Article
Environmental Sciences
Ying Qi Du, Jin Yu Cai, Xiao Quan Deng, Wen Wang Liang, Xue Lei Hu
Summary: Juvenile hormone analogues (JHAs) are effective insecticides with low toxicity for fish, birds, and mammals, making them increasingly used in insect pest control. However, JHAs may have adverse effects in crustaceans due to their close evolutionary relationship and similar hormonal systems. A study evaluated the acute, chronic, and transgenerational effects of a terpenoid JHA, kinoprene, on the water flea Moina macrocopa. Results showed that kinoprene had high toxicity, inhibited survival, development, and reproduction, and induced transgenerational effects in M. macrocopa.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2023)
Article
Ecology
Y. Gao, K-Y Fan, J-X Wei, Y-Y Zeng, Q-F Liu, C. Wang
Summary: In recent years, there has been a significant increase in microplastics in the aquatic environment, causing severe pollution. This study investigated the effects of microplastic concentrations on freshwater zooplankton. The results showed that higher microplastic concentrations led to decreased survival time and reduced reproduction rate of the zooplankton.
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
(2023)
Article
Ecology
Lu Wang, Xiao Quan Deng, Jin Yu Cai, Wen Wang Liang, Ying Qi Du, Xue Lei Hu
Summary: The imidazolium-based ionic liquid, [Demim]PF6, has been found to have adverse effects on the survival, development, and reproduction of M. macrocopa. The toxicity of [Demim]PF6 also extends to the following generation, leading to the complete cessation of reproduction and significant growth inhibition. These findings provide valuable insight into the intergenerational toxicity of ILs to crustaceans and highlight the potential risks they pose to the aquatic ecosystem.
Article
Genetics & Heredity
Sang-Eun Nam, Jaehee Kim, Jae-Sung Rhee
Summary: The complete mitochondrial genome of the freshwater water flea Moina macrocopa was sequenced and annotated, with a length of 16,072 bp. Phylogenomic analysis revealed that M. macrocopa is closely related to members of the Daphniidae family.
MITOCHONDRIAL DNA PART B-RESOURCES
(2022)
Article
Fisheries
A. S. Mubarak, D. Jusadi, J. R. Muhammad Zairin, M. A. Suprayudi
Summary: This study found that replacing rice bran suspension with fishmeal suspension can improve hatchability and ephippia production in M. macrocopa. A substitution rate of 30% resulted in an increased concentration of n-3 fatty acids in the eggs of ephippia M. macrocopa.
IRANIAN JOURNAL OF FISHERIES SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Jaehee Kim, Jae-Sung Rhee
Summary: The experimental exposure of water fleas to polystyrene microbeads resulted in clear ingestion and egestion, with higher concentrations significantly decreasing survival rate. The effects of exposure on growth were evident across generations, while reproduction parameters showed more consistency between generations. Initial exposure induced oxidative stress and antioxidant defense, but prolonged exposure inhibited antioxidant response, indicating concentration-dependent harmful effects on water flea populations.
MOLECULAR & CELLULAR TOXICOLOGY
(2021)
Article
Marine & Freshwater Biology
Thilomi Samarakoon, Takeshi Fujino
Summary: Investigating the effects of natural compounds and xenobiotics on aquatic ecosystems is crucial for ecological risk assessments. This study focused on the effects of sublethal cadmium concentrations and humic acid concentrations on various characteristics of Moina macrocopa. Results showed that cadmium had negative effects on swimming velocity and reproduction, while humic acid had positive effects on growth, reproduction, and lifespan. When combined, the positive effects of humic acid on life-history characteristics were still observed at low Cd concentration, but not at higher concentration. These findings suggest energy tradeoffs in M. macrocopa when exposed to stressors.
Article
Ecology
Tatiana Lopatina, Olesya Anishchenko, Natalia Oskina, Egor Zadereev
Summary: The road deicer, primarily composed of NaCl, negatively affects survival and life cycle parameters of animals at concentrations above 5 g L-1, as well as the hatching success of resting eggs exposed to contaminated sediments. Resilience of resting eggs to contaminated sediments ensures population replenishment after salinity disturbance diminishes, but negative effects on active population due to elevated salt content in surface waters will be observed at lower salinities.
