Effect of Alien species on assemblage fishsin Shatt Al-Arab river and East Al-Hammar Marsh

Abstract

The present study was choose two zones the first called Sinbad in the Shatt al-Arab river and the second zone called Al-Salal in Al-Hammar marsh the period from April 2013 until March 2014. 13 were studied environmental factor in both regions. Record of 12 species of alien species and has been record 9 and 11 individual fishing in Shatt Al-Arab river and Al-Hammar marsh respectively. was record 3091 and 16988 individual in the Shatt al-Arab river and Al-Hammar marsh respectively. While catch 4858 and 62614 individual from total number of fish catch in the Shatt al-Arab and Al-Hammar marsh respectively, while the total number of fish catch was 6747 fish also formed three species of 89.83% of the total number of alien species, While were recorded 7 species sensitive endemic in two stations and record 5 species were present species tolerant. has also been fishing 38 species in the present study,while the highest values (2.12) of diversity index (H) was obtained in December and the lowest (0.86) in October. the results showed statistical analysis using (F.test) the existence of significant differences under the level (P> 0.05) between the two station.