Forecasting of outbreaks ofSpodoptera exempta Wik. (Lep., Noctuidae) based on sex-pheromone trapping in the republic of Yemen

1991 ◽  
Vol 64 (5) ◽  
pp. 93-96
Author(s):  
O. M. Nasseh ◽  
I. A. Moharam
Insects ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 192 ◽  
Author(s):  
Qing-Hua Chen ◽  
Feng Zhu ◽  
Zhihua Tian ◽  
Wan-Min Zhang ◽  
Rong Guo ◽  
...  

Several lepidopteran species share the same pheromone blend consisting of (Z)-11-hexadecenal (Z11-16:Ald) and (Z)-9-hexadecenal (Z9-16:Ald) at different ratios and active doses. In rice pest Chilo suppressalis, (Z)-11-hexadecenol, (Z11-16:OH) and octadecanal (18:Ald) were identified as minor components in the pheromone gland of female moths, and these components were previously not considered as part of the sex pheromone of C. suppressalis. Z11-16:Ald, Z9-16:Ald and (Z)-13-octadecenal (Z13-18:Ald) frequently trapped other lepidopteran species, such as rice pests Scirpophaga incertulas and Mythimna separate, corn and vegetable pests Helicoverpa armigera in the field, suggesting a lack of specificity in the pheromone blend. Our data showed that the minor component Z11-16:OH did not have a synergistic effect on the attractiveness of the blend to C. suppressalis; however, pheromone mixtures containing Z11-16:OH failed in trapping male H. armigera moths. We confirmed the identity and specificity of the C. suppressalis sex pheromone and demonstrated that Z11-16:OH plays a key role in the reproductive isolation of C. suppressalis, M. separata, and H. armigera moths, and a similar role of Z9-18:Ald in that of S. incertulas and C. suppressalis. This phenomenon could be more widely applicable to interspecific interactions in the pheromone communication between insects, which is crucial to developing the electronic automatic counting device for automatically monitoring the pest population by pheromone trapping based on its species specificity.


2017 ◽  
Vol 79 (4) ◽  
pp. 440
Author(s):  
A.T. Rani ◽  
A. K. Chakravarthy ◽  
Vasudev Kammar ◽  
M. S. Prabhakara

1976 ◽  
Vol 108 (10) ◽  
pp. 1037-1040 ◽  
Author(s):  
C. R. MacLellan

AbstractThe intensive use of sex pheromone traps in an insecticide-free apple orchard from 1972 to 1974 reduced the codling moth population and level of fruit damage. The sex ratio of bait-trapped adults indicated that the male population was being reduced by the pheromone traps. In commercial orchards pheromone trapping of males suppressed codling moth damage to fruit but the amount of damage was above acceptable economic levels.


2012 ◽  
Vol 38 (7) ◽  
pp. 846-853 ◽  
Author(s):  
G. V. P. Reddy ◽  
Nirupa Gadi ◽  
Anthony J. Taianao

Author(s):  
Anarbaev A.R. ◽  
◽  
Akhmedjanova K.A. ◽  

This article provides data on the harmfulness, distribution and lifestyle of the apple sawdust widely noted in recent years in the intensive orchards of the republic. In order to determine the effectiveness of insecticides against olm arrakashi, observations were first carried out based on the sex pheromone. On this basis, in three variants, the drugs Dalate Plus 10% ae, Entovant 15% ae, Protect 5% em.k were tested, a higher efficiency was observed in the variant where the drug Dalate Plus 10% ae was used, - 0,2 l / ha, where the biological efficiency was 86.7% in comparison with the control.


AGROFOR ◽  
2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Dina ELISOVETCAIA ◽  
Livia CALESTRU ◽  
Cristina ȚUGULEA ◽  
Valeriu DERJANSCHI

The box tree moth Cydalima perspectalis (Walker, 1859) (Lepidoptera: Crambidae), dangerous pest boxwood plants in East Asia (China, Japan and Korea), is currently officially present in 35 countries of the Europe. In the plantations of Buxus sempervirens in the central zone of the Republic of Moldova, a new invasive pest C. perspectalis was revealed in several localities. As a result of studying the biological peculiarities, it was found that the phytophage develops in the republic in three generations, wintering at the stage of larvae of 2-3 ages. The flight of imago in spring begins in May, the next generations appear in the middle and end of summer. Flight of imago and oviposition can continue until September-October with overlapping generations. The development of eggs at a temperature of + 25 ± 2 oC continued 3-5 days on average, the development of larvae was 20-36 days, the stage of the pupa – 12 ± 1.0 days. Lowering the temperature increased the duration of each stage. Moldovan populations box tree moth, as well as all the other populations described earlier from Asia and Europe, have several different types of wing colouring – typical (white), intermediate and melanic morphs. Pest monitoring is required to control population density. To manage the density of pest populations, it is necessary to use both traps with sex pheromone and microbiological and chemical preparations, depending on the situation.


1974 ◽  
Vol 3 (1) ◽  
pp. 192-194 ◽  
Author(s):  
E. F. Taschenberg ◽  
R. T. CardÉ ◽  
A. Hill ◽  
J. P. Tette ◽  
W. L. Roelofs

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