RESUMO
BACKGROUND: In São Paulo city, rodent infestation is considered to be a serious public health problem and is the object of a municipal rodent control programme. One of the most important routine methods involves baiting in sewers, using bromadiolone block bait in a pulsed baiting strategy. It has been observed that, after each pulse, bait is not always consumed, and its appearance is altered, which has led to concerns about efficacy. We assessed whether exposure to sewer conditions influences the palatability and efficacy of rodenticide baits to Norway rats (Rattus norvegicus). Baits containing bromadiolone as active ingredient were placed in sewers, removed after 30 days and offered to rats in a two-choice food trial and a no-choice food trial. RESULTS: The appearance of the rodenticide baits changed after 30 days exposure to sewer conditions, but they continued to be palatable and effective against rats. The level of mortality was considered to be satisfactory, 75% in the two-choice food trial and 100% in the no-choice food trial. CONCLUSION: Results support the reuse of rodenticide block bait in rodent control. It seems to be justified to continue using/reuse baits even when their appearance has changed after 30 days exposure in sewer systems.
Assuntos
4-Hidroxicumarinas/toxicidade , Ratos/fisiologia , Controle de Roedores/métodos , Rodenticidas/toxicidade , Animais , Comportamento Alimentar/efeitos dos fármacos , Feminino , Masculino , Controle de Roedores/instrumentaçãoAssuntos
Controle de Roedores/métodos , Animais , México , Camundongos , Ratos , Controle de Roedores/instrumentaçãoRESUMO
Describe los tipos de roedores que se encuentran en la Ciudad de Buenos Aires, así como los inconvenientes que causan
Assuntos
Ratos , Controle de Roedores/instrumentação , Controle de Roedores/métodosRESUMO
Describe los tipos de roedores que se encuentran en la Ciudad de Buenos Aires, así como los inconvenientes que causan