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http://dx.doi.org/10.3796/KSFT.2015.51.1.001

Growth and mortality of the juvenile common octopus (Octopus vulgaris) in pipe- and tire-type shelters placed in flow-through seawater tanks  

Kwon, Inyeong (Department of Fisheries Science, Graduate School, Chonnam National University)
Kim, Taeho (Division of Marine Technology, Chonnam National University)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.51, no.1, 2015 , pp. 1-8 More about this Journal
Abstract
The common octopus, which has a high growth rate and high market price, is a prime candidate for commercial marine aquaculture operations. We evaluated the effectiveness of two types of shelters (pipe and tire types) for juvenile common octopus growing out in flow-through seawater tanks. Growth rates were evaluated in two experiments. The first experiment (Experiment 1) ran for 72 days, and the second (Experiment 2; replicated) ran for 46 days. Each trial included 40 octopuses fed a diet of frozen sardine (Sardinops melanostictus) and swimming crab (Portunustri tuberculatus) at 3-8% of body weight once every 3 days. In the two experiments, the respective specific growth rates were 0.3 and 0.04%/day in pipe-type shelters and 0.00 and 0.88%/day in tire-type shelters, while the respective percentage survivals were 80 and 80% in pipe-type shelters and 70 and 90% in tire-type shelters. Shelter type had little influence on the growth rate (P < 0.05).
Keywords
Octopus; Pipe shelter; Tire shelter; Rearing system; Flow-through seawater tank;
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