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35 results for “water fleas”
FIGURE 3 in Notes on morphology and ecology of an elusive water flea Rhynchotalona latens (Sarmaja-Korjonen, Hakojärvi & Korhola, 2000) (Crustacea: Cladocera)
FIGURE 3. Rhynchotalona latens (Sarmaja-Korjonen, Hakojärvi et Korhola, 2000) from coastal Sphagnum mosses at Lake Krugloe, Chupa District, Republic of Karelia, Russia, parthenogenetic female. A, rostrum and antenna base. B, antennule. C,D, antenna. E,F, posterior setae of valves. a1 = antennule, ex = exopodite, en = endopodite.
Data from: Genetic estimates of population age in the water flea, Daphnia magna
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Data from: Genetic and maternal effects on tail spine and body length in the invasive spiny water flea (Bythotrephes longimanus)
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Data from: City life on fast lanes: urbanization induces an evolutionary shift towards a faster life style in the water flea Daphnia
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Data from: Urbanization drives genetic differentiation in physiology and structures the evolution of pace-of-life syndromes in the water flea Daphnia magna
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Data from: Offspring provisioning explains clone specific maternal age effects on life history and lifespan in the water flea, Daphnia pulex
Genetic inheritance underpins evolutionary theories of aging, but the role that nongenetic inheritance plays is unclear. Parental age reduces the life span of offspring in a diverse array of taxa but has not been explained from an evolutionary perspective. We quantified the effect that maternal age had on the growth and maturation decisions, life history, rates of senescence, and life span of offspring from three Daphnia pulex clones collected from different populations. We then used those data to test general hypotheses proposed to explain maternal age effects on offspring life span. Three generations of breeding from young or old mothers produced dramatic differences in the life histories of fourth-generation offspring, including significant reductions in life span. The magnitude of the effect differed between clones, which suggests that genetic and nongenetic factors ultimately underpin trait inheritance and shape patterns of aging. Older parents did not transmit a senescent state to their offspring. Instead, offspring from older ancestors had increased early-life reproductive effort, which resulted in an earlier onset of reproductive senescence, and an increased rate of actuarial senescence, which shortened their life span. Our results provide a clear example of the need to consider multiple inheritance mechanisms when studying trait evolution.
https://doi.org/10.1371/journal.pone.0282247.g008 in New species of Kuqaia from the Lower Jurassic of Sweden indicates a possible water flea (Crustacea: Branchiopoda) affinity
https://doi.org/10.1371/journal.pone.0282247.g008
Data from: Offspring provisioning explains clone specific maternal age effects on life history and lifespan in the water flea, Daphnia pulex
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Data from: Offspring development and life-history variation in a water flea depends upon clone-specific integration of genetic, non-genetic and environmental cues
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Temporal profiling and network analysis of rhythmic gene expression and novel functional gene annotation in the water flea, Daphnia pulex
GEO Series GSE67781. Daphnia pulex. 24 samples. Type: Expression profiling by array.
Stressor mRNA expression profiling of three different stressors in the water flea Daphnia magna
GEO Series GSE24322. Daphnia magna. 51 samples. Type: Expression profiling by array.
Fig 7 in New species of Kuqaia from the Lower Jurassic of Sweden indicates a possible water flea (Crustacea: Branchiopoda) affinity
Fig 7. Scanning electron micrographs of Kuqaia species from the Pliensbachian of Skåne. (a)–(e) Kuqaia radiata Li, 1993; (a) whole specimen (NRM X12707), and (b) enlargement of radial ridges in lateral view, showing the prominence of radial ridges; (c) whole specimen (NRM X12708), (d) and (e) enlargements of radial ridges. (f) and (g) Kuqaia quadrata Li, 1993; (f) specimen (NRM X12706) in dorsal view showing the prominent intersecting ridged ornamentation and (g) enlargement of chequered ornament. All from Kävlinge BH-928 core depth 46.97–46.01 m. Scale bars = 100 μm, unless otherwise indicated. https://doi.org/10.1371/journal.pone.0282247.g007
Fig 6 in New species of Kuqaia from the Lower Jurassic of Sweden indicates a possible water flea (Crustacea: Branchiopoda) affinity
Fig 6. Scanning electron micrographs of Kuqaia species from the Pliensbachian of Skåne. Kuqaia quadrata Li, 1993; (a) one broken specimen (NRM X12704) showing intersecting concentric and more prominent radial ridges, (b) Collar-shaped postventral margin, and (c) enlargement of chequered ornament on the dorsal part; (d) lateral view of specimen (NRM X12705) showing typical intersecting concentric and radial ornament of equal prominence. All from Kävlinge BH-928 core depth 42.25–41.15 m. Scale bars = 100 μm, unless otherwise stated. https://doi.org/10.1371/journal.pone.0282247.g006
Fig 4 in New species of Kuqaia from the Lower Jurassic of Sweden indicates a possible water flea (Crustacea: Branchiopoda) affinity
Fig 4. Line drawings showing the morphological characteristics of Kuqaia species. Note that transitional types were indicated for Kuqaia concentrica and K. radiata. https://doi.org/10.1371/journal.pone.0282247.g004
Comparative ovarian microarray analysis of juvenile hormone-responsive genes in water flea Daphnia magna
GEO Series GSE81083. Daphnia magna. 16 samples. Type: Expression profiling by array.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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