osmerus mordax การใช้

• The fish was competition with the introduced rainbow smelt, " Osmerus mordax ".
• The introduced alewife ( " Alosa pseudoharengus " ) and rainbow smelt ( " Osmerus mordax " ) are also aggressive predators of juveniles.
• The pygmy smelt coexists with the rainbow smelt " Osmerus mordax ", and is distinguished from it by slower growth, earlier maturation, shorter life span, later spawning time, and use of smaller food items.
• The "'rainbow smelt "'( " Osmerus mordax " ) is a species of fish of the L . sicilis " ), and other small organisms, but are aggressive and will eat almost any fish they find.
• The reduced abundance is believed to result from the cumulative effects of several factors, including the expansion of non-native species such as alewife, rainbow smelt ( " Osmerus mordax " ) and sea lamprey ( " Petromyzon marinus " ).
• Parasitic sea lamprey ( " Petromyzon marinus ", alewife ( " Alosa pseudoharengus " ) and rainbow smelt ( " Osmerus mordax " ), in particular, have been implicated in their demise, and are believed to have stressed populations to the extent that previously sustainable levels of exploitation became unsustainable.