in order to study the distribution of argasidae family ticks and the role of o.tholozani in transmitting the relapsing fever agent in rural areas of central province, an investigation was carried out from june to november 1992. in this study, 3371 specimens from 70 villages were collected by simple sampling method technique and subsequently were identified in laboratory. the results showed that...

in order to improve the knowledge of the caelifera species of north eastern iran, faunistic investigations on grasshoppers of this region were carried out during 2013-2014. collected specimens as well as deposited specimens in insect museum of ferdowsi university of mashhad were examined, in detail. totally 19 species belonging to 17 genera, 9 subfamilies and 3 families were collected and deter...

Urbanization can considerably affect water reservoirs by, inter alia, input, and accumulation of contaminants including metals. Located in the course of River Cybina, Maltański Reservoir (Western Poland) is an artificial shallow water body built for recreation and sport purposes which undergoes restoration treatment (drainage) every 4 years. In the present study, we demonstrate an accumulation ...

Several bivalve species produce byssus threads to provide attachment to substrates, with mechanical properties highly variable among species. Here, we examined the distal section of byssal threads produced by a range of bivalve species (Mytilus edulis, Mytilus trossulus, Mytilus galloprovincialis, Mytilus californianus, Pinna nobilis, Perna perna, Xenostrobus securis, Brachidontes solisianus an...

in this study the genetic diversity of wild caspian trout (salmo trutta caspius) in the sardabroud and astara rivers was evaluated using d- loop region sequencing. for this purpose, 35 specimens of adult caspian brown trout were collected from these rivers in the mazandarn and gilan provinces in fall and winter 2011. approximately 3-5 g of soft and fresh fin tissue was isolated and fixed in eth...

during a survey on stigmaeid mites in northwestern iran (2004-2006), several specimens of the family stigmaeidae were collected on olive trees in moghan (ardebil province) in july 2006. these mites were later identified as agistemus collyerae gonzalez-rodriguez. this is the first record of this species from iran. the specimens were collected along with the specimens of the family eriophyidae on...

Mytella guyanensis, consumed and commercialized in coastal regions of Brazil, is one of several bivalve species of socioeconomic interest for coastal communities. Besides serving as a source of income and subsistence for these communities, it also contributes to their food security as it is a source of proteins and micronutrients. Thus, the reproductive cycle of this species was studied aiming ...