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Home    Projects     diversity of Cottus

Wanted: Your help to understand the diversity of Cottus in western North America

Sculpin DNA Home | Current Contributions | Collection Particulars | Species of Interest | Phylogeography | Publications and Posters | Briefing Papers | Contact



Updated July 2019. Fishes of the genus Cottus –the sculpins— have long been a challenge for fish managers and ichthyologists in the West. They share streams, rivers, and lakes with trout and salmon, and depend on the same kinds of habitats with relatively cold, clean water. Yet we don’t know how many kinds of sculpins there are. The morphological differences between species are so subtle that even experts are occasionally baffled. Thus, it seems likely that the biodiversity of sculpins in the West is underestimated and unappreciated.

“In our studies of the freshwater cottid fishes of western North America we have encountered four unnamed species. Our systematic review is still incomplete . . .”

 

-- Reeve Bailey & Carl Bond, 1963

“Perhaps no group of fishes occurring in the fresh waters of California has given biologists (including the author) more identification headaches than sculpins.”

 

– Peter Moyle, 2002

“Despite the efforts of generations of ichthyologists, the taxonomy of northwestern Cottus remains tricky.”

 

– J.D. McPhail, 2007

left aquatic image

The last major attempt to understand this diversity was over a half-century ago. With your assistance, we would like to renew the efforts to characterize the sculpins of western North America. As an added benefit, we are developing a host of eDNA assays for different sculpin taxa to assist with defining the extent of the distribution of particular species.

Thanks to your participation, we have received nearly 8,000 specimens from every state and province across western North America. Over 1,500 locations and every described species are represented, we have sequenced 1–4 genes for one or more sculpins from every location, and next-generation sequencing is underway. We have contacted biologists to help us fill in the remaining geographic gaps, but still welcome samples from any location. If you’re a biologist with historical samples, recently collected ones, or are thinking about making collections, we’d be interested in examining some of your fish. We seek tissues from up to 5 individuals (or even 1–2) of all sculpin species from individual sites in any river basin in western North America—the Columbia, Colorado, Fraser, upper Missouri, or coastal river basins, and the Great Basin. The project will be closed to further contributions in October 2019.

sculpin (cottus) diversity photo - right image
Sculpin DNA Contributions Map thumbnail Phylogenetic Trees thumbnail
 

Data wanted: fin clips (on chromatography paper, in coin envelopes, or in ethyl alcohol) or whole-body specimens (in ethyl alcohol), GPS data, date, and your contact information.

To participate and for more details, contact Michael Young (michael.k.young@usda.gov; 406-542-3254)

fin clip - drawing of a sculpin

Sculpin Qwest Publications & Posters


Lemoine, Michael; Young, Michael K.; McKelvey, Kevin S.; Eby, Lisa; Pilgrim, Kristine L.; Schwartz, Michael K. 2014. Cottus schitsuumsh, a new species of sculpin (Scorpaeniformes: Cottidae) in the Columbia River basin, Idaho-Montana, USA. Zootaxa. 3755(3): 241-258.

McKelvey, K. S.; Young, M. K.; Knotek, W. L.; Carim, K. J.; Wilcox, T. M.; Padgett-Stewart, T. M.; Schwartz, M. K. 2016. Sampling large geographic areas for rare species using environmental DNA: A study of bull trout Salvelinus confluentus occupancy in western Montana. Journal of Fish Biology. doi: 10.1111/jfb.12863.

Nicholas B, Young M, Sidlauskas B. 2019. Genetic and morphological evidence suggests cryptic speciation within the Torrent Sculpin, Cottus rhotheus, across the Pacific Northwest. Annual meeting of the Oregon Chapter of the American Fisheries Society, Bend, OR, 7 March 2019.

Wilcox, Taylor M.; McKelvey, Kevin S.; Young, Michael K.; Sepulveda, Adam J.; Shepard, Bradley B.; Jane, Stephen F.; Whiteley, Andrew R.; Lowe, Winsor H.; Schwartz, Michael K. 2016. Understanding environmental DNA detection probabilities: A case study using a stream-dwelling char Salvelinus fontinalis. Biological Conservation. 194: 209-216.

Young, Michael K.; McKelvey, Kevin S.; Pilgrim, Kristine L.; Schwartz, Michael K. 2013. DNA barcoding at riverscape scales: Assessing biodiversity among fishes of the genus Cottus (Teleostei) in northern Rocky Mountain streams. Molecular Ecology. doi: 10.1111/1755-0998.12091.

Young, Micahel K.; Isaak, Daniel J. 2014. Wanted: Your help to understand the diversity of Cottus in western North America. Poster.

Young M, Smith R, Pilgrim K, McKelvey K, Schwartz M, Isaak D, Parkes S, and the SculpinQwest Collaborative. 2019. A molecular reinterpretation of the biodiversity of Cottus in western North America. Annual meeting of the Washington-British Columbia Chapter of the American Fisheries Society, Bremerton, WA, 9 April 2019.

Young M, Smith R, Pilgrim K, McKelvey K, Isaak D, Parkes S, Schwartz M, and the SculpinQwest Collaborative. 2019. Biodiversity of Cottus in western North America: a molecular perspective. Annual meeting of the American Fisheries Society, Reno, NV, 30 September 2019.

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Sculpin Qwest Briefing Papers


  • Detecting Rare Species Using Environmental DNA - Science Briefing
  • DNA Barcoding At Riverscape Scales - Science Briefing

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Other Links


  • Climate-Aquatics Blog #30: Recording & Mapping Earth’s stream biodiversity from genetic samples of critters
  • Climate-Aquatics Blog #53: DNA Barcoding & Fish Biodiversity Mapping
  • Collection Particulars - Protocol document (PDF)
  • The Aquatic eDNAtlas Project

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Sculpin Qwest Contact


Michael K. Young - Research Fisheries Biologist

USFS Rocky Mountain Research Station
Forestry Sciences Lab
800 East Beckwith Avenue
Missoula, MT 59801
Phone: 406-542-3254
michael.k.young@usda.gov

 


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