Integrated pest management of Tuta absoluta: practical implementations across different world regions

Journal of Pest Science - The South American tomato pinworm, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), has invaded most Afro-Eurasian countries and is threatening worldwide tomato...     

An outbreak of pine lappet moth, Kunugia latipennis, in mid-altitude hills of Meghalaya state, India

The pine lappet moth, Kunugia latipennis Walker (Lepidoptera: Lasiocampidae), is the major insect pest of pines found in the northeastern hilly region of India. Recently, an outbreak of lappet moths was observed in the mid-altitude hills of Meghalaya during May?CJune 2011. In this report, attempts are made to describe a recent outbreak of K. latipennis in the region. Females were found to be highly fecund and have the potential to cause severe damage to the pine forest. Incubation and pupal period were found to be 8?±?0.2?days and 16.1?±?0.3?days, respectively. However, many natural regulatory factors were observed during the course of time, which had substantial impact on their survival: these include mainly extreme weather fluctuations and natural enemies. Moths were found to be positively phototrophic; therefore, light traps could be the best option to manage the outbreak.     

Polyphagous caterpillars of Spodoptera litura switch from a trap crop to the main crop,improve fitness,and shorten generation time

Journal of Pest Science - Trap crops are used for pulling the pest load from the main crops toward themselves. Here, we report a switching by a polyphagous pest, Spodoptera litura, from trap crop...     

Mode of inheritance of Indoxacarb resistance in diamondback moth, <Emphasis Type="Italic">Plutella xylostella</Emphasis> (L.) and cross resistance to different groups of pesticides

The development of insecticidal resistance in diamondback moth (DBM) Plutella xylostella has immediate implications for its management. In this study, we examined the mode of inheritance of Indoxacarb resistance in P. xylostella. The indoxacarb-resistant strain (Px-R) was obtained through continuous laboratory selection with increasing doses of indoxacarb in each generation. At the 14th generation of selection, the resistance ratio of Px-R strains was 238 over the susceptible strain (Px-S). The mode of inheritance to Indoxacarb in P. xylostella was examined performing standard reciprocal crosses between Px-R and Px-S and response of Px-R, Px-S and F1 hybrid progenies to Indoxacarb through leaf dip bioassay. The degree of dominance (D) and heritability (h) of F1 hybrid progeny ranged from ?0.001 to 0.0012 and 0.499 to 0.506, respectively. The Indoxacarb resistance was appeared to be autosomal and inherited as a semi-dominant trait. The Px-R strain of P. xylostella showed little cross resistance to cypermethrin and there was no cross resistance to other pesticides viz., chlorpyrifos, spinosad, karanjin, xentari (Bta-Cry1C) and MVP-II (Cry1Ac). Since the Indoxacarb resistance inherited as a semi-dominant trait in P. xylostella, the sub lethal doses and frequent use of indoxacarb should be avoided for the management of P. xylostella. Moreover, Px-R of P. xylostella showed positive cross resistance to synthetic pyrethroids (cypemethrin), therefore indoxacarb and synthetic pyrethroids should not be recommended together for management of P. xylostella.