Occurrence, habitat, and movements of the endangered northern madtom (Noturus stigmosus) in the Detroit River, 2003–2011

Manny, Bruce A.; Daley, Bryon A.; Boase, James C.; Horne, Ashlee N.; Chiotti, Justin A.

doi:10.1016/j.jglr.2014.01.005

Cited by 12 publications

(31 citation statements)

References 18 publications

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“…Moreover, both seines and dipnets likely became less effective in complex habitats (e.g., rocky or woody debris), which are typically inhabited by large madtoms (Froese & Pauly, 2017 (Ross, 2001). Previous research has successfully documented the presence of Northern Madtom (Noturus stigmosus Taylor) using minnow traps (Conrad, 2015;Manny et al, 2014), potentially because they sample overnight during periods of high activity for madtoms (Bennett et al, 2008;McInerny & Cross, 2005). Like seines, the smallest individuals of each species were captured using dipnets (McClanahan & Mangi, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Minnow traps are not a standard survey method, but were used as no passive gear has been historically used to sample madtoms in streams of this region. Minnow traps fish overnight, which includes periods of high activity for madtoms (Bennett, Kuhajda, & Howell, ; McInerny & Cross, ) and have successfully been used to document the presence of Northern Madtom ( Noturus stigmosus Taylor; Manny, Daley, Boase, Horne, & Chiotti, ; Conrad, ).…”

Section: Methodsmentioning

confidence: 99%

“…Minnow traps fish overnight, which includes periods of high activity for madtoms (Bennett, Kuhajda, & Howell, 2008;McInerny & Cross, 2005) and have successfully been used to document the presence of Northern Madtom (Noturus stigmosus Taylor; Manny, Daley, Boase, Horne, & Chiotti, 2014;Conrad, 2015).…”

Section: Sampling Gears and Fish Collectionmentioning

confidence: 99%

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Gear effectiveness and size selectivity for five cryptic madtom species ( Noturus spp.)

2019

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More than half of the diminutive North American catfish species known as madtoms (Noturus spp.) are considered imperiled due to range reductions from habitat fragmentation and degradation. In response, government agencies regularly conduct sampling that targets these cryptic fishes. Unfortunately, the effectiveness and biases associated with common sampling gears has rarely been quantified for non‐game fish, including madtoms. To improve sampling protocols for diverse madtom species, we: (a) quantified the detection probabilities and effort necessary to detect five species of madtom with relative certainty using complimentary sampling gears, and (b) described biases associated with size‐selectivity of the same gears when used to sample madtoms. Five madtom species that are native to Mississippi streams and have two distinct coloration patterns were selected: uniform pattern, Brown Madtom (Noturus phaeus) and Freckled Madtom (Noturus nocturnus); patterned, Piebald Madtom (Noturus gladiator), Least Madtom (Noturus hildebrandi), and Brindled Madtom (Noturus miurus). These species were captured using four standardized sampling gears (i.e., backpack electrofisher, seine, dipnet, and Gee‐style minnow trap) from 13 isolated stream reaches in Mississippi during baseflow conditions between August and November 2016. Each gear was randomly assigned to up to five transects at each site resulting in a maximum of 20 unique samples per stream reach. We estimated the detection probability of each species with each gear using presence–absence capture data. Cumulative detection probabilities were calculated for each species and gear combination to describe the number of samples necessary to achieve a detection probability of 0.95. Additionally, we pooled all capture data across sampling sites to compare madtom size distributions among gears. Electrofishing was generally the most efficient gear for detecting madtoms, but slightly overestimated fish size distributions. By seining, managers can expect to capture all species evaluated with a modest amount of effort; however, are likely to catch relatively small individuals. Seining was the most effective gear for only Piebald Madtom, a species petitioned for listing under the Endangered Species Act. To be relatively certain that Piebald Madtom are absent from a stream reach would require sampling ten 100 m transects by seining. In contrast, the same certainty would require more than twenty 100 m electrofishing transects. Minnow traps and dipnetting generally performed poorly and failed to detect some species at occupied sites. Biologists can now consider using each of these complimentary gears assessed when evaluating species status and population structure for diverse madtom species, while explicitly acknowledging the biases associated with each gear.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Gear effectiveness and size selectivity for five cryptic madtom species ( Noturus spp.)

