open access

https://hdl.handle.net/2115/35532

Relationship between food consumption and growth of adult walleye pollock theragra chalcogramma in captivity

日本語

1984

日本水産学会

Bulletin of the Japanese Society of Scientific Fisheries

50(5)

763-769

Food consumption rate and growth rate of the adult walleye pollock were measured at different temperatures (2-7, 4-10 and 9-15°C), body sizes (33-35, 35-39 and 39-45cm) and foods (juvenile walleye pollock, squid and sandlance). 1. The amount of daily intake indicated peaks at intervals of 5 days. 2. The efficiency of assimilation was almost constant for range of temperature and body size, and for each food item adapted in these experiments. However, the efficiency of dissimilation increased with the increase in temperature. 3. An empirical linear equation was established on the relationship between daily feeding rate (R) and daily growth rate (G) at 2-7°C: G=0.3370R-0.225. 4. Body weight and condition factor increased linearly with increase of ration, but body length increased asymptotically. 5. Estimated food requirements of adult walleye pollock was 1.1% of body weight per day.

学術雑誌論文

Version of Record

© 1984 The Japanese Society of Fisheries Science

0021-5392

1349-998X

AN00193422