Energy budget and physiology in early ontogenetic stages of the Amazon river prawn☆

Augusto, Alessandra; New, Michael B.; Santos, Michelle R.; Amorim, Rafael Vieira; Valenti, Wagner C.

doi:10.1016/j.aqrep.2020.100446

Cited by 3 publications

(1 citation statement)

References 52 publications

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“…It is clear that protein is the main energetic substrate for several species of American Macrobrachium , such as M. americanum (Méndez‐Martínez et al, 2017), Macrobrachium tenellum (Espinosa‐Chaurand et al, 2012), and Macrobrachium amazonicum (Augusto et al, 2020). However, little information is available regarding the role of lipids and carbohydrates as energy substrates for these species.…”

Section: Discussionmentioning

confidence: 99%

Growth performance and gene expression of FAS, CPT1, G6P, and HK in juveniles of the freshwater prawn, Macrobrachium acanthurus, fed diets with different levels of protein, lipids, and carbohydrates

Gómez

Powell

Álvarez-González

et al. 2023

J World Aquaculture Soc

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A feeding trial with Macrobrachium acanthurus juveniles was performed to determine growth performance and utilization of diets varying in protein, lipid, and carbohydrate level. Twelve diets were formulated with three levels of protein (P) and supplemented with different proportions of lipids (L) and carbohydrates (C): P30‐L20‐C8, P30‐L15‐C19, P30‐L12‐C25, P30‐L10‐C31, P35‐L20‐C3, P35‐L15‐C15, P35‐L10‐C26, P35‐L5‐C38, P40‐L15‐C8, P40‐L10‐C19, P40‐L5‐C31, and P40‐L1‐C40. Lipids and carbohydrates were added allowing an overall energy content limit of 400 kcal per 100 g of diet. Each diet was fed to triplicate groups of juveniles with an initial weight of 60.9 ± 10.9 mg (mean ± SD) for 60 days. Overall growth performance and gene expression of fatty acid synthase (FAS), carnitine palmitoyltransferase 1 (CPT1), glucose‐6‐phosphatase (G6P), and hexokinase (HK) in the hepatopancreas were assessed. Highest weight gain values and specific growth rates were observed in prawns fed diets with 35% of protein inclusion. Expression of FAS was downregulated when fed 30% of protein. Results indicate M. acanthurus use protein as their primary source of energy and when this is low in the diet, lipids are used to spare the energy from proteins. Suggested inclusion of protein, lipids, and carbohydrates in diets for M. acanthurus should be 35%, 15%, and 15%, respectively.

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Section: Discussionmentioning

confidence: 99%

Growth performance and gene expression of FAS, CPT1, G6P, and HK in juveniles of the freshwater prawn, Macrobrachium acanthurus, fed diets with different levels of protein, lipids, and carbohydrates

Gómez

Powell

Álvarez-González

et al. 2023

J World Aquaculture Soc

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Interaction between reduced pH and multiple stressors affects the physiology of the fiddler crabLeptuca thayeri(Rathbun, 1900) (Decapoda: Brachyura: Ocypodidae)

Andrade

Ferreira

Ramaglia

et al. 2022

Journal of Crustacean Biology

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Increasing ocean acidification combined with other impacts may cause changes in homeostatic mechanisms of intertidal invertebrates. Stressors do not act in isolation, and experimental work is needed to assess their synergistic potential. We evaluated the effect of exposure to multiple stressors on the survival, osmoregulation, metabolism, Q10, excretion, hepatosomatic index, and energy substrate oxidation on of the fiddler crab Leptuca thayeri (Rathbun, 1900). Crabs were exposed to two pH values (7.0, 6.3) combined with temperatures (20, 25, 30, 35, 40 °C) and these pH values combined with salinities (10, 20, 30, 40, and 50 psu) during acute exposure. All individuals died at 40 °C. Crabs osmoregulated, suggesting that the factors evaluated did not affect salt absorption or secretion. Individuals were weak hyperosmorregulators at lower salinities in the pH 7 control, but they became strong hyperosmoregulators at acidified pH 6.3. Alterations in oxygen consumption and hepatosomatic index were observed in individuals exposed to the acidified pH combined with temperatures or salinities, compared to those kept in the control pH. Q10 was elevated under an acidified pH, with crabs using proteins and lipids as energy substrates. The interaction between reduced pH and temperature or salinity thus affected physiological mechanisms related to the energetic metabolism, but elevated temperatures are more limiting because they affected survival. These physiological effects of acute exposure offer clues about extreme climatic events, which have a short duration but can affect the related energy demands.

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Chronic Cadmium Exposure Can Modifies Energy Allocation to Physiological Functions in the Shrimp Penaeus Vannamei

Costa

Capparelli

Padilha

et al. 2023

Preprint

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Energy budget and physiology in early ontogenetic stages of the Amazon river prawn☆

Cited by 3 publications

References 52 publications

Growth performance and gene expression of FAS, CPT1, G6P, and HK in juveniles of the freshwater prawn, Macrobrachium acanthurus, fed diets with different levels of protein, lipids, and carbohydrates

Growth performance and gene expression of FAS, CPT1, G6P, and HK in juveniles of the freshwater prawn, Macrobrachium acanthurus, fed diets with different levels of protein, lipids, and carbohydrates

Interaction between reduced pH and multiple stressors affects the physiology of the fiddler crabLeptuca thayeri(Rathbun, 1900) (Decapoda: Brachyura: Ocypodidae)

Chronic Cadmium Exposure Can Modifies Energy Allocation to Physiological Functions in the Shrimp Penaeus Vannamei

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