recently the previous caspian ecosystem is in a catastrophic condition which caused changes in the absolute and relative abundance of the commercially important caspian kutum (rutilus frisii kutum) in iranian waters. the paper presents estimates of yield-per-recruit and spawning biomass-per-recruit under various harvest strategies of fmax, f0.1, f30%. it proposes a method for estimating accepta...

pomegranate fruit moth (pfm), apomyelois ceratoniae zeller is a major pest of pomegranate in iran. in this study, the effect of four diets including pistachio, pomegranate, semi-artificial and artificial diets were studied on biological parameters of pfm in a growth chamber under controlled conditions at 30 ± 2 °c, 65 ± 5% rh and 16:8 (l: d) h. the results demonstrated that the longest incubati...

The transformation of the system for distributing quotas extraction aquatic biological resources (ABR) in Russia affects interests many parties. new allocation rights to catch ABR, which provides investment, changes established order fisheries, caused discussions industry. Innovations reduced level monopolization industrial fishing, development shipbuilding and ABR processing Russia’s territory. ...

One of the most exciting discoveries in biological adhesion is the recent and counter-intuitive observation that the lifetimes of some biological adhesive bonds, called catch bonds, are enhanced by tensile mechanical force. At least two types of adhesive proteins have been shown to form catch bonds--blood proteins called selectins and a bacterial protein called FimH. Both mediate shear-enhanced...

There have been recent changes in the Caspian Sea ecosystem, such as those due to changes in sea level or those caused by the invasive ctenophore, Mnemiopsis leidyi. It is believed that these changes had significant impacts on the absolute and relative abundance of the commercially important anchovy kilka (Clupeonella engrauliformis) and common kilka (C. cultriventris caspia) leading to decline...