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1

Rasmussen, Josh E. "Status of Lost River Sucker and Shortnose Sucker." Western North American Naturalist 71, no. 4 (December 2011): 442–55. http://dx.doi.org/10.3398/064.071.0402.

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2

Rasmussen, Josh E., and Evan S. Childress. "Population Viability of Endangered Lost River Sucker and Shortnose Sucker and the Effects of Assisted Rearing." Journal of Fish and Wildlife Management 9, no. 2 (December 1, 2018): 582–92. http://dx.doi.org/10.3996/032018-jfwm-018.

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Abstract The Lost River Sucker Deltistes luxatus and Shortnose Sucker Chasmistes brevirostris are two narrowly endemic fish species in the upper Klamath Basin of southern Oregon and northern California. Both species have been federally listed as endangered pursuant to the U.S. Endangered Species Act since 1988 because of dramatic declines in abundance and distribution. In Upper Klamath Lake, Oregon, both species have only recruited a single cohort to the adult populations since that time. Most individuals in this population are at or older than the expected life span of the species. Consequently, the U.S. Fish and Wildlife Service and the Klamath Tribes have initiated assisted rearing efforts to stabilize the population. However, it is unclear how quickly these populations might become extirpated and how assisted rearing might alter population trajectories. We modeled the potential for extinction and recovery of the populations of endangered Lost River Sucker and Shortnose Sucker in Upper Klamath Lake. We simulated population trajectories over the next 50 y with a stochastic population viability assessment approach. Projections indicate that if population trajectories do not change, the Shortnose Sucker population may decline by 78% to number < 5,000 in 10 y and become completely extirpated within the next 30 (18.6% probability) to 40 y (99% probability). The two Lost River Sucker populations have a greater likelihood to remain extant after 50 y, with only 1% probability of extinction given our scenarios and assumptions, but the populations are likely to number fewer than 1,000 individuals. Our results also suggest that rearing of Klamath Lake sucker species in a controlled environment for augmenting the natural population will be effective in reducing extirpation probabilities over the next 50 y if survival to recruitment can be achieved, but a long-term effort of at least 40 y will be required. The necessity of long-term augmentation to ensure population persistence in the absence of natural recruitment underscores the urgent need to determine and address the causes of recruitment failure in the wild.
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3

Janney, Eric C., Rip S. Shively, Brian S. Hayes, Patrick M. Barry, and David Perkins. "Demographic Analysis of Lost River Sucker and Shortnose Sucker Populations in Upper Klamath Lake, Oregon." Transactions of the American Fisheries Society 137, no. 6 (November 2008): 1812–25. http://dx.doi.org/10.1577/t06-235.1.

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4

Day, Julie L., Jennifer L. Jacobs, and Josh Rasmussen. "Considerations for the Propagation and Conservation of Endangered Lake Suckers of the Western United States." Journal of Fish and Wildlife Management 8, no. 1 (March 1, 2017): 301–12. http://dx.doi.org/10.3996/022016-jfwm-011.

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Abstract Decades of persistent natural and anthropogenic threats coupled with competing water needs have compromised numerous species of freshwater fishes, many of which are now artificially propagated in hatcheries. Low survival upon release is common, particularly in systems with substantial nonnative predator populations. Extensive sampling for Shortnose (Chasmistes brevirostris) and Lost River Suckers (Deltistes luxatus) in the Klamath River Basin on the California–Oregon border have failed to detect any new adult recruitment for at least two decades, prompting an investigation into artificial propagation as an extinction prevention measure. A comprehensive assessment of strategies and successes associated with propagation for conservation restocking has not been performed for any Catostomid. Here, we review available literature for all western lake sucker species to inform propagation and recovery efforts for Klamath suckers and summarize the relevance of these considerations to other endangered fishes.
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5

Burdick, Summer M., Heather A. Hendrixson, and Scott P. VanderKooi. "Age-0 Lost River Sucker and Shortnose Sucker Nearshore Habitat Use in Upper Klamath Lake, Oregon: A Patch Occupancy Approach." Transactions of the American Fisheries Society 137, no. 2 (February 2008): 417–30. http://dx.doi.org/10.1577/t07-072.1.

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6

Day, Julie L., Ron Barnes, Darrick Weissenfluh, J. Kirk Groves, and Kent Russell. "Successful Collection and Captive Rearing of Wild-Spawned Larval Klamath Suckers." Journal of Fish and Wildlife Management 12, no. 1 (December 7, 2020): 216–22. http://dx.doi.org/10.3996/jfwm-20-059.

