Use of Antimycin for Removal of Brook Trout from a Tributary of Yellowstone Lake

Gresswell, Robert E.

doi:10.1577/1548-8675(1991)011<0083:uoafro>2.3.co;2

Cited by 36 publications

(31 citation statements)

References 8 publications

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“…Brown trout were once stocked in Duck Lake (a small, historically fishless lake near the West Thumb) in 1938, but the lake was poisoned in 1967 to remove the threat of this species entering Yellowstone Lake (Varley 1981). Brook trout Salvelinus fontinalis were introduced to Arnica Creek but were chemically removed from the stream in 1985 (Gresswell 1991). It is possible that the stocking of nonnative fishes early in the history of Yellowstone National Park (Varley 1981), prior to M. cerebralis being introduced to the United States, contributed to the introduction of relatively unknown myxozoans.…”

Section: Biological Aspects Of Myxobolus Cerebralis Infection Riskmentioning

confidence: 99%

Myxobolus cerebralis in Native Cutthroat Trout of the Yellowstone Lake Ecosystem

et al. 2006

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Abstract.-The exotic parasite Myxobolus cerebralis was first detected in native adult Yellowstone cutthroat trout Oncorhynchus clarkii bouvierii from Yellowstone Lake in 1998, seriously threatening the ecological integrity of this pristine, naturally functioning ecosystem. We immediately began to assess the prevalence and spatial extent of M. cerebralis infection in Yellowstone cutthroat trout within Yellowstone Lake and to determine the infection risk of age-0 Yellowstone cutthroat trout, the relative abundance and actinospore production of tubificid worms, and the basic environmental characteristics of tributaries. During 1999-2001, juvenile and adult Yellowstone cutthroat trout were infected throughout Yellowstone Lake; the highest prevalence (15.3-16.4%) occurred in the northern and central regions. Exposure studies in 13 streams indicated that Pelican and Clear creeks and the Yellowstone River were positive for M. cerebralis; the highest prevalence (100%) and severity was found in Pelican Creek during mid-July. Sexually mature individuals of the oligochaete Tubifex tubifex were most abundant in early summer, were genetically homogenous, and were members of a lineage known to produce moderate to high levels of M. cerebralis triactinomyxons. Only 20 of the 3,037 sampled tubificids produced actinospores after 7 d in culture, and none of the actinospores were M. cerebralis. However, one non-actinospore-producing T. tubifex from Pelican Creek tested positive for M. cerebralis by polymerase chain reaction. Stream temperatures at Pelican Creek, a fourth-order, low-gradient stream, were over 208C during the first exposure period, suggesting that T. tubifex were capable of producing triactinomyxons at elevated temperatures in the wild. Although the infection of otherwise healthy adult Yellowstone cutthroat trout within Yellowstone Lake suggests some resistance, our sentinel cage exposures indicated that this subspecies may be more susceptible to whirling disease than previous laboratory challenges have indicated, and M. cerebralis may be contributing to a significant recent decline in this population.

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Section: Biological Aspects Of Myxobolus Cerebralis Infection Riskmentioning

confidence: 99%

Myxobolus cerebralis in Native Cutthroat Trout of the Yellowstone Lake Ecosystem

et al. 2006

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“…The most common methods for removing nonnative, stream-dwelling salmonids have been electrofishing (e.g., Moore et al 1983; Thompson and Rahel 1996;Kulp and Moore 2000;Shepard et al 2002) andtoxicants (e.g., Phinney 1975;Gresswell 1991), although selective angling (Larson et al 1986;Paul et al 2003) and trapping (Young et al 2003) have been used as well. In general, removal projects have met with little success.…”

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confidence: 99%

Evaluation of an Unsuccessful Brook Trout Electrofishing Removal Project in a Small Rocky Mountain Stream

Meyer

Lamansky

Schill

2006

N American J Fish Manag

108

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Abstract.-In the western United States, exotic brook trout Salvelinus fontinalis frequently have a deleterious effect on native salmonids, and biologists often attempt to remove brook trout from streams by means of electrofishing. Although the success of such projects typically is low, few studies have assessed the underlying mechanisms of failure, especially in terms of compensatory responses. A multiagency watershed advisory group (WAG) conducted a 3-year removal project to reduce brook trout and enhance native salmonids in 7.8 km of a southwestern Idaho stream. We evaluated the costs and success of their project in suppressing brook trout and looked for brook trout compensatory responses, such as decreased natural mortality, increased growth, increased fecundity at length, and earlier maturation. The total number of brook trout removed was 1,401 in 1998, 1,241 in 1999, and 890 in 2000; removal constituted an estimated 88% of the total number of brook trout in the stream in 1999 and 79% in 2000. Although abundance of age-1 and older brook trout declined slightly during and after the removals, abundance of age-0 brook trout increased 789% in the entire stream 2 years after the removals ceased. Total annual survival rate for age-2 and older brook trout did not decrease during the removals, and the removals failed to produce an increase in the abundance of native redband trout Oncorhynchus mykiss gairdneri. Lack of a meaningful decline and unchanged total mortality for older brook trout during the removals suggest that a compensatory response occurred in the brook trout population via reduced natural mortality, which offset the removal of large numbers of brook trout. Although we applaud WAG personnel for their goal of enhancing native salmonids by suppressing brook trout via electrofishing removal, we conclude that their efforts were unsuccessful and suggest that similar future projects elsewhere over such large stream lengths would be costly, quixotic enterprises.

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“…rotenone and antimycin) have also been used to eradicate fish (e.g. Sanni and Waervågen 1998;Gresswell 1991). However, their use has ecological effects on native fauna such as invertebrates (e.g.…”

Section: Restoration Projects: Techniques Used and Successful Casesmentioning

confidence: 99%

Why Should We Preserve Fishless High Mountain Lakes?

Ventura

Tiberti

Buchaca

et al. 2017

Advances in Global Change Research

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High mountain lakes are originally fishless, although many have had introductions of non-native fish species, predominantly trout, and recently also minnows introduced by fishermen that use them as live bait. The extent of these introductions is general and substantial often involving many lakes over mountain ranges. Predation on native fauna by introduced fish involves profound ecological changes since fish occupy a higher trophic level that was previously inexistent. Fish predation produces a drastic reduction or elimination of autochthonous animal groups, such as amphibians and large macroinvertebrates in the littoral, and crustaceans in the plankton. These strong effects raise concerns for the conservation of high mountain lakes. In terms of individual species, those adapted to live in larger lakes have suffered a higher decrease in the size of their metapopulation. This ecological problem is discussed from a European perspective providing examples from two study areas: the Pyrenees and the Western Italian Alps. Species-specific studies are urgently needed to evaluate the conservation status of the more impacted species, together with conservation measures at continental and regional scales, through regulation, and at local scale, through restoration actions, aimed to stop further invasive species expansions and to restore the present situation. At different high mountain areas of the world, there have been restoration projects aiming to return lakes to their native fish-free status. In these areas autochthonous species that disappeared with the introduction of fish are progressively recovering their initial distribution when nearby fish-free lakes and ponds are available.

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Use of Antimycin for Removal of Brook Trout from a Tributary of Yellowstone Lake

Cited by 36 publications

References 8 publications

Myxobolus cerebralis in Native Cutthroat Trout of the Yellowstone Lake Ecosystem

Myxobolus cerebralis in Native Cutthroat Trout of the Yellowstone Lake Ecosystem

Evaluation of an Unsuccessful Brook Trout Electrofishing Removal Project in a Small Rocky Mountain Stream

Why Should We Preserve Fishless High Mountain Lakes?

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