Changes in the Population of Lake Whitefish (<i>Coregonus clupeaformis</i>) in Lake Winnipeg from 1944 to 1969

Davidoff, Edwin B.; Rybicki, Ronald W.; Doan, Karolina

doi:10.1139/f73-267

Cited by 10 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The literature provides examples of other freshwater fisheries that have been impacted by recruitment overfishing, the management of which could have been aided by SPR analysis. Evidence presented by Davidoff et al (1973) and Walker et al (1993) for lake whitefish Coregonus clupeaformis, Chevalier (1977) and Anthony and Jorgensen (1977) for walleye Stizostedion vitreum, and Eshenroder (1977) for yellow perch Perca flavescens strongly suggested that recruitment overfishing associated with a decline in catch and yield occurred in these freshwater fisheries. Rieman and Beamesderfer (1990) found that the adultϪrecruitment relation exerted the greatest influence on the dynamics of a white sturgeon population which indicated these long-lived, slow-growing fish are vulnerable to recruitment overfishing.…”

Section: Discussionmentioning

confidence: 98%

Use of the Spawning Potential Ratio for the Upper Mississippi River Channel Catfish Fishery

Slipke

Martin

Pitlo

et al. 2002

North American Journal of Fisheries Management

View full text Add to dashboard Cite

We used simulation modeling to identify the conditions of growth and recruitment overfishing that were associated with a decline in the Upper Mississippi River (UMR) commercial fishery for channel catfish Ictalurus punctatus prior to 1984, when the minimum length limit was increased from 330 to 381 mm total length. The spawning potential ratio (SPR)—an index developed by marine fisheries scientists to identify and prevent recruitment overfishing—is simply a ratio of the average lifetime production of mature eggs per recruit in a fished population to what it would have been if the population had never been fished. We identified a critical minimum SPR that could be used as a biological reference point in the management of a highly exploited channel catfish fishery. Simulation modeling predicted that the SPR, which ranged from 3% to 12% under the 330‐mm minimum length limit, would increase to 10–20% with a 381‐mm minimum length limit for exploitation rates of 45–80%. Our predicted increase in the SPR corresponded well to the three‐ to fourfold increase in age‐0 channel catfish abundance. Prior to the higher length limit, the reduction in commercial yield was primarily due to recruitment overfishing and not growth overfishing. The critical minimum SPR of 10–20% for the UMR channel catfish population is lower than the critical levels of 20–30% typically reported for pelagic marine species and is likely due to the life history characteristics and spawning strategy of channel catfish.

show abstract

Section: Discussionmentioning

confidence: 98%

Use of the Spawning Potential Ratio for the Upper Mississippi River Channel Catfish Fishery

Slipke

Martin

Pitlo

et al. 2002

North American Journal of Fisheries Management

View full text Add to dashboard Cite

show abstract

“…Numerous biologists have claimed that 'boom-andbust' episodes are characteristic of this species, its life history and ecology (Davidoff et al 1973, Loftus 1980, Clark 1984. Others have suggested that these extreme episodes are exaggerated in response to human-caused stressors on lake whitefish population dynamics (Lawler 1965, Ebener 1997, Mohr and Ebener 2005.…”

Section: While This Investigation Did Not Sample Any Of the Other Embmentioning

confidence: 99%

Distribution and abundance of larval lake whitefish (Coregonus clupeaformis) in Stokes Bay, Lake Huron

Ryan¹,

Crawford²

2014

Journal of Great Lakes Research

View full text Add to dashboard Cite

show abstract

“…Winnipeg remains thermally unstratified during most of the ice-free period, precluding the development of cool-water refugia ordinarily sought by adult rainbow smelt in most lakes (Franzin et al, 1994). The presence of lake whitefish (Coregonus clupeaformis) in the north basin of the lake may indicate, however, that some refugia may be available (Davidoff et al, 1973;Franzin et al, 1994).…”

Section: Extent Of Spread and Current Statusmentioning

confidence: 99%

Exotic species in large lakes of the world

Hall

Mills

2000

Aquatic Ecosystem Health &Amp; Management

View full text Add to dashboard Cite

Many of the large lakes of the world have been exposed to the introduction of exotic species. We have reviewed here the introduction of aquatic species in 18 large lakes on five continents (Laurentian Great Lakes, African Great Lakes, several Canadian lakes, Lake Titicaca, Lake Baikal, Lake Ladoga, Gatun Lake, and Lake Biwa). We found that human activities, social preferences, and policy decisions are often associated with the spread of species in these large lakes. However, the spread and resulting ecological effects of introduced species varied among the case studies reviewed (ranging from the failure of brown trout introduction in Lake Titicaca to successful introduction of Nile Perch in Lake Victoria). Those species that did establish successful populations often had major impacts upon the ecosystems of these lakes via a variety of processes, including predation, disturbance, habitat modification and competition. Although introduction of predators often negatively impacted native species (e.g. Nile perch in Lake Victoria, peacock bass in Lake Gatun), species introduced to lower trophic levels (e.g. sardine in Lakes Kariba and Kivu, rainbow smelt in Canadian Lakes) affected fisheries and altered food web structure as well. Exotic species in large lakes of the world were not limited to fish species: plants (e.g. in Lakes Baikal and Biwa), invertebrates (e.g. in Lake Ladoga), and parasites and pathogens (e.g. in Lake Titicaca) have been introduced, but it was often difficult to discern the food web and ecosystem effects of these organisms. Exotic species also impacted socio-economic systems, having both positive (e.g. Lakes Victoria, Titicaca, Kivu, and Kariba, and the Laurentian Great Lakes) and negative (e.g. Lakes Victoria and Titicaca, and the Laurentian Great Lakes) repercussions for humans who depended upon these lakes for food and income. Unfortunately, our understanding of the impacts and extent of introductions on large lake ecosystems often remains speculative at best. The introduction and spread of exotic species will continue to threaten large lakes of the world into the twenty-first century. Exotic species introductions are a global problem that deserves global attention and understanding.

show abstract

Changes in the Population of Lake Whitefish (Coregonus clupeaformis) in Lake Winnipeg from 1944 to 1969

Cited by 10 publications

References 0 publications

Use of the Spawning Potential Ratio for the Upper Mississippi River Channel Catfish Fishery

Use of the Spawning Potential Ratio for the Upper Mississippi River Channel Catfish Fishery

Distribution and abundance of larval lake whitefish (Coregonus clupeaformis) in Stokes Bay, Lake Huron

Exotic species in large lakes of the world

Contact Info

Product

Resources

About