Lead-induced metabolic imbalances and feeding alterations in juvenile fathead minnows (Pimephales promelas)

Weber, Daniel N.

doi:10.1002/(sici)1098-2256(1996)11:1<45::aid-tox7>3.0.co;2-9

Cited by 10 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Evidence for such effects in aquatic environments has been observed, for example, with episodic changes in pH and aluminum concentrations [53]. Subtle changes in behavior may alter future population structure by affecting reproductive success, feeding efficiency, or overall social activity [4,54–59]. The ability to predict the direction and the magnitude of these changes will be important in designing solutions to the degradation of our watersheds.…”

Section: Discussionmentioning

confidence: 99%

Lead effects on the predictability of reproductive behavior in fathead minnows (Pimephales promelas): A mathematical model

Alados

Weber

1999

Enviro Toxic and Chemistry

Self Cite

View full text Add to dashboard Cite

Lead (Pb) has been shown to affect the behavior of a wide variety of vertebrates, including fish, amphibians, and mammals. This article re-examines previous data on the effect of short-term, sublethal levels of waterborne Pb on the reproductive behavior of fathead minnows (Pimephales promelas). Previous research has found that Pb decreased the time spent in displaying specific reproductive behaviors in male minnows. Because each activity performed within a sequence depends upon previous parts of the sequence, the reproductive behavior of fish is not randomly distributed but is presented as a long-range self-similar correlation. By treating these data as a fractal dimension, it is now possible to determine changes in the long-term correlation of different behavioral sequences involved in nest maintenance owing to Pb exposure (0.5 ppm Pb as Pb acetate), both before and after adult males attain reproductive maturity. We hypothesized that the scaling exponent of this fluctuation varies in relation with environmental contaminants. Known Pb-induced changes in hormonal activity may account for changes in observed reproductive and nest maintenance behaviors. Pb-exposed fish exhibited higher levels of predictability (less complexity) in their behavioral sequences, i.e., they demonstrated an increase in the scaling parameter of the fluctuation a. However, if Pb was introduced after sexual maturity was observed, there was no significant difference in the scaling component a. Thus, the use of fractal dimension may provide a useful tool to analyze the effects of environmental contaminants and other stresses.

show abstract

Section: Discussionmentioning

confidence: 99%

Lead effects on the predictability of reproductive behavior in fathead minnows (Pimephales promelas): A mathematical model

Alados

Weber

1999

Enviro Toxic and Chemistry

Self Cite

View full text Add to dashboard Cite

show abstract

“…Fish food was purchased based on common use in standardized aquatic laboratory experiments with P. promelas or Hyalella azteca (Table 1). For example, Tetramin Tropical Flakes (Weber, 1996;Weil et al, 2016), freeze-dried brine shrimp (Denny, 1987;Erickson et al, 2019;Stone et al, 2018), frozen brine shrimp (Denny, 1987;DeQuattro et al, 2015), and freezedried bloodworms (Shappell et al, 2018) are commonly used in basic and applied aquatic research and during routine evaluations of ambient water and sediment quality for regulatory compliance (US Environmental Protection Agency [USEPA], 2000[USEPA], , 2002. In the present study, Tetramin Tropical Flakes were purchased from Tetra.…”

Section: Methodsmentioning

confidence: 99%

Occurrence of Per‐ and Polyfluoroalkyl Substance Contamination of Food Sources and Aquaculture Organisms Used in Aquatic Laboratory Experiments

Rushing

Schmokel

Brooks

et al. 2023

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

When performing basic and translational laboratory studies with aquatic organisms, particularly for bioaccumulation, toxicity, or biotransformation experiments, it is imperative to control the route and dose of exposure. Contamination of feed and the organisms prior to study could alter the results of an experiment. Furthermore, if organisms not exposed in the lab are used for quality assurance/quality control, then blank levels, method detection limits, and limits of quantitation can be affected. In an effort to determine the magnitude of this potential issue for exposure studies involving Pimephales promelas, we analyzed a suite of 24 per-and polyfluoroalkyl substances (PFAS) in four types of feed from three different companies and in organisms from five aquaculture facilities. Contamination with PFAS was found in all types of materials and organisms from all aquaculture farms. The most frequently detected PFAS in fish feed and aquaculture fathead minnows were perfluorocarboxylic acids and perfluorooctane sulfonate (PFOS). Concentrations of total and individual PFAS in feed ranged from nondetect to 76 ng/g and from nondetect to 60 ng/g, respectively. Fathead minnows were contaminated with PFOS and perfluorohexane sulfonate as well as several perflourocarboxylic acids. Concentrations of total and individual PFAS ranged from 1.4 to 351 ng/g and from nondetect to 328 ng/g, respectively. The PFOS measured in food was primarily the linear isomer, consistent with greater bioaccumulation of that isomer in organisms raised as fish food. Future studies are necessary to define the extent of PFAS contamination in aquatic culture facilities and aquaculture production operations.

show abstract

“…Behavior provides a link between an animal's internal physiology and external environment [30]. Studies in the CCR-contaminated site have focused on behaviors that may affect predation risk.…”

Section: Behaviormentioning

confidence: 99%

Integrating Individual-Based Indices of Contaminant Effects

Rowe

Hopkins

Congdon

2001

The Scientific World JOURNAL

View full text Add to dashboard Cite

Habitat contamination can alter numerous biological processes in individual organisms. Examining multiple individual-level responses in an integrative fashion is necessary to understand how individual health or fitness reflects environmental contamination. Here we provide an example of such an integrated perspective based upon recent studies of an amphibian (the bullfrog, Rana catesbeiana) that experiences several, disparate changes when larval development occurs in a trace element–contaminated habitat. First, we present an overview of studies focused on specific responses of individuals collected from, or transplanted into, a habitat contaminated by coal combustion residues (CCR). These studies have reported morphological, behavioral, and physiological modifications to individuals chronically interacting with sediments in the CCR-contaminated site. Morphological abnormalities in the oral and tail regions in contaminant-exposed individuals influenced other properties such as grazing, growth, and swimming performance. Behavioral changes in swimming activities and responses to stimuli appear to influence predation risk in the contaminant-exposed population. Significant changes in bioenergetics in the contaminated habitat, evident as abnormally high energetic expenditures for survival (maintenance) costs, may ultimately influence production pathways (growth, energy storage) in individuals. We then present a conceptual model to examine how interactions among the affected systems (morphological, behavioral, physiological) may ultimately bring about more severe effects than would be predicted if the responses were considered in isolation. A complex interplay among simultaneously occurring biological changes emerges in which multiple, sublethal effects ultimately can translate into reductions in larval or juvenile survival, and thus reduced recruitment of juveniles into the population. In systems where individuals are exposed to low concentrations of contaminants for long periods of time, research focused on one or few sublethal responses could substantially underestimate overall effects on individuals. We suggest that investigators adopt a more integrated perspective on contaminant-induced biological changes so that studies of individual-based effects can be better integrated into analyses of mechanisms of population change.

show abstract

Lead-induced metabolic imbalances and feeding alterations in juvenile fathead minnows (Pimephales promelas)

Cited by 10 publications

References 15 publications

Lead effects on the predictability of reproductive behavior in fathead minnows (Pimephales promelas): A mathematical model

Lead effects on the predictability of reproductive behavior in fathead minnows (Pimephales promelas): A mathematical model

Occurrence of Per‐ and Polyfluoroalkyl Substance Contamination of Food Sources and Aquaculture Organisms Used in Aquatic Laboratory Experiments

Integrating Individual-Based Indices of Contaminant Effects

Contact Info

Product

Resources

About