Capturing and Tagging Wild Age-0 and Age-1 Paddlefish in a Great Plains Reservoir

Scarnecchia, Dennis L.; Ryckman, L. Fred; Lee, Jason

doi:10.1577/1548-8675(1997)017<0800:catwaa>2.3.co;2

Cited by 10 publications

(9 citation statements)

References 5 publications

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“…Fish detect their prey with a passive electrosensory system in their rostrum, head, and opercula, described by Wilkens et al (2002). Observations of fish near the surface (Fredericks and Scarnecchia, 1997;Scarnecchia et al, 1997) indicate that age 0 fish are most concentrated near the reservoir headwaters. By late fall or the following summer, and for the rest of their life, paddlefish filter-feed on a wide variety of zooplankton and other invertebrates (Michaletz et al, 1982;Fredericks, 1994;Fredericks and Scarnecchia, 1997) with the aid of long, filamentous gill rakers (Kofoid, 1900;Imms, 1904).…”

Section: Yellowstone-sakakawea Paddlefish Stock Characteristicsmentioning

confidence: 99%

“…Sampling of habitat and zooplankton was concentrated in the upper third of the reservoir because observable concentrations of age 0 and age 1 paddlefish are highest in this portion of the reservoir (Fredericks, 1994;Fredericks and Scarnecchia, 1997;Scarnecchia et al, 1997). Roush et al (2003) also found hatchery-reared age 0 paddlefish implanted with ultrasonic transmitters in Lake Francis Case, South Dakota, remained in the upper portion of that reservoir.…”

Section: Reservoir Physical Characteristics and Zooplanktonmentioning

confidence: 99%

“…Growth and condition of age 0 paddlefish were estimated from fish captured with dip nets during August (Fredericks and Scarnecchia, 1997;Scarnecchia et al, 1997). Catches in August were grouped into four weekly periods.…”

Section: Age 0 Fishmentioning

confidence: 99%

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Riverine and Reservoir Influences on Year Class Strength and Growth of Upper Great Plains Paddlefish

Scarnecchia

Ryckman

Lim

et al. 2009

Reviews in Fisheries Science

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A long-term investigation (1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006) was conducted on the relation between Yellowstone and Missouri River discharges, water level (elevation) changes of Lake Sakakawea, a Missouri River mainstem reservoir in western North Dakota, and the ecology of the Yellowstone-Sakakawea stock of paddlefish Polyodon spathula, a zooplanktivorous Acipenseriform fish. After impoundment in December 1953, Lake Sakakawea filled gradually over a 13-year period (1953-1966). Water levels were lowered sharply and briefly in 1977 and 1981 and for much more prolonged periods of 1988-1993 and 2000-2006 associated with drought conditions in the central United States and water management decisions by the U.S. Army Corps of Engineers.The 1995 year class of paddlefish, by far the strongest in the 16-year study period, was associated with the sharp rise in water level from August 1993 through 1995, the longest continuous rise since the initial filling and the only period since initial filling when reservoir levels rose substantially in three consecutive years. High reservoir levels were associated with higher densities of zooplankton (all taxa combined and Leptodora kindtii, the primary food of age 0 paddlefish), stronger year classes (based on counts of age 0 fish along standard transects), greater mean weight and condition of age 0 fish in August, greater mean weights of recruits, higher growth rate of adult fish, and greater weight of gonadal fat bodies (GFBs), an indicator of energy storage, in absolute weight, as a percentage of gonad weight, and as a percentage of fish weight. Sixty-three percent of the variation in the ratio of GFB weight/gonad weight was explained by reservoir level. Fish tagged as adult migrants and recaptured in succeeding years after rearing in rising and high reservoir conditions gained an average of 0.04 kg/yr, whereas fish rearing in falling-and low-reservoir conditions lost an average of 0.19 kg/yr. Missouri River discharge during spring was significantly correlated with estimated age 0 year class strength, but a similar relationship did not hold for the Yellowstone River, which is the river used by most spawning paddlefish. Results of this study are consistent with studies from Lake Sakakawea and other reservoirs indicating that trophic upsurge in recently filled (and refilled) reservoirs favors the development of stronger year classes, faster growth, better condition, and larger size at maturity of fishes. Higher riverine discharges, thought to favor paddlefish reproductive success, were also typically associated with a rising or high reservoir. In contrast, low-reservoir levels over the period [2000][2001][2002][2003][2004][2005][2006] have negatively affected paddlefish year class strength, growth, and energy storage. If, in succeeding years, Lake Sakakawea once again is allowed to rise to full pool as it did over the period 1993-1995, inundation of the shorelines and the vegetation can be expected to result in another ups...

