influence of different host plant cultivars on nutritional indices of plutella xylostella (lepidoptera: plutellidae)

Sublethal Effects of Fenoxycarb on the Plutella xylostella (Lepidoptera: Plutellidae)

The effects of fenoxycarb, a Juvenile hormone analogue, at sublethal concentrations were tested on some biological parameters of Plutella xylostella (L.) in two consecutive generations. The calculated LC10, LC25, and LC50 values of the insecticide were 21.58, 43.25, and 93.62 mg/liter on third-instar larvae, respectively. Fenoxycarb significantly reduced pupal weight and oviposition period in p...

Host Selection Behavior and the Fecundity of Plutella xylostella (Lepidoptera: Plutellidae) on Multiple Host Plants

Insect herbivores often have higher densities on host plants grown in monocultures than those in diverse environments. The underlying mechanisms are thought to be that polyphagous insects have difficulty in selecting food or oviposition sites when multiple host plants exist. However, this hypothesis needs to be extensively investigated. Our field experiments revealed that the population of the ...

Evaluating trap crops for diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae).

Potential trap crops for the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), were evaluated through a series of ovipositional preference and larval survival experiments in outdoor screenhouses in 2002 and 2003. Hosts examined as trap crops were glossy and waxy collards, Brassica oleracea L. variety acephala; Indian mustard, Brassica juncea (L.) Czern; and yellow rocket, B...

Feeding and oviposition preferences of the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae) on six Brassicaceae host plant species

Demographic parameters of the diamondback moth, Plutella xylostella (Lep.: Plutellidae) on five rapeseed cultivars

شب‌پره‌ی پشت الماسی‌،‌ (Plutella xylostella (L.) (Lep.:Plutellidae،  یکی از مخرب‌ترین آفات گیاهان چلیپیان در سراسر دنیا است. در این تحقیق پارامتر‌های دموگرافیک این حشره روی پنج رقم کلزا شامل لیکورد، مودنا، اکاپی، RGsoo3و REGXkobra بررسی شد. آزمایش‌ها در اطاقک رشد با دمای 1±25 درجه‌ی سانتی‌گراد،‌ رطوبت نسبی 5±60 درصد و دوره‌نوری 16 ساعت روشنایی و 8 ساعت تاریکی انجام شد. مرگ و میر مراحل قبل از بل...

Chronic Sublethal Effects of Cantharidin on the Diamondback Moth Plutella xylostella (Lepidoptera: Plutellidae)

The diamondback moth, Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae), is a major pest of cruciferous vegetables worldwide. Cantharidin, a natural toxin isolated from blister beetles, has been reported to be toxic to P. xylostella. However, little is known on the chronic sublethal effects of cantharidin on this species. In this study, we assessed the changes of susceptibility, develop...