On kilka fishing status in the Caspian Sea
1993
Razavi, B.
lran's commercial catch on this fish commenced in 1971 and in spite of recent years endeavour to boost the development of kilka fishery, the catch did not exceed 15 thousand tones by year 1991. In this regard a one year survey program conducted in 1991 data collected and stock status identified in Iranian coastline at areas with a seabed depth of 40 to 80 m, in 56 fishing stations spaced at 10 mile intervals along the coast. The survey showed that Clupeonella engruliformis is dominant (91.8 %) followed by Clupeonella grimmi (6.84%) and Clupeonella cultriventris which shared only 1.35% of the total catch. Furthermore 69.95% of Anchovy type kilka, 81.06% of Big eye kilka and 80.88% of common kilka belonged to 2+ and 3+ year class. This major fishing study which carried out in Bandar Anzali using "Catch per Unit Effort" Method, reflects practical variability in fishing and shows that there are more suitable areas with higher densities than Bandar Anzati stations which are yet unexploited. 17 fishing stations from among 56 demonstrate catch rate ranging from 800-1200 kg kilka per unit effort per hour which can h ranked in the first class of kilka yielding grounds, Traditional fishing grounds in Anzali show the catch rate of 400-800 kg per unit effort per hour which is the second class in kilka fishing grounds category. The Iranian coastline bottom topography features sharp slopes which is a favorable habitat for wintering of kilka. The present study shows that possible yearly catch can be promoted up to a ceiling of 100, 1000 metric tons.
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Эту запись предоставил Iranian Fisheries Science Research Institute