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פותח על ידי קלירמאש פתרונות בע"מ -
Ration and spatial distribution of feed affect survival, growth, and competition in juvenile red-claw crayfish, Cherax quadricarinatus, reared in the laboratory
Year:
1997
Source of publication :
Aquaculture (source)
Authors :
ברקי, אסף
;
.
לוי, טל
;
.
קרפלוס, אילן
;
.
שרם, איילה
;
.
Volume :
148
Co-Authors:
Barki, A., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Levi, T., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Shrem, A., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Karplus, I., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
169
To page:
177
(
Total pages:
9
)
Abstract:
The effect of ration and spatial distribution of feed on survival, growth, and competition was studied in juvenile red-claw crayfish in the laboratory. Groups of 60 juveniles were raised for 27 days in each combination of ration and spatial distribution: feed being provided once a day or once in 4 days, spatially dispersed or clumped. Aggressive interactions among juveniles were recorded on the 12th day, both prior to and following feed administration. The final weight was much higher when the crayfish were fed once a day compared with once in 4 days, but the respective survival was lower. The latter was explained by increased cannibalism due to higher moulting frequency. The effect of spatial distribution of feed on growth and survival was marginal. However, this factor affected competition for feed. This was revealed by the sharp increase in frequency of aggressive interactions following feed insertion, observed only in the groups where the feed was clumped. Ration bad no influence on competition. The weak association between feed competition and both survival and growth is discussed.
Note:
Related Files :
Cheras quadricarinatus
Cherax quadricarinatus
Crayfish
Decapoda
Food-competition
Food competition
Growth
red-claw crayfish
survival
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/S0044-8486(96)01418-4
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
19142
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:26
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Scientific Publication
Ration and spatial distribution of feed affect survival, growth, and competition in juvenile red-claw crayfish, Cherax quadricarinatus, reared in the laboratory
148
Barki, A., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Levi, T., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Shrem, A., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Karplus, I., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Ration and spatial distribution of feed affect survival, growth, and competition in juvenile red-claw crayfish, Cherax quadricarinatus, reared in the laboratory
The effect of ration and spatial distribution of feed on survival, growth, and competition was studied in juvenile red-claw crayfish in the laboratory. Groups of 60 juveniles were raised for 27 days in each combination of ration and spatial distribution: feed being provided once a day or once in 4 days, spatially dispersed or clumped. Aggressive interactions among juveniles were recorded on the 12th day, both prior to and following feed administration. The final weight was much higher when the crayfish were fed once a day compared with once in 4 days, but the respective survival was lower. The latter was explained by increased cannibalism due to higher moulting frequency. The effect of spatial distribution of feed on growth and survival was marginal. However, this factor affected competition for feed. This was revealed by the sharp increase in frequency of aggressive interactions following feed insertion, observed only in the groups where the feed was clumped. Ration bad no influence on competition. The weak association between feed competition and both survival and growth is discussed.
Scientific Publication
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