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Abstract Shortnose Chasmistes brevirostris and Lost River Suckers Deltistes luxatus endemic to the Klamath River Basin on the California–Oregon border have experienced dramatic population declines in parallel with many other Catostomid species. Captive propagation has become a key element of many endangered fish recovery programs, although there is little evidence of their success in restoring or recovering fish populations. We initiated a novel rearing program for Klamath suckers in 2016 with the goal of developing a husbandry strategy that better balances the ecological, genetic, and demographic risks associated with captive propagation. We collected 4,306 wild-spawned Klamath sucker larvae from a major spawning tributary May–June 2016 and reared them at a geothermal facility established through a partnership with a local landowner and aquaculture expert. Mortality during collection was <1%. We reared larvae in glass aquaria for 17–78 d until they reached approximately 30 mm total length, upon which we moved them to round fiberglass tanks for 14–46 d or until reaching approximately 60 mm total length. Overall survival of larvae to ponding for final growout was 71%. Larval tank-rearing survival was 98% for 37 d until an isolated fish health incident affected three aquarium populations, reducing survival to transfer to 75%. Survival after transfer to round fiberglass tanks for 14–46 d was 94%. This study outlines the first successful collection and early life-history husbandry of wild-spawned endangered Klamath suckers that we are aware of.
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7

Cooperman, Michael, and Douglas F. Markle. "Rapid Out-Migration of Lost River and Shortnose Sucker Larvae from In-River Spawning Beds to In-Lake Rearing Grounds." Transactions of the American Fisheries Society 132, no. 6 (November 2003): 1138–53. http://dx.doi.org/10.1577/t02-130.

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8

Markle, Douglas F., Mark R. Terwilliger, and David C. Simon. "Estimates of daily mortality from a neascus trematode in age-0 shortnose sucker (Chasmistes brevirostris) and the potential impact of avian predation." Environmental Biology of Fishes 97, no. 2 (April 19, 2013): 197–207. http://dx.doi.org/10.1007/s10641-013-0141-7.

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9

Robertson, Laura S., Christopher A. Ottinger, Summer M. Burdick, and Scott P. VanderKooi. "Development of a quantitative assay to measure expression of transforming growth factor β (TGF-β) in Lost River sucker (Deltistes luxatus) and shortnose sucker (Chasmistes brevirostris) and evaluation of potential pitfalls in use with field-collected samples." Fish & Shellfish Immunology 32, no. 5 (May 2012): 890–98. http://dx.doi.org/10.1016/j.fsi.2012.02.017.

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10

Banish, Nolan P., Barbara J. Adams, Rip S. Shively, Michael M. Mazur, David A. Beauchamp, and Tamara M. Wood. "Distribution and Habitat Associations of Radio-Tagged Adult Lost River Suckers and Shortnose Suckers in Upper Klamath Lake, Oregon." Transactions of the American Fisheries Society 138, no. 1 (January 2009): 153–68. http://dx.doi.org/10.1577/t07-252.1.

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11

Hoff, Gerald R., Daniel J. Logan, and Douglas F. Markle. "Notes: Otolith Morphology and Increment Validation in Young Lost River and Shortnose Suckers." Transactions of the American Fisheries Society 126, no. 3 (May 1997): 488–94. http://dx.doi.org/10.1577/1548-8659(1997)126<0488:nomaiv>2.3.co;2.

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12

Hoy, M. S., and C. O. Ostberg. "Development of 20 TaqMan assays differentiating the endangered shortnose and Lost River suckers." Conservation Genetics Resources 7, no. 3 (May 17, 2015): 673–76. http://dx.doi.org/10.1007/s12686-015-0474-y.

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13

Evans, Allen F., David A. Hewitt, Quinn Payton, Bradley M. Cramer, Ken Collis, and Daniel D. Roby. "Colonial Waterbird Predation on Lost River and Shortnose Suckers in the Upper Klamath Basin." North American Journal of Fisheries Management 36, no. 6 (October 7, 2016): 1254–68. http://dx.doi.org/10.1080/02755947.2016.1208123.

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14

Saiki, M. K., D. P. Monda, and B. L. Bellerud. "Lethal levels of selected water quality variables to larval and juvenile Lost River and shortnose suckers." Environmental Pollution 105, no. 1 (April 1999): 37–44. http://dx.doi.org/10.1016/s0269-7491(98)00212-7.

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15

Burdick, Summer M., David A. Hewitt, Barbara A. Martin, Liam Schenk, and Stewart A. Rounds. "Effects of harmful algal blooms and associated water-quality on endangered Lost River and shortnose suckers." Harmful Algae 97 (July 2020): 101847. http://dx.doi.org/10.1016/j.hal.2020.101847.

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16

Cooperman, Michael S., and Douglas F. Markle. "Abundance, size, and feeding success of larval shortnose suckers and Lost River suckers from different habitats of the littoral zone of Upper Klamath Lake." Environmental Biology of Fishes 71, no. 4 (December 2004): 365–77. http://dx.doi.org/10.1007/s10641-004-4181-x.

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17

Cooperman, Michael S., Douglas F. Markle, Mark Terwilliger, and David C. Simon. "A production estimate approach to analyze habitat and weather effects on recruitment of two endangered freshwater fish." Canadian Journal of Fisheries and Aquatic Sciences 67, no. 1 (January 2010): 28–41. http://dx.doi.org/10.1139/f09-165.

