Age, Growth, and Mortality of a Trophy Channel Catfish Population in Manitoba, Canada

Siddons, Stephen F.; Pegg, Mark A.; Hogberg, Nick P.; Klein, Geoff M.

doi:10.1080/02755947.2016.1224783

Cited by 12 publications

(15 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Outcomes from this study enhance the growing knowledge about Channel Catfish populations and corroborate Siddons et al. (2016) by demonstrating that in northern latitudes, lotic Channel Catfish populations with steady growth and high annual survival can be abundant and provide opportunities for angling large Channel Catfish. In the Minnesota River, Channel Catfish size structure is larger downstream of Granite Falls Dam, but relative abundance is greater upstream.…”

Section: Discussionsupporting

confidence: 85%

Comparing Channel Catfish Populations in the Fragmented Minnesota River

Sindt

2021

N American J Fish Manag

View full text Add to dashboard Cite

Channel Catfish Ictalurus punctatus provide important fisheries in lotic systems throughout much of North America, but few studies have evaluated the influence of dams and habitat fragmentation on their populations. The Minnesota River is an important recreational catfish fishery in Minnesota that is fragmented by Granite Falls Dam, located 395 km upstream from the confluence with the Mississippi River. Granite Falls Dam is a significant barrier to upstream fish passage; consequently, the upstream fish community is less diverse than the downstream community and habitat availability differs between reaches. For this study, hoop‐net assessments conducted by the Minnesota Department of Natural Resources during 2014–2017 were used to compare Channel Catfish catch rates, size structure, growth, and annual survival between the upstream and downstream reaches. Hoop‐net catch rates upstream (mean ± SE = 45.1 ± 5.2 fish/net‐night) were significantly greater by an order of magnitude compared to catch rates downstream (3.9 ± 0.4 fish/net‐night). Size structure of Channel Catfish also significantly differed between reaches: the percentage of stock‐length (≥280‐mm) fish that were preferred length or larger (≥610 mm) was 28.4% downstream compared to 5.8% upstream. Annual survival estimates and growth indices were generally similar between reaches, but there was evidence of greater longevity downstream, where the oldest aged fish were 24 years compared to 19 years upstream. This study demonstrates population differences that may be influenced and exacerbated by habitat fragmentation and provides support for considering each population individually when making future management decisions.

show abstract

Section: Discussionsupporting

confidence: 85%

Comparing Channel Catfish Populations in the Fragmented Minnesota River

Sindt

2021

N American J Fish Manag

View full text Add to dashboard Cite

show abstract

“…Likewise, Channel Catfish in the Red River, Manitoba, a population approximately 800 km to the north, exhibited growth similar to that of the lower James River population and other populations across their distribution (Siddons et al. 2016). Unlike Flathead Catfish, the large‐scale analysis of Channel Catfish growth showed no correlation with climatic variables (Rypel 2011), and this was partly attributed to their exceptionally plastic diet (Scott and Crossman 1973; Becker 1983).…”

Section: Discussionmentioning

confidence: 96%

Population Dynamics and Simulated Effects of Length‐Based Trophy Regulations for Flathead and Channel Catfish in the Lower James River, South Dakota

