NDLI: Effect of culture methods on individual variation in the growth of sea cucumber Apostichopus japonicus within a cohort and family

Content Provider	Springer Nature Link
Author	Qiu, Tianlong Zhang, Libin Zhang, Tao Bai, Yucen Yang, Hongsheng
Copyright Year	2014
Abstract	There is substantial individual variation in the growth rates of sea cucumber Apostichopus japonicus individuals. This necessitates additional work to grade the seed stock and lengthens the production period. We evaluated the influence of three culture methods (free-mixed, isolated-mixed, isolated-alone) on individual variation in growth and assessed the relationship between feeding, energy conversion efficiency, and individual growth variation in individually cultured sea cucumbers. Of the different culture methods, animals grew best when reared in the isolated-mixed treatment (i.e., size classes were held separately), though there was no difference in individual variation in growth between rearing treatment groups. The individual variation in growth was primarily attributed to genetic factors. The difference in food conversion efficiency caused by genetic differences among individuals was thought to be the origin of the variance. The level of individual growth variation may be altered by interactions among individuals and environmental heterogeneity. Our results suggest that, in addition to traditional seed grading, design of a new kind of substrate that changes the spatial distribution of sea cucumbers would effectively enhance growth and reduce individual variation in growth of sea cucumbers in culture.
Starting Page	737
Ending Page	742
Page Count	6
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	32
Issue Number	4
e-ISSN	19935005
Language	English
Publisher	Science Press
Publisher Date	2014-07-11
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	Apostichopus japonicas individual growth variation culture methods family sea cucumber Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

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