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Actions of azadirachtin, a plant allelochemical, against insects
Binding studies on locust testes and Spodoptera Sf9 cells have shown that the competitive binding of the different analogues of azadirachtin to these binding sites occurs in a similar order of potency to that found with antifeedant and IGR bioassays, suggesting a causal link between specific binding to membrane proteins and the ability of the molecule to exert biological effects.
Responses of Spodoptera littoralis larvae to Tunisian plant extracts and to neo-clerodane diterpenoids isolated from Ajuga pseudoiva leaves.
Sensory coding of feeding deterrents in phytophagous insects.
Behavioral and electrophysiological study of antifeedant mechanisms associated with polyhydroxy alkaloids
In S. littoralis, the neurons responding specifically to the alkaloids DMDP, DAB-1, and castanospermine and to the sugars fructose, sucrose, and glucose are more active when the compounds are applied singly than when an alkaloid and a sugar are applied together.
Influence of species of host plants on the predation of thrips by Neoseiulus cucumeris, Iphiseius degenerans and Orius laevigatus
The predatory bug, O. laevigatus, reduced the number of thrips to a greater extent than the predatory mites and all three predators showed greater levels of predation on F. occidentalis than on H. haemorrhoidalis.
A comparison of dietary selection behaviour in larval Locusta migratoria and Spodoptera littoralis
Final instar nymphs of the oligophagous acridid Locusta migratoria and larvae of the polyphagous noctuid Spodoptera littoralis and larvae were fed on one of four artificial diets and total amounts of diet eaten during the conditioning and choice periods are dealt with.
THE FUNCTIONS OF THE MAXILLARY PALPS OF ACRIDIDAE (ORTHOPTERA)
The functions of the maxillary palps of acridids have been investigated and the palp makes small irregular flicking movements and more extensive rapid vibrations described as palpation, which leads to head lowering and to biting if appropriate tactile stimuli are then received.
Electrophysiological responses of the terminal sensilla on the maxillary palps of Locusta migratoria (L.) to some electrolytes and non-electrolytes.
- W. M. Blaney
- BiologyJournal of Experimental Biology
- 1 April 1974
1. Three morphologically and functionally different types of sensilla on the maxillary palp tips of Locusta migratoria are distinguished and an electrophysiological study is made of the most commonly…
Dietary selection Behaviour in Spodoptera Littoralis: The Effects of conditioning Diet and conditioning period on Neural Responsiveness and selection Behaviour
Larvae fed on the diet they first contacted and the probability of stopping the first meal was greater when that diet was P, regardless of the conditioning diet, while those conditioned on the 0 diet lacked both protein and carbohydrate were more responsive to sucrose.
Effect of Clerodane‐Type Diterpenoids Isolated from Salvia spp. on the Feeding Behaviour of Spodoptera littoralis
Eight clerodane-type diterpenoids isolated from species of Salvia growing in Mexico showed potent antifeedant activity in choice and no-choice bioassays and these compounds also stimulated dose-dependent responses from neurones in the lateral styloconic sensilla of S. littoralis.