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פותח על ידי קלירמאש פתרונות בע"מ -
Effect of diatom diets on growth and survival of the abalone Haliotis discus hannai postlarvae
Year:
2006
Source of publication :
Aquaculture (source)
Authors :
הרפז, שנאן
;
.
Volume :
252
Co-Authors:
Gordon, N., Israel Oceanographic and Limnological Research, National Center for Mariculture, P.O. Box 1212, Eilat 88112, Israel
Neori, A., Israel Oceanographic and Limnological Research, National Center for Mariculture, P.O. Box 1212, Eilat 88112, Israel
Shpigel, M., Israel Oceanographic and Limnological Research, National Center for Mariculture, P.O. Box 1212, Eilat 88112, Israel
Lee, J., Department of Biology, City College, City University of New York, New York, NY 10031, United States
Harpaz, S., Department of Aquaculture, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
225
To page:
233
(
Total pages:
9
)
Abstract:
Growth and survival of postlarval abalone Haliotis discus hannai Ino fed different diatom diets were examined for one month from settlement. Two diatoms, Amphora luciae Cholnoky and Navicula cf. lenzii Hustedt, supported high postlarval growth and survival, especially when supplied in combination. A third species, Nitzschia laevis Hustedt, did not support survival for more than two weeks as a unialgal diet and had limited value in mixed diets. Diatom mixtures were superior to single-species diets as of the first week after settlement. The mixture of N. cf. lenzii and A. lucia supported the highest survival, up to 50%, and growth rate up to 36μm of shell length per day, reaching a size of 1.4mm 30 days after settlement. The three diatom species contained high levels of total lipids (6.4%-14.5% of dry weight) and fatty acids (16%-22% of lipids); from 39% to 48% of fatty acids were polyunsaturated (PUFA). The three diatoms were richer in n-3 PUFA than in n-6 PUFA. The content of the essential fatty acid 20:5n-3 (EPA) was highest among the PUFAs and higher, though not significantly, in the two diatom species A. luciae and N. cf. lenzii that produced the better results. Among the free amino acids, arginine was dominant in N. laevis, proline in N. cf. lenzii, and both free amino acids plus glutamic acid were equally dominant in A. luciae. The suitability of A. luciae and N. cf. lenzii for enhancing growth and survival of postlarvae was attributed to their complementary balanced nutritional properties. © 2005 Elsevier B.V. All rights reserved.
Note:
Related Files :
Abalone
Amino Acids
Amphora
biochemical composition
fatty acids
Growth
Haliotis corrugata
Navicula lenzii
shellfish culture
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.aquaculture.2005.06.034
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
30904
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:58
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Scientific Publication
Effect of diatom diets on growth and survival of the abalone Haliotis discus hannai postlarvae
252
Gordon, N., Israel Oceanographic and Limnological Research, National Center for Mariculture, P.O. Box 1212, Eilat 88112, Israel
Neori, A., Israel Oceanographic and Limnological Research, National Center for Mariculture, P.O. Box 1212, Eilat 88112, Israel
Shpigel, M., Israel Oceanographic and Limnological Research, National Center for Mariculture, P.O. Box 1212, Eilat 88112, Israel
Lee, J., Department of Biology, City College, City University of New York, New York, NY 10031, United States
Harpaz, S., Department of Aquaculture, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Effect of diatom diets on growth and survival of the abalone Haliotis discus hannai postlarvae
Growth and survival of postlarval abalone Haliotis discus hannai Ino fed different diatom diets were examined for one month from settlement. Two diatoms, Amphora luciae Cholnoky and Navicula cf. lenzii Hustedt, supported high postlarval growth and survival, especially when supplied in combination. A third species, Nitzschia laevis Hustedt, did not support survival for more than two weeks as a unialgal diet and had limited value in mixed diets. Diatom mixtures were superior to single-species diets as of the first week after settlement. The mixture of N. cf. lenzii and A. lucia supported the highest survival, up to 50%, and growth rate up to 36μm of shell length per day, reaching a size of 1.4mm 30 days after settlement. The three diatom species contained high levels of total lipids (6.4%-14.5% of dry weight) and fatty acids (16%-22% of lipids); from 39% to 48% of fatty acids were polyunsaturated (PUFA). The three diatoms were richer in n-3 PUFA than in n-6 PUFA. The content of the essential fatty acid 20:5n-3 (EPA) was highest among the PUFAs and higher, though not significantly, in the two diatom species A. luciae and N. cf. lenzii that produced the better results. Among the free amino acids, arginine was dominant in N. laevis, proline in N. cf. lenzii, and both free amino acids plus glutamic acid were equally dominant in A. luciae. The suitability of A. luciae and N. cf. lenzii for enhancing growth and survival of postlarvae was attributed to their complementary balanced nutritional properties. © 2005 Elsevier B.V. All rights reserved.
Scientific Publication
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