scholarly journals The Olfactory Co-receptor Orco from the Migratory Locust (Locusta migratoria) and the Desert Locust (Schistocerca gregaria): Identification and Expression pattern

2012 ◽  
Vol 8 (2) ◽  
pp. 159-170 ◽  
Author(s):  
Ying Yang ◽  
Jürgen Krieger ◽  
Long Zhang ◽  
Heinz Breer
Keyword(s):  
Expression Pattern ◽  
Schistocerca Gregaria ◽  
Locusta Migratoria ◽  
Desert Locust ◽  
Migratory Locust

scholarly journals Effects of water extracts of frass from three locust species and various plants on oviposition and embryonic development in the desert locust, Schistocerca gregaria

2019 ◽  
Vol 28 (2) ◽  
pp. 195-204
Author(s):  
Seiji Tanaka ◽  
Toyomi Kotaki ◽  
Yudai Nishide ◽  
Amel Ben-Hamouda ◽  
Khemais Abdellaoui ◽  
...  
Keyword(s):  
Plant Species ◽  
Schistocerca Gregaria ◽  
Morphological Changes ◽  
Locusta Migratoria ◽  
Water Extract ◽  
Hatching Rate ◽  
Desert Locust ◽  
Leaf Extracts ◽  
Migratory Locust ◽  
Hatching Rates

The water extract of desert locust, Schistocerca gregaria, frass collected in the wild had an oviposition inhibitory (OI) effect when mixed with sand and presented to adults. Likewise, the leaves of six plant species, as well as frass produced by desert locusts fed with these plants, exerted OI effects when compared with the control sand wetted with water alone. In general, frass extracts had a greater OI effect than the extracts of leaves. The OI effect was also observed when adult desert locusts were exposed to extracts of frass produced by two other locusts, the Bombay locust, Nomadacris succincta, and the migratory locust, Locusta migratoria, fed with rescue grass, Bromus catharticus. Among the three species of locust, desert locust and migratory locust frass exerted a greater OI effect than Bombay locust frass. Frass samples extracted with hot and cool water produced similarly high OI effects, indicating that bacterial involvement during extraction is unlikely. Hatching rates of desert locusts were significantly reduced by extracts of all of the above mentioned frass when the extracts were mixed with sand and used to incubate the eggs. In contrast, the lethal effects of leaf extracts on the hatching rates varied depending on the plant species. The embryos became deformed within four days when three-day-old eggs were incubated in sand containing frass extracts from desert locusts fed with rescue grass, whereas no apparent morphological changes were observed when seven-day-old eggs were similarly tested, although their hatching rate was significantly reduced.

Operational Aspects of Locust Control

1966 ◽  
Vol 70 (672) ◽  
pp. 1077-1081
Author(s):  
D. Yeo
Keyword(s):  
Schistocerca Gregaria ◽  
Locusta Migratoria ◽  
Broad Band ◽  
Central Africa ◽  
Nomadacris Septemfasciata ◽  
Red Locust ◽  
Migratory Locust ◽  
Locusta Migratoria Migratorioides ◽  
The World ◽  
Locust Control

The crops of every continent of the world have been devastated from time to time by locusts or grasshoppers. To mention three major locust species, the Desert Locust (Schistocerca gregaria Forsk.) has caused havoc in a broad band of the world stretching from East Pakistan to Senegal and from the Mediterranean to Central Africa, the Red Locust (Nomadacris septemfasciata Serv.) has infested East, Central and Southern Africa, and the African Migratory Locust (Locusta migratoria migratorioides Rch. and Frm.) has plagued most of Africa south of the Sahara.What happens in one part of a plague area can significantly affect the situation in others and locust control is therefore an international problem, requiring international co-operation. Many of the threatened areas are countries where standards of living are not high and local agriculture is a mainstay of the economy; the regions are often inhospitable and lack modern roads, aerodromes and lines of communication.

A Note on the Use of Dried Poison Bait against Locusts in the Sudan

1929 ◽  
Vol 20 (1) ◽  
pp. 99-101 ◽  
Author(s):  
Harold H. King
Keyword(s):  
Red Sea ◽  
Rainy Season ◽  
Arid Regions ◽  
Schistocerca Gregaria ◽  
Locusta Migratoria ◽  
Extended Period ◽  
The Other ◽  
Desert Locust ◽  
The Arid Regions ◽  
Species Being

There are in the Sudan three species of migratory locusts : Anacridium moestum melanorhodon, Walk., or the tree locust, Locusta migratoria, L., and Schistocerca gregaria, Forsk., sometimes termed the desert locust. Of these the last-named is the plague locust of the country—the other two species being relatively unimportant—and is the species referred to as the “ locust ” throughout this paper.From 1899 till 1917 swarms of locusts occurred annually, but then followed a period of ten years during which the Sudan suffered no damage from this pest. In 1927 and again in the succeeding year the locust reappeared as a plague, and there is little doubt but that it is to be expected year by year over an extended period and until the cycle either naturally terminates or is artificially brought to an end. The swarms of fliers appear from May onwards and oviposit in July and August when and where in the arid regions sufficient rain has fallen, the resulting generation of adults emigrating in October. A certain amount of breeding takes place during the winter on the Red Sea littoral, where winter rains occur, but this district is relatively small and easily dealt with ; the main problem is how to prevent breeding during the summer rainy season throughout the vast areas of the central and northern Sudan.

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