Comparative study of the chemical composition, fatty acid profile, and nutritional quality of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae), a Brazilian carnivorous freshwater fish, grown in lotic, lentic, and aquaculture environments
ABSTRACT Lophiosilurus alexandri is a carnivorous freshwater fish endemic of São Francisco basin and an endangered species. In this study, we analysed the chemical composition (moisture, protein, ash and lipid), fatty acid profile, and nutritional quality (atherogenic index, thrombogenecity index, r...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
2019-12-01
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500211&tlng=en |
| _version_ | 1818744637859299328 |
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| author | Léa S. Sant´Ana Adriane A. Iwamoto Daniel V. Crepaldi Túlio P. Boaventura Lilian V. Teixeira Edgar A. Teixeira Ronald K. Luz |
| author_facet | Léa S. Sant´Ana Adriane A. Iwamoto Daniel V. Crepaldi Túlio P. Boaventura Lilian V. Teixeira Edgar A. Teixeira Ronald K. Luz |
| author_sort | Léa S. Sant´Ana |
| collection | DOAJ |
| description | ABSTRACT Lophiosilurus alexandri is a carnivorous freshwater fish endemic of São Francisco basin and an endangered species. In this study, we analysed the chemical composition (moisture, protein, ash and lipid), fatty acid profile, and nutritional quality (atherogenic index, thrombogenecity index, ratio between hypocholesterolemic and hypercholesterolemic fatty acids and ω6/ω3 = ratio) of L. alexandri in lotic (river), lentic (hydroelectric dams) environments, under natural fed, and in laboratory controlled conditions fed with commercial diets. Cultured and lentic fish had significantly higher lipid levels (1.5 and 1.9- fold, respectively) than lotic fish. Lentic L. alexandri had significantly higher eicosapentaenoic acid (EPA) levels (4×) than cultured or lotic L. alexandri. Docosahexaenoic acid (DHA) levels were the highest in lentic fish, followed by lotic fish. Lentic fish had greater proportion of fatty acid ω6/ω3 than lotic or cultured fish. The results of this study showed that L. alexandri is a lean fish (1-2% of total lipids) and that the environment has a great influence on the fatty acid profile. These results may be a reference for further studies, primarily as a source of information for conservation L. alexandri through restocking and the development of commercial projects of aquaculture. |
| first_indexed | 2024-12-18T02:47:29Z |
| format | Article |
| id | doaj.art-9675f0491ec347b888c366f33b2b8378 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-18T02:47:29Z |
| publishDate | 2019-12-01 |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-9675f0491ec347b888c366f33b2b83782022-12-21T21:23:31ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242019-12-0117410.1590/1982-0224-20190050Comparative study of the chemical composition, fatty acid profile, and nutritional quality of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae), a Brazilian carnivorous freshwater fish, grown in lotic, lentic, and aquaculture environmentsLéa S. Sant´Anahttps://orcid.org/0000-0002-1170-7023Adriane A. Iwamotohttps://orcid.org/0000-0002-4263-5421Daniel V. Crepaldihttps://orcid.org/0000-0002-6691-8602Túlio P. Boaventurahttps://orcid.org/0000-0002-6143-5417Lilian V. Teixeirahttps://orcid.org/0000-0001-7878-4085Edgar A. Teixeirahttps://orcid.org/0000-0002-9549-7499Ronald K. Luzhttps://orcid.org/0000-0002-1021-5772ABSTRACT Lophiosilurus alexandri is a carnivorous freshwater fish endemic of São Francisco basin and an endangered species. In this study, we analysed the chemical composition (moisture, protein, ash and lipid), fatty acid profile, and nutritional quality (atherogenic index, thrombogenecity index, ratio between hypocholesterolemic and hypercholesterolemic fatty acids and ω6/ω3 = ratio) of L. alexandri in lotic (river), lentic (hydroelectric dams) environments, under natural fed, and in laboratory controlled conditions fed with commercial diets. Cultured and lentic fish had significantly higher lipid levels (1.5 and 1.9- fold, respectively) than lotic fish. Lentic L. alexandri had significantly higher eicosapentaenoic acid (EPA) levels (4×) than cultured or lotic L. alexandri. Docosahexaenoic acid (DHA) levels were the highest in lentic fish, followed by lotic fish. Lentic fish had greater proportion of fatty acid ω6/ω3 than lotic or cultured fish. The results of this study showed that L. alexandri is a lean fish (1-2% of total lipids) and that the environment has a great influence on the fatty acid profile. These results may be a reference for further studies, primarily as a source of information for conservation L. alexandri through restocking and the development of commercial projects of aquaculture.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500211&tlng=enDamFeedingLipidsPacamãΩ3 |
| spellingShingle | Léa S. Sant´Ana Adriane A. Iwamoto Daniel V. Crepaldi Túlio P. Boaventura Lilian V. Teixeira Edgar A. Teixeira Ronald K. Luz Comparative study of the chemical composition, fatty acid profile, and nutritional quality of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae), a Brazilian carnivorous freshwater fish, grown in lotic, lentic, and aquaculture environments Neotropical Ichthyology Dam Feeding Lipids Pacamã Ω3 |
| title | Comparative study of the chemical composition, fatty acid profile, and nutritional quality of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae), a Brazilian carnivorous freshwater fish, grown in lotic, lentic, and aquaculture environments |
| title_full | Comparative study of the chemical composition, fatty acid profile, and nutritional quality of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae), a Brazilian carnivorous freshwater fish, grown in lotic, lentic, and aquaculture environments |
| title_fullStr | Comparative study of the chemical composition, fatty acid profile, and nutritional quality of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae), a Brazilian carnivorous freshwater fish, grown in lotic, lentic, and aquaculture environments |
| title_full_unstemmed | Comparative study of the chemical composition, fatty acid profile, and nutritional quality of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae), a Brazilian carnivorous freshwater fish, grown in lotic, lentic, and aquaculture environments |
| title_short | Comparative study of the chemical composition, fatty acid profile, and nutritional quality of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae), a Brazilian carnivorous freshwater fish, grown in lotic, lentic, and aquaculture environments |
| title_sort | comparative study of the chemical composition fatty acid profile and nutritional quality of lophiosilurus alexandri siluriformes pseudopimelodidae a brazilian carnivorous freshwater fish grown in lotic lentic and aquaculture environments |
| topic | Dam Feeding Lipids Pacamã Ω3 |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500211&tlng=en |
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