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Articles by Ibrahim Okumus
Total Records ( 2 ) for Ibrahim Okumus
  Goktug Dalgic , Sedat Karayucel and Ibrahim Okumus
  The gametogenetic cycle of striped venus Chamelea gallina of southern Black Sea population was studied using standard histological technique and a condition index. There was a synchronism between sexes in terms of gametogenetic development. The beginning phase occurs during spring (March-May) and maturation occurs during Summer (June). Most of the spacemen spawn in July. The gonadal stages were consisted of five phases including primordial, development, mature, spawn and resting. Results obtained in this study fit with seasonal restrictions of C. gallina fishery in the Black Sea.
  Sebnem Atasaral Sahin , Ahmet Sahin and Ibrahim Okumus
  Timing and density of spat settlement on artificial collectors Polypropylene (PP) and hemp with growth and culture potential of Mediterranean mussel, Mytilus galloprovincialis were studied at two sites (Trabzon-Sana and Rize) in the Southeastern Black sea coast. The growth of the mussels and environmental parameters were measured monthly from May 2003 to April 2004. Two different spat collectors (PP and hemp) hung on long-line mussel systems in April 2003. First observation of spat settlement at each sites was started in May. Mean value of spat settlement was determined as 7659±1495 mussels/m in Sana and 5774±1438 mussels/m in Rize. There was no significant difference found between spat collector ropes. Mean value of spat length was determined as 0.07±0.003 mm in Sana, 0.09±0.004 mm in Rize. At the end of the study, shell length of mussels reached 40.39±1.184 mm in Sana and 46.20±0.547 mm in Rize. In conclusion for mussel culture enough seed can be collected but spats must be stripped in 1 or 2 months after settlement and that mussels would be market size in 1+ years.
 
 
 
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