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Transcriptome alterations in female Daphnia (Daphnia magna) exposed to 17β-estradiol
Environmental Pollution, 2020The molecular mechanism of evaluating 17β-estradiol (E2)-induced toxicity in female Daphnia magna has not been determined. In this study, the transcriptome of D. magna was analyzed after exposure to three different concentrations (0, 10, and 100 ng L-1) of E2 at 3, 6, and 12 h.
Yao, Zheng +5 more
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Journal of Morphology, 2012
AbstractThe freshwater crustacean Daphnia is well known for its phenotypic plasticity, in which environmental cues are perceived by the nervous system and transformed into phenotypic adaptations beneficial under current conditions. Critical knowledge regarding the distribution and localization of neuronal antigens or neurotransmitters and ...
Linda C, Weiss +3 more
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AbstractThe freshwater crustacean Daphnia is well known for its phenotypic plasticity, in which environmental cues are perceived by the nervous system and transformed into phenotypic adaptations beneficial under current conditions. Critical knowledge regarding the distribution and localization of neuronal antigens or neurotransmitters and ...
Linda C, Weiss +3 more
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Daphnia (Ctenodaphnia) pusilla
2022Daphnia (Ctenodaphnia) pusilla (Serventy, 1929) (Figs 1–8) Daphniopsis pusilla Serventy, 1929: 65–67, Plate IX: Figs A–D; Smirnov & Timms 1983: 106, Fig. 125; Sergeev & Williams 1983: 294–299, Figs 1–4; Sergeev & Williams 1985: 127–128, Fig. 6; Hann 1986: Fig. 5F; Sergeev 1990a: 6, Figs 5 C–D; Hebert & Wilson 2000: 806, Figs 9A–C.
Kotov, Alexey A. +3 more
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2021
Neonicotinoids (which include imidacloprid) are the world s most widely used insecticides, with global production valued at US$ 2.5 billion and registrations in more than 120 countries. Imidacloprid insecticide was detected in the water samples at the sites of constant ecological and toxicological monitoring.
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Neonicotinoids (which include imidacloprid) are the world s most widely used insecticides, with global production valued at US$ 2.5 billion and registrations in more than 120 countries. Imidacloprid insecticide was detected in the water samples at the sites of constant ecological and toxicological monitoring.
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2009
The proposed test strategy combined the direct and indirect approaches, integrating organisms representing the terrestrial and aquatic ecosystems. For the latter, several tests were selected; the Daphnia magna mobility test, the algal growth inhibition test and the inhibition of light emission of Vibrio fischeri were considered as a basic test set ...
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The proposed test strategy combined the direct and indirect approaches, integrating organisms representing the terrestrial and aquatic ecosystems. For the latter, several tests were selected; the Daphnia magna mobility test, the algal growth inhibition test and the inhibition of light emission of Vibrio fischeri were considered as a basic test set ...
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2016
Published as part of Popova, Ekaterina V., Petrