The alfalfa weevil Hypera postica (Gyllenhal) (Coleoptera: Curculionidae) is a major pest of worldwide. In Spain, insecticide sprayings are mainly used for control with low efficacy. As potential more sustainable method, we determined the effectiveness an winter cutting reducing populations in spring and its interaction parasitism rate due to Bathyplectes spp. (Hymenoptera: Ichneumonidae). Fort...

telenomus beneficiens is a common egg parasitoid of sugarcane top borer scirpophaga excerptalis; however, in winter time the incidence of the parasitoid on top borer eggs is extremely low. t. beneficiens adults were released at various time durations into sugarcane plots to evaluate the parasitic potentiality of the parasitoid against sugarcane top-borer. the egg parasitoid t. beneficiens of su...

background: the aim of this study was to determine the prevalence, intensity, and species of internal and external parasites of native fowls from golestan province, north of iran. methods: during 2007, different organs of 26 and 24  adult female native fowls  collected   from hu­mid parts (gorgan, kord kooy, ramian and bandar gaz) and dry regions  (gonbad kavoos, and ban­dar torkaman) of golest...

A total of 3456 faecal samples of equines brought to the mobile clinic of the department of clinical medicine and surgery, University of Agriculture, Faisalabad, screened for gastrointestinal tract (GIT) parasitism using standard protocols. Information regarding possible risk factors was also collected with clinical observations on a predesigned questionnaire. A total of 45.1% (1562/3456) equin...

Many songbird species have experienced significant population declines, partly because of brood parasitism by the Brown-headed Cowbird (Molothrus ater), which is positively associated with increasing landscape forest cover in the midwestern United States. However, cowbirds are also experiencing long-term population declines, which should reduce parasitism pressure and thus increase productivity...

Univoltine Aedes mosquito larvae infected lsy Romanonterrnrs sp. were found at 2 localities in Yellowstone National Park, Wyoming. Aedes neuad.ensis, Ae. impiger, Ae. pullntus and Ae. punctor were the predominant host species. Only Ae. neuadensis was common to all sites. Rates of parasitism rangedfrom 55 to 93Vo and differed significantly between localities. Significant annual variation in the ...

ladybird hippodamia variegata (goeze) (coleoptera: coccinellidae) has been reported from many parts of iran, has an important factor on equilibrium and natural regulation of acyrthosiphon pisum (harris) (hem.: aphididae) population in alfalfa. determining the population seasonal change of h. variegata and its parasitism rate by the most important parasitoid species was the aim of this study. th...

In this study, the performance of an irreversible regenerative Brayton cycle is sought through power maximizations using finite-time thermodynamic concept in finite-size components. Optimizations are performed using a genetic algorithm. In order to take into account the finite-time and finite-size concepts in the current problem, a dimensionless mass-flow rate parameter is used to deploy ti...

Lygus lineolaris is a pest of many economically important crops. While the species comprising the Peristenus pallipes complex are native parasitoids of L. lineolaris, they do not provide adequate biological control of L. lineolaris. As a result, the European parasitoid, Peristenus digoneutis, was introduced in forage alfalfa. Peristenus digoneutis successfully dispersed from forage alfalfa to s...