25 references found for Gymnocephalus cernuus:
1. Bernstein, N.P and Olson, J.R., 2001. Ecological problems with Iowa's invasive and introduced fishes. Journal of the Iowa Academy of Science. 108(4). 185-209.
2. Brown, W. P; Selgeby, J. H and Collins, H. L, 1998. Reproduction and early life history of ruffe (Gymnocephalus cernuus) in the St. Louis River, a Lake Superior tributary. Journal of Great Lakes Research, 24(2):217-227.
Summary: The reproduction and early life history of the ruffe (Gymnocephalus cernuus) in the St. Louis River tributary of Lake Superior is examined. Spawning period and corresponding water temperatures are reported as is timing of protolarval emergence. Diel movements of larval ruffe are also reported. Characteristics of ruffe reproduction and the activity of larval ruffe are used to estimate the most probable times of larval infestation of ballast water and subsequent translocation of larval ruffe. The authors suggest that this information may be useful to fishery managers developing ruffe control methods as well as determining possible interactions between ruffe and native species during early life stages.
Summary: The electronic tool kits made available on the Cefas page for free download are Crown Copyright (2007-2008). As such, these are freeware and may be freely distributed provided this notice is retained. No warranty, expressed or implied, is made and users should satisfy themselves as to the applicability of the results in any given circumstance. Toolkits available include 1) FISK- Freshwater Fish Invasiveness Scoring Kit (English and Spanish language version); 2) MFISK- Marine Fish Invasiveness Scoring Kit; 3) MI-ISK- Marine invertebrate Invasiveness Scoring Kit; 4) FI-ISK- Freshwater Invertebrate Invasiveness Scoring Kit and AmphISK- Amphibian Invasiveness Scoring Kit. These tool kits were developed by Cefas, with new VisualBasic and computational programming by Lorenzo Vilizzi, David Cooper, Andy South and Gordon H. Copp, based on VisualBasic code in the original Weed Risk Assessment (WRA) tool kit of P.C. Pheloung, P.A. Williams & S.R. Halloy (1999).
The decision support tools are available from: http://cefas.defra.gov.uk/our-science/ecosystems-and-biodiversity/non-native-species/decision-support-tools.aspx [Accessed 13 October 2011]
The guidance document is available from http://www.cefas.co.uk/media/118009/fisk_guide_v2.pdf [Accessed 13 January 2009].
4. Dawson, V.K; Bills, T.D; Boogaard, M.A., 1998. Avoidance behavior of ruffe exposed to selected formulations of piscicides. Journal of Great Lakes Research. 24(2). 343-350.
5. Eckmann, R and Roesch, R., 1998. Lake Constance fisheries and fish ecology. Ergebnisse der Limnologie. 0(53). 285-301.
6. Fullerton, A.H., G.A. Lamberti, D.M. Lodge, and F.W. Goetz, 2000. Potential for Resource Competition between Eurasian Ruffe and Yellow Perch: Growth and RNA Responses in Laboratory Experiments, Transactions of the American Fisheries Society 129: 1331–1339
7. Mayo, K. R, Selgeby, J. H., 1996. Trophic relations of ruffe and the status of ongoing research in the St. Louis River estuary, Lake Superior. Presented at Great Lakes Fishery Commission Lake Superior Committee Meeting, 19 March, , Duluth, MN. 10 p
8. Mendoza, R.E.; Cudmore, B.; Orr, R.; Balderas, S.C.; Courtenay, W.R.; Osorio, P.K.; Mandrak, N.; Torres, P.A.; Damian, M.A.; Gallardo, C.E.; Sanguines, A.G.; Greene, G.; Lee, D.; Orbe-Mendoza, A.; Martinez, C.R.; and Arana, O.S. 2009. Trinational Risk Assessment Guidelines for Aquatic Alien Invasive Species. Commission for Environmental Cooperation. 393, rue St-Jacques Ouest, Bureau 200, Montréal (Québec), Canada. ISBN 978-2-923358-48-1.
