Acute salinity tolerance of juvenile platy,
            <i>Xiphophorus maculatus</i>

Valente, Wanderson; Cardoso, Alex Júnio da Silva; Martins, Maria Tatiana Soares; Filho, Sebastião Martins; Zuanon, Jener Alexandre Sampaio

doi:10.1111/are.15277

Cited by 4 publications

(1 citation statement)

References 53 publications

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“…Thus, some secondary species as blue panchax ( Aplocheilus panchax ) or sailfin molly ( Poecilia latipinna ) showed rather low salinity tolerance (10 ppt). Even southern platyfish ( Xiphophorus maculatus ), which has been typically considered as a euryhaline fish (Schreibman & Kallman, 1966), showed the typical osmoregulatory capacity of stenohaline species (Valente et al., 2021). This possibly also applies to many neotropical cichlids, with numerous species confined to low conductivity streams (Winemiller et al., 2008).…”

Section: Discussionmentioning

confidence: 99%

Myers' divisions revisited: Contemporary evidence for distinct trait differences among global inland fishes

Cano‐Barbacil,

Olden,

García‐Berthou

2024

Fish and Fisheries

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Eighty years ago, George S. Myers classified inland fishes in three divisions (primary, secondary and peripheral) based on their salinity tolerance and eco‐evolutionary history. Although this classification has been followed by many fish studies, it has also received considerable criticism. Here, we aim to test for differences in salinity and thermal tolerance, species traits and distribution patterns among the three divisions using data for about 21,000 species. We found that primary fishes have much less salinity tolerance than secondary and peripheral species, with some secondary fishes displaying the highest tolerances (>100 ppt). We also provide, for the first time, evidence of significant phylogenetic signal of salinity tolerance, comparable in magnitude to conservative traits, and show that studied peripheral and secondary species have maintained or even developed salinity tolerance, in contrast to primary fishes. Although peripheral fishes are the most different, and despite the large variability observed within some families, primary and secondary species also show differences in morphology and life‐history traits. The distribution ranges and genetic diversity of primary and secondary fish divisions are similar and differ from peripheral species, suggesting that although there is evidence of oceanic dispersal of a few secondary fishes at evolutionary time scales, it is a rare contemporary phenomenon. Importantly, a few findings outlined in this study, namely, differences in salinity tolerance, rely on limited data. Thus, we urge for additional empirical research on the salinity tolerance of freshwater fish, which remains largely unexplored, to help clarify differences among and within clades.

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Section: Discussionmentioning

confidence: 99%

Myers' divisions revisited: Contemporary evidence for distinct trait differences among global inland fishes

Cano‐Barbacil,

Olden,

García‐Berthou

2024

Fish and Fisheries

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Tolerance to salinity and its effect on development of velifera molly Poecilia velifera (Regan 1914)

Cipriano

Luz

Lorenzini

et al. 2021

Journal of Applied Aquaculture

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Toxicity, physiological, histopathological, handling, growth and antiparasitic effects of the sodium chloride (salt) in the freshwater fish aquaculture

Tavares‐Dias¹

2021

Aquaculture Research

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This paper provides the currently available knowledge in the literature regarding the use of sodium chloride (NaCl) in freshwater fish aquaculture and aquaria as related to toxicity, growth performance, transportation, physiology, immunity, histomorphology and antiparasitic treatment. This review assessed and discussed all of these factors, as well as the potential strategies available to be used in fish farming. Acute toxicity to NaCl varies widely among fish species (3.5-150.0 g L −1 ) depending on some environment factors, and many fish species are sensitive to concentrations near those required for their development, growth or for controlling and treating parasites. Acute exposure to NaCl may lead to mortality in different fish species, cause changes in feeding and swimming behaviour, as well as in growth performance and histomorphology of gills, while sublethal concentrations are less harmful. To reduce stress during transport of freshwater fish, concentrations of 1.0-10.0 g L −1 of NaCl in water have been tested for some fish species. Data have shown that survival, body growth of fish, food intake and stimulation of food conversion are affected by the NaCl concentration.Moreover, the effects of NaCl on the immune system, physiology and behaviour must also be considered. Sodium chloride may be a chemotherapeutic for controlling and treating ectoparasite diseases in farmed freshwater fish because of its effectiveness and low cost, but this compound may not be used in high or extreme toxic concentrations, since the maximum tolerance may be near the therapeutic doses. Therefore, this chemical product should be used with parsimony in fish farming. K E Y W O R D Saquaculture, blood, fish, growth, parasites, treatment | ACUTE TOXICITY OF NaCl IN FRESHWATER FISH SPECIESKnowledge on the tolerance limits of freshwater fish to NaCl is of ecological significance in assessing fish distribution and their impact on ecosystems, as well as for management practices in fish farms.The most common laboratory measure of NaCl tolerance is the concentration that is lethal to 50% of individuals (LC 50 ) over periods of 24-96 h. Such determinations are experimental and establish a causal link between the salinity and mortality. Some species of freshwater fish tolerate high concentrations of NaCl for longer periods when compared with other freshwater fish species (Table 1), and concentrations may be near the lethal concentration for the fish species. However, they lack consideration of other changes in the water quality that may occur with an increased salinity. Thus, it is necessary to know beforehand the mean lethal concentration (LC 50 ) for each species of fish as well as the environmental conditions for exposure to NaCl.How to cite this article: Tavares-Dias, M. (2022). Toxicity, physiological, histopathological, handling, growth and antiparasitic effects of the sodium chloride (salt) in the freshwater fish aquaculture.

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Acute salinity tolerance of juvenile platy, Xiphophorus maculatus

Cited by 4 publications

References 53 publications

Myers' divisions revisited: Contemporary evidence for distinct trait differences among global inland fishes

Myers' divisions revisited: Contemporary evidence for distinct trait differences among global inland fishes

Tolerance to salinity and its effect on development of velifera molly Poecilia velifera (Regan 1914)

Toxicity, physiological, histopathological, handling, growth and antiparasitic effects of the sodium chloride (salt) in the freshwater fish aquaculture

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