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Factors affecting the early life survival of fishes are often difficult to demonstrate because variable immigration and mortality rates coupled with noncontinuous sampling may confound estimates of mortality and bias inference to more numerous smaller individuals. The larval production estimate (LPE) method eliminates these problems by compensating catch data for size- or age-specific mortality and growth and back-calculating abundance at a predetermined size or age. Despite its utility, LPE has not been widely applied in studies of freshwater fish recruitment. We executed an LPE analysis using 10–14 mm and 15–19 mm size classes of Upper Klamath Lake’s (UKL) endangered Lost River suckers ( Deltistes luxatus ) and shortnose suckers ( Chasmistes brevirostris ) for five cohorts per year for 1995–2001. Larval survival peaked when habitat conditions included high availability of emergent macrophytes as habitat (>15 000 m3), air temperatures between 14 and 22 °C, and a low frequency of wind speeds >16 km·h–1. Age-0 juvenile suckers collected later in each year corroborated results of the LPE analysis, as most (88%) juveniles had otolith-estimated swim-up dates corresponding to early life rearing under the specified habitat conditions. Our results support the management practice of maintaining higher than natural UKL water surface elevations through the larval rearing period.
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18

Crandall, John D., Leslie B. Bach, Nathan Rudd, Mark Stern, and Matt Barry. "Response of Larval Lost River and Shortnose Suckers to Wetland Restoration at the Williamson River Delta, Oregon." Transactions of the American Fisheries Society 137, no. 2 (February 2008): 402–16. http://dx.doi.org/10.1577/t06-196.1.

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19

Terwilliger, Mark R., Douglas F. Markle, and Jacob Kann. "Associations between Water Quality and Daily Growth of Juvenile Shortnose and Lost River Suckers in Upper Klamath Lake, Oregon." Transactions of the American Fisheries Society 132, no. 4 (July 2003): 691–708. http://dx.doi.org/10.1577/t00-172.

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20

Terwilliger, Mark R., Tamal Reece, and Douglas F. Markle. "Historic and recent age structure and growth of endangered Lost River and shortnose suckers in Upper Klamath Lake, Oregon." Environmental Biology of Fishes 89, no. 3-4 (July 13, 2010): 239–52. http://dx.doi.org/10.1007/s10641-010-9679-9.

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21

Wiratama, Rozy Aditya, Rakiman Rakiman, and Eka Sunitra. "Perakitan Sensor Asap Pada Alat Penyaring Asap Untuk Mengontrol Fan Secara Otomatis." Jurnal Teknik Mesin 12, no. 1 (July 12, 2019): 6–9. http://dx.doi.org/10.30630/jtm.12.1.186.

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Starting from the events on the island of Sumatra that often experience forest fires and result in the emergence of smog that can disrupt the respiratory tract in living things, especially in humans. Thus resulting in the emergence of diseases such as ispa, shortness of breath, and other diseases. This is caused by polluted air because the concentration of oxygen (O2) is only a few percent compared to air containing carbon dioxide (CO2), carbon monoxide (CO), sulfide (S2) and other combustion substances. The smoke sensor is useful for activating the fan on the smoke filter tool automatically, the Fan functions as a smoke suction to be forwarded to the room where the smoke is filtered. The workings of this tool are, when the sensor reads the smoke content on the tool more than 140 ppm, then the relay connected to the fan will activate and make the fan spin. After the fan or fan lives, then the smoke will be sucked into a tube, where the tube has a small hose at the end, then the smoke is released at the end of the hose, where the end of the hose is soaked in a container containing water, where the air will be filtered. The results of the filter are sucked back by the fan or fan in another room. If the smoke level has fallen below the threshold of 140 ppm, the fan will automatically die.
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22

Ottinger, Christopher A., Christine L. Densmore, Laura S. Robertson, Deborah D. Iwanowicz, and Scott P. VanderKooi. "Transforming growth factor-β1 expression in endangered age-0 shortnose suckers (Chasmistes brevirostris) from Upper Klamath Lake, OR relative to histopathology, meristic, spatial, and temporal data." Fish & Shellfish Immunology 49 (February 2016): 1–6. http://dx.doi.org/10.1016/j.fsi.2015.12.019.

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23

Ellsworth, Craig M., Torrey J. Tyler, and Scott P. VanderKooi. "Using spatial, seasonal, and diel drift patterns of larval Lost River suckers Deltistes luxatus (Cypriniformes: Catostomidae) and shortnose suckers Chasmistes brevirostris (Cypriniformes: Catostomidae) to help identify a site for a water withdrawal structure on the Williamson River, Oregon." Environmental Biology of Fishes 89, no. 1 (August 3, 2010): 47–57. http://dx.doi.org/10.1007/s10641-010-9688-8.

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24

"Erratum: “Status of Lost River Sucker and Shortnose Sucker” (2011)." Western North American Naturalist 72, no. 4 (December 2012): 595. http://dx.doi.org/10.3398/064.072.0417.

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