1
|
ROSA SS, BALDAN AP, BENDHACK F, PASCHOAL AFL, CORDEIRO ALA, KIRSCHNIK PG, BORGES TD, MACEDO REF. Transporting live silver catfish (Rhamdia quelen) with salt addition does not mitigate fish stress and negatively affects meat quality. FOOD SCIENCE AND TECHNOLOGY 2019. [DOI: 10.1590/fst.23318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
2
|
Copatti CE, Bolner KCS, Londero ÉP, Rosso FLDE, Pavanato MA, Baldisserotto B. Low dissolved oxygen levels increase stress in piava (Megaleporinus obtusidens): iono-regulatory, metabolic and oxidative responses. AN ACAD BRAS CIENC 2019; 91:e20180395. [PMID: 31432900 DOI: 10.1590/0001-3765201920180395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 10/11/2018] [Indexed: 01/14/2023] Open
Abstract
The aquatic environment presents daily and/or seasonal variations in dissolved oxygen (DO) levels. Piava faces different DO levels in the water due to its distributional characteristics. The goal of this study was to describe the effects of low DO levels on plasma ion, biochemical and oxidative variables in piava juveniles. Fish were exposed to different DO levels, including 1.0, 2.0, 3.0, 4.0 and 5.0 mg L-1 of DO for 96 h, after which blood and tissue samples (liver, kidney, gill and muscle) were collected. The decrease in DO levels decreased plasma Na+, Cl-, K+ and NH3 levels as well as protein and glycogen levels in the liver, kidney and muscle; increased Na+/K+-ATPase activity in the gills and kidney as well as glucose and ammonia levels in the liver, kidney and muscle; and increased lactate levels in the kidney and muscle. Thiobarbituric acid-reacting substances, catalase and non-protein thiol levels decreased in the tissues of piavas exposed to low DO levels. It is concluded that piava can apparently cope with hypoxic conditions; however, low DO levels are a stressor, and the tolerance of piava to hypoxia involves iono-regulatory, metabolic and oxidative adjustments.
Collapse
Affiliation(s)
- Carlos E Copatti
- Instituto de Biologia, Universidade Federal da Bahia, Av. Adhemar de Barros, 500, 40170-110 Ondina, Salvador, BA, Brazil
| | - Keidi C S Bolner
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Av. Roraima, 1000, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Érika P Londero
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Av. Roraima, 1000, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Felipe L DE Rosso
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Av. Roraima, 1000, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Maria A Pavanato
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Av. Roraima, 1000, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Bernardo Baldisserotto
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Av. Roraima, 1000, Camobi, 97105-900 Santa Maria, RS, Brazil
| |
Collapse
|
3
|
Rebouças P, Lima L, Dias Í, Barbosa Filho J. Influência da oscilação térmica na água da piscicultura. JOURNAL OF ANIMAL BEHAVIOUR AND BIOMETEOROLOGY 2014. [DOI: 10.14269/2318-1265.v02n02a01] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
4
|
Humic acid and moderate hypoxia alter oxidative and physiological parameters in different tissues of silver catfish (Rhamdia quelen). J Comp Physiol B 2014; 184:469-82. [DOI: 10.1007/s00360-014-0808-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 12/08/2013] [Accepted: 12/17/2013] [Indexed: 12/12/2022]
|
5
|
Dolci GS, Dias VT, Roversi K, Roversi K, Pase CS, Segat HJ, Teixeira AM, Benvegnú DM, Trevizol F, Barcelos RCS, Riffel APK, Nunes MAG, Dressler VL, Flores EMM, Baldisserotto B, Bürger ME. Moderate hypoxia is able to minimize the manganese-induced toxicity in tissues of silver catfish (Rhamdia quelen). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 91:103-109. [PMID: 23433555 DOI: 10.1016/j.ecoenv.2013.01.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Revised: 01/14/2013] [Accepted: 01/17/2013] [Indexed: 06/01/2023]
Abstract
The aim of this study was to compare the effects of manganese (Mn) on silver catfish exposed to different levels of dissolved oxygen. Silver catfish (Rhamdia quelen) were exposed to increasing concentrations of Mn (4.2, 8.4 or 16.2mgL(-1)) under either normoxia (100 percent saturation) or moderate hypoxia (51.87 percent saturation) for 15 days. Under normoxia, Mn exposure increased lipid peroxidation (LP) in brain and kidney; it increased gluthatione (GSH) levels in brain and decreased catalase (CAT) activity in both tissues. Moderate hypoxia was able to prevent Mn-induced LP in brain and to reduce this oxidative parameter in kidney; GSH level was increased in brain, while CAT activity was reduced in both tissues. Activity of isolated mitochondria of liver and gills was reduced by Mn exposure under both levels of dissolved oxygen, but this effect was more prominent in normoxia. As expected, liver, kidney and gills showed an increase of Mn accumulation according to waterborne levels, and these parameters presented positive relationship. The highest waterborne Mn (8.4 and 16.2mgL(-1)) resulted in greater accumulation under normoxia, indicating that moderate hypoxia can stimulate mechanisms capable of reducing Mn accumulation in tissues (though not in blood). Moderate hypoxia can be considered a stress factor and Mn an aquatic anthropogenic contaminant. Therefore we hypothesized that these two conditions together are able to invoke defense mechanisms in juvenile silver catfish, acting in a compensatory form, which may be related to adaptation and/or hormesis.
Collapse
Affiliation(s)
- G S Dolci
- Programa de Pós-Graduação em Farmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria (UFSM), Rio Grande do Sul, Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Baldisserotto B, Copatti CE, Gomes LC, Chagas EC, Brinn RP, Roubach R. Calcium fluxes in Hoplosternum littorale (tamoatá) exposed to different types of Amazonian waters. NEOTROPICAL ICHTHYOLOGY 2009. [DOI: 10.1590/s1679-62252009005000002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fishes that live in the Amazonian environment may be exposed to several kinds of waters: "black waters", containing high dissolved organic carbon and acidic pH, "white waters", with ten fold higher Ca2+ concentrations than black waters and neutral pH, and "clear waters", with two fold higher Ca2+ concentrations than black waters and also neutral pH. Therefore, the aim of the present study was to analyze Ca2+ fluxes in the facultative air-breather Hoplosternum littorale (tamoatá) exposed to different Amazonian waters. Fishes were acclimated in well water (similar to clear water) and later placed in individual chambers for Ca2+ fluxes measurements. After 4 h, water from the chambers was replaced by a different type of water. Transfer of tamoatás to ion-poor black or acidic black water resulted in net Ca2+ loss only in the first 2 h of experiment. However, transfer from black or acidic black water to white water led to only net Ca2+ influxes. The results obtained allowed us to conclude that transfer of tamoatás to ion-poor waters (black and acidic black water) led to transient net Ca2+ loss, while the amount of Ca2+ in the ion-rich white water seems adequate to prevent Ca2+ loss after transfer. Therefore, transfer of tamoatás between these Amazonian waters does not seem to result in serious Ca2+ disturbance.
Collapse
|