Diamondback Moth Resistance to Several Synthetic Pyrethroids12

Liu, Ming Yie; Tzeng, Ying-Jeh; Sun, C. N.

doi:10.1093/jee/74.4.393

Cited by 81 publications

(38 citation statements)

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“…Furthermore, although it is likely that resistances of reciprocal crosses are closer to the patrilineal lines, it should not be sex linked, since females, not males in the lepidopteran insect group have heterogametic chromosomes including the DBM (Resh and Cardé, 2003). Several authors have suggested that fenvalerate resistance is inherited through partially recessive genes with no sex linkage in DBM (Liu et al, 1981;Noppun et al, 1986;Hama, 1989;Tanaka and Noppun, 1989). Since we have performed neither backcross experiments nor crossing between F 1 , we did not determine unequivocally whether resistance to fenvalerate was conferred by a single gene or poly- gene in the DBM.…”

Section: Discussionmentioning

confidence: 99%

Genetic relationships between development of insecticide resistance and reduction of egg size as a negative effect on the fitness of the diamondback moth Plutella xylostella (Lepidoptera: Yponomeutidae)

Chen

Sanada‐Morimura

Yanagi

et al. 2006

Appl. Entomol. Zool.

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Reciprocal crosses between susceptible (SS) and resistant (RR) lines to fenvalerate were conducted to determine whether or not there are any genetic relationships between insecticide resistance and reduction in egg size, as well to whether or not they affect the offspring fitness of the diamondback moth, Plutella xylostella. The dose-mortality regression lines of the F 1 hybrid of susceptible females and resistant males (SR) and resistant females and susceptible males (RS) were roughly intermediate between those of parental lines, i.e., SS and RR. This result indicates that the mode of inheritance of fenvalerate resistance was neither complete dominance nor recessive, with no sex-linkage. The egg size of RR lines was significantly smaller than that of the SS lines. The RS and SR lines have an egg size close to that of their own matrilineage. We considered that the mode of inheritance of resistance and that of egg size were different from each other, although the selection experiment showed that there is a negatively correlated response between these parameters. The survival rate of the RR lines was significantly lower than that of the SS lines. However, the survival rate of the RS lines did not differ from that of the SR lines. Reproductive fitness is discussed with regard to different egg sizes among parental lines and reciprocal crosses.

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Section: Discussionmentioning

confidence: 99%

Genetic relationships between development of insecticide resistance and reduction of egg size as a negative effect on the fitness of the diamondback moth Plutella xylostella (Lepidoptera: Yponomeutidae)

Chen

Sanada‐Morimura

Yanagi

et al. 2006

Appl. Entomol. Zool.

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“…Hence, numerous reports on resistance to various kinds of insecticides have been published from various parts of the world.l-9) The reports from Thailand, Taiwan and Malaysia indicated that the diamondback moth has developed resistance to certain synthetic pyrethroids (fenvalerate, permethrin, cypermethrin, etc. ), 3,5,6) In Japan, this insect has participated in serious pests since 1960.10' Furthermore the resistance of this species to certain kinds of insecticides was surveyed and reported.ll) On the other hand, mechanisms of insecticide resistance in the diamondback moth are still ambiguous.3' Hence, in this paper, as the first step to study mechanisms of insecticide resistance, the susceptibility of 4 strains of the diamondback moth, Plutella xylostella L., to 8 insecticides was assessed.…”

Section: Introductionmentioning

confidence: 99%

Susceptibility of Four Strains of the Diamondback Moth, <i>Plutella xylostella</i> L., against Insecticides

1983

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As the first step to clarify the mechanism of insecticide resistance, the susceptibility of 4 strains of the diamondback moth against 4 organophosphorus and 2 carbamate insecticides, cartap and fenvalerate were assessed by the topical application method. The results showed that the resistant strains were highly resistant to 3 organophosphorus compounds (phenthoate, prothiophos and cyanophos), moderately to 2 carbamate insecticides (acephate and methomyl) and cartap, but no obvious resistance was observed for dichlorvos and fenvalerate.

