A study on benthic fauna of Delvar shrimp farms and its relationship with its shrimp production
Subject Areas : New Technologies in Aquaculture Development
Keywords: Keywords: Macrofauna, Microfauna, Delvar site, Shrimp breeding, Sediments aggregation,
Abstract :
Abstract This study was conducted in the Delvar Aquaculture complex during February 2009 to December 2010. The microphones and microphones of 6 pounds in 2 farms were counted and identified, monthly. The environmental factors, salinity, dissolved oxygen and climatic conditions were recorded. Results were showed, polychaeta, gastropoda and bivalva (macrofauna) were dominant and the most frequency of mayofauna was in June and July. Pond bottom organic matter (TOM) was minimum in June and maximum in September, respectively. The extent of sediment aggregation was from. 5 mm to less than 63 mm and the percentage of particles smaller than. 63 mm formed 75-90% of pond sediments during second half period of shrimp culture. The average production rate and the average food consumption in1.2 hectares of farm 2 was more at about 2812.8 kg in the area of 1.2, and also the average food consumption in this farm in the area of 1.2 hectare has been 5688.2 kg more than farm 1; and there was a significant difference between 2 farms in the average production rate and food consumption rate.
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