Length-Weight Relationships for Three Asian Carp Species in the Missouri River

Wanner, Greg A.; Klumb, Robert A.

doi:10.1080/02705060.2009.9664322

Cited by 16 publications

(7 citation statements)

References 19 publications

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“…Additionally, the mean length-at-age and von Bertalanffy parameter estimates for Grass Carp captured both upstream and downstream of LD19 suggests that Grass Carp are smaller, reach the asymptotic length quicker, and reach a smaller maximum size compared with Grass Carp captured in South Carolina, USA (Morrow et al 1997), Florida, USA (Shireman et al 1980), and Virginia, USA (Stich et al 2013). Grass Carp collected downstream of LD19 were of lesser body condition than those collected from the Missouri River (Wanner and Klumb 2009b) and a Virginia lake (Stich et al 2013), but Grass Carp upstream of LD19 were of greater body condition. Grass Carp populations upstream and downstream of LD19 are generally smaller, composed younger fish, and in lower condition than Grass Carp captured from other lotic and lentic systems, potentially in response to highly variable river environments (e.g., Gutreuter et al 1999) and the greater energetic demands of lotic systems (e.g., Glebe and Leggett 1981) or due to commercial harvest of adult Grass Carp through time (Klein et al 2018).…”

Section: Discussionmentioning

confidence: 94%

A Comparison of Grass Carp Population Characteristics Upstream and Downstream of Lock and Dam 19 of the Upper Mississippi River

Sullivan

Weber

Pierce

et al. 2020

Journal of Fish and Wildlife Management

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Grass Carp Ctenopharyngodon idella have been intentionally stocked for aquatic vegetation control across the Midwestern United States for several decades. During the 1970s, escapement of Grass Carp into the Missouri River facilitated their naturalization into much of the Mississippi River basin, including the Upper Mississippi River. Lock and Dam 19 (LD19) in Keokuk, Iowa, is a high-head dam that represents a focal point for naturalized Grass Carp management where populations may differ between upstream and downstream pools as result of limited upstream migration, but potential differences between populations have yet to be evaluated to the best of our knowledge. The objective of this study was to compare the relative abundance, size structure, condition, growth, and recruitment variability of Grass Carp collected upstream and downstream of LD19. We sampled Grass Carp monthly (April–October) during 2014 and 2015 from four locations in the Des Moines River (downstream of LD19) and five locations throughout the Skunk, Iowa, and Cedar rivers (upstream of LD19) using boat electrofishing and trammel net sets. We captured 29 Grass Carp upstream of LD19 compared with 179 individuals captured downstream. Trammel nets only captured Grass Carp downstream of LD19; trammel net catch per unit effort upstream of LD19 was low and ranged from 0.0 to 8.0 fish/net lift (mean ± SE = 0.39 ± 0.13). Electrofishing catch per unit effort ranged from 0.0 to 22.7 fish/h (1.49 ± 0.30) and was higher downstream (2.42 ± 0.30) of LD19 than upstream (0.57 ± 0.07). Grass Carp downstream of LD19 tended to be smaller, younger, of lower body condition, had higher mortality rates, and were slower growing compared with those collected upstream and to populations documented in other systems. Understanding and monitoring adult Grass Carp population characteristics upstream and downstream of LD19 is necessary to determine how they may change in response to ongoing harvest efforts for invasive carps in these river reaches.

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Section: Discussionmentioning

confidence: 94%

A Comparison of Grass Carp Population Characteristics Upstream and Downstream of Lock and Dam 19 of the Upper Mississippi River

Sullivan

Weber

Pierce

et al. 2020

Journal of Fish and Wildlife Management

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“…The energy density of silver carp (5200 J/g [37]) is similar to, if slightly lower than, that of gizzard shad (5476 J/g; [38]). However, the mass of an average 3-year-old silver carp (about 3000 g wet weight for a 650 mm TL 3-year-old [32,39]) is about six times much greater than the mass of the largest gizzard shad specimens (450 g wet weight [40]). Thus, the energetics of scavenging opportunities might encourage blue catfish to rely more heavily on bigheaded carp.…”

Section: Discussionmentioning

confidence: 99%

Consumption of Non-Native Bigheaded Carps by Native Blue Catfish in an Impounded Bay of the Upper Mississippi River

Locher

Wang

Holda³

et al. 2022

Fishes

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Adult bigheaded carps Hypophthalmichthys spp. have never been observed in the diets of native fishes in the Mississippi River Basin. In addition, blue catfish Ictalurus furcatus diet preference and foraging behavior have never been studied in the presence of non-native bigheaded carps in the Mississippi River system. We examined the gut contents of adult blue catfish (567–1020 mm, n = 65), captured from a Mississippi River backwater using trammel nets. All items in diets were separated and enumerated, and all fish-like diet items were genetically identified to confirm species-level ID. Bigheaded carp ages were determined by sectioning hard structures (pectoral spines, post-cleithra, and vertebrae). Adult silver carp Hypophthalmichthys molitrix (age 3–5, mean = 3.9 years, SE = 0.2; n = 21) had the highest frequency of occurrence (70%) and constituted the greatest percentage by number (58%) and weight (60%) in/of blue catfish diets. Gizzard shad Dorosoma cepedianum ranked second by all three measures (34%, 25%, and 26%). Finally, 50% to 100% of probable age-based sizes of silver carp exceeded gape measurements of blue catfish, suggesting scavenging was the dominant means of predation. More intensive sampling efforts are required to determine the system-wide importance of bigheaded carp in blue catfish diets.

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“…The equation ( 2) for the conversion between the TL and weight W (g) of bighead carp was proposed by Wanner and Klumb (2009). (2)…”

Section: Relationship Between Ts and Total Length And Biomass Of Fishmentioning

confidence: 99%

Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep

et al. 2023

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Hydroacoustics is a non-invasive fish stock assessment sampling technique that plays an important role in fishery science and management. However, non-standard hydroacoustic surveys could lead to biased results, and the factor of the sampling period (e.g., season and diel cycle) is extremely critical as it can greatly affect hydroacoustic results. Efforts to improve the accuracy and credibility of the hydroacoustic survey results are getting more and more attention. Thus, we conducted two diel hydroacoustic surveys in situ in summer and winter to detect whether there were diel and seasonal differences in density, Target Strength (TS) and vertical distribution of fish. The results indicated that nighttime had significantly higher fish mean density than daytime in summer and winter. No significant difference between summer and winter daytime, however, significant difference between summer and winter nighttime, but this bias could be accepted from the fisheries management perspective; The mean TS of the summer daytime was significantly higher than that of summer nighttime, winter daytime and winter nighttime, but there were no significant differences among summer nighttime, winter daytime, and winter nighttime, mainly due to mean TS may be overestimated from fish schooling behavior during summer daytime; The fish vertical distribution had significant seasonal correlations and was more dispersed in different water layers during the nighttime, proving that the assessment was better at nighttime than during the daytime. Consequently, the hydroacoustic surveys in Yudong Reservoir and other similar plateau deep water reservoirs should be performed at nighttime, which will yield relatively accurate density and TS, and dispersed vertical distribution of fish.

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Length-Weight Relationships for Three Asian Carp Species in the Missouri River

Cited by 16 publications

References 19 publications

A Comparison of Grass Carp Population Characteristics Upstream and Downstream of Lock and Dam 19 of the Upper Mississippi River

A Comparison of Grass Carp Population Characteristics Upstream and Downstream of Lock and Dam 19 of the Upper Mississippi River

Consumption of Non-Native Bigheaded Carps by Native Blue Catfish in an Impounded Bay of the Upper Mississippi River

Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep

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