The influence of Physa marmorata (Mollusca; Psysidae)on the oviposition of several planorbid hosts of Schistosoma Mansoni

Guimarães, Carlos Tito; Soares, Delza de Moura; Schuster, Leonídia Maria R.

doi:10.1590/s0074-02761987000300018

Cited by 2 publications

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“…In the present study both laboratory and field observations were made with a view to evaluating the interactions between introduced populations of thiarids and autochthonous ones of planorbids. Experiments performed by Guimarães (1983) with P. haustrum and P. marmorata (Guimarães et al 1987) provided similar results to those of the present study. In the field a reduction was followed by the disappearance of the planorbid populations (Table).…”

Section: Discussionsupporting

confidence: 88%

Possible competitive displacement of planorbids by Melanoides tuberculata in Minas Gerais, Brazil

Guimarães

Souza

Soares

2001

Mem. Inst. Oswaldo Cruz

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Section: Discussionsupporting

confidence: 88%

Possible competitive displacement of planorbids by Melanoides tuberculata in Minas Gerais, Brazil

Guimarães

Souza

Soares

2001

Mem. Inst. Oswaldo Cruz

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“…infected by Echinostomatidae (Souza et al, 1998). There are records of the genus Physa possibly hosting larval forms of trematodes that may interfere in the mollusks' community structure (Vigueras and Moreno, 1938;Richards, 1964;Anderson and Fried, 1987;Guimarães et al, 1987;Kanev, et al, 1998;McCarthy, 1999;Degueurce et al, 1999;Snyder and Esch, 1993;Kosanke et al, 1988;).…”

Section: Introductionmentioning

confidence: 99%

Determination of the lethal doses LD50 and LD90 of Euphorbia splendens var. hislopii latex on Physa cubensis Pfeiffer

Santos¹,

Valin²,

Ferrão-Filho³

2012

Ambi-Agua

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The genus Physa are among the most common and widespread fresh-water snails and are frequently associated with the genus Lymnaea and Biomphalaria, typically occupying the same habitat and being hosts of trematodes that can cause disease in humans. Several studies have evaluated the control of snails through the use of plant-derived molluscicides; however, few such studies exist regarding the genus Physa. Determining the correct lethal doses of [latex of Euphorbia splendens] is important for the control of the Physa cubensis snail. In one experimental model, 150 snails from Jacarepaguá, Rio de Janeiro, RJ were used. After acclimatization for 72 hours, the snails were divided into groups of 10 and placed into beakers containing different doses, each at a temperature of 26±1ºC and a relative humidity of 80±10%. The results demonstrated LD 50 of 1.08 µL/L and LD 90 of 3.41 µL/L, without significant changes in the physical or chemical parameters of the solutions. We conclude that E. splendens latex had a significant effect on P. cubensis in the laboratory setting.

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The influence of Physa marmorata (Mollusca; Psysidae)on the oviposition of several planorbid hosts of Schistosoma Mansoni

Cited by 2 publications

References 0 publications

Possible competitive displacement of planorbids by Melanoides tuberculata in Minas Gerais, Brazil

Possible competitive displacement of planorbids by Melanoides tuberculata in Minas Gerais, Brazil

Determination of the lethal doses LD50 and LD90 of Euphorbia splendens var. hislopii latex on Physa cubensis Pfeiffer

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