How Different Stocking Densities Affect Growth and Stress Status of Acipenser baerii Early Stage Larvae
In the present study, a multidisciplinary approach was used in order to evaluate growth, muscle development, and stress status in Siberian sturgeon Acipenser baerii larvae at schooling (T1) and complete yolk sac absorption (T2), reared at three stocking densities (low, medium, and high). Larvae grow...
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ftmdpi:oai:mdpi.com:/2076-2615/10/8/1289/ 2023-08-20T03:59:03+02:00 How Different Stocking Densities Affect Growth and Stress Status of Acipenser baerii Early Stage Larvae Lucia Aidos Alessandra Cafiso Valentina Serra Mauro Vasconi Daniela Bertotto Chiara Bazzocchi Giuseppe Radaelli Alessia Di Giancamillo agris 2020-07-28 application/pdf https://doi.org/10.3390/ani10081289 EN eng Multidisciplinary Digital Publishing Institute Aquatic Animals https://dx.doi.org/10.3390/ani10081289 https://creativecommons.org/licenses/by/4.0/ Animals; Volume 10; Issue 8; Pages: 1289 siberian sturgeon larvae stocking density stress muscle development Text 2020 ftmdpi https://doi.org/10.3390/ani10081289 2023-07-31T23:50:32Z In the present study, a multidisciplinary approach was used in order to evaluate growth, muscle development, and stress status in Siberian sturgeon Acipenser baerii larvae at schooling (T1) and complete yolk sac absorption (T2), reared at three stocking densities (low, medium, and high). Larvae growth, morphological muscle development, and whole-body cortisol levels were assessed. The expression of genes involved in the growth process (igf1 and igf2), in the myogenesis (myog), and in the regulation of cellular stress (glut1, glut2, glut4, and hsp70) was analyzed using a quantitative PCR. Larvae reared at lower densities showed a higher Specific Growth Rate and showed a physiological muscle development. Cortisol levels were low and did not differ significantly, both in different time sampling and across densities, suggesting that either the considered densities are not stressors in this species in the early stages of development or the hypothalamus-pituitary-adrenal (HPA) axis is not yet fully mature. Gene expression of glut1, igf1, and igf2 showed an up-regulation in both developmental stages at all the rearing densities considered, while myog significantly up-regulated at T1 at the highest density. Considering all of the results, it would seem that lower densities should be used in these stages of development, as these showed a higher growth rate, even if it is not economically feasible in commercial hatcheries. Therefore, choosing an intermediate stocking density could be a good compromise between larval performance and economical feasibility. Text Acipenser baerii Siberian sturgeon MDPI Open Access Publishing Animals 10 8 1289 |
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English |
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siberian sturgeon larvae stocking density stress muscle development |
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siberian sturgeon larvae stocking density stress muscle development Lucia Aidos Alessandra Cafiso Valentina Serra Mauro Vasconi Daniela Bertotto Chiara Bazzocchi Giuseppe Radaelli Alessia Di Giancamillo How Different Stocking Densities Affect Growth and Stress Status of Acipenser baerii Early Stage Larvae |
topic_facet |
siberian sturgeon larvae stocking density stress muscle development |
description |
In the present study, a multidisciplinary approach was used in order to evaluate growth, muscle development, and stress status in Siberian sturgeon Acipenser baerii larvae at schooling (T1) and complete yolk sac absorption (T2), reared at three stocking densities (low, medium, and high). Larvae growth, morphological muscle development, and whole-body cortisol levels were assessed. The expression of genes involved in the growth process (igf1 and igf2), in the myogenesis (myog), and in the regulation of cellular stress (glut1, glut2, glut4, and hsp70) was analyzed using a quantitative PCR. Larvae reared at lower densities showed a higher Specific Growth Rate and showed a physiological muscle development. Cortisol levels were low and did not differ significantly, both in different time sampling and across densities, suggesting that either the considered densities are not stressors in this species in the early stages of development or the hypothalamus-pituitary-adrenal (HPA) axis is not yet fully mature. Gene expression of glut1, igf1, and igf2 showed an up-regulation in both developmental stages at all the rearing densities considered, while myog significantly up-regulated at T1 at the highest density. Considering all of the results, it would seem that lower densities should be used in these stages of development, as these showed a higher growth rate, even if it is not economically feasible in commercial hatcheries. Therefore, choosing an intermediate stocking density could be a good compromise between larval performance and economical feasibility. |
format |
Text |
author |
Lucia Aidos Alessandra Cafiso Valentina Serra Mauro Vasconi Daniela Bertotto Chiara Bazzocchi Giuseppe Radaelli Alessia Di Giancamillo |
author_facet |
Lucia Aidos Alessandra Cafiso Valentina Serra Mauro Vasconi Daniela Bertotto Chiara Bazzocchi Giuseppe Radaelli Alessia Di Giancamillo |
author_sort |
Lucia Aidos |
title |
How Different Stocking Densities Affect Growth and Stress Status of Acipenser baerii Early Stage Larvae |
title_short |
How Different Stocking Densities Affect Growth and Stress Status of Acipenser baerii Early Stage Larvae |
title_full |
How Different Stocking Densities Affect Growth and Stress Status of Acipenser baerii Early Stage Larvae |
title_fullStr |
How Different Stocking Densities Affect Growth and Stress Status of Acipenser baerii Early Stage Larvae |
title_full_unstemmed |
How Different Stocking Densities Affect Growth and Stress Status of Acipenser baerii Early Stage Larvae |
title_sort |
how different stocking densities affect growth and stress status of acipenser baerii early stage larvae |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/ani10081289 |
op_coverage |
agris |
genre |
Acipenser baerii Siberian sturgeon |
genre_facet |
Acipenser baerii Siberian sturgeon |
op_source |
Animals; Volume 10; Issue 8; Pages: 1289 |
op_relation |
Aquatic Animals https://dx.doi.org/10.3390/ani10081289 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ani10081289 |
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Animals |
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10 |
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8 |
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1289 |
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1774712789364899840 |