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Dive into the research topics where Adriana Helena Lau is active.

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Featured researches published by Adriana Helena Lau.


Zoological Science | 2007

Biogeography and Karyotypes of Freshwater Planarians (Platyhelminthes, Tricladida, Paludicola) in Southern Brazil

Tanise Knakievicz; Adriana Helena Lau; Daniel Prá; Bernardo Erdtmann

Abstract In the Tricladida (Platyhelminthes), the incidence of different biotypes identified by several ploidy levels is very common. Planarians collected in the State of Rio Grande do Sul were identified using cytogenetics. Different species distributions were observed with respect to Rio Grande do Suls geomorphology, which could have been caused by their different microhabitats. Girardia tigrina and G. anderlani consisted of diploid and triploid individuals, whereas G. schubarti showed diploids, triploids, and mixoploids; for all these species, individuals of different ploidies were sympatric. Only for diploid G. anderlani were B chromosomes observed. These B chromosomes seem to have an irregular segregational behavior during mitosis, and possibly also during meiosis. However the processes (e.g., selection, mutation) of maintaining 2n, 3n, and 2n/3n individuals within natural populations of G. schubarti remain to be clarified.


Mutation Research-genetic Toxicology and Environmental Mutagenesis | 2005

Environmental genotoxicity assessment of an urban stream using freshwater planarians.

Daniel Prá; Adriana Helena Lau; Tanise Knakievicz; Flávia Rosa Carneiro; Bernardo Erdtmann


Archive | 2001

Biomonitoramento das águas da região metropolitana de Porto Alegre (RS) utilizando planárias

Daniel Prá; Adriana Helena Lau; Tanise Knakievicz; Flávia Rosa Carneiro; Carlos Eduardo Ferro; Bernardo Erdtmann


Archive | 2001

Avaliação da genotoxicidade das águas da Bacia do Dilúvio (RS) pelo ensaio Cometa com planárias

Daniel Prá; Adriana Helena Lau; Tanise Knakievicz; Flávia Rosa Carneiro; Bernardo Erdtmann


Archive | 2000

Evolução da linhagem celular triplóide em planárias mixoplóides

Flávia Rosa Carneiro; Adriana Helena Lau; Tanise Knakievicz; Daniel Prá; Amanda Manoela Simões de Vargas; Gabriel Jacobi Segura; Bernardo Erdtmann


Archive | 2000

Aprimoramento da técnica de cariotipagem de planárias

Flávia Rosa Carneiro; Adriana Helena Lau; Tanise Knakievicz; Daniel Prá; Amanda Manoela Simões de Vargas; Gabriel Jacobi Segura; Bernardo Erdtmann


Archive | 2000

Planárias como bioindicadoras da genotoxicidade ambiental : perspectivas e desafios

Daniel Prá; Adriana Helena Lau; Tanise Knakievicz; Flávia Rosa Carneiro; Gabriel Jacobi Segura; Bernardo Erdtmann


Archive | 1999

Distribuição do gênero Girardia (platyhelminthes, tricladida, paludicola) na bacia do Guaíba

Daniel Prá; Adriana Helena Lau; Tanise Knakievicz; Ana Maria Leal Zanchet; Bernardo Erdtmann


Archive | 1998

Estudo da sensibilidade de planárias nativas do RS à mutagênicos ambientais

Aline Pedroso Lorenz; Adriana Helena Lau; Daniel Prá; Temenouga N. Guecheva; Tanise Knakievicz; Bernardo Erdtmann


Archive | 1998

Estudo da reprodução em planárias do Rio Grande do Sul

Tanise Knakievicz; Adriana Helena Lau; Aline Pedroso Lorenz; Daniel Prá; Temenouga N. Guecheva; Bernardo Erdtmann

Collaboration


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Bernardo Erdtmann

University of Caxias do Sul

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Tanise Knakievicz

Universidade Federal do Rio Grande do Sul

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Daniel Prá

Universidade de Santa Cruz do Sul

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Flávia Rosa Carneiro

Florida International University

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Temenouga N. Guecheva

Universidade Federal do Rio Grande do Sul

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