sampled streams were observed. This assay should prove useful for continued surveys of N. baileyi in GRSM.

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