- Volume 37 Issue 4
In order to investigate the influence of sea condition on the catch fluctuation of long line for common octopus, octopus variabilis, the oceanographic factors, i. e., the wind direction, the wind speed, the age of moon and ebb tide and flood tide in the coastal waters of Yosu from Jan. 11 to Jul. 25 in 1997, and compared with the catches of common octopus, octopus variabilis, by long line. The results obtained summerized as follows; 1) The catch of common octopus was highest in wind direction from SE and lowest in that from NW. The catch was highest at the wind speed of 2m/sec and decreased with increasing speed, over 2m/sec. 2) The catch of common octopus was highest at the day of neap tide and lowest at the mid day, from neap tide to spring tide. More strictly the catch was higher during days at which the current became rapid than during days at which the current became slow. The catch was higher always at flood tide than at ebb tide in all the days investigated and highest with in one hour from ebb tide.
- 農水産統計年譜 水産廳
- 淺海養殖 60種 伊丹廣三
- 日水誌 v.29 no.6 マダユ稚子の飼育について 伊丹廣三
- Physical Oceanography John, A. K.
- 漁具學 金大安
- 淺海增殖學 田村 正
- J. Exp. Bidl. v.34 no.1 The function of the the brain of octopus intactile discrimination Well, M. J.;Well, J.