Article
Biochemistry & Molecular Biology
Jaehee Kim, Yugyeong Sim, Jinyoung Jeong, Jee-Hyun Jung, Jae-Sung Rhee
Summary: This study evaluated the potential harmful effects of fragmented polyvinyl chloride (PVC) on a water flea model. The results showed that PVC fragments can be temporarily bioconcentrated through ingestion and then egested in feces. Higher concentrations of PVC fragments significantly increased mortality and inhibited growth, reproduction, and antioxidant defense.
MOLECULAR & CELLULAR TOXICOLOGY
(2023)
Article
Marine & Freshwater Biology
Hidayu Suhaimi, Amirah Yuslan, Mhd Ikhwanuddin, Fatimah Md Yusoff, A. G. Mazlan, Ahasan Habib, A. H. Mustafa Kamal, Nadiah W. Rasdi
Summary: This study examined the effects of different diets on M. macrocopa and found that M. macrocopa fed on rice bran had higher population density, survival, productivity, and nutrient quality.
Article
Marine & Freshwater Biology
Meetztli Alejandra Valencia-Vargas, S. Nandini, S. S. S. Sarma, Maria Elena Castellanos-Paez
Summary: This study quantified the impact of two cyclopoid species on the population growth of two rotifer species. The results showed that the invasive copepod had a negative effect on the smaller rotifer species, but not on the larger one.
Article
Environmental Sciences
Yingdi Shao, Wen Zhao, Jie Wei, Shan Wang, Yu Wang, Yu Zhang
Summary: The study demonstrated that nonylphenol (NP) has high toxicity to Moina mongolica, significantly inhibiting its growth, reproduction, and population growth. Additionally, toxic effects were observed in recovery generations, with amplification in the F1 generation, suggesting that NP has overt reproductive toxic and transgenerational effects on M. mongolica. Further investigation on the damage caused by hormone-like chemicals such as NP to aquatic environments is recommended.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Fisheries
Jess Maria Wilson, Boby Ignatius, B. Santhosh, Paramita Banerjee Sawant, S. Anju Soma
Summary: The study evaluated the impacts of adult density on key biological parameters of the tropical estuarine copepod A. tropica, finding that a density of 1000 adults/L resulted in highest relative egg production and overall productivity. Conversely, the highest adult mortality and nauplii cannibalism were observed at a density of 2000 adults/L. Additionally, the population with an initial density of 2000/L stabilized at 1000 adults/L after 8 days culture.
Article
Ecology
Lisa E. Wallace, Marlin L. Bowles
Summary: Understanding the processes of evolutionary diversification requires understanding how natural selection acts on intraspecific variation to bring about phenotypic divergence. In this study, phenotypic and genetic variation in the orchid Platanthera dilatata in coastal Southeast Alaska were examined to evaluate causes of phenotypic divergence. The results showed that flower morphological variation is structured at smaller geographic scales and is associated with different habitats, with genetic analyses confirming the morphological clusters.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Multidisciplinary Sciences
Meihua Jin, Chae A. Kim, Dong Jun Bae, Sang-Yeob Kim, Tae Yong Kim, Won Bae Kim, Young Kee Shong, Won Gu Kim, Min Ji Jeon
Summary: This study evaluated changes in the peripheral blood immune cell population in patients with advanced thyroid cancer receiving lenvatinib treatment to confirm the immune-modulatory effect of lenvatinib. After obtaining informed consent from patients, we prospectively collected 20 ml of whole blood at 2-3 months intervals 2-4 times from each patient; peripheral blood mononuclear cells (PBMCs) were separated, and the Maxpar Direct Immune Profiling Assay was performed. A total of 10 patients were enrolled, and 31 blood samples were obtained. The proportion of peripheral natural killer (NK) cells significantly increased during lenvatinib treatment in advanced thyroid cancer patients, confirming the immune-modulatory effect of lenvatinib.
SCIENTIFIC REPORTS
(2023)
Article
Ecology
S. Nandini, M. R. Miracle, E. Vicente, S. S. S. Sarma
Summary: The study compared the demographic variables and bacterivory of two strains of Diaphanosoma mongolianum from different water bodies in Spain. It was found that both strains could effectively utilize Microcystis for survival and growth, regardless of previous exposure. Additionally, the tested cladocerans showed good growth on small sized food particles.
