An Ephemeral Fauna of Torrents in the Northern Territories of the Gold Coast, with Special Reference to the Enemies of<i>Simulium</i>

Crisp, G.

doi:10.1080/00034983.1956.11685764

Cited by 17 publications

(11 citation statements)

References 9 publications

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“…Os testes foram realizados no programa Systat (2004) versão 11. Referências bibliográficas Castaldi & Gutiérrez 1981;Crisp 1956;Crosskey 1990;Elliott 2000;Gorayeb & Mok 1982;Gorayeb & Pinger 1978;Jenkins 1964;Laird 1981;Wotton et al 1993. Crosskey 1990Damalt 1956;Gorayeb & Pinger 1978;Jenkins 1964;Kuralová & Olejnícek 1985;Laird 1981;Malmqvist 1994;Service 1974.…”

Section: Methodsunclassified

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Velocidade da água e a distribuição de larvas e pupas de Chirostilbia pertinax (Kollar) (Diptera, Simuliidae) e macroinvertebrados associados

Junior¹,

Strieder²,

Fiorentin³

et al. 2007

Rev. Bras. entomol.

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Section: Methodsunclassified

“…Flint 1983. Crisp 1956. Crisp 1956Crosskey 1990;Jenkins 1964;Laird 1981;Lindegaard 1997;Peterson & Davies 1960;Werner & Pont 2003.…”

Section: Methodsunclassified

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Velocidade da água e a distribuição de larvas e pupas de Chirostilbia pertinax (Kollar) (Diptera, Simuliidae) e macroinvertebrados associados

Junior¹,

Strieder²,

Fiorentin³

et al. 2007

Rev. Bras. entomol.

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“…val populations is still uncertain (Carlsson 1967; The caseless larvae of the trichopterans Hy-Chutter 1968); nevertheless workers in the field of dropsyche and Rhyucophilu have been frequently Simulium control have long been conscious of the reported as predators of Simulium larvae in Europe fact that the insecticides they apply to rivers and and North America (Peterson 1960; Peterson and streams could also have an adverse effect on such Davies 1960;Carlsson 1967), while Hydropsyche, natural predators, and that consequently Simulium Cheumatopsyche, and allied genera are also re-populations might increase explosively once ported with similar habits in Africa (Hynes and chemical control is withdrawn (Hynes and WilWilliams 1962;Crisp 1956;Chutter 1968). The nu-liams 1962;Chance 1970;Jamnback 1973Jamnback , 1976; merous records from various parts of the world Wallace et ul.…”

Section: Introductionmentioning

confidence: 97%

Experimental studies on macroinvertebrate predator–prey impact of pesticides. The reactions of Rhyacophila and Hydropsyche (Trichoptera) larvae to Simulium larvicides

Muirhead-Thomson¹

1979

Can. J. Zool.

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Acute toxicity tests with the predaceous trichopteran larvae of Rhyacophila dorsalis and Hydropsyche pellucidula in a laboratory-simulated stream have shown that both species have a high survival rate after short exposures, 15 min to 1 h, to concentrations of temephos(Abate) and chlorpyrifos methyl that produce a mortality of 90% or more in late-instar Simulium larvae. A similar differential reaction to the synthetic pyrethroid permethrin was demonstrated in the case of Hydropsyche but not Rhyacophila.The implication of these findings is discussed firstly in relation to the environmental impact of Simulium control programmes based on application of larvicides to rivers and streams, and secondly to the wider problem of evaluating the impact of pesticides and allied toxic chemicals on stream ecosystems.It is concluded that although significant differences in tolerance level to some insecticides between prey (Simulium) and predator (trichopteran larvae) can be demonstrated in the laboratory, the margin of safety is not sufficiently wide to assure selective control of Simulium larvae by these chemicals under the less precise conditions of larvicide application in the field.

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“…Eggs of S.damnosum Theobald are rapidly killed by drying (Crisp, 1956) and the eggs of Austrosimulium pestilens Mack. Desiccation increased the required incubation time of the eggs that survived when reimmersed in water.…”

Section: Discussionmentioning

confidence: 99%

Quantitative studies on the eggs of Simulium (Simulium) ornatum Meigen and Simulium (Wilhelmia) equinum L. in a chalk stream in southern England

Welton

Bass

1980

Ecological Entomology

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1. The egg masses of Simuliurn ornatum, S.equinum and S.vernum are described and information is given on numbers of eggs per egg mass and the size and number of batches laid by individual females.2. The oviposition sites were studied in relation t o water velocity, wind speed and direction.3. The incubation periods at different river temperatures and the effects of desiccation on percentage hatch and incubation times were investigated.4. The numbers of eggs laid were assessed for the winter generations of S. ornatum and S.equinum. The relevance of these to the overall production estimates is discussed.

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An Ephemeral Fauna of Torrents in the Northern Territories of the Gold Coast, with Special Reference to the Enemies ofSimulium

Cited by 17 publications

References 9 publications

Velocidade da água e a distribuição de larvas e pupas de Chirostilbia pertinax (Kollar) (Diptera, Simuliidae) e macroinvertebrados associados

Velocidade da água e a distribuição de larvas e pupas de Chirostilbia pertinax (Kollar) (Diptera, Simuliidae) e macroinvertebrados associados

Experimental studies on macroinvertebrate predator–prey impact of pesticides. The reactions of Rhyacophila and Hydropsyche (Trichoptera) larvae to Simulium larvicides

Quantitative studies on the eggs of Simulium (Simulium) ornatum Meigen and Simulium (Wilhelmia) equinum L. in a chalk stream in southern England

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