Evidence map›Paper›PMID 42250084›Full record

ArticleEnvironmental monitoring and assessment2026

Effects of thermal regime variability on adult rainbow trout (Oncorhynchus mykiss) mortality in Afromontane river systems.

Blessing Mugaviri, Alton Aliki, Bianca Nyamupingidza, Tongayi Mwedzi, Beaven Utete, Taurai Bere

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Article in Environmental monitoring and assessment, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
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0citing papers in PubMed
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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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

6 authors.

Blessing MugaviriDepartment of Wildlife Ecology and Conservation, Chinhoyi University of Technology, Chinhoyi, Zimbabwe. mugaviriblessing@gmail.com.
Alton AlikiDepartment of Wildlife Ecology and Conservation, Chinhoyi University of Technology, Chinhoyi, Zimbabwe.
Bianca NyamupingidzaDepartment of Wildlife Ecology and Conservation, Chinhoyi University of Technology, Chinhoyi, Zimbabwe.
Tongayi MwedziDepartment of Wildlife Ecology and Conservation, Chinhoyi University of Technology, Chinhoyi, Zimbabwe.
Beaven UteteDepartment of Wildlife Ecology and Conservation, Chinhoyi University of Technology, Chinhoyi, Zimbabwe.
Taurai BereDepartment of Wildlife Ecology and Conservation, Chinhoyi University of Technology, Chinhoyi, Zimbabwe.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Water temperature variability in river systems is a significant environmental concern. This study aimed to assess the effects of thermal regime variability on adult Oncorhynchus mykiss mortality in Afromontane river systems; using time series data spanning from 1994 to 2024. The objectives of the study were to analyze temporal and seasonal trends in water temperature (1994-2024) in Nyanga National Park, Zimbabwe, evaluate how temperature variability relates to adult O. mykiss mortality, and identify critical thermal thresholds that increase mortality. The research used both secondary and primary data. Time series approach with a 5-year moving average analyzed temperature trends, while correlation and regression assessed the relationship between water temperature and rainbow trout mortality, and threshold analysis identified critical temperature limits increasing adult O. mykiss mortality. Seasonal comparisons revealed marked differences in both water temperature and mortality of O. mykiss. Mean water temperature was significantly higher in summer (20.13 ± 0.10 °C) than in winter (13.30 ± 0.13 °C; Welch's t-test, t = 17.91, p < 0.01; n = 93 per season). Similarly, mean mortality was substantially greater during summer (1272 ± 44) compared to winter (229 ± 27), with this difference also highly significant (Welch's t-test, t = 13.17, p < 0.001). Correlation and regression analyses revealed a strong positive association between temperature anomalies and mortality anomalies (ρ = 0.713; R

Indexed as

Environmental MonitoringOncorhynchus mykissRiversTemperatureAnimalsMortalitySeasonsZimbabweAfromontaneCritical thermal thresholdEastern HighlandsFish mortalityWater temperature variability

Identifiers

PMID42250084
PMCPMC13242468

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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.