The effect of water pH on the incubation and larviculture of curimbatá Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae)

Reynalte‐Tataje, David Augusto; Baldisserotto, Bernardo; Zaniboni‐Filho, Evoy

doi:10.1590/1982-0224-20130127

Cited by 12 publications

(11 citation statements)

References 27 publications

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“…As high concentrations of monovalent hydrogen ions have an inhibitory effect on colloidal processes, the exposure of embryos to low pH water during perivitelline space formation leads to a reduction in water uptake [ 81 ]. This consequently results in decreased egg size, as was observed for several species [ 82 , 83 ]. Although egg swelling is mainly expected to occur during a short period of 0–3½ h after activation [ 49 ], alterations in water pH impedes embryonic development and may have detrimental effects [ 84 ].…”

Section: Discussionmentioning

confidence: 72%

CO2 induced seawater acidification impacts survival and development of European eel embryos

et al. 2022

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Fish embryos may be vulnerable to seawater acidification resulting from anthropogenic carbon dioxide (CO2) emissions or from excessive biological CO2 production in aquaculture systems. This study investigated CO2 effects on embryos of the European eel (Anguilla anguilla), a catadromous fish that is considered at risk from climate change and that is targeted for hatchery production to sustain aquaculture of the species. Eel embryos were reared in three independent recirculation systems with different pH/CO2 levels representing “control” (pH 8.1, 300 μatm CO2), end-of-century climate change (“intermediate”, pH 7.6, 900 μatm CO2) and “extreme” aquaculture conditions (pH 7.1, 3000 μatm CO2). Sensitivity analyses were conducted at 4, 24, and 48 hours post-fertilization (hpf) by focusing on development, survival, and expression of genes related to acute stress response (crhr1, crfr2), stress/repair response (hsp70, hsp90), water and solute transport (aqp1, aqp3), acid-base regulation (nkcc1a, ncc, car15), and inhibitory neurotransmission (GABAAα6b, Gabra1). Results revealed that embryos developing at intermediate pH showed similar survival rates to the control, but egg swelling was impaired, resulting in a reduction in egg size with decreasing pH. Embryos exposed to extreme pH had 0.6-fold decrease in survival at 24 hpf and a 0.3-fold change at 48 compared to the control. These observed effects of acidification were not reflected by changes in expression of any of the here studied genes. On the contrary, differential expression was observed along embryonic development independent of treatment, indicating that the underlying regulating systems are under development and that embryos are limited in their ability to regulate molecular responses to acidification. In conclusion, exposure to predicted end-of-century ocean pCO2 conditions may affect normal development of this species in nature during sensitive early life history stages with limited physiological response capacities, while extreme acidification will negatively influence embryonic survival and development under hatchery conditions.

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Section: Discussionmentioning

confidence: 72%

CO2 induced seawater acidification impacts survival and development of European eel embryos

et al. 2022

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“…Zungaro jahu , for example, hatches after 14.5 h at a temperature of 27.3°C (Nogueira et al, 2012). For other migratory species, hatching may range from 16 to 20 h depending on water temperature: Prochilodus lineatus —19.5 h at 24–25°C (Reynalte‐Tataje et al, 2015); Pimelodus maculatus —16.3 h at 24.2°C (Sato et al, 1999), Brycon orbignyanus —18.5 h at 25.0°C (Reynalte‐Tataje et al, 2004), Piaractus mesopotamicus —18 to 22 h at 22°C to 28°C (Urbinati & Gonçalves, 2005), Pseudoplatystoma corruscans —16 to 20 h at 28°C (Campos, 2005), and Pseudoplatystoma reticulatum —14 h at 28.2°C (Andrade et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Importance of a turbulent river section below a giant waterfall for fish spawning: Indications from drift and dispersion patterns of early life stages