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Section: Yellowstone-sakakawea Paddlefish Stock Characteristicsmentioning

confidence: 99%

Section: Reservoir Physical Characteristics and Zooplanktonmentioning

confidence: 99%

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Riverine and Reservoir Influences on Year Class Strength and Growth of Upper Great Plains Paddlefish

Scarnecchia

Ryckman

Lim

et al. 2009

Reviews in Fisheries Science

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“…The reservoir has a diverse fish community of at least 53 species (Berard 1989 The study site was the upper portion of Lake Sakakawea between river kilometer (RKM) 2,385 from the confluence with the Mississippi River and RKM 2,467, which encompassed the transitional area from a river to reservoir environment. This site was chosen because it was a known age-0 paddlefish rearing area (Fredericks 1994;Fredericks and Scarnecchia 1997;Scarnecchia et al 1997) where fish predation on age-0 paddlefish was previously documented (Mero et al 1994).…”

Section: Study Sitementioning

confidence: 99%

Predation on Age-0 Paddlefish by Walleye and Sauger in a Great Plains Reservoir

Parken

Scarnecchia

2002

North American Journal of Fisheries Management

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From July to October 1994 and 1995, the food habits of walleye Stizostedion vitreum, sauger S. canadense, northern pike Esox lucius, and channel catfish Ictalurus punctatus were studied in Lake Sakakawea, a Missouri River main‐stem reservoir in North Dakota. In 1994, no paddlefish Polyodon spathula were found in stomachs of these predators. In 1995, 3% of the walleyes, 12% of the saugers, and 1% of the channel catfish with identifiable prey ate wild age‐0 paddlefish. Walleyes ate paddlefish from August to October, with the highest proportions in September, whereas saugers ate paddlefish from July to October in equal proportions. Walleye and sauger stomachs contained wild age‐0 paddlefish as large as 167 mm body length (BL; 305 mm total length, TL), and one channel catfish stomach contained a 142‐mm‐BL (269‐mm‐TL) paddlefish. Predators were also sampled after 8,000 hatchery‐reared, age‐0 paddlefish (mean BL = 189 mm) were released in White Earth Bay, Lake Sakakawea. Hatchery‐reared paddlefish were absent from stomachs of 47 walleyes, 3 saugers, 9 channel catfish, and 3 white bass Morone chrysops with identifiable prey. However, two hatchery‐reared paddlefish (175 and 220 mm BL) were found in 2 of 17 northern pike with identifiable prey. Because we found that walleyes and saugers were capable of eating paddlefish of at least 167 mm BL (305 mm TL), many stocked paddlefish may be susceptible to predation. State agencies should consider stocking larger paddlefish where high densities of sauger or large walleyes (>490 mm TL) are present.

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“…Few published studies using hoop nets in either the Mississippi or Missouri rivers report collections of paddlefish (Starrett and Barnickol 1955;Kallemeyn and Novotny 1977;Jennings 1979;Pierce et al 1981;Hubert and Schmitt 1982;Atchison et al 1986;Pennington et al 1988). Furthermore, most paddlefish research projects have used gears other than hoop nets to collect specimens (e.g., Gengerke 1978;Rosen et al 1982;Hesse and Mestl 1993;Hoxmeier and DeVries 1997;Scarnecchia et al 1997;Grady and Conover 1998;Lein and DeVries 1998). We report, here, observations of paddlefish mortality associated with evaluating hoop nets as a capture gear for other fishes, estimate bycatch mortality and its potential impact, and discuss the need for more detailed surveys of commercial fishing practices.…”

mentioning

confidence: 96%

Mortality of Paddlefish in Hoop Nets in the Lower Missouri River, Missouri

Dieterman

Baird

Galat

2000

North American Journal of Fisheries Management

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Mortality of paddlefish Polyodon spathula collected in hoop nets was observed in the lower Missouri River, Missouri, in 1997. Unbaited hoop nets of three mesh sizes (2.5, 5.0, and 7.5-cm, bar measure) were fished from March to October in two habitats (insidebend steep-cut banks and outside-bend revetted banks). In 462 net-days of effort we caught 23 paddlefish in 5.0and 7.5-cm-mesh nets but none in the 2.5-cm-mesh nets; 35% of the paddlefish collected were found dead. Most paddlefish (90%) were collected along outside-bend revetted banks in May, June, and July. Mortality was not associated with water temperature; however, 80% of paddlefish collected from May through July in 7.5-cmmesh nets were dead versus 21% in 5.0-cm-mesh nets. We estimated that one paddlefish would be killed for every 37 net-days of effort, based on random placement of hoop nets within macrohabitats. Our data indicate that bycatch mortality of paddlefish in hoop nets should be considered and evaluated further in the lower Missouri and other channelized large rivers within their range.

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Capturing and Tagging Wild Age-0 and Age-1 Paddlefish in a Great Plains Reservoir

Cited by 10 publications

References 5 publications

Riverine and Reservoir Influences on Year Class Strength and Growth of Upper Great Plains Paddlefish

Riverine and Reservoir Influences on Year Class Strength and Growth of Upper Great Plains Paddlefish

Predation on Age-0 Paddlefish by Walleye and Sauger in a Great Plains Reservoir

Mortality of Paddlefish in Hoop Nets in the Lower Missouri River, Missouri

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