ABSTRACT- Several species of aphids cause severe damage to citrus in the north of Iran. Predatory insects play an important role in biological control of the pests in citrus orchards. In this study, potential predatory insects of citrus aphids, Aphis spiraecola, A. gossypii and Toxoptera aurantii, were identified and their seasonal population dynamics...

Insects are one of the most successful animal groups on earth. Some insects, such as the silkworm and honeybee, are beneficial to humans, whereas others are notorious pests of crops. At present, the genomes of 38 insects have been sequenced and made publically available. In addition, the transcriptomes of dozens of insects have been sequenced. As gene data rapidly accumulate, constructing the p...

b a ckground: aquatic insects are the  major groups of arthropods that spend  some parts of their life cycle in the water. these insects play an important role for transmission of some human and animal diseases. there is few information about the aquatic insects fauna of iran. m e t hods: to study the aquatic insects fauna, adult, nymphal and larval collections were carried out from different h...

BACKGROUND A large number of dry-preserved insect specimens exist in collections around the world that might be useful for genetic analyses. However, until now, the recovery of nucleic acids from such specimens has involved at least the partial destruction of the specimen. This is clearly undesirable when dealing with rare species or otherwise important specimens, such as type specimens. METH...

Abstract Injection of siRNA (small interfering RNA) into parthenogenetic adult pea aphids (Acyrthosiphon pisum) is shown here to lead to depletion of a target salivary gland transcript. The siRNA was generated from double stranded RNA that covered most of the open reading frame of the transcript, which we have called Coo2. The Coo2 transcript level decreases dramatically over a 3-day period aft...

Organisms in the aerosphere have been detected by radar since its development in the 1940s. The national network of Doppler weather radars (WSR-88D) in the United States can readily detect birds, bats, and insects aloft. Level-II data from the radar contain information on the reflectivity and radial velocity of targets and on width of the spectrum (SD of radial velocities in a radar pulse volum...

Insects fed to captive insectivores are deficient in calcium with inverse calcium to phosphorous ratios (Ca:P), and supplementation is required to avoid nutritional metabolic bone disease (NMBD). One method of improving the nutritional value of feeder insects is by “dusting” with powdered supplements, although it is often suggested that these are rapidly shed from prey insects. Here we analysed...

Sommario In this paper we describe a model of cooperation in Evolutionary Robotics (ER) derived by animal research on Corvids. In recent years many researchers have proposed models of ER which are bioinspired. The main source of inspiration has come from social insects, such as ants. Inspiration may come also from other representatives in the animal kingdom, that are quite different from insect...