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The pistachio fruit hull borer, Arimania comaroffi (Ragonot) (Lepidoptera: Pyralidae), is a key pest of pistachio orchards in Iran. This pest passes the winter as diapausing pupae. In this study, some physiological changes in relation to environmental temperature were investigated in field collected pupae. The relationship between supercooling point, cold(More)
In this project, the toxicity and mechanism of action of the ricin-B-related lectin SNA-I from elderberry (Sambucus nigra) in the pea aphid (Acyrthosiphon pisum) and the beet armyworm (Spodoptera exigua), two important pest insects in agriculture, were studied. SNA-I is a chimeric lectin belonging to the class of ribosome-inactivating proteins and consists(More)
The common pistachio psylla, Agonoscena pistaciae Burckhardt & Lauterer (Hemiptera: Psyllidae), is known as the key pest of pistachio orchards in Iran. This pest passes the winter as adults. In this study, energy allocation changes in relation to ambient temperature were investigated in field-collected adults by measuring total body sugar, trehalose,(More)
The tachykinin-related peptides (TRPs) are multifunctional neuropeptides found in a variety of arthropod species, including the pea aphid Acyrthosiphon pisum (Hemiptera: Aphidae). Two new biostable TRP analogs containing multiple, sterically hindered Aib residues were synthesized and found to exhibit significantly enhanced resistance to hydrolysis by(More)
Environmental risks associated with the use of non-indigenous organisms for augmentative biological control have received growing attention. In Europe, the native pentatomid predator Picromerus bidens (Linnaeus) has been considered a potential alternative to the North American pentatomid Podisus maculiventris (Say) for the control of lepidopteran,(More)
The five biological parameters of sweetpotato whitefly, Bemisia tabaci (Genn.) and silverleaf whitefly Bemisia argentifolii Bellows and Perring (Hom: Aleyrodidae) as an important pest of cotton were compared on cotton in laboratory condition. The infested leaves containing nymphs and pupae were collected from cotton fields in Iran. Experiments were(More)
The insect kinins are multifunctional neuropeptides found in a variety of arthropod species, including the pea aphid Acyrthosiphon pisum (Hemiptera: Aphidae). A series of biostable insect kinin analogs based on the shared C-terminal pentapeptide core region were fed in solutions of artificial diet to the pea aphid over a period of 3 days and evaluated for(More)
Insufficient pollination results in less yield and low quality of crops. Many vegetables depend on the cross pollination to produce valuable seeds or fruits. Most flowering plants, fruit and seed formation are highly dependent on the activity of pollinator bees and in some crop such as alfalfa no seeds will form in the absence of bees. The most important(More)
The sweetpotato whitefly, Bernisia tabaci (Genn.) (Hom: Aleyrodidae) is a major pest of field crops, vegetables and ornamentals in Iran. In this study, the infested leaves of cucumber (Cucurnis sativus L.) zucchini (Cucurbita pepo L.) eggplant (Solanum melongena L.) and cotton (Gossypium hirsutum L.) with whitefly nymphs and pupae were collected from Iran,(More)