et al. 2021

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Seasonal drift patterns of fish eggs and larvae were analysed along the river section downstream the Iguaçu River Falls to the confluence with Paraná River, over three spawning seasons. This river section is situated in a narrow rocky canyon characterized by a steep slope, which leads to highly turbulent and fast flowing conditions in a series of rapids. Water transit time in this river stretch of 20 km was short (5–11 h), the flow‐velocity in rapids can reach values of more than 6 m s−1. Densities of drifting eggs and larvae varied between three spawning seasons, and differences of eggs were more pronounced compared to larvae. Eggs and larvae were observed all along the river section. A spatial, longitudinal distribution pattern of larvae was found, with higher numbers in the upper section. A distinct spatial sequence of different embryonic stages was observed, with the highest abundance of early stages. Larval densities were low in comparison to egg densities, and preflexion and flexion stages predominated. High abundance of buoyant eggs in drift indicates fish spawning in rapid and turbulent waters of the Iguaçu River, particularly downstream from the Iguaçu Falls. Rainfall and turbidity may be the main trigger for spawning. Spawned eggs drifted quickly towards the confluence, most are likely to hatch in the Paraná River, while larvae disperse to nursery habitats even in the river section below the falls. Thus, inshore zones along the whole stretch provide nursery habitats for larval development of fish species exhibiting different reproductive strategies.

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“…The larvae of streaked prochilod (Prochilodus lineatus) had a better chance of survival at an alkaline pH (8.7-9.2) (Zaniboni Filho et al, 2009) with the highest rate of survival of post-larval forms when eggs are incubated at a pH of 7.0-8.5 (Reynalte-Tataje et al, 2015). Greater numbers of juvenile P. lineatus and pike cichlid (Crenicichla lacustris) were also observed in more alkaline water (pH 8.0-8.2), while greater numbers of catfish (Pimelodus maculatus) were observed in water of a lower pH (6.9-7.2) in Paraíba do Sul River, southeastern Brazil (Araújo et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Freshwater parameters in the state of Rio Grande do Sul, southern Brazil, and their influence on fish distribution and aquaculture

et al. 2016

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This study analyzed the relationship between several water quality parameters (pH, hardness, alkalinity, turbidity, iron and manganese) levels measured over a 16 year period with fish distribution and aquaculture in the state of Rio Grande do Sul, Southern Brazil. The mean pH values were within a neutral range (6.5-7.5), but the maximum and minimum values reached inappropriate levels for fish farming in some cities. Alkalinity levels were very low (except in the southwest region of the state), which may have contributed to pH variation. Hardness, turbidity, iron (except the region near Caçapava do Sul City) and manganese were within safe ranges for fish farming; however, turbidity levels occasionally increased to levels outside the safe range. In conclusion, the water quality in the Rio Grande do Sul, in general, can be considered adequate for aquaculture, but the fish farmers must be aware of the methods to reduce turbidity, such as the use of calcium sulfate.Este estudo analisou a relação entre vários parâmetros de qualidade da água (pH, dureza, alcalinidade, turbidez, ferro e manganês durante 16 anos) com a distribuição de peixes e piscicultura no estado do Rio Grande do Sul, Brasil. O pH ficou em média em uma faixa neutra (6,(5)(6)(7)5), mas valores máximos e mínimos atingiram níveis não apropriados para a piscicultura em algumas cidades. Os valores de alcalinidade foram baixos (exceto na região sudoeste do estado), o que poderia contribuir para oscilações no pH. Dureza, turbidez, ferro (exceto na região próxima à cidade de Caçapava do Sul) e manganês ficaram dentro de níveis aceitáveis para a piscicultura, mas a turbidez ocasionalmente elevou-se a níveis fora dessa faixa aceitável e os piscicultores devem ter algum mecanismo para reduzi-los. Em conclusão, de forma geral a qualidade da água do Rio Grande do Sul pode ser considerada adequada para a aquicultura, mas os piscicultores devem conhecer métodos para corrigir a turbidez, como a utilização de sulfato de cálcio.

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The effect of water pH on the incubation and larviculture of curimbatá Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae)

Cited by 12 publications

References 27 publications

CO2 induced seawater acidification impacts survival and development of European eel embryos

CO2 induced seawater acidification impacts survival and development of European eel embryos

Importance of a turbulent river section below a giant waterfall for fish spawning: Indications from drift and dispersion patterns of early life stages

Freshwater parameters in the state of Rio Grande do Sul, southern Brazil, and their influence on fish distribution and aquaculture

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