How do temperatures affect the performance, muscular cellularity and physiological parameters of tambaqui (Colossoma macropomum) and hybrid tambatinga (C. macropomum x Piaractus brachypomus)?
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Le résumé fourni par la source
Abstract This study evaluated the effects of different water temperatures on growth parameters, muscle cellularity and physiological responses of juveniles of tambaqui ( Colossoma macropomum ) and hybrid tambatinga (♀ C. macropomum × ♂ Piaractus brachypomus ) reared in a recirculating aquaculture system (RAS). A total of 224 juveniles (112 per fish group; initial weight of 1.31 ± 0.39 g) were distributed at 0.5 fish L⁻ 1 in 16 circular tanks (28 L each), in a completely randomized 2 × 2 factorial design with four replicates following treatment: CT 28 , HT 28 , CT 32 , and HT 32 , corresponding to the two fish group maintained at 28 °C or 32 °C for 30 days. Dissolved oxygen and water pH were lower at 32ºC ( P < 0.05). After 15 and 30 days, C. macropomum showed greater weight, weight gain, daily weight gain and biomass than the hybrid, regardless of temperature ( P < 0.05). Plasma protein showed an interaction effect, with higher values in tambatinga at both temperatures. In the comparison between fish groups, only HT 32 showed values higher than HT 28 (P < 0.05). Hemoglobin concentrations were higher for C. macropomum and 32ºC ( P < 0.05). Hepatosomatic and viscerosomatic indices were higher in C. macropomum at 28 °C (P < 0.05), while muscle cellularity varied between fish group and temperatures, with hybrid tambatinga presenting larger fiber diameters and 32 °C promoting hypertrophy (P < 0.05). Therefore, the temperature of 32 °C promoted short-term growth in RAS, particularly in juvenile C. macropomum , and induced genotype-specific physiological and muscular responses. However, considering the short duration of the study, further studies are needed to establish definitive recommendations.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- How do temperatures affect the performance, muscular cellularity and physiological parameters of tambaqui (Colossoma macropomum) and hybrid tambatinga (C. macropomum x Piaractus brachypomus)?
- Date Crossref
- 24/03/2026
- Éditeur
- Springer Science and Business Media LLC
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Universidade Federal de Minas Gerais pays non établi dans la noticeUniversité ou école supérieure
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Pontifícia Universidade Católica de Minas Gerais pays non établi dans la noticeUniversité ou école supérieure
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Pontifica Universidade Católica de Minas Geras (PUC Minas) pays non établi dans la noticeUniversité ou école supérieure
Universidade Federal de Minas Gerais, Pontifícia Universidade Católica de Minas Gerais et Pontifica Universidade Católica de Minas Geras (PUC Minas).
Une affiliation ne permet pas de déduire la nationalité d’un auteur.