Competitive interactions between species of fresh-water snails: I. Laboratory. IC. Comparative  survival of Biomphalaria glabrata and B. Straminea kept out of water

Barbosa, Frederico Simões; Costa, Denise Pinheiro da; Arruda, F. de A. V.

doi:10.1590/s0074-02761985000200006

Cited by 11 publications

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“…A maior capacidade de dispersão e de vagilidade desta espécie em relação à população de B. glabrata foi também demonstrada em estudos experimentais . Em outro tipo de experimento de laboratório, B. straminea mostrou maior capacidade de resistência à dessecação do que B. glabrata (Barbosa et al, 1985). Ao final de seis meses de observação, nenhum B. glabrata havia sobrevivido, enquanto 10,7% dos B. straminea estavam vivos (p< 0,001).…”

Section: A Exclusão Competitiva Biomphalaria Straminea X Biomphalariaunclassified

“…As observações de Guyard & Pointier (1982), sobre a substituição de B. glabrata por B. straminea, em Martinica, e as de Woodruff et al (1985), sobre a introdução e expansão desta última espécie na China e na Austrália, confirmam a capacidade deste molusco em ocupar os mais diversos ambientes. Essa capacidade invasora estaria associada às características específicas, tais como: vagilidade e agressividade (Michelson & Dubois, 1979;; resistência à dessecação (Oliver & Barbosa, 1956;Barbosa et al, 1985); alta taxa de locomoção e poder de exploração do ambiente (Schall et al, 1986). Acrescenta-se a estes atributos a maior capacidade de sustentação (Carrying capacity) de B. straminea em comparação a B. glabrata (Barbosa et al, 1992).…”

Section: O Estudo Experimental De Campounclassified

“…No entanto, Barbosa et al (1985) e relatam ocorrência de exclusão competitiva entre bionfalárias no Nordeste, e em Belo Horizonte. Os longos experimentos de campo de Guimarães (1981) no Alto São Francisco demonstraram a eficiência de P. haustrum na redução da população de B. glabrata.…”

Section: Introductionunclassified

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Tópicos em Malacologia Médica

Barbosa¹

1995

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FIGURA 29: Seqüência de movimentos, deslocamentos e posturas que caracterizam a saída da água. (A) Estando o caramujo na superfície, ele rompe a película da água. A concha passa a ter uma postura pendente; (8) O caramujo prossegue no seu deslocamento se arrastando, com a concha pendente e a massa cefalopodal aderida a parede lateral do aquário; (C) Uma vez atingida uma certa altura acima do nível da água, o caramujo aí permanece aderido ao vidro lateral do aquário, pela face esquerda da concha BIGGELAAR, J. A. M. van den, 1971. Development of division synchrony and bilateral symmetry in the first quartet of micromeres in eggs of Lymnaea.

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Section: A Exclusão Competitiva Biomphalaria Straminea X Biomphalariaunclassified

Section: O Estudo Experimental De Campounclassified

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Tópicos em Malacologia Médica

Barbosa¹

1995

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“…Studies under semi-natural and field conditions have revealed the competitive superiority of B. straminea over B. glabrata 3,4,5,6,8,9 . Among the factors involved, in addition to low susceptibility to infection by S. mansoni and greater resistance to desiccation, better dispersal capacity and higher vagility were noted for the former species 6,7,14,27 . However, the few existing studies comparing the reproducibility of these two species invariably attribute a higher fecundity rate to B. glabrata 1,2,15,19 .…”

Section: Introductionmentioning

confidence: 99%

Comparative study of the fecundity and fertility of Biomphalaria glabrata (Say, 1818) and Biomphalaria straminea (Dunker, 1848) in a laboratory through self-fertilization and cross-fertilization

Costa

Grault

Confalonieri

2004

Rev. Inst. Med. trop. S. Paulo

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The aim of this study was to compare the fecundity and fertility of B. glabrata and B. straminea by cross- and self-fertilization. To attain this objective, laboratory-raised strains of B. glabrata and B. straminea were used. The former originated from natural breeding grounds in the municipality Paulista, state of Pernambuco, Brazil. The latter originated from irrigation ditches in the municipality of Petrolândia, in the same state. Snail populations of B. glabrata and B. straminea were maintained for 240 days in laboratory. Their fecundity was evaluated by noting the number of egg-masses, eggs and eggs per mass. Their fertility was evaluated by the number of viable eggs and the hatching rate. B. straminea was markedly more fecund than B. glabrata through cross- and self-fertilization, namely: greater egg-mass; higher egg production and more eggs per mass. Regarding fertility, there seemed to be no preferential period for occlusion to occur or a trend in the rhythm of producing viable eggs.

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“…As with other Basommatophora (Escobar 2011), Biomphalaria reproduces by a combination of selffertilization and cross-fertilization, increasing its ability to colonize new habitats. B. tenagophila and B. straminea are also resistant to drought and can survive desiccation during periods without any water, when their metabolic activity is reduced to basal levels (Tuan & Simõ es 1989, Teles, & Marques 1989, Barbosa et al 1985, Barbosa et al 2014.…”

Section: Introductionmentioning

confidence: 99%

The current distribution pattern of Biomphalaria tenagophila and Biomphalaria straminea in the northern and southern regions of the coastal fluvial plain in the state of São Paulo

et al. 2015

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We analyze the current distribution of snails from genus Biomphalaria in the north and south of the coastal fluvial plain in the state of São Paulo, which is part of a large coastal floodplain. Data from twenty-nine collection sites confirmed that the freshwater body in both regions is colonized by Biomphalaria tenagophila and Biomphalaria straminea, which are natural intermediate hosts of Schistosoma mansoni. The abundance of B. straminea in collection sites where only B. tenagophila had previously been recorded indicates the potential for B. straminea to expand in the region. While quantitative analysis of the number of specimens per species showed that local growth of B. tenagophila populations occurs during periods with little rainfall, there is a greater risk of B. tenagophila populations spreading between different water bodies during rainy periods, when heavy rainfall results in water levels rising in the main rivers and flooding caused by water flowing from the Serra do Mar mountain range to the coastal plain. The temperature increase caused by global climate changes and the consequent increasing frequency of high-water levels and floods can be expected to affect the distribution of these snails on the coastal fluvial plain, leading to the risk of a change in the autochthonous transmission pattern of schistosomiasis in the region.

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Competitive interactions between species of fresh-water snails: I. Laboratory. IC. Comparative survival of Biomphalaria glabrata and B. Straminea kept out of water

Cited by 11 publications

References 0 publications

Tópicos em Malacologia Médica

Tópicos em Malacologia Médica

Comparative study of the fecundity and fertility of Biomphalaria glabrata (Say, 1818) and Biomphalaria straminea (Dunker, 1848) in a laboratory through self-fertilization and cross-fertilization

The current distribution pattern of Biomphalaria tenagophila and Biomphalaria straminea in the northern and southern regions of the coastal fluvial plain in the state of São Paulo

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