Schall

Lucchesi

2021

N American J Fish Manag

View full text Add to dashboard Cite

Catfish are popular with anglers fishing southeastern South Dakota rivers, and a group of anglers has expressed concern about the perceived overharvest of trophy‐size catfish. However, existing data are insufficient for determining whether Flathead Catfish Pylodictis olivaris and Channel Catfish Ictalurus punctatus are being overharvested. Our objective was to determine the population dynamics of Flathead and Channel catfish and model potential outcomes of length‐based trophy regulations (one fish and no fish harvested over 610 mm) in the lower James River, South Dakota. Multiple gears were used to collect Flathead Catfish (low‐frequency electrofishing and trotlines) and Channel Catfish (baited hoop nets and low‐frequency electrofishing) during 2018, and samples were augmented with angler‐caught catfish collected from three angling tournaments. Pectoral spines were removed from a subsample of fish for age estimation; 305‐mm and larger fish received a Carlin dangler tag with a reward value of US$0, $10, or $100. Growth rates were slow to moderate for Flathead Catfish and moderate for Channel Catfish. Trophy‐size Flathead Catfish (TL ≥ 1,020 mm) were sampled, but few of the collected Channel Catfish exceeded preferred length (TL ≥ 610 mm). Total annual mortality was estimated at 25.7% for Flathead Catfish and 25.2% for Channel Catfish. Exploitation estimated from angler reward tag returns was less than 1% for each species. Yield‐per‐recruit models indicated that a regulation specifying one fish over 610 mm would slightly reduce yield for both species but would only increase the number of memorable‐length Flathead Catfish (860 mm) and Channel Catfish (710 mm) by less than 1%. A no‐harvest regulation would substantially reduce yield of Flathead Catfish and would increase the number of memorable‐length Flathead Catfish by approximately 2% and Channel Catfish by less than 1%. Information obtained during this study suggests that current Flathead and Channel Catfish populations have limited trophy potential and that length‐based trophy regulations would have limited impact on the abundance of large catfish in the lower James River.

show abstract

“…More liberal harvest regulations appear to be reducing the survival of Channel Catfish in the USA portion of the Red River, and anecdotal evidence suggests additional fishing mortality is present within Lake Winnipeg because of mortality as by‐catch from commercial Walleye harvest. While conservative regulations in Manitoba appear to be sustaining the trophy fishery (Siddons et al, ), increased harvest in Lake Winnipeg from the commercial fishery or in the USA from more liberal regulations could alter population dynamics of the trophy fishery within Manitoba.…”

Section: Discussionmentioning

confidence: 99%

“…We estimated movement rates between states for all catfish >200 mm and also for an ‘angler‐susceptible’ size group of catfish ≥668 mm. The angler‐susceptible size group was used to represent fish commonly captured by anglers within this fishery, as 95% of the Channel Catfish that were angled from the Selkirk reach were at least 668 mm (Siddons et al, ). A total of 14 monthly periods were used to cover sampling events as equally as possible and used for movement analyses (Table ).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Borders and Barriers: challenges of Fisheries Management and Conservation in Open Systems

Siddons

Pegg

Klein³

2017

River Research & Apps

View full text Add to dashboard Cite

Large rivers often bisect geopolitical boundaries where management goals may be at odds for a shared fishery, creating fragmented management zones. Fragmentation due to physical barriers may further impact the fishery by reducing fish passage. Our goal was to estimate basin‐wide parameters (i.e. movement, survival and capture probabilities) of a large‐river species known to move throughout watersheds. We tagged13 892 Channel Catfish in the Red River of the North (Red River) and Lake Winnipeg in Manitoba, Canada, and collected 553 recaptures. We estimated 2.2% of catfish are moving from the Red River to Lake Winnipeg each month and 9.4%, primarily large (>600 mm) individuals, moved upstream through a dam (monthly). Approximately 5.6% of catfish moved to the USA each month, and only one fish returned. Our results suggest the lower reaches of the Red River may be a source population for the USA, where survival is lower, and Lake Winnipeg. The complex movements of Channel Catfish throughout the Red River, across barriers and international boundaries, suggest conservation and management of fish populations should be watershed wide. Copyright © 2017 John Wiley & Sons, Ltd.

show abstract

Age, Growth, and Mortality of a Trophy Channel Catfish Population in Manitoba, Canada

Cited by 12 publications

References 21 publications

Comparing Channel Catfish Populations in the Fragmented Minnesota River

Comparing Channel Catfish Populations in the Fragmented Minnesota River

Population Dynamics and Simulated Effects of Length‐Based Trophy Regulations for Flathead and Channel Catfish in the Lower James River, South Dakota

Borders and Barriers: challenges of Fisheries Management and Conservation in Open Systems

Contact Info

Product

Resources

About