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Stable isotope ratios as naturally occurring tracers in the aquaculture food web
Year:
1983
Source of publication :
aquaculture (source)
Authors :
Schroeder, Gerald L.
;
.
Volume :
30
Co-Authors:
Schroeder, G.L., Institute of Animal Sciences, Agricultural Research Organization: The Volcani Center, P.O.B. 6, Beit Dagan, Israel
Facilitators :
From page:
203
To page:
210
(
Total pages:
8
)
Abstract:
The natural isotopic ratio of 13C12C (reported as δ C) in plant matter varies predictably among plant types. The isotopic ratio of an animal body reflects the isotopic ratio of the feed metabolized. By selecting inputs to an aquaculture feeding and/or fertilization system such that the components have significantly different δ C values, the relative meta-bolization of each of these inputs by the fish can be measured. In tank-grown Tilapia aurea (δ C = -17), supplied feed (δ C = -18) provided the carbon incorporated into the fish body even though between feedings the fish consumed large quantities of algae (δ C = -22). In penaeid (δ C = -12) grow-out ponds, δ C analyses indicated that selected components of the feed pellet (average δC = -17; components: corn and sorghum δ C ∼ -12, soybeans δ C ∼-25) were metabolized, while the benthic natural foods and other bottom organic matter (δ C = -21) provided little or no input. The value of such information for pond management and nutrition studies is clear. © 1983.
Note:
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More details
DOI :
10.1016/0044-8486(83)90162-X
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19634
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:30
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Scientific Publication
Stable isotope ratios as naturally occurring tracers in the aquaculture food web
30
Schroeder, G.L., Institute of Animal Sciences, Agricultural Research Organization: The Volcani Center, P.O.B. 6, Beit Dagan, Israel
Stable isotope ratios as naturally occurring tracers in the aquaculture food web
The natural isotopic ratio of 13C12C (reported as δ C) in plant matter varies predictably among plant types. The isotopic ratio of an animal body reflects the isotopic ratio of the feed metabolized. By selecting inputs to an aquaculture feeding and/or fertilization system such that the components have significantly different δ C values, the relative meta-bolization of each of these inputs by the fish can be measured. In tank-grown Tilapia aurea (δ C = -17), supplied feed (δ C = -18) provided the carbon incorporated into the fish body even though between feedings the fish consumed large quantities of algae (δ C = -22). In penaeid (δ C = -12) grow-out ponds, δ C analyses indicated that selected components of the feed pellet (average δC = -17; components: corn and sorghum δ C ∼ -12, soybeans δ C ∼-25) were metabolized, while the benthic natural foods and other bottom organic matter (δ C = -21) provided little or no input. The value of such information for pond management and nutrition studies is clear. © 1983.
Scientific Publication
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