Summary: In 1993, Canada, Mexico and the United States signed the North American Agreement on Environmental Cooperation (NAAEC) as a side agreement to the North American Free Trade Agreement (NAFTA). The NAAEC established the Commission for Environmental Cooperation (CEC) to help the Parties ensure that improved economic efficiency occurred simultaneously with
trinational environmental cooperation. The NAAEC highlighted biodiversity as a key area for trinational cooperation. In 2001,
the CEC adopted a resolution (Council Resolution 01-03), which created the Biodiversity Conservation Working Group (BCWG),
a working group of high-level policy makers from Canada, Mexico and the United States. In 2003, the BCWG produced
the “Strategic Plan for North American Cooperation in the Conservation of Biodiversity.” This strategy identified responding to
threats, such as invasive species, as a priority action area. In 2004, the BCWG, recognizing the importance of prevention in addressing
invasive species, agreed to work together to develop the draft CEC Risk Assessment Guidelines for Aquatic Alien Invasive
Species (hereafter referred to as the Guidelines). These Guidelines will serve as a tool to North American resource managers
who are evaluating whether or not to introduce a non-native species into a new ecosystem. Through this collaborative
process, the BCWG has begun to implement its strategy as well as address an important trade and environment issue. With increased
trade comes an increase in the potential for economic growth as well as biological invasion, by working to minimize the potential adverse
impacts from trade, the CEC Parties are working to maximize the gains from trade while minimizing the environmental costs.
Available from: English version: http://www.cec.org/Storage/62/5516_07-64-CEC%20invasives%20risk%20guidelines-full-report_en.pdf [Accessed 15 June 2010]
French version: http://www.cec.org/Storage/62/5517_07-64-CEC%20invasives%20risk%20guidelines-full-report_fr.pdf [Accessed 15 June 2010]
Spanish version: http://www.cec.org/Storage/62/5518_07-64-CEC%20invasives%20risk%20guidelines-full-report_es.pdf [Accessed 15 June 2010].
9. Ricciardi, A and Rasmussen, J.B., 1998. Predicting the identity and impact of future biological invaders: A priority for aquatic resource management. Canadian Journal of Fisheries & Aquatic Sciences. 55(7). 1759-1765.
10. Schmid, W., 1998.Coregonus lavaretus ova predation by newly introduced ruffe (Gymnocephalus cernuus L.) in Lake Constance, Germany. Ergebnisse der Limnologie. 0(50). 179-183.
11. Winfield, I.J and Durie, N.C., 2004. Fish introductions and their management in the English Lake District. Fisheries Management and Ecology, 11, 195–201.
12. Winfield, I.J; Fletcher, J.M and James, J.B., 2004. Conservation ecology of the vendace (Coregonus albula) in Bassenthwaite Lake and Derwent Water, U.K. Annales Zoologici Fennici. 41(1). 155-164
13. Adams, C. E and Maitland, P.S., 1998. The ruffe population of Loch Lomond, Scotland: Its introduction, population expansion, and interaction with native species. Journal of Great Lakes Research, 24(2):249-262.
Summary: The introduction of the ruffe (Gymnocephalus cernuus) into Loch Lomond, Scotland in 1982 and the subsequent expansion of the population are discussed. The population is reported to have grown exponentially between 1982 and 1992, and then stabilized at a very high level. Food habits of the ruffe are examined with emphasis on diet overlap between this exotic species and native species including perch (Perca fluviatilis) and brown trout (Salmo trutta). Results suggest that feeding resource competition does not occur between ruffe and perch or ruffe and brown trout during their adult lives. Possible disruption of predator-prey interactions is also discussed focusing on the use of ruffe as prey by cormorants, herons, and northern pike (Esox lucius). The effects of this diet shift on native fish populations is commented on.
Summary: FishBase is a global information system with "all you ever wanted to know about fishes". FishBase on the web contains practically all fish species known to science. FishBase was developed at the WorldFish Center in collaboration with the Food and Agriculture Organization of the United Nations (FAO) and many other partners, and with support from the European Commission (EC). Since 2001 FishBase is supported by a consortium of seven research institutions. You can search on Search FishBase
This species profile is available from:
http://www.fishbase.org/summary/speciessummary.cfm?id=4474i [Accessed 21 March, 2005]
Summary: Available from: http://www.iucnredlist.org/details/135518/0 [Accessed 25 May 2012]
Summary: Contains common names, scientific name, taxonomy, description, native and non-native distribution, mode of introduction and spread, benefits, impacts, and control methods.
