<i>Bythotrephes cederstroemi</i> (Schoedler) in Muskoka Lakes: First Records of the European Invader in Inland Lakes in Canada

Yan, Norman D.; Dunlop, Warren I.; Pawson, Trevor W.; MacKay, L. E.

doi:10.1139/f92-048

Cited by 59 publications

(54 citation statements)

References 8 publications

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“…Its slow range expansion resembles that seen in the cladoceran Bythotrephes cederstroemi, which has also colonized only those inland lakes in proximity to the Great Lakes (Yan et al, 1992). Carter et aL (1980) reported that B. coregoni occurs only in hard water lakes, which suggests that its spread may have been slowed by habitat requirements.…”

Section: Discussionmentioning

confidence: 93%

Founder effects and geographical variation in the invading cladoceran Bosmina (Eubosmima) coregoni Baird 1857 in North America

Demelo

Hebert

1994

Heredity

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Invasions and subsequent range expansions by exotic species provide an excellent opportunity for the study of founder effects on the genetic structure of colonizing populations. Although the Great Lakes have served as the initial point of colonization for more than 100 species, few studies have examined the genetic structure of these invaders. This study shows that levels of genetic variability in North American populations of the cladoceran invader Bosmina coregoni are at least as high as those in European populations, suggesting that founding populations were large. As allelic diversity in North America is higher than in any single European population, the Great Lakes have probably been colonized repeatedly. In the past 30 years, B. coregoni has expanded its range into inland lakes within 100 km of the Great Lakes, through both long-distance dispersal and migration among neighbouring lakes. Although these secondary invasions have produced little reduction in genetic diversity, they have led to pronounced gene frequency divergence among populations from inland North American lakes.

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Section: Discussionmentioning

confidence: 93%

Founder effects and geographical variation in the invading cladoceran Bosmina (Eubosmima) coregoni Baird 1857 in North America

Demelo

Hebert

1994

Heredity

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“…Bythotrephes was first detected in the lake in 1991 (Yan et al 1992), and has persisted ever since (Young 2008;Kim pers. obs.).…”

Section: Materials and Proceduresmentioning

confidence: 99%

Methods for rearing the invasive zooplankter Bythotrephes in the laboratory

Kim

Yan

2010

Limnology & Ocean Methods

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The invasive spiny water flea's (Bythotrephes longimanus) current North American distribution encompasses the Laurentian Great Lakes as well as a number of inland lakes, particularly on the Canadian Shield. In the past, poor survival in the laboratory has precluded controlled long-term studies on Bythotrephes. Here we investigated field collection techniques and choices of culture media, temperature, and diet that led to the successful maintenance of Bythotrephes from birth to reproduction. Gravid parthenogenic females were collected from invaded lakes. Resulting offspring were reared in source lake water filtered through 20 or 80 µm, or a fully defined artificial culture medium, FLAMES. Individuals raised in FLAMES produced significantly larger broods than those in lake water, indicating that it is an appropriate culture medium. We next conducted a 96-h temperature bioassay on juvenile Bythotrephes. Survival was comparable at 16°C, 20°C, and 24°C but decreased after 48 h at 28°C, and most animals died after 24 h at 32°C. We also reared Bythotrephes at 16°C, 19°C, 22°C, and 25°C. Corresponding intrinsic rates of natural increase (r) for animals maintained to first brood release were 0.02, 0.05, 0.06, and 0.03 d -1 , suggesting that Bythotrephes should be reared at ~22°C to benefit from maximum population increases. Feeding trials confirmed that young Bythotrephes prefer small, slow-moving prey. Finally, we devised a protocol for rearing Bythotrephes that yielded 100% survival to reproduction and r = 0.10 d -1 (for animals maintained to first brood release). Given these results, it is now possible to conduct long-term laboratory studies on this invader.

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“…Most conspicuous are the zebra mussel Dreissena polymorpha and the cladoceran Bythotrephes cederstroemi, both of which are believed to have been originally brought to North America in the bilges of foreign ships entering the Great Lakes. They have subsequently been migrating slowly northward and westward, carried by boats, bait buckets, and other aquatic equipment used in a variety of waters (Hebert et al 1991, Yan et al 1992, Ricciardi et al1997). These organisms have totally restructured the communities upon which fishes depend, displacing and extirpating many native species of invertebrates from southern boreal waters (Yan and Pawson 1997).…”

Section: Ecological Invasionsmentioning

confidence: 99%

Sustaining Aquatic Ecosystems in Boreal Regions

Schindler¹

1998

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Few boreal waters are managed in a sustainable manner, because cumulative effects of a variety of human activities are not considered. Fisheries and water quality have declined in most large water bodies of the southern boreal zone. Some of the reasons are direct, including overexploitation of fisheries, alteration of flow patterns, introductions of non-native species, and discharge of eutrophying nutrients and persistent contaminants. However, improper management of watersheds and airsheds also causes degradation of aquatic ecosystems. Clear-cut logging, climatic warming, acid precipitation, and stratospheric ozone depletion are among the more important of these indirect stressors. There are important interactions among these stressors, requiring that they not be treated in isolation. Ecological sustainability of boreal waters would require that exploitation of all parts of the boreal landscape be much lower than it is at present. Unfortunately, management for sustainability is lagging far behind scientific understanding in most countries.

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Bythotrephes cederstroemi (Schoedler) in Muskoka Lakes: First Records of the European Invader in Inland Lakes in Canada

Cited by 59 publications

References 8 publications

Founder effects and geographical variation in the invading cladoceran Bosmina (Eubosmima) coregoni Baird 1857 in North America

Founder effects and geographical variation in the invading cladoceran Bosmina (Eubosmima) coregoni Baird 1857 in North America

Methods for rearing the invasive zooplankter Bythotrephes in the laboratory

Sustaining Aquatic Ecosystems in Boreal Regions

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