[OANNES Foro] Microplastics and the functional traits of fishes: A global meta-analysis

[Mario Cabrejos]

Glob Change Biol. 2021;27:2645–2655

DOI: 10.1111/gcb.15570



*Microplastics and the functional traits of fishes: A global meta-analysis*

Martina Salerno1 | Manuel Berlino1,2 | M. Cristina Mangano3 | Gianluca Sarà1

1 Dipartimento di Scienze della Terra e del Mare (DiSTeM), Università degli
Studi di Palermo, Palermo, Italy 2 National Institute of Oceanography and
Applied Geophysics – OGS, Trieste, Italy 3 Stazione Zoologica Anton Dohrn,
Department of Integrative Marine Ecology (EMI), Sicily Marine Centre,
Palermo, Italy





*Abstract *



Over the years, concern about the effects of microplastics has grown. Here,
we answered the main question “What are the impacts of microplastics on the
functional traits of fish species?” through a meta-analysis. The general
impact of microplastic exposure on the functional traits of fishes and
specifically on eight variables, namely, behaviour, development, fecundity,
feeding, growth, health, hatching and survival was explored. Subgroup
analyses were performed to detect correlations between the impact of
microplastics and the following factors: species, life stage, habitat,
water column habitat, day of exposure to microplastics and microplastic
size, type and shape. A meta-regression analysis allowed understanding the
correlation between the impact of microplastics and the size of organisms.
Generally, microplastics have a negative effect on the functional traits of
fishes. Feeding and behaviour, followed by growth showed the greatest
impact. Among the subgroup analysis, four of the eight variables considered
showed a significant difference between groups: species, life stage,
microplastic shape and days of exposure to microplastics. Depending on
their life stage, organisms may be more sensitive to microplastic
pollution. Changes in growth rates, development of early life stage and
behavioural patterns in fishes may have a negative effect on the structure
and functions of aquatic ecosystem in the long term and consequently affect
the ability of aquatic ecosystems to provide ecosystem services and sustain
human communities

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