Pectinophora gossypiella

Pectinophora gossypiella (Saunders) Prodenia eridania (Cramer)... 

A SN reaction-based domino route to clerodane diterpenoid tanabalin (2-488) [258] has been described by Watanabe s group (Scheme 2.111) [259]. This natural product is interesting as it exhibits potent insect antifeedant activity against the pink bollworm, Pectinophora gossypiella, a severe pest of the cotton plant The domino sequence towards the substituted trans-decalin 2-487 as the key scaffold is induced by an intermolecular alkylation of the (5-ke toes ter 2-484 with the iodoalkane 2-483 followed by an intramolecular Michael addition/aldol condensation (Robin-... 

Another role of bluelight is exhibited by the moth Pectinophora gossypiella. A circadian rhythm of egg hatching can be initiated with a brief light pulse. The action spectrum (similar to Fig. 16 2,27)) again suggests a flavin photoreceptor. 

The pink bollworm (Pectinophora gossypiella Saund.), considered to be potentially the worst pest of cotton in the United States, occurs throughout the major cotton-producing areas in Mexico, Venezuela, Colombia, Brazil, and Argentina. It probably causes more damage to cotton in the tropical Americas than any other insect. 

Cuts from the silica gel column were incorporated into artificial diets optimized for several economically-important agricultural pest insects, the pink bollworm Pectinophora gossypiella> the tobacco budworm Heliothis virescens> the corn earworm H. zea and the fall armyworm Spodoptera frugiperda. > Monitoring with this artificial diet bioassay, further column chromatography and preparative TLC on silica gel in diethylether-petrol yielded five... 

S 3- > 3 S o 2. rt o B 3 A. reptans Labiatae Ajugareptansones A B Spodoptera exempta, Schistocerca gregaria, Bombyx mori, Pectinophora gossypiella Spodoptera littoralis (29, 30) ... 

Leaves (isoflavonoids) includens) larvae of Pectinophora gossypiella 376... 

Figure 4. Electron micrograph of a pink bollworm, Pectinophora gossypiella, after ingestion of the crude methanol extract of Ajuga remota roots. This insect has three head capsules that mask its functiorml mouthparts- The insect eventually starved to death. Magnification X 113.

Collins, R. D. and Carde, R. T. (1985). Variation in and heritability of aspects of pheromone production in the pink bollworm moth, Pectinophora gossypiella (Lepidoptera Gelechiidae). Annals of the Entomological Society of America 78 229-234. 

Haynes, K. F. and Baker, T. C. (1988). Potential for evolution of resistance to pheromones worldwide and local variation in chemical communication system of the pink bollworm moth, Pectinophora gossypiella. Journal of Chemical Ecology 14 1547-1560. 

The gelechid moth Pectinophora gossypiella uses (7Z,llZ)-7,ll-hexadecadienyl acetate 300 and (7Z, 11 )-7,11-hexadecadienyl acetate 313 as its sex pheromones. Another moth of the same family, the angouis grain moth Sitotroga cerealella uses only the (Z, )-compound 313. Sonnet synthesized the (Z,Z)-7,11-alkadienyl acetate... 

Figure 6. Communication disruption of Pectinophora gossypiella in 0.01 ha plots in Egypt with microencapsulated pheromone applied at 5 g a.i./ha. Key control...

Platyptilia carduidactyla Lymantria dispar Synanthedon exitiosa Pectinophora gossypiella Choristoneura fumiferana Heliothis virescens Eucosma sonomana... 

In H. virescens, loss of expression of a cadherin-like protein was found to be associated with CiylA toxin resistance and consequently this protein plays a crucial role in B. thuringiensis toxicity in vivo [149]. In the laboratory-selected resistant H. virescens strain YHD2, a retrotransposon insertion in the cadherin gene was linked to high levels of CtylAc resistance. More recently, disruption of a cadherin gene may also be linked to the development of field resistance to CiylA toxins in the pink boUworm, Pectinophora gossypiella [150]. 

Ouye and Butt 32) have recently shown that a stable sex attractant for males can be extracted from copulating pairs of pink boUworm moths [Pectinophora gossypiella (Saunders)], with ether or methylene chloride, and Allen and coworkers ) have reported the extraction of a potent sex attractant from the abdomens of female tobacco homworm moths [Protoparce sexta (Johannson) ] with these same solvents. The chemical nature of these attractants as well as that of the southern armyworm moth [Prodenta eridania (Cramer) ] is at present under investigation in U. S. Department of Agriculture laboratories. 

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