Temperature and food availability alters the physiology and aerobic capacity of tambaqui (Colossoma macropomum)

Barroso, Danilo da Costa; Almeida-Val, Vera Maria Fonseca de; Val, Adalberto Luís

doi:10.1016/j.cbpa.2020.110704

Cited by 9 publications

(1 citation statement)

References 51 publications

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“…The same relation was observed by Maciel Júnior (2006), who studied tilapia juveniles in temperatures ranging from 20 to 32°C and observed a linear reduction of liver size with increasing water temperature. According to Barroso et al (2020), higher temperatures accelerate fish metabolism, causing the accumulated energy reserves in the liver to be depleted, thus reducing the HSI. Regardless of water temperature or feeding regime, visceral fat levels were reduced, with less than 1% in all treatments.…”

Section: Discussionmentioning

confidence: 99%

GROWTH OF <i>Geophagus brasiliensis</i> REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

et al. 2021

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The aim of this study was to evaluate the growth performance of Geophagus brasiliensis rearedb under distinct temperatures (24.3 ± 0.9, 28.1 ± 1.0, and 31.7 ± 0.8°C) and feeding regimes (apparent satiety and a supply of 4% of the total biomass). About 500 wild-caught individuals were sorted and identified, to screen 180 fish to be used in the experiment (6.81 ± 1.15 g and 7.51 ± 0.47 cm). After a 55-day acclimatization period, the fish were distributed in experimental tanks, considering a double factorial randomized blocks scheme, composed of six treatments and three replicates. Growth performance parameters, somatic indexes and carcass yield were evaluated at the end of the experimental period (72 days). Fish fed to the point of apparent satiety presented higher (p <0.05) final weight, weight gain, specific growth rate and hepatosomatic index. The animals reared at a temperature of 24.3°C displayed higher (p <0.05) final weight, weight gain, specific growth, hepatosomatic index, lower visceral fat, and feed conversion index. It was concluded that G. brasiliensis presents higher productive indexes when fed until apparent satiety and reared in temperatures close to 24.3°C.

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Section: Discussionmentioning

confidence: 99%

GROWTH OF <i>Geophagus brasiliensis</i> REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

et al. 2021

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Ecological adaptations of Amazonian fishes acquired during evolution under environmental variations in dissolved oxygen: A review of responses to hypoxia in fishes, featuring the hypoxia‐tolerantAstronotusspp.

Braz-Mota

Almeida-Val

2021

J Exp Zool Pt A

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The Amazon Basin presents a dynamic regime of dissolved oxygen (DO) oscillations, which varies among habitats within the basin, including spatially, daily, and seasonally. Fish species inhabiting these environments have developed many physiological adaptations to deal with the frequent and periodic events of low (hypoxia), or no (anoxia) DO in the water. Cichlid fishes, especially the genus Astronotus (A. ocellatus and A. crassipinnis), are hypoxic‐tolerant species that can survive in very low DO levels for long periods, while adults often inhabit places where DO is close to zero. The present review will focus on some metabolic adjustments that Amazonian fish use in response to hypoxic conditions, which include many strategies from behavioral, morphological, physiological, and biochemical strategies. These strategies include ASR (aerial surface respiration), lip expansion, branchial tissue remodeling, increases in glycolytic metabolism with the increase of blood glucose levels, and increases in anaerobic metabolism with increases of plasma lactate levels. Other groups over evolutionary time developed obligate aerial respiration with changes in pharyngeal and swim bladder vascularization as well as the development of a true lung. However, most species are water‐breathing species, such as A. ocellatus and A. crassipinnis, which are detailed in this study because they are used as hypoxia‐tolerant model fish. Herein, we draw together the literature data of the physiological mechanisms by which these species decrease aerobic metabolism and increase anaerobic metabolism to survive hypoxia. This is the first attempt to synthesize the physiological mechanisms of the hypoxia‐tolerant Astronotus species.

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Colossoma macropomum—A tropical fish model for biology and aquaculture

Val

Oliveira

2021

J Exp Zool Pt A

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Tambaqui, a species native to the Amazon and Orinoco Basins and their tributaries, has a history marked by biological resilience that makes this species a model for studies focused on ecology, physiology, and fish farming. In addition, it is of economic interest, due to its favorable characteristics for production in farms and its unique flavor. As the tambaqui responds in a unique way to several environmental disturbances of natural origin, the species is often used in environmental studies. Some of these studies have been revisited in this review. We revised aspects related to its natural history, habitats and geographic distribution, physiological and biochemical adaptations, and zootechnical performance. The extraordinary adaptation of the tambaqui is the fast expansion of its lower lip when exposed to low oxygen availability that is improved simultaneously with other adjustments. The resilience of this species to significant alterations in water pH is also surprising, and is incomparable with that of other species, as only when it is exposed to pH 3.5, does the tambaqui begin to present physiological‐biochemical disturbances. The analysis of the gene expression of tambaqui specimens under different experimental conditions has shed light on the adaptive mechanisms used by this unique Amazonian species. In this sense, this review sought to gather information regarding the tambaqui, and its many biological features employed to survive environmental challenges.

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Temperature and food availability alters the physiology and aerobic capacity of tambaqui (Colossoma macropomum)

Cited by 9 publications

References 51 publications

GROWTH OF <i>Geophagus brasiliensis</i> REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

GROWTH OF <i>Geophagus brasiliensis</i> REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

Ecological adaptations of Amazonian fishes acquired during evolution under environmental variations in dissolved oxygen: A review of responses to hypoxia in fishes, featuring the hypoxia‐tolerantAstronotusspp.

Colossoma macropomum—A tropical fish model for biology and aquaculture

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