Article
Ecology
S. Nandini, S. S. S. Sarma
Summary: This study examined the effects of different food concentrations and competition from other zooplankton on D. propatula, finding that food density significantly influenced population growth and reproductive rates, while competition from ciliates reduced growth. The findings also showed that both gross and net reproductive rates increased with higher algal food levels, and D. propatula exhibited growth patterns similar to other members of the Euchlanidae family.
Article
Ecology
Alma Rosa Nunez-Ortiz, S. Nandini, S. S. S. Sarma
Summary: This study determined the food preference and prey density of Stenostomum virginianum in the littoral zone of the Benito Juarez reservoir. The results showed that rotifers were the main prey for Stenostomum virginianum, and other invertebrate predators also had an impact on the rotifer communities.
ECOHYDROLOGY & HYDROBIOLOGY
(2022)
Article
Ecology
Ana Nayeli Lopez-Rocha, S. S. S. Sarma, S. Nandini
Summary: This study investigated the allelopathic effects of two different animals on the life-history variables of rotifers and found that the chemicals produced by calanoids had a greater impact on the rotifers.
Article
Marine & Freshwater Biology
S. Nandini, Jose Alberto Carmona-Ruiz, S. S. S. Sarma
Summary: Life history strategies of rotifers can vary depending on their habitats, as shown in this study comparing Hexarthra jenkinae populations from ephemeral pools and permanent lakes. Results indicate that survivorship and growth rates increase with higher food availability. Populations from ephemeral pools showed higher growth rates compared to those from the permanent lake in the population growth studies.
Article
Marine & Freshwater Biology
S. Nandini, S. S. S. Sarma, R. L. Wallace
Summary: Mexico is a megadiverse country with 10% of all known species found within its borders. Although the CONABIO catalogue registers rotifers as one of the best-studied animal groups in Mexico, it does not record any exotic species of Rotifera. However, this study confirms the presence of six exotic rotifers species in Mexican inland waters, including Kellicottia bostoniensis, which has been recorded in Mexico since the 1990s but never classified as an exotic species.
JOURNAL OF PLANKTON RESEARCH
(2022)
Article
Marine & Freshwater Biology
Jose Luis Viveros-Legorreta, S. S. S. Sarma, Maria Elena Castellanos-Paez, S. Nandini
Summary: In this study, we investigated the effects of phenolic compounds from hydrophytes on the survival and reproduction of rotifers. The results showed that these compounds influenced the age-specific survival, lifespan, and reproductive rates of the rotifers, but their effects depended on other chemicals released into the medium.
Article
Marine & Freshwater Biology
Meetztli Alejandra Valencia-Vargas, S. Nandini, M. E. Castellanos Paez, S. S. S. Sarma
Summary: High species diversity may not hinder the successful establishment and ecological impact of invasive species.
JOURNAL OF PLANKTON RESEARCH
(2022)
Review
Environmental Sciences
S. Nandini, S. S. S. Sarma
Summary: This article summarizes the research done in the past 50 years on the interactions between zooplankton and cyanobacteria. It covers topics such as filtering/ingestion rates and phytoplankton preferences of different types of zooplankton, growth rates of zooplankton on cyanobacterial diets, feeding rates of other freshwater invertebrates on cyanobacteria, the role of zooplankton in top-down biomanipulation efforts, the effect of cyanotoxins on zooplankton, bioaccumulation of cyanotoxins, and physical and chemical control of cyanobacterial blooms.
Article
Ecology
Jose Antonio Hernandez-Lucero, S. S. S. Sarma, S. Nandini
Summary: We quantified the feeding behavior and demographic parameters of the predatory rotifer Asplanchna sieboldii fed on prey previously exposed to microplastics, cadmium (Cd), or both. The results showed that the capture and ingestion rates of the prey decreased by 71% and 61%, respectively, when exposed to both microplastics and Cd. Life table data revealed that the predator had a longer lifespan when fed on prey exposed to both Cd and microplastics. Regardless of the prey treatment, the offspring production of A. sieboldii increased with the increase in available prey numbers, but decreased when contaminated prey was offered as food.