Available from: http://www.columbia.edu/itc/cerc/danoff-burg/invasion_bio/inv_spp_summ/Gymnocephalus%20cernuus.html [Accessed 2 November 2003]
Summary: An online database that provides taxonomic information, common names, synonyms and geographical jurisdiction of a species. In addition links are provided to retrieve biological records and collection information from the Global Biodiversity Information Facility (GBIF) Data Portal and bioscience articles from BioOne journals.
Available from: http://www.cbif.gc.ca/pls/itisca/taxastep?king=every&p_action=containing&taxa=Gymnocephalus+cernuus&p_format=&p_ifx=plglt&p_lang= [Accessed March 2005]
18. Maitland, P.S and East, K., 1989. An increase in numbers of ruffe, Gymnocephalus cernua (L.), in a Scottish loch from 1982 to 1987.
Summary: An increase in the abundance of the ruffe (Gymnocephalus cernua), a species recently introduced into Loch Lomond, is reported. Concerns about the impact of increasing ruffe predation on existing species, particularly the powan (Coregonus lavaretus) are discussed.
19. Maitland, P.S; East, K and Morris, K.H., 1983. Ruffe Gymnocephalus cernua (L.), new to Scotland, in Loch Lomond.
Summary: The occurrence of the ruffe (Gymnocephalus cernua (L.)) in Loch Lomond, Scotland is reported. Historically robust native populations have prevented invading species from becoming established, however disruption in native species may provide an opening for newly introduced species and adverse effects on existing fish populations in the Loch are feared. Steps to prevent further introductions are discussed.
20. Moyle, P.B., 1991. Ballast water introductions. Fisheries, 16(1):4-6.
21. Pratt, D.M; Blust, W.H, Selgeby, J. H., 1992. Ruffe, Gymnocephalus cernuus: Newly introduced in North America. Canadian Journal of Fisheries and Aquatic Sciences, 49:1616-1618.
Summary: The first known occurrence of the Eurasian ruffe (Gymnocephalus cernuus) in North America is reported. Possible mechanisms of the introduction of this exotic species are mentioned. Aspects of basic ruffe biology are reported including physical description, habitat, fecundity, and food habits. The possible ramifications of the introduction of G. cernuus are speculated including impacts on native fish.
Summary: Includes information on description, impacts, orgin, distribution, and control methods.
Available from: http://www.iisgcp.org/EXOTICSP/ruffe.htm [Accessed 2 November 2003]
23. Selgeby J., 1998. Predation by ruffe (Gymnocephalus cernuus) on fish eggs in Lake Superior. Journal of Great Lakes Research, 24(2):304-308.
Summary: The food habits of ruffe (Gymnocephalus cernuus) in the St. Louis River estuary, Lake Superior, are examined to assess predation on native species’ eggs. Food items found in stomach analysis denoted an entirely benthic foraging behavior and showed fish eggs to be one of the most frequently consumed items. Using genetic characterization (PCR-RSLP) the eggs were determined to be lake herring (Coregonus artedii). Based on reports of ruffe predation on eggs and the effects on populations in other areas the authors speculate that ruffe predation could play a role in overwinter mortality for fall spawning fish in the Great Lakes.
24. Winfield, I. J., 1992. Threats to the lake fish communities of the U.K. arising from eutrophication and species introductions. Netherlands Journal of Zoology, 42:233-242.
Summary: The direct and indirect effects of eutrophication on U.K. fish communities is briefly discussed with references cited for more in depth discussions. Also included is a discussion on how species introductions can effect U.K. fish communities. Attention is focused on pike-perch (Stizostedion lucioperca L.), ruffe (Gymnocephalus cernuus L.) and roach (Rutilus rutilus L.) in regard to their roles as predators, competitors and environmental degraders.
25. Winfield, I. J., Adams, C. E. & Fletcher, J. M. (1996). Recent introductions of the ruffe (Gymnocephalus cernuus) to three United Kingdom lakes containing Coregonus species. Annales Zoologici Fennici 33, 459-466.
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