2016
DOI: 10.1590/1519-6984.06714
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Effects of water-soluble fraction of petroleum on growth and prey consumption of juvenile Hoplias aff. malabaricus (Osteichthyes: Erythrinidae)

Abstract: The influence of the water-soluble fraction of petroleum (WSF) on prey consumption and growth of juvenile trahira Hoplias aff. malabaricus was investigated. Juveniles were submitted to either WSF or Control treatment over 28 days, and jewel tetra Hyphessobrycon eques adults were offered daily as prey for each predator. Total prey consumption ranged from 16 to 86 individuals. Despite the initially lower prey consumption under WSF exposure, there were no significant differences in overall feeding rates between t… Show more

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Cited by 4 publications
(3 citation statements)
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References 39 publications
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“…By using the same WSF as those adopted in the present work, we previously detected only mild effects on growth and prey consumption of juvenile H. aff. malabaricus and attributed the resistance and/or the capacity of excretion of components metabolized by the liver of the top-predator as reasonable mechanisms to explain those findings (Santos et al, 2016). But the high metabolic and hydrocarbon metabolites excretion rates of fish (Mason, 1945) may explain the low cellular and molecular damage found in H. aff.…”
Section: Discussionmentioning
confidence: 99%
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“…By using the same WSF as those adopted in the present work, we previously detected only mild effects on growth and prey consumption of juvenile H. aff. malabaricus and attributed the resistance and/or the capacity of excretion of components metabolized by the liver of the top-predator as reasonable mechanisms to explain those findings (Santos et al, 2016). But the high metabolic and hydrocarbon metabolites excretion rates of fish (Mason, 1945) may explain the low cellular and molecular damage found in H. aff.…”
Section: Discussionmentioning
confidence: 99%
“…The heavy crude oil (API 17º; Trevisan et al, 2009) was obtained from the Jubarte oil field situated at 77 km off the southeast of Brazil, which composition of benzene, ethylbenzene, toluene and xylene (BTEX analysis) are shown in Table 1. WSF preparation followed Anderson et al (1974) with modifications (for details, see Santos et al, 2016). Modifications were based on a previous work (Weber et al, 2013), which used the relation of Jubarte crude oil:water (1:4 w.v -1 ) and proved to be not lethal for a much more sensible organism (amphipod, Crustacea; LC 50(72 h) = 51% WSF) at the level of 17.6% WSF.…”
Section: Preparation Of Water Soluble Fraction (Wsf)mentioning
confidence: 99%
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