TY  - GEN
A1  - Drago, Claudia
A1  - Weithoff, Guntram
T1  - Variable Fitness Response of Two Rotifer Species Exposed to Microplastics Particles
BT  - The Role of Food Quantity and Quality
T2  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - Plastic pollution is an increasing environmental problem, but a comprehensive understanding of its effect in the environment is still missing. The wide variety of size, shape, and polymer composition of plastics impedes an adequate risk assessment. We investigated the effect of differently sized polystyrene beads (1-, 3-, 6-µm; PS) and polyamide fragments (5–25 µm, PA) and non-plastics items such as silica beads (3-µm, SiO2) on the population growth, reproduction (egg ratio), and survival of two common aquatic micro invertebrates: the rotifer species Brachionus calyciflorus and Brachionus fernandoi. The MPs were combined with food quantity, limiting and saturating food concentration, and with food of different quality. We found variable fitness responses with a significant effect of 3-µm PS on the population growth rate in both rotifer species with respect to food quantity. An interaction between the food quality and the MPs treatments was found in the reproduction of B. calyciflorus. PA and SiO2 beads had no effect on fitness response. This study provides further evidence of the indirect effect of MPs in planktonic rotifers and the importance of testing different environmental conditions that could influence the effect of MPs.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1248 
KW  - microplastics
KW  - population growth rate
KW  - polystyrene
KW  - polyamide
KW  - silica beads
KW  - fitness response
KW  - rotifers
KW  - Brachionus fernandoi
KW  - Brachionus calyciflorus
KW  - egg ratio
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-552615
SN  - 1866-8372
IS  - 1248
ER  - 
TY  - JOUR
A1  - Drago, Claudia
A1  - Weithoff, Guntram
T1  - Variable Fitness Response of Two Rotifer Species Exposed to Microplastics Particles
BT  - The Role of Food Quantity and Quality
JF  - Toxics
N2  - Plastic pollution is an increasing environmental problem, but a comprehensive understanding of its effect in the environment is still missing. The wide variety of size, shape, and polymer composition of plastics impedes an adequate risk assessment. We investigated the effect of differently sized polystyrene beads (1-, 3-, 6-µm; PS) and polyamide fragments (5–25 µm, PA) and non-plastics items such as silica beads (3-µm, SiO2) on the population growth, reproduction (egg ratio), and survival of two common aquatic micro invertebrates: the rotifer species Brachionus calyciflorus and Brachionus fernandoi. The MPs were combined with food quantity, limiting and saturating food concentration, and with food of different quality. We found variable fitness responses with a significant effect of 3-µm PS on the population growth rate in both rotifer species with respect to food quantity. An interaction between the food quality and the MPs treatments was found in the reproduction of B. calyciflorus. PA and SiO2 beads had no effect on fitness response. This study provides further evidence of the indirect effect of MPs in planktonic rotifers and the importance of testing different environmental conditions that could influence the effect of MPs.
KW  - microplastics
KW  - population growth rate
KW  - polystyrene
KW  - polyamide
KW  - silica beads
KW  - fitness response
KW  - rotifers
KW  - Brachionus fernandoi
KW  - Brachionus calyciflorus
KW  - egg ratio
Y1  - 2021
U6  - https://doi.org/10.3390/toxics9110305
SN  - 2305-6304
VL  - 9
IS  - 11
PB  - MDPI
CY  - Basel
ER  -