Evidence map›Paper›PMID 32020255›Full record

ArticleArchives of environmental contamination and toxicology2020

Trace Elements in Crustaceans, Mollusks and Fish in the Kenyan Part of Lake Victoria: Bioaccumulation, Bioindication and Health Risk Analysis.

James Omondi Outa, Chrispin O Kowenje, Annemariè Avenant-Oldewage, Franz Jirsa

Open access · hybridAbstract read
In one paragraph

Article in Archives of environmental contamination and toxicology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. A global synthesis of ecosystem services provided and disrupted by freshwater bivalve molluscs.Biological reviews of the Cambridge Philosophical Society · 2022
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Biology · 2023
    Article
  6. Toxics · 2023
    Article
  7. Integrated characterisation ofInternational journal for parasitology. Parasites and wildlife · 2023
    Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 3 countries.

James Omondi OutaDepartment of Limnology and Bio-Oceanography, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria.
Chrispin O KowenjeDepartment of Chemistry, Maseno University, P.O. Box 333, Maseno, 40105, Kenya.
Annemariè Avenant-OldewageDepartment of Zoology, University of Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa.
Franz JirsaInstitute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria. franz.jirsa@univie.ac.at.ORCID http://orcid.org/0000-0002-4926-3261
University of Vienna · ATMaseno University · KEUniversity of Johannesburg · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This is the first comprehensive report on the accumulation of Cr, Ni, As, and Ag in the fish species Nile tilapia Oreochromis niloticus and Nile perch Lates niloticus from Lake Victoria, complemented with recent data on Cu, Zn, Cd, and Pb. This also is the first report on Cr, Ni, As, and Ag levels in invertebrates: the shrimp Caridina nilotica, gastropod Pila ovata, and bivalve Mutela bourguignati. The study was conducted at five sites in the Kenyan part of Lake Victoria: four sites in Winam Gulf influenced by various anthropogenic pressures, including a site near Kisumu City, and one in the main lake, with lesser direct anthropogenic influence. Apart from Cu and Ag, which were highest in O. niloticus liver, the invertebrates had higher levels of trace elements than fish. Contamination of the gulf with trace elements was best mirrored by the invertebrates, whose mobility is limited; they accumulated Cr, Cd, Ag, and Pb corresponding to the levels in the surface sediment. The accumulation of trace elements in fish species and their bioindicative potential corresponded to their habitats and feeding behaviour. The tissue contents of most trace elements were higher in the inshore-dwelling, omnivorous O. niloticus compared to the pelagic, piscivorous L. niloticus. Cu (465 ± 689 mg/kg dw) and Ag (3.45 ± 1.49 mg/kg dw) in the liver of O. niloticus were up to 10 and 119 times higher than in L. niloticus, respectively. Oreochromis niloticus therefore has bioindicative potential for Cu and Ag contamination. Both the invertebrates and fish showed positive correlations between Cu and Ag concentrations, indicating similar source and/or uptake route. The target hazard quotients (THQ) show that there is no human health risk associated with the consumption of these fish. However, the levels of Zn, Cd, and Pb in P. ovata surpassed maximum food safety limits and are hence potentially unsafe for human consumption.

Indexed as

BioaccumulationAnimalsAquatic OrganismsCichlidsCrustaceaEnvironmental BiomarkersEnvironmental MonitoringHumansKenyaLakesMetals, HeavyMolluscaPerchesRisk AssessmentSeafoodTrace ElementsEnvironmental BiomarkersMetals, HeavyTrace ElementsWater Pollutants, Chemical

Identifiers

PMID32020255
PMCPMC7136317
OpenAlexW3004542773

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.