Can small-bodied Daphnia control Raphidiopsis raciborskii in eutrophic tropical lakes? A mesocosm experiment

Raphidiopsis raciborskii is being considered an expanding, invasive species all over the world. It is a potentially toxin producer cyanobacterium and form blooms specially in (sub)tropical lakes, causing concern to public health. Thus, controlling such phenomena are of vital importance. To test the...

Full description

Saved in:
Bibliographic Details
Published in:Environmental science and pollution research international 2020-10, Vol.27 (28), p.35459-35473
Main Authors: Ferrão-Filho, Aloysio S., Pereira, Uanderson J., Vilar, Mauro C.P., de Magalhães, Leonardo, Marinho, Marcelo M.
Format: Article
Language:English
Subjects:
Animals
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biomass
Cyanobacteria
Cylindrospermopsis
Daphnia
Earth and Environmental Science
Ecosystem
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental science
Eutrophic lakes
Eutrophication
Fish
Hypotheses
Introduced species
Invasive species
Lakes
Public health
Raphidiopsis raciborskii
Research Article
Saxitoxin
Toxins
Tropical lakes
Waste Water Technology
Water Management
Water Pollution Control
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Raphidiopsis raciborskii is being considered an expanding, invasive species all over the world. It is a potentially toxin producer cyanobacterium and form blooms specially in (sub)tropical lakes, causing concern to public health. Thus, controlling such phenomena are of vital importance. To test the hypothesis that a tropical clone of Daphnia laevis is able to reduce the biomass of R. raciborskii , we performed a mesocosm experiment simulating a bloom of this cyanobacterium in field conditions and exposing it to ecologically relevant densities of daphniids. In addition, we tested the hypothesis that omnivorous fish would be able to exert a top-down effect on Daphnia , decreasing the effectiveness of this control. We used treatments with (10 and 20 Daphnia L -1 ) or without Daphnia and fish (3 per mesocosm). Daphnia was able to significantly reduce the biomass of R. raciborskii only at the highest density tested. Fish had low effect on Daphnia biomass, but it is suggested that nutrient recycling by fish might have contributed to the higher R. raciborskii biomass in fish treatments. This is the first evidence of Daphnia control over saxitoxin-producing cyanobacteria in a tropical ecosystem.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-020-09737-6