Overview
This source page is a mechanical bulk-ingest record for a PDF in the research-pulls corpus. It preserves source-level identity, routeable product/analyte scope, and exact extracted numeric lines for later human or fresh-context audit. It does not derive HMTc thresholds, percentiles, or brand-by-brand comparisons.
Key numbers
The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:
- (jaraqui), and Schizodon spp. (aracu). Table S1, Supplementary Materials, presents the
- tic evaluations are reported in the Supplementary Materials (Table S2). A One-Dimensional
- all applicable cases, a predetermined type I error of 5% (α = 0.05) was assumed. This
- in fish, some studies did not report such a variable (n = 10). Weight was reported in only
- natural and hydroelectric ecosystems (n = 42) than studies that acquired the specimens in
- local markets (n = 4). Only 12 studies provided data on the limnological variables of the
- studied area. Most studies determined only mercury concentrations (n = 36), while only
- World Health Organization (WHO) guideline of 0.5 mg/kg wet weight (44) was the most
- frequently used reference (n = 22) to assess the maximum permissible mercury concentra-
- tion in fish. The second most common reference was Brazilian legislation (n = 14), which
- sets a limit of 0.5 mg/kg wet weight of mercury for non-carnivorous fish and 1.0 mg/kg
- 0.3 mg/kg wet weight in fish (46). Only four studies reported finding no values above
- from 14% to nearly 100%. Additionally, 11 studies did not report whether the mercury
- Based on a multiple regression, the variables sampling location (9.3%, p < 0.0001),
- together explained 28% (p < 0.0001) of the mercury concentrations in the muscle of fish
- the relationship was negative for non-carnivorous fish (Figure 6). Table S4 shows the mean
- understand Hg concentrations in fish is provided in the Supplementary Materials (Table S5).
- values (97.5%) were above the recommended limits (Table S3).
- in fish (0.5 mg/kg of mercury for non-predatory and 1.0 mg/kg for predatory fish; ANVISA,
- non-carnivore genus of fish species examined in the Amazon basin. Table S1: Descriptors used in
- the database search for the six fish species of interest in the Amazon basin. Table S2: Values of the
- parameters used for risk assessment Monte Carlo simulations. Table S3: Monte Carlo simulation
- values for estimated weekly intake (EQI) of Hg through fish ingestion (quantiles 2.5 to 97.5 %
- social groups and feeding habits of the fish (carnivore or non-carnivore). Table S4: Mean mercury
- extracted from the studies. Table S5: Checklist table with suggested essential items for studies aimed
-
- U.S. Environmental Protection Agency (USEPA). National Recommended Water Quality Criteria: Human Health Criteria Table.
-
- Bilodeau, F.; Therrien, J.; Schetagne, R. Intensity and duration of effects of impoundment on mercury levels in fishes of
- ~:text=O%20tucunar%C3%A9%20%C3%A9%20originalmente%20uma,1990,%20em%20v%C3%A1rias%20regi%C3%B5es%20
Methods (brief)
- Semaprochilodus spp., and Schizodon spp.) in the Web of Science (Clarivate Analytics) and
- spp. (pescada), and three non-carnivorous, Leporinus spp. (piau), Semaprochilodus spp.
- fish or muscle tissue samples that have undergone research-induced changes (e.g., analysis
- carnivore), and trophic guild (iii) sample number, (iv) mean and standard deviation of total
- the aquatic ecosystem where fish were collected), and (viii) geographic coordinates of the
- cant differences in mercury levels between fish sampled in different seasons (33). Due to
- this and the lack of precise information on the flooding periods during which the samples
- were collected, the influence of the flooding pulse on Hg concentrations in fish was not
- The data extracted from the studies (mean, standard deviation, and sample size) were
- An ANOVA (aov function, base package, (37)) was used to identify effects of sample
- occurred in 1990 and the last in 2021. Some studies collected samples over years or across
- Plagioscion spp., Leporinus spp., Semaprochilodus spp., and Schizodon spp.) in the Amazon basin.
- to check in the materials and methods if the samples had undergone any drying process
- detection technique most used to determine mercury concentrations was Cold Vapor
- Atomic Absorption Spectrometry (n = 31, Figure S2).
- and Plagioscion spp., Leporinus spp., Semaprochilodus spp., and Schizodon spp.) of fish examined in the
- mercury concentration values, standard deviation, and number of samples for the six fish
- (Those who eat jaraqui—Semaprochilodus spp.—don’t leave here), highlighting the cultural
Implications
This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.
Wiki pages this source may touch
- Fish — marine, predatory (tuna, swordfish, shark, king mackerel)
- Fish — marine, non-predatory (sardines, anchovies, salmon, cod)
- Shellfish (shrimp, crab, lobster, clams, oysters, mussels)
- Mercury
- Mercury
- Cadmium
Verification notes
- Identity check: DOI, raw handle, candidate cite-key, and SHA-256 were compared against existing
wiki/sources/pages before creation. - Full-PDF read:
pdftotext -layoutwas run on the full PDF twice; extracted text hashes matched before the page was written. - Numeric verification: numeric/table-bearing lines were selected mechanically from the verified extraction and preserved without unit conversion or rounding.
- Brand firewall: the worker skips PDFs when extracted numeric lines appear brand/manufacturer-sensitive; this page contains category-level or species-level evidence only.
- HMTc firewall: no threshold, percentile, pass/fail, clean/dirty, or certification math is stated.
Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.