Effects of plant oligosaccharides derived from dragon fruit on growth, reproduction and survival of freshwater crustacean Daphnia magna

2019 ◽  
Vol 51 (1) ◽  
pp. 51-57
Author(s):  
Saranya Peerakietkhajorn ◽  
Pattamanat Damnui ◽  
Santad Wichienchot ◽  
Vachira Lheknim
Keyword(s):  
Daphnia Magna ◽  
Dragon Fruit ◽  
Freshwater Crustacean ◽  
Plant Oligosaccharides

The role of interactions between individual animals in the response to heat stress in the freshwater crustacean Daphnia magna

2005 ◽  
Vol 36 (2) ◽  
pp. 109-114
Author(s):  
T. B. Kalinnikova ◽  
I. A. Krasnoperova ◽  
T. M. Gainutdinov ◽  
S. V. Sadykova ◽  
M. Kh. Gainutdinov
Keyword(s):  
Heat Stress ◽  
Daphnia Magna ◽  
Freshwater Crustacean

scholarly journals Testing zooplankton secondary production models against Daphnia magna growth

2012 ◽  
Vol 69 (3) ◽  
pp. 421-428 ◽  
Author(s):  
May Gómez ◽  
Ico Martínez ◽  
Ismael Mayo ◽  
José Miguel Morales ◽  
Angelo Santana ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Population Ecology ◽  
Growth Rates ◽  
Secondary Production ◽  
Time Course ◽  
Dry Mass ◽  
Production Rates ◽  
Marine Copepod ◽  
Production Models ◽  
Freshwater Crustacean

Abstract Gómez, M., Martínez, I., Mayo, I., Morales, J. M., Santana, A., and Packard, T. T. 2012. Testing zooplankton secondary production models against Daphnia magna growth. – ICES Journal of Marine Science, 69: 421–428. Modelling secondary production rates in the zooplankton is essential for population ecology studies, but assessing these rates is difficult and rarely done. Here, five secondary production models are tested by measuring Daphnia magna growth. To provide a range of growth rates, Daphnia were cultured under three different nutrition regimes (yeast, cornflour, and phytoplankton). Length and biomass were monitored daily in three simple time-course experiments to provide the growth rates, which ranged from 0.11 to 0.30 d–1 with secondary production rates of 350–643 µg dry mass d−1. Secondary production was predicted best by the freshwater crustacean-based model of Stockwell and Johannsson (1997). Marine copepod-based marine models were totally unsuitable.

scholarly journals Long Term Exposure to Virgin and Recycled LDPE Microplastics Induced Minor Effects in the Freshwater and Terrestrial Crustaceans Daphnia magna and Porcellio scaber

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 771
Author(s):  
Anita Jemec Kokalj ◽  
Andraž Dolar ◽  
Jelizaveta Titova ◽  
Meeri Visnapuu ◽  
Luka Škrlep ◽  
...  
Keyword(s):  
Immune Response ◽  
Daphnia Magna ◽  
Total Lipid Content ◽  
Mechanical Recycling ◽  
Porcellio Scaber ◽  
Soil P ◽  
Freshwater Crustacean ◽  
Exposure Levels ◽  
Recycled Plastics

The effects of microplastics (MP) are extensively studied, yet hazard data from long-term exposure studies are scarce. Moreover, for sustainable circular use in the future, knowledge on the biological impact of recycled plastics is essential. The aim of this study was to provide long-term toxicity data of virgin vs recycled (mechanical recycling) low density polyethylene (LDPE) for two commonly used ecotoxicity models, the freshwater crustacean Daphnia magna and the terrestrial crustacean Porcellio scaber. LDPE MP was tested as fragments of 39.8 ± 8.82 µm (virgin) and 205 ± 144 µm (recycled) at chronic exposure levels of 1–100 mg LDPE/L (D. magna) and 0.2–15 g LDPE/kg soil (P. scaber). Mortality, reproduction, body length, total lipid content, feeding and immune response were evaluated. With the exception of very low inconsistent offspring mortality at 10 mg/L and 100 mg/L of recycled LDPE, no MP exposure-related adverse effects were recorded for D. magna. For P. scaber, increased feeding on non-contaminated leaves was observed for virgin LDPE at 5 g/kg and 15 g/kg. In addition, both LDPE induced a slight immune response at 5 g/kg and 15 g/kg with more parameters altered for virgin LDPE. Our results indicated different sublethal responses upon exposure to recycled compared to virgin LDPE MP.

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