American Journal of Innovative Research & Applied Sciences
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This article is made freely available as part of this journal's Open Access.
Authors Copyright © 2015: | Adib Saad and Waad Sabour | Gaby Khalaf | and | Milad Fakhri |
| ABSTRACT | Volume 1, Issue 4, Pages 123-127 (June 2015)
Research article
NEGATIVE IMPACT OF INVASIVE INDO- PACIFIC   BLUESPOTTED CORNET FISH ON THE  BIODIVERSITY AND NATIVES FISH STOCKS IN THE SYRIAN AND LEBANESE MARINE WATERS (EASTERN MEDITERRANEAN)
 | Adib Saad | Waad Sabour | Gaby Khalaf | and | Milad Fakhri |. American Journal of Innovative Research and Applied Sciences. 2015; 1(4):123-127.
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Instituation affiliation:

1. Laboratory of Marine Science | Faculty of Agriculture | Tishreen University | Lattakia | Syria |

2. Zoology Department | Faculty of Sciences | Tishreen University | Lattakia | Syria |

3. National Center for Marine Sciences-CNRSL | Batroun 534 | Lebanon |
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American Journal of innovative
       Research & Applied Sciences 
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ABSTRACT

  Background: Syria a, just like Lebanon and  the neighboring countries, is one of the most influenced countries by the invasive alien species due to its proximity to the Suez Canal and the dense maritime traffic along  
its coastline. Invasive species, in fact, may alter the evolutionary pathway of native species by competitive exclusion, niche displacement, predation and other ecological and genetic mechanisms. The bluespotted  
cornet fish Fistularia Commersonii (Ruppel,1838) may contribute to increase this alternation, because it is one of the most abundant and dominant Indo-Pacific alien fishes along the Levantine basin of the Mediterranean  
Sea at the onset of the past decade. Objective: In order to know the extent and mechanism of the negative impact of this exotic species on the  diversity and the natural stock of  native species and her environment, it  
has been the study of the reproductive cycle and diet of bluespotted cornet fish. Methods: The study was performed in the coastal area of Lebanon and Syria along 380 (approximately). A total of 460 specimens of  
Bluespotted cornet fish were collected by beach seine and trammel net at depth of 2-20 m from October 2012 to September 2013. Results: The results of this work were shown a rapid development among the  
ichtyofauna in the Eastern Mediterranean. Fistularia commersonii spawned in the Syrian and Lebanese coast from the second half of May until early August, with greatest intensity in June. Fecundity ranged between  
355-697 eggs/g /ovary. This species  It is carnivorous, and feed on many small fish species, such as Sardinella spp., Sprarus spratus, Alosa fallax, Boops bops .etc. 12-30 individual preys was  found  in the stomach  of   
every specimen). Conclusion: The high fecundity rate, the long period of reproduction, and its rapidly expanding population feeding on fish, make a decline of the biomass and causing damage and loss to fisheries yield  
and perturbed the marine biodiversity.

Keys words: Invasive fish, Fistularia, reproductive cycle, feedinghabitat, Syrian coast, marine environment