Bioassays were conducted to document the effects of Metarhizium anisopliae infection on adult female Asian longhorned beetle (Anoplophora glabripennis) reproduction before death and subsequent survival of offspring. The effect of infection on fecundity was evaluated for females already laying eggs and for newly eclosed females using M. anisopliae isolates ARSEF 7234 and 7711, respectively. Decr...

Aqueous extract of Indigofera suffruticosa leaves obtained by infusion was used to evaluate the oviposition, its effect on development of eggs and larvae, and morphological changes in larvae of Aedes aegypti. The bioassays were carried out with aqueous extract in different concentrations on eggs, larvae, and female mosquitoes, and the morphological changes were observed in midgut of larvae. The...

To the Editor: In the past 20 years, Baylisascaris procyonis, the common intestinal roundworm of raccoons, has increasingly been recognized as a source of severe human neurologic disease that particularly affects children (1,2). Although human baylisascariasis appears to be rare, the devastating neurologic disease caused by this infection and the lack of effective treatment make it a disease of...

laboratory and field experiments were conducted to determine the efficacy of some insecticides on the control of sarta longhorned beetle, aeolesthes sarta solsky adults and larvae. in the laboratory, three pairs of mated and non-oviposited adults were released on the logs of field elm, ulmus minor mill that had been treated with chlorpyrifos, carbaryl, permethrin or imidacloprid. in the field e...

A choice test revealed that Hessian fly, Mayetiola destructor (Say) (Diptera: Cecidomyiidae), adults deposited approximately 3 times more eggs on wheat (Triticum spp.), seedlings than on barley (Hordeum spp.) or rice, Oryza sativa L., seedlings. On a barley seedling, 49.4% of eggs were deposited on either the abaxial leaf surface or the coleoptile and first leaf sheath (C&FLS), where newly hatc...

In an experimental laboratory investigation on an estuarine crab, Chasmagnathus granulata Dana, we investigated how salinities experienced during embryonic and larval development (embryonic and larval salinity exposures, respectively) and intraspecific variability of initial biomass at egg laying and hatching affected larval performance. The latter was measured in terms of survival rate, durati...

The magnitude of oviposition as well as the size, shape and the number of eggs per of egg rafts egg raft were determined after gravid Culex quinquefasciatus Say oviposited on water treated with water dispersible granules (WDG) of Bacillus thuringiensis ssp. israelensis (Bti) and on untreated water. The mean number of eggs/raft was lower in the treated than in the untreated water. Bti concentrat...

Abstract Background & Aims: Toxocariasis or visceral larva migrans syndrome is a disease that appears by attack of extra intestinal animal nematode larvae of Toxocara canis to the human tissues. The present study was performed to evaluate the frequency of Toxocara eggs in public parks of Shiraz /Iran. Methods: A total of 20 parks from different regions of shiraz city were selected, and from dif...

T h e infectivity of second-stage larvae of Meloidogyne spp. is a function of soil temperature, aeration, moisture, texture, and density, as well as a funct ion of the distance the second-stage larvae have to travel pr ior to root penetra t ion (3, 4). Because eggs may require up to 2 weeks to hatch under greenhouse conditions, infection periods with larvae are normal ly shorter than those with...

The possibility of vertical transmission of Borrelia burgdorferi sensu lato in Ixodes persulcatus Schulze, 1930 ticks was studied in the progeny of 20 females collected from the vegetation in an active focus of ixodid tick-borne borrelioses (ITBB) located in the Perm oblast, Russia, where Borrelia garinii and B. afzelii are circulating. The presence of Borrelia DNA was detected by the PCR metho...