|
KMID : 0613820020120040407
|
|
Journal of Life Science
2002 Volume.12 No. 4 p.407 ~ p.415
|
|
|
Survival of the early lavae of the Freshwater Crab, Eriocheir japonicus (De Haan) fed on different diets in the Laboratory
|
|
Heo Youn-Seong
Kwon Chin-Soo
Lee Bok-Kyu
Kim Byung-Kee
Choi Joo-Soo
Kim Yang-Woo
|
|
|
Abstract
|
|
|
The survival of the early larvae of the freshwater crab, E. japonicus, fed on different diets at 22±1℃ and 24±1‰ were studied in the laboratory.
The larvae in the control (no feed) lived for 4 days (1～2 zoeal stages), and in the experimental container of non-living foods (egg powder, soy bean powder, pellet powder, millet powder, and mussel meat), they were lived for 7～9 days (2～3 zoeal stages), When the larvae fed on phytoplankton (Chlorella ellipsoid., Skeletonema costatum. and Chaetoceros gracilis), they lived for 10, 18, and 19 days(3～5 zoeal stages), and fed on zooplankton (Artemia nauplii and rotifer), they were reached to the juvenile stage in 24 and 25 days, respectivily.
When the larvae fed on a mixed diets (see table 1). it was more effective than a single food diet, and the most effective diets included Chaetoceros gracilis, Artemia nauplii and rotifera, in which the larvae reached the juvenile stage in 22 days, and the survival was 73%.
|
|
|
KEYWORD
|
|
|
diet, larva, zoea, juvenile, phytoplankton, zooplankton
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|