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1.
Arq. Inst. Biol ; 87: e1192018, 2020. ilus, tab
Article in English | LILACS, VETINDEX | ID: biblio-1145887

ABSTRACT

Froghoppers (Mahanarva spp.) are pests of great economic importance for various regions of Brazil. Many species have a variation in the alar pattern, a parameter that often leads to incorrect identification. We collected froghopper adults in sugarcane fields in the municipalities of Murici and Maceió, in Alagoas, Lagoa de Itaenga and Camutanga, in Pernambuco, São Raimundo das Mangabeiras, in Maranhão, and União and Boa Hora, in the Teresina microregion in Piauí. The froghoppers were assembled and identified and are representatives of three species: M. spectabilis, M. fimbriolata, and M. posticata. This is the first record of M. spectabilis attacking sugarcane fields in the states of Piauí and Maranhão, Brazil. We found the species M. posticata and M. fimbriolata in the sugarcane fields of Alagoas and only M. posticata in Pernambuco.(AU)


As cigarrinhas (Mahanarva spp.) são pragas de grande importância econômica em várias regiões do país. Muitas espécies têm variação no padrão alar, parâmetro que leva muitas vezes à identificação de forma incorreta. Adultos de cigarrinhas foram coletados em canaviais nos municípios de Murici e Maceió em Alagoas, Lagoa de Itaenga e Camutanga em Pernambuco, São Raimundo das Mangabeiras em Maranhão e União e Boa Hora, microrregião de Teresina em Piauí, e foram montados e identificados. As cigarrinhas coletadas são representantes de três espécies M. spectabilis, M. fimbriolata e M. posticata, sendo este o primeiro registro da espécie M. spectabilis atacando canaviais nos estados do Piauí e Maranhão. Em canaviais de Alagoas, foram encontradas as espécies M. posticata e M. fimbriolata e, em Pernambuco, apenas M. posticata.(AU)


Subject(s)
Poaceae , Hemiptera , Pest Control , Insecta
2.
Rev Bras Parasitol Vet ; 19(1): 44-8, 2010.
Article in Portuguese | MEDLINE | ID: mdl-20385059

ABSTRACT

Organic plant extracts and emulsified oil of Azadirachta indica A. Juss (Meliaceae) (neem) were studied to evaluate its effects in control of engorged females of Rhipicephalus (Boophilus) microplus (Canestrini, 1887) in the laboratory. Hexane and alcoholic organic extracts, 2% (weight/volume) were used in tests of immersion for 5 minutes, prepared with seeds, solubilized in dimethylsulfoxide (DMSO) to 1%. The experiment was entirely randomized, consisting of 6 treatments and 5 replicates, each represented by 5 ticks. Control groups consisted of untreated females. Based on the results of this work, we can indicate that the seed extract (hexanic fraction) and óleo emulsionável I¹ concentration to 2% have significant adjuvant potential to control the cattle tick, because, cause the mortality in the first days after the treatment and interfere in the reproduction, showing to be an alternative to acaricides normally used.


Subject(s)
Azadirachta , Glycerides/pharmacology , Plant Extracts/pharmacology , Plant Oils/pharmacology , Rhipicephalus/drug effects , Terpenes/pharmacology , Tick Control/methods , Animals , Female , Laboratories
3.
Rev. bras. parasitol. vet ; 19(1): 44-48, jan.-mar. 2010. tab
Article in Portuguese | LILACS | ID: lil-604634

ABSTRACT

Extratos vegetais orgânicos e óleos emulsionáveis de Azadirachta indica A. Juss (Meliaceae) (nim) foram estudados com o objetivo de avaliar seus efeitos no controle de fêmeas ingurgitadas de Rhipicephalus (Boophilus) microplus (Canestrini, 1887) em laboratório. Foram utilizados extratos orgânicos hexânicos e alcoólicos a 2 por cento (peso/volume), em testes de imersão, durante 5 minutos, preparados com sementes, solubilizados em dimetilsulfóxido (DMSO) a 1 por cento. O experimento foi inteiramente casualizado, sendo constituído por 6 tratamentos e 5 repetições, cada uma delas representada por 5 carrapatos. O grupo controle consistiu de fêmeas sem tratamento. Com base nos resultados deste trabalho, pode-se indicar que os tratamentos extrato de semente (hexano) e óleo emulsionável I¹, em concentração a 2 por cento, possuem significativo potencial adjuvante de controle do carrapato bovino, pois ocasionam a mortalidade nos primeiros dias após o tratamento e interferem na reprodução, mostrando ser uma alternativa aos carrapaticidas normalmente utilizados.


Organic plant extracts and emulsified oil of Azadirachta indica A. Juss (Meliaceae) (neem) were studied to evaluate its effects in control of engorged females of Rhipicephalus (Boophilus) microplus (Canestrini, 1887) in the laboratory. Hexane and alcoholic organic extracts, 2 percent (weight/volume) were used in tests of immersion for 5 minutes, prepared with seeds, solubilized in dimethylsulfoxide (DMSO) to 1 percent. The experiment was entirely randomized, consisting of 6 treatments and 5 replicates, each represented by 5 ticks. Control groups consisted of untreated females. Based on the results of this work, we can indicate that the seed extract (hexanic fraction) and óleo emulsionável I1 concentration to 2 percent have significant adjuvant potential to control the cattle tick, because, cause the mortality in the first days after the treatment and interfere in the reproduction, showing to be an alternative to acaricides normally used.


Subject(s)
Animals , Female , Azadirachta , Glycerides/pharmacology , Plant Extracts/pharmacology , Plant Oils/pharmacology , Rhipicephalus/drug effects , Terpenes/pharmacology , Tick Control/methods , Laboratories
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