BACKGROUND & OBJECTIVES The predatory potential of the larvivorous fishes can be affected by the presence of alternative preys. In the present study the predation pattern of the sewage dwelling Poecilia reticulata (Peters 1872) on the larvae of Culex quinquefasciatus Say 1823 (Diptera: Culicidae) was evaluated in the presence of alternative preys. METHODS The predation of Cx. quinquefasciatus...

Dengue virus spreader Aedes mosquitoes are now present globally in tropical and sub-tropical regions, and spread to more temperate areas during the summer. Mosquitoes Aedes albopictus Skuse and Aedes aegypti (Linnaeus) have adapted to breed around human dwellings and prefer to lay eggs in clean water, and since the virus can be passed from adult to egg, the dengue virus is guaranteed to survive...

in this investigation, the mercury content of different samples of persian gulf shrimp and fish, caspian sea fish and the samples of fish from bandar pahlavi lagoon, zarjoub river near rasht, zayandehroud river near esfahan, and karadj river near tehran were measured by flameless atomic absorption, cold vapor-technique, using standard addition method. the main purpose of this study was to inves...