2019

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“…The present population trajectory and movement patterns of northern madtom in the St. Clair and Thames rivers are unknown because of the lack of standardized monitoring of historical and present‐day northern madtom populations. Recent mark–recapture work in the Detroit River has recaptured several marked northern madtom between 100 m and 2 km from their original release site (Manny et al, ). Given these challenges, the interpretations of modelled occupancy from this study are specific to the sampled water bodies and are representative of northern madtom habitat use, rather than occupancy in itself.…”

Section: Methodsmentioning

confidence: 99%

“…pesticides and herbicides), physical habitat loss, exotic species, and climate change as either widespread or localized threats in areas where northern madtom occur (Edwards et al, ); however, illustrating the broader challenges of developing scientifically defensible recovery strategies for imperilled freshwater species, empirical support of critical habitat and threats to the persistence of northern madtom is lacking. Owing to their small body size, low population densities, cavity‐dwelling behaviour, and discontinuous distribution in the benthic habitat of large lake and river systems (Manny, Daley, Boase, Horne, & Chiotti, ), sampling northern madtom is difficult. Therefore, this study sought to quantify habitat associations and threats to the northern madtom to inform species recovery strategies, while controlling for the challenge of imperfect detection.…”

Section: Introductionmentioning

confidence: 99%

Abiotic and biotic associations between the round gobyNeogobius melanostomusand tubenose gobyProterorhinus marmoratuswith the endangered northern madtomNoturus stigmosusin Canada

Lamothe

Ziegler

Gaspardy

et al. 2020

Aquatic Conservation

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1. Quantifying habitat associations and threats to the persistence of imperilled species is a fundamental step for initiating species recovery efforts, but the traits associated with species imperillment (e.g. rarity and vulnerability to stressors) also limit the ability to empirically inform recovery strategies. Novel sampling designs and modelling approaches are therefore needed to quantitatively assess habitat associations and the threats to species persistence. 2. To improve the understanding of habitat associations and threats for one of the rarest endangered freshwater fish species in Canada, northern madtom (Noturus stigmosus), two-species occupancy models were developed with two invasive gobies: round goby (Neogobius melanostomus) and tubenose goby (Proterorhinus marmoratus). Models were parameterized with data from a multi-year benthic trawling survey of two large Great Lakes tributaries in southern Ontario, Canada, and subsequently used to evaluate the need for reducing measurement error with future sampling efforts. 3. The probability of detecting northern madtom in the St. Clair (0.163) and Thames (0.194) rivers was low compared with round goby (St. Clair, 0.827; Thames, 0.833) and tubenose goby (St. Clair, 0.297). The best occupancy models indicated a negative association between northern madtom and round goby in the St. Clair River and the importance of gravel substrate for northern madtom. 4. Up to 16 repeated non-detections using benthic trawls are needed to be 95% confident that northern madtom is absent at a site, indicating that current sampling approaches are likely inadequate. 5. Despite low detection probabilities, intensive trawling surveys combined with the two-species occupancy modelling framework provided vital information for describing habitat associations for northern madtom and identified a significant negative association with round goby. Nonetheless, alternative sampling methods Reproduced with the permission of the Minister of Fisheries and Oceans Canada

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Size and Age of Stonecats in Lake Champlain; Estimating Growth at the Margin of their Range to Aid in Population Management

Puchala

Parrish

Ogle

2018

N American J Fish Manag

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Little is known about populations of Stonecat Noturus flavus, especially in the northeastern United States, where they are at the edge of their range. In Lake Champlain tributaries, Stonecats are listed as endangered in Vermont but not in New York. Here we describe the growth of Stonecats in two tributaries to Lake Champlain, one in Vermont (LaPlatte River), which was our primary interest, and one in New York (Great Chazy River), with von Bertalanffy growth models fit to lengths at the times of marking and recapture and to observed length and age data. We also compared growth of Stonecats in these waters to results from other locations near the middle of their distribution. Stonecats in the Great Chazy River were larger at ages 1-3, but similar in size for ages 4 and 5, than Stonecats from the LaPlatte River. Stonecats in Lake Champlain tributaries were generally larger at age than those from the middle of their range, except for those from Lake Erie. From our mean length-at-age results and previous literature estimates of length at maturity for Stonecats, it appears that Stonecats in Lake Champlain reach maturity by age 3, though future research that directly estimates age at maturity would be more informative. These results will help managers assess the effect of various environmental and human stressors that Stonecats have experienced in the Lake Champlain basin in recent years. Furthermore, our results expand the literature, which lacks information about growth of this species. Finally, our mark-recapture approach to estimating growth of Stonecats can be applied to other species, especially where data are limited because of their status, and in other systems.

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Occurrence, habitat, and movements of the endangered northern madtom (Noturus stigmosus) in the Detroit River, 2003–2011

Cited by 12 publications

References 18 publications

Gear effectiveness and size selectivity for five cryptic madtom species ( Noturus spp.)

Gear effectiveness and size selectivity for five cryptic madtom species ( Noturus spp.)

Abiotic and biotic associations between the round gobyNeogobius melanostomusand tubenose gobyProterorhinus marmoratuswith the endangered northern madtomNoturus stigmosusin Canada

Size and Age of Stonecats in Lake Champlain; Estimating Growth at the Margin of their Range to Aid in Population Management

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