Diurnal changes of dissolved oxygen content in the inside and the outside of the fish net cage
1991
Sakaguchi, H.(Ehime-ken. Fisheries Experimental Station, Uwajima (Japan)) | Tatsukawa, K.
Diurnal changes of dissolved oxygen content were investigated at the yellowtail and red sea bream fish net cage of Ehime Prefectural Fisheries Experimental Station on September 1989. Patterns of diurnal changes in dissolved oxygen content at the depth of 2m and those of 4m were similar during the daytime, but were different at night. Dissolved oxygen content at the depth of 2m and that of 4m sometimes increased transitionally at night. Dissolved oxygen content at the red sea bream fish net cage was less than that at the yellowtail fish net cage before feeding; and the latter was less than the former after feeding. These results suggest that stratification of density, exchange of sea water in the fish net cage and also the amount of food for fish had influence on dissolved oxygen content.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Agriculture, Forestry and Fisheries Research Information Technology Center