High Resistance of Resting Eggs of Cladoceran Moina macrocopa to the Effect of Heavy Metals

Oskina, Natalia; Lopatina, Tatiana S.; Анищенко, О. В.; Zadereev, Egor

doi:10.1007/s00128-018-2473-7

Cited by 13 publications

(6 citation statements)

References 27 publications

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“…Among those highly sensitive to cosmic stress, another group of clones with an increased level of the laying of resting eggs has emerged, under the same conditions as the rest, which can also be interpreted as an increased stress response, similar to the previously found increased male production upon the onboard exposure of eggs of this species. This result was confirmed in ground-based experiments with the effect of weak radiation on the production of Daphnia magna ephippia [35].…”

Section: Experiments Outside Of the Spacecraft In Spacesupporting

confidence: 65%

Effect of Space Flight Factor on Dormant Stages in Aquatic Organisms: A Review of International Space Station and Terrestrial Experiments

Alekseev

Hwang

Levinskikh

2021

Life

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This work is a review of the experiments carried out in the Russian segment of the ISS (inside and outside) from 2005 to 2016 on the effect of the space flight factor on the resting stages of organisms. In outer space, ultraviolet, a wide range of high and low temperatures, cosmic radiation, altered gravity, modified electromagnetic field, vacuum, factors of technical origin, ultrasound, microwave radiation, etc. and their combination determine the damaging effect on living organisms. At the same time, biological dormancy, known in a wide range of bacteria, fungi, animals and plants, allows them to maintain the viability of their dormant stages in extreme conditions for a long time, which possibly allows them to survive during space flight. From 2005 to 2016, the resting stages (propagules) of micro- and multicellular organisms were tested on the ISS to assess their ability to survive after prolonged exposure to the conditions of open space and space flight. Among the more than 40 species studied, about a third were dormant stages of aquatic organisms (eggs of cyprinodont fish, daphnia embryos, resting eggs of fairy shrimps, tadpole shrimps, copepods and ostracods, diapausing larvae of dipterans, as well as resting cysts of algae). The experiments were carried out within the framework of four research programs: (1) inside the ISS with a limited set of investigated species (Akvarium program); (2) outside the station in outer space without exposure to ultraviolet radiation (Biorisk program); (3) under modified space conditions simulating the surface of Mars (Expose program); and (4) in an Earth-based laboratory where single-factor experiments were carried out with neutron radiation, modified magnetic field, microwave radiation and ultrasound. Fundamentally new data were obtained on the stability of the resting stages of aquatic organisms exposed to the factors of the space environment, which modified the idea of the possibility of bringing Earth life forms to other planets with spacecraft and astronauts. It also can be used for creating an extraterrestrial artificial ecosystem and searching for extraterrestrial life.

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Section: Experiments Outside Of the Spacecraft In Spacesupporting

confidence: 65%

Effect of Space Flight Factor on Dormant Stages in Aquatic Organisms: A Review of International Space Station and Terrestrial Experiments

Alekseev

Hwang

Levinskikh

2021

Life

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“…However, it is important to note that other stressors than trace metals could differ between rural and city sites and be responsible of the observed difference, but we did not specifically test them in this study. Overall, the higher rate of paused larvae in city colonies could be an adaptive response to cadmium; paused larvae avoid feeding on cadmium and they may resume their development once cadmium exposure is over, as shown in other studies (Aránguiz-Acuña and Serra, 2016;Oskina et al, 2019). This may also explain the differential larval mortality rate in spring colonies, with lower mortality in city colonies because of more paused larvae.…”

Section: Discussionsupporting

confidence: 54%

Spring colonies of the ant Temnothorax nylanderi tolerate cadmium better than winter colonies, in both a city and a forest habitat

2022

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A recent study showed that, in the ant Temnothorax nylanderi, city colonies are more tolerant to cadmium than forest colonies. However, because of annual variation in biological factors (e.g. body size, anti-stress protein production or trace metal accumulation rate), trace metal tolerance may vary over the year. We aimed at testing whether tolerance to cadmium of colonies of T. nylanderi differs between two different seasons within the same year (winter and spring). We also assessed whether the better cadmium tolerance of city colonies was constant over these two different time points. We collected colonies at the end of their hibernation period (winter colonies) and several weeks after (spring colonies) from two different habitats (forest and city) to assess whether response to cadmium was consistent regardless of the environment. We exposed colonies to a cadmium or a control treatment for 61 days. We compared tolerance to cadmium between spring/winter and city/forest colonies by measuring several life history traits. We found that spring colonies tolerates cadmium better than winter colonies, and that city colonies have a higher tolerance to cadmium but only in spring. Although further studies with replicated pairs of city/forest habitats and different years will be necessary to confirm those results, our study suggests that tolerance to trace metals can fluctuate along the yearly cycle.

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“…Further, the xenobiotics in sediments can be toxic to the zooplankton community organisms (Gillis et al 2006;Terra & Gonçalves 2013). Studies carried out with dormant forms have shown considerable resistance of eggs to pollutants, corroborating the importance of egg banks in the repopulation of the water column after periods of environmental stress (Oskina et al 2018;Zadereev et al 2019).…”

Section: Active Community Passive Communitymentioning

confidence: 85%

Zooplankton resting egg banks as a strategy to maintain diversity in a small tropical reservoir ecosystem

2022

IECA

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Small water bodies host numerous zooplankton species, which are directly influenced by their surroundings. During environmental instability, zooplanktons produce nutrient-rich eggs, via the process of diapause, that sink to the sediment and remain dormant under unfavorable environmental conditions. We aimed to observe how diapause helps maintain the richness of the zooplankton community in the small-sized Amália Reservoir, located in the municipality of Alfenas, Minas Gerais, Brazil. The studied reservoir is a well-defined microbasin with urbanization processes and a predominance of pastures and coffee plantations. The reservoir has low zooplanktonic richness despite having numerous macrophytes on its margin, which contributes to species richness. Zooplankton species were observed in dormant forms that were not recorded in the water column, demonstrating the importance of egg banks for long-term zooplanktonic survival. However, anthropogenic activities may have influenced the low number of species and dormant forms. Thus, knowing the species present in the water column in the sediment of the Amália Reservoir proved the importance of the dormant form bank for the long-term survival and structuring of the community.

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High Resistance of Resting Eggs of Cladoceran Moina macrocopa to the Effect of Heavy Metals

Cited by 13 publications

References 27 publications

Effect of Space Flight Factor on Dormant Stages in Aquatic Organisms: A Review of International Space Station and Terrestrial Experiments

Effect of Space Flight Factor on Dormant Stages in Aquatic Organisms: A Review of International Space Station and Terrestrial Experiments

Spring colonies of the ant Temnothorax nylanderi tolerate cadmium better than winter colonies, in both a city and a forest habitat

Zooplankton resting egg banks as a strategy to maintain diversity in a small tropical reservoir ecosystem

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