Avaliação do Vampiricida Gel 1% no controle seletivo direto de colônias de Desmodus rotundus / Evaluation of 1-percent Vampiricid Gel in direct selective control of Desmodus rotundus colonies

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The National Program on Control of Herbivore Rabies (PNCRH) concentrates its actions on population control of the diseases main transmitter, the vampire bat of the Desmodus rotundus species, and favors the use of direct and indirect selective methods. This study sought to evaluate the effectiveness of the VAMPIRICID GEL for direct selective control of D. rotundus colonies. Six daytime shelters were selected; in each one a count was taken of the live individuals at the time and then again ten days after treatment. Two shelters per treatment Group were addressed. The Vampiricid Gel was applied on the back of vampire bats in 5-percent (Group 1) and of 10-percent (Group 2) samples of the population. For control (Group 3), 10 percent of the D. rotundus bat population was treated with liquid Vaseline. An evaluation was also made of the aggressions by vampire bats on 3,690 bovines and 133 equids on the 22 properties located within a 3-km radius of the shelters. Fishers Exact and χ2 tests were used with a 1-percent significance level. Under natural conditions, treatment of Groups 1, 2, and 3 reduced by 97.57 percent, 99.30 percent, and 3.6 percent, respectively, the D. rotundus population, and by 92.79 percent, 94.36 percent, and 4.76 percent, respectively, the number of animals attacked, ten days after treatment. Results have shown that the 1-percent VAMPIRICID GEL was effective in significantly reducing the bat population and the number of animals attacked in Groups 1 and 2, as compared with Group 3. There was no significant different between Groups 1 and 2 as regards both reduction of the D. rotundus population and the number of animals attacked. Although the use of 1-percent VAMPIRICID GEL on 5 percent or 10 percent of the vampire bat population has yielded similar results in the D. rotundus populations in the shelters and thus on attacked bovines and equids, its use on 5 percent of the populations was more effective, given the lower operating cost, and can thus be indicated for direct selective control of D. rotundus.

ASSUNTO(S)

medicina veterinaria raiva silvestre chiroptera. wilderness rabies vampire bat morcego hematófago

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