The Relationship of Exposure Time to the Molluscicidal Activity of Copper Sulfate 1

Hoffman, D. O.; Zakhary, Rizkalla

doi:10.4269/ajtmh.1953.2.332

Cited by 8 publications

(4 citation statements)

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“…The toxicity of Cutrine-Plus and diquat varied little with changes in temperature (1 7-27OC), hardness (10-84 mg/L) and pH (6.6-8.0) ( Table 3). Hoffman and Zakhary [33,34] indicated that temperature and exposure time were critical in determining the activity of molluscicides, but the 96-h LCso for copper in the present study ranged only from 35 to 48 pglL (nominal concentration). However, the addition of large amounts of sediment (200 g, 1 cm thick) and food (20,50 or 200 g of lettuce) decreased the toxicity of Komeen substantially (Table 3).…”

Section: Acute Toxicity Of Copper and Diquar Ro Apple Snailscontrasting

confidence: 66%

Field and laboratory evaluation of the influence of copper‐diquat on apple snails in Southern Florida

Winger

Imlay

McMillan

et al. 1984

Enviro Toxic and Chemistry

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The recent decline of apple snail (Pomacea paludosa) populations in canals surrounding Loxahatchee National Wildlife Refuge in southern Florida coincided with the use of copper‐diquat for the control of the aquatic weed hydrilla (Hydrilla verticillata). Field and laboratory studies were designed to assess the effects of copper‐diquat on apple snails, which are the primary food of the endangered snail kite Rostrhamus sociabilis (formerly known as the Everglade kite). Acute toxicities (96‐h LC50 values) of Cutrine‐Plus and Komeen (chelated formulations of copper) to immature apple snails were 22 and 24 μg/L, respectively. Diquat was toxic at a concentration of 1,800 μg/L and did not increase the toxicity of copper when the chemicals were used in combination. Evaluation of field samples indicated that copper concentrations were higher in detritus than in water, plants and mud, and that there was a gradient of copper concentration from the canal to the interior, the highest residues being in samples from the canal. Copper associated with detritus (up to 150 μg/g) had no effect on growth or survival of apple snails in field cage and tank studies. Also, field applications of copper‐diquat to hydrilla had no effect on survival of caged adult and immature snails. Copper from field applications was rapidly taken out of solution by plants and organic material in the water and subsequently incorporated into the bottom detritus. Although the effects of repeated applications of copper‐diquat and high body burdens of copper (accumulated during exposure to herbicidal treatment) on survival and reproduction of apple snails are not known, the information available indicates that treatment of hydrilla with copper‐diquat was probably not responsible for the decline in the apple snail population. Application at recommended rates should pose no threat to these snails in the organically rich waters of southern Florida.

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Section: Acute Toxicity Of Copper and Diquar Ro Apple Snailscontrasting

confidence: 66%

Field and laboratory evaluation of the influence of copper‐diquat on apple snails in Southern Florida

Winger

Imlay

McMillan

et al. 1984

Enviro Toxic and Chemistry

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“…Copper sulfate (compound 1 , Table 1 , Tab. S1 , see Supplementary materials ) was evaluated as molluscicides to combat B. alexandrina snails in Egypt (Hoffman and Zakhary 1953 ). The mortality of snails could reach 100% within 2 weeks at 0.25 ppm.…”

Section: Development Of Chemical Molluscicidesmentioning

confidence: 99%

Molluscicides against the snail-intermediate host of Schistosoma: a review

et al. 2021

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Schistosomiasis, a neglected tropical disease (NTD), is one of the most prevalent parasitoses in the World. Certain freshwater snail species are the intermediate host in the life cycle of schistosome species. Controlling snails employing molluscicides is an effective, quick, and convenient intervention strategy to prevent the spread of Schistosoma species in endemic regions. Advances have been made in developing both synthetic molluscicides and molluscicides derived from plants. However, at present, the development of molluscicides is not adapted to the actual demand for snails and schistosoma controlling. We undertake a systematic review of exploitation and application of synthetic molluscicides and molluscicides derived from plants to combat intermediate host snails. The detailed molluscicidal activity, structure–activity relationship, structural feature, and possible mechanism of some molluscicides are also highlighted, which may afford an important reference for the design of new, more effective molluscicides with low environmental impact and realize the aim of controlling schistosome at transmission stages. Supplementary Information The online version contains supplementary material available at 10.1007/s00436-021-07288-4.

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“…Os primeiros estudos dos efeitos de compostos químicos sobre o caramujo B. glabrata, no entanto, foram realizados com vista ao estabelecimento de novos moluscicidas para combate da esquistossomose (Fujinami & Nakamura, 1911apud Komiya, 1964 ; Fujinami e Narabayashi, 1913 apud Komiya, 1964 2 ;Narabayashi, 1915 apud Komiya, 1964 3 ;Hoffman & Zakhary, 1953;Nolan et al, 1953;Bond & Nolan, 1954;Nolan & Bond, 1955;Paulini & Camey, 1965a,b).…”

Section: Descrição Ambiental E Comportamental Do B Glabrataunclassified

“…Em 1965(a), Paulini e Camey testaram os efeitos moluscicida do Planticuivre, um inseticida cujo ingrediente ativo era o dimetil-ditio-carbamato de cobre (cuprobam); o produto não se mostrou muito efetivo no combate ao caramujo, com ação lenta sobre este molusco; porém, com importante efeito sobre peixes e sapos, e nenhum efeito sobre a vegetação aquática. O cobre, aliás, era um dos compostos químicos mais testados antigamente, como um promissor agente moluscicida (Hoffman & Zakhary, 1953;Webbe, 1987). Cheng e Sullivan (1973;1977) (2006) avaliaram, através do teste do letal dominante, os efeitos ocasionados pelo herbicida ácido 2,4-diclorofenoxiacético (2,4-D).…”

Section: Descrição Ambiental E Comportamental Do B Glabrataunclassified

Estudo da resposta do caramujo Biomphalaria glabrata (Say, 1818) frente a estímulos ambientais estressores, com enfoque na proteína HSP70

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The Relationship of Exposure Time to the Molluscicidal Activity of Copper Sulfate 1

Cited by 8 publications

References 0 publications

Field and laboratory evaluation of the influence of copper‐diquat on apple snails in Southern Florida

Field and laboratory evaluation of the influence of copper‐diquat on apple snails in Southern Florida

Molluscicides against the snail-intermediate host of Schistosoma: a review

Estudo da resposta do caramujo Biomphalaria glabrata (Say, 1818) frente a estímulos ambientais estressores, com enfoque na proteína HSP70

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