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“…Muitas vezes, são realizadas aplicações sucessivas de produto, o que pode proporcionar a seleção de populações resistentes. Além do mais, são aplicadas misturas de inseticidas, indesejável por motivos econômicos, agressão ao ambiente, impacto aos inimigos naturais e ameaça à saúde do homem e animais (LIU et al, 1981;CHEN et al, 1996). Portanto, devem ser observadas táticas seguras para o ambiente, que mantenham o controle de P. xylostella e possam reduzir o uso de inseticidas convencionais.…”

Section: Introductionunclassified

Efeito de extratos aquosos de Azadirachta indica, Melia azedarach e Aspidosperma pyrifolium no desenvolvimento e oviposição de Plutella xylostella

et al. 2006

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RESUMOForam avaliados a CL 50 e o efeito de extratos aquosos de plantas na biologia, oviposição e período embrionário de Plutella xylostella L. (Lepidoptera: Plutellidae). Para determinação da CL 50 foram utilizadas concentrações entre 0,03 e 0,8 % para amêndoas de Azadirachta indica (A. Juss.) 0,5 e 7,0 % para casca de Aspidosperma pyrifolium (Mart.) e 0,5 e 12,5 % para frutos de Melia azedarach (L.), obtendo-se as CL 50 de 0,06; 2,17 e 2,90%, respectivamente. Verificou-se que os extratos aquosos de todas as espécies vegetais afetaram o desenvolvimento do inseto, principalmente na fase larval. Na fase de pupa, os extratos reduziram a massa e a viabilidade. Houve deformação de adultos para os extratos de A. pyrifolium e M. azedarach e o de A. indica causou maior porcentagem. Todos os extratos possuem efeito tóxico para ovos de P. xylostella, sendo dependente do aumento da concentração. Nos extratos da casca de A. pyrifolium, do fruto de M. azedarach e da amêndoa de A. indica observa-se ação ovicida quando usados na concentração letal de lagartas de primeiro ínstar da praga. Em observações do ovo de P. xylostella com auxílio de um microscópio eletrônico de varredura, verificou-se a existência de microporos onde pode ocorrer a penetração do produto ovicida, além da constatação da textura rugosa da casca do ovo que pode reter ou fixar os extratos.Palavras-chave: plantas inseticidas, traça-das-crucíferas, brássicas. ABSTRACT EFFECT OF AQUEOUS EXTRACTS OF AZADIRACHTA INDICA (A. JUSS), MELIA AZEDARACH (L.) AND ASPIDOSPERMA PYRIFOLIUM (MART.) ON THE DEVELOPMENT AND OVIPOSITION OFPLUTELLA XYLOSTELLA (L.) (LEPIDOPTERA: PLUTELLIDAE)The effects of aqueous extracts of plants on the biology, preference for oviposition and embryonic period of Plutella xylostella were evaluated. Concentrations between 0.03 and 0.8 % for kernel of Azadirachta indica, 0.5 and 7.0% for peel of Aspidosperma pyrifolium and 0.5 and 12.5% for fruits of Melia azedarach were used, with LC 50 values of 0.06; 2.17 and 2.90%, respectively, being obtained. It was verified that the aqueous extracts of all of the appraised vegetable species affected the development of the insect, mainly in the larval phase. In the pupae phase, the extracts reduced the weight and the viability. There was adults' deformation for the extracts of A. pyrifolium and M. azedarach, being it of A. indica what caused larger percentage. Toxics effects on the eggs of P. xylostella were observed for all extracts. The extracts from A. pyrifolium (peel); M. azedarach (fruit) and A. indica (kernel) presented ovicide action in the lethal concentration of caterpillars at first instar of the pest. Observations of P. xylostella eggs with the aid of an electronic microscope showed presence of microspore, revealing ovicide action, besides wrinkled texture of the eggs peel retaining the extracts.

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Diamondback Moth Resistance to Several Synthetic Pyrethroids12

Cited by 81 publications

References 0 publications

Genetic relationships between development of insecticide resistance and reduction of egg size as a negative effect on the fitness of the diamondback moth Plutella xylostella (Lepidoptera: Yponomeutidae)

Genetic relationships between development of insecticide resistance and reduction of egg size as a negative effect on the fitness of the diamondback moth Plutella xylostella (Lepidoptera: Yponomeutidae)

Susceptibility of Four Strains of the Diamondback Moth, <i>Plutella xylostella</i> L., against Insecticides

Efeito de extratos aquosos de Azadirachta indica, Melia azedarach e Aspidosperma pyrifolium no desenvolvimento e oviposição de Plutella xylostella

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