Article
Marine & Freshwater Biology
S. S. S. Sarma, S. Nandini
Summary: In this study, the population growth of the predatory heliozoan Actinosphaerium eichhornii was measured when fed four different rotifer prey species at different densities. The results showed that increasing prey density led to increased population growth of A. eichhornii regardless of the prey species. Higher prey densities also resulted in higher cyst production in A. eichhornii. When cultured together, A. fissa, B. calyciflorus, and B. havanaensis were eliminated within 4 days by heliozoans, while Plationus patulus could survive for about 10 days. The highest rate of population increase of heliozoans was observed when fed B. calyciflorus at a density of 2 ind. ml(-1) day(-1).
Article
Marine & Freshwater Biology
Erik Jeppesen, Miguel Canedo-Arguelles, Sally Entrekin, S. S. S. Sarma, Judit Padisak
Article
Marine & Freshwater Biology
Meetztli Alejandra Valencia-Vargas, S. Nandini, S. S. S. Sarma, Maria Elena Castellanos-Paez
Summary: This study quantified the impact of two cyclopoid species on the population growth of two rotifer species. The results showed that the invasive copepod had a negative effect on the smaller rotifer species, but not on the larger one.
Article
Multidisciplinary Sciences
Veronica Nava, Sudeep Chandra, Julian Aherne, Maria B. Alfonso, Ana M. Antao-Geraldes, Katrin Attermeyer, Roberto Bao, Mireia Bartrons, Stella A. Berger, Marcin Biernaczyk, Raphael Bissen, Justin D. Brookes, David Brown, Miguel Canedo-Argueelles, Moises Canle, Camilla Capelli, Rafael Carballeira, Jose Luis Cereijo, Sakonvan Chawchai, Soren T. Christensen, Kirsten S. Christoffersen, Elvira de Eyto, Jorge Delgado, Tyler N. Dornan, Jonathan P. Doubek, Julia Dusaucy, Oxana Erina, Zeynep Ersoy, Heidrun Feuchtmayr, Maria Luce Frezzotti, Silvia Galafassi, David Gateuille, Vitor Goncalves, Hans-Peter Grossart, David P. Hamilton, Ted D. Harris, Kuelli Kangur, Goekben Basaran Kankilic, Rebecca Kessler, Christine Kiel, Edward M. Krynak, Angels Leiva-Presa, Fabio Lepori, Miguel G. Matias, Shin-ichiro S. Matsuzaki, Yvonne McElarney, Beata Messyasz, Mark Mitchell, Musa C. Mlambo, Samuel N. Motitsoe, Sarma Nandini, Valentina Orlandi, Caroline Owens, Deniz Ozkundakci, Solvig Pinnow, Agnieszka Pociecha, Pedro Miguel Raposeiro, Eva-Ingrid Room, Federica Rotta, Nico Salmaso, S. S. S. Sarma, Davide Sartirana, Facundo Scordo, Claver Sibomana, Daniel Siewert, Katarzyna Stepanowska, UlkU Nihan Tavsanoglu, Maria Tereshina, James Thompson, Monica Tolotti, Amanda Valois, Piet Verburg, Brittany Welsh, Brian Wesolek, Gesa A. Weyhenmeyer, Naicheng Wu, Edyta Zawisza, Lauren Zink, Barbara Leoni
Summary: Plastic debris is widely present in freshwater ecosystems globally, with lakes and reservoirs in densely populated and urbanized areas and large lakes and reservoirs with elevated deposition areas, long water-retention times and high levels of anthropogenic influence being particularly vulnerable. The concentrations of plastic vary among lakes, with some reaching or even exceeding those reported in marine areas collecting large amounts of debris such as the subtropical oceanic gyres. This study highlights the importance of including lakes and reservoirs in addressing plastic pollution for effective pollution management and the preservation of lake ecosystem services.
Article
Biodiversity Conservation
Sergio Gonzalez-Gutierrez, S. S. S. Sarma, S. Nandini
Summary: We studied the species diversity and morphometric variations of rotifers in the Llano reservoir in central Mexico. We collected samples monthly from four stations in the reservoir and identified 54 species of monogonont rotifers. The most abundant species were Polyarthra vulgaris, Lecane closterocerca, Trichocerca porcellus, Lepadella patella, and Keratella cochlearis.