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Phenolic Compounds on the Pod-Surface of Pigeonpea, Cajanus cajan, Mediate Feeding Behavior of Helicoverpa armigera Larvae
TLDR
A methanol extract of the pod surfaces of Cajanus cajan, a feeding stimulant for fifth-instar Helicoverpa armigera, was shown to contain four main phenolic compounds, and an absence of quercetin and higher concentrations of isoquercitrin than the cultivated variety characterized pod surface extracts of pod-borer-resistant cultivars.
Does the size of larval groups influence the effect of metabolic inhibitors on the development of Phormia regina (Diptera: Calliphoridae) larvae ?
TLDR
In general, larvae reared in groups were less susceptible to the toxic effects resulting from diet- borne metabolic inhibitors, and the chemical factors that result from the feeding activity of saprophagous dipterans were discussed.
Diet nutriment and rearing density affect the growth of black blowfly larvae, Phormia regina (Diptera: Calliphoridae)
TLDR
Larvae of Phormia regina (Meigen) (Diptera: Calliphoridae) were reared, in isolation, upon either lamb's liver or meridic diets that varied in protein- and carbohydrate-content, which resulted in an extended larval period and increased mortality and reduced pupal weights.
Toumeyella parvicornis (Hemiptera: Coccidae), Causing Severe Decline of Pinus caribaea var. Bahamensis in the Turks and Caicos Islands
TLDR
The entire Caribbean pine population in the TCI is under immediate threat from this invasive pest, with potentially devastating effects on the pineyard ecosystem.
Behavioural and neurophysiological responses of Spodoptera littoralis to azadirachtin and a range of synthetic analogues
TLDR
None of the analogues was as active as azadirachtin, although many showed significant antifeedant activity at high concentrations, and the majority of the Analogues stimulated a dose‐dependent response from a neurone in the medial styloconic maxillary sensilla which correlated with the behavioural activity.
Toxicity and behavioural effects of diet‐borne alkaloids on larvae of the black blowfly, Phormia regina
TLDR
Larvae of the black blowfly were exposed for 24 h to artificial diets that contained one of the following alkaloids: arecoline, caffeine, nicotine, quinine, sparteine or strychnine at either 1000 or 100 p.p.m, which caused reduced weight gain and reduced larval weights in a choice bioassay.
Novel Agmatine Derivatives in Maerua edulis With Bioactivity Against Callosobruchus maculatus, a Cosmopolitan Storage Insect Pest
TLDR
Two novel plant chemical structures are identified, the E and Z isomers of cinnamoyl-4-aminobutylguanidine along with theE and ZIsomers of 4-hydroxycinnamoysl- 4-aminabutylGUanidine in the leaves of M. edulis and stachydrine showed similar activity to the crude extracts suggesting that these compounds explained the activity of the extract.
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