The identification and risk assessment of potential biological invaders would provide valuable criteria for the allocation of resources toward the detection and control of invasion threats. Yet, freshwater biologists have made few attempts at predicting potential invaders, apparently because such efforts are perceived to be costly and futile. We describe some simple, low-cost empirical approach...

Golestan province is located in north of Iran, in the south east of Caspian Sea. Stomach cancer data were identified and collected through the 18 Pathology Laboratory centers, where male populations are referred. Using a structured questionnaire, trained personnel conducted in-person interviews to collect information on stomach cancer. Newly diagnosed cases which were detected by histologic or ...

The paper presents the first record of the Ponto-Caspian amphipod crustacean Pontogammarus robustoides G.O. Sars, 1894, in the Gulf of Riga, Baltic Sea. Eight individuals of this invasive amphipod were found in June 2009, in shallow waters of the gulf near Yurmala city. Most likely this species entered the Gulf of Riga from Latvian rivers emptying into the Baltic Sea, where it was previously fo...