In this study a parasitological investigation on 238 samples of Neogobius species from the south-east of Caspian Sea was carried out. The samples including Neogobius melanostomus (35), N. fluviatilis pallasi (103), N. kessleri gorlap (70) and N. bathybius (30) were seasonally seined by beach net during one year (summer 2006-spring 2007), fixed in 10 % buffer formalinand transferred to the labor...

This paper uses a methodology based in fuzzy sets theory in order to describe the interaction between the prey, Aphis glycines (Hemiptera: Aphididae) the soybean aphid, and its predator, Orius insidiosus (Hemiptera: Anthocoridae). Economic thresholds were already developed for this pest. The aim of this investigation was to develop a simple and specific methodology by fuzzy rule-based system to...

Abstract A total of 958 specimens farmed common carp Cyprinus carpio from eight the most significant and largest cyprinid aquaculture facilities in Macedonia (pond cage culture systems) were examined for parasitological investigation three years. The following parasite species genus Dactylogyrus identified: extensus, minutus anchoratus . highest prevalence was determined D. extensus (38.8%), fo...

Abstract Augmentative biological control in protected crops relies mainly on omnivorous predators. Their performance as agents (BCA) depends several characteristics of the species, which turn may differ among strains within a species. We have recently reported achievement two Orius laevigatus (Hemiptera: Anthocoridae) showing significant larger body size or better fitness when feeding pollen, h...

The western flower thrips, Frankliniella occidentalis (Pergande) attacks a large number of crop plants. The current insecticides have caused resistance in insects and have caused outbreaks of thrips. In many instances, alternative methods of insect management and natural products, offer adequate pest control and pose fewer hazards. Several species of minute pirate bugs of the genus Orius play a...