Natural Enemies of the Sugar Beet Army Worm, Spodoptera exigua (Lepidoptera: Noctuidae) in Northeast Iran

2018 ◽  
Vol 127 (5) ◽  
pp. 446-464 ◽  
Author(s):  
Reyhaneh Darsouei ◽  
Javad Karimi ◽  
Mohammad Ghadamyari ◽  
Mojtaba Hosseini
Keyword(s):  
Sugar Beet ◽  
Natural Enemies ◽  
Spodoptera Exigua ◽  
Lepidoptera Noctuidae ◽  
Beet Army Worm ◽  
Northeast Iran ◽  
Army Worm

SYNERGISM OF PYRETHROIDS BY PIPERONYL BUTOXIDE AND MGK-264 AGAINST HELIOTHIS VIRESCENS, SPODOPTERA EXIGUA, AND SPODOPTERA FRUGIPERDA (LEPIDOPTERA: NOCTUIDAE)1

1988 ◽  
Vol 23 (3) ◽  
pp. 229-233
Author(s):  
J. A. Joyce ◽  
R. J. Ottens ◽  
G. A. Herzog ◽  
M. H. Bass
Keyword(s):  
Spodoptera Frugiperda ◽  
Heliothis Virescens ◽  
Spodoptera Exigua ◽  
Synergistic Effects ◽  
Fall Armyworm ◽  
Piperonyl Butoxide ◽  
Tobacco Budworm ◽  
Lepidoptera Noctuidae ◽  
Beet Army Worm ◽  
Army Worm

Laboratory cultures of field-collected larval tobacco budworm, Heliothis virescens (F.), beet army worm, Spodoptera exigua (Hübner), and fall armyworm, S. frugiperda (J. E. Smith) were bioassayed for response to three pyrethroids in combination with piperonyl butoxide (PBO), or MGK-264. The greatest synergistic effects were seen in S. exigua which also displayed the greatest tolerance to pyrethroids without synergists. The highest SR50 (synergist ratio) value for S. exigua was 22.1 with fenvalerate-PBO mixed in a ratio of 1:5, the highest for S. frugiperda was 4.6 with fenvalerate-MGK-264 1:5, and the highest for H. virescens was 1.3 with permethrin-MGK-264 1:5 or with fenvalerate-PBO 1:5.

Spodoptera exigua. [Distribution map].

1972 ◽  
Author(s):  
Keyword(s):  
Spodoptera Exigua ◽  
Pacific Islands ◽  
Distribution Map ◽  
Irian Jaya ◽  
Ascension Island ◽  
Socotra Island ◽  
Beet Army Worm ◽  
Yemen Arab Republic ◽  
Army Worm ◽  
Distribution In Europe

Abstract A new distribution map is provided for Spodoptera exigua (Hb.) (Laphygma exigua[Spodoptera exigua] Hb.) (Lep., Noctuidae) (Beet Army Worm, Lucerne Caterpillar). Host Plants: Sugar beet, cotton, lucerne, tobacco, tomato. Information is given on the geographical distribution in EUROPE (excl. USSR), Bulgaria, France, Gibraltar, Greece, Italy, Portugal, Sicily, Spain, Yugoslavia, ASIA (excl. USSR), Afghanistan, Bangladesh, Burma, Cambodia, China, Cyprus, India, Indonesia, Iran, Iraq, Israel, Jammu & Kashmir, Japan, Jordan, Korea, Laos, Lebanon, Pakistan, Philippines, Saudi Arabia, Sikkim, South Yemen, Sri Lanka, Syria, Taiwan, Thailand, Turkey, Vietnam (North), Yemen Arab Republic, USSR, AFRICA, Algeria, Ascension Island, Botswana, Burundi, Cameroun, Canary Islands, Dahomey, Egypt, Ethiopia, Ghana, Guinea, Ivory Coast, Kenya, Lesotho, Libya, Madagascar, Madeira, Malawi, Mali, Morocco, Mozambique, Niger, Rhodesia, Rwanda, Senegal, Socotra Island, Somalia, South Africa, Sudan, Swaziland, Tanzania, Togo, Tunisia, Upper Volta, Zaire, AUSTRALASIA and PACIFIC ISLANDS, Australia, Hawaii, Irian Jaya, NORTH AMERICA, Canada, Mexico, U.S.A., WEST INDIES.

scholarly journals Impact of an Exotic Invasive Pest, Spodoptera frugiperda (Lepidoptera: Noctuidae), on Resident Communities of Pest and Natural Enemies in Maize Fields in Kenya

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1074
Author(s):  
Bonoukpoè Mawuko Sokame ◽  
Boaz Musyoka ◽  
Julius Obonyo ◽  
François Rebaudo ◽  
Elfatih M. Abdel-Rahman ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
Invasive Pest ◽  
Growth Stages ◽  
Insect Communities ◽  
Exotic Invasive Species ◽  
Before And After ◽  
Exotic Invasive ◽  
Lepidoptera Noctuidae

The interactions among insect communities influence the composition of pest complexes that attack crops and, in parallel, their natural enemies, which regulate their abundance. The lepidopteran stemborers have been the major maize pests in Kenya. Their population has been regulated by natural enemies, mostly parasitoids, some of which have been used for biological control. It is not known how a new exotic invasive species, such as the fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera, Noctuidae), may affect the abundance and parasitism of the resident stemborers. For this reason, pest and parasitism surveys have been conducted, before and after the FAW invaded Kenya, in maize fields in 40 localities across 6 agroecological zones (AEZs) during the maize-growing season, as well as at 3 different plant growth stages (pre-tasseling, reproductive, and senescence stages) in 2 elevations at mid-altitude, where all maize stemborer species used to occur together. Results indicated that the introduction of the FAW significantly correlated with the reduction of the abundance of the resident communities of maize stemborers and parasitoids in maize fields; moreover, the decrease of stemborer density after the arrival of FAW occurred mostly at both reproductive and senescent maize stages. It also suggests a possible displacement of stemborers by FAW elsewhere; for example, to other cereals. However, since this study was conducted only three years after the introduction of the FAW, further studies will need to be conducted to confirm such displacements.

Sign in / Sign up

Export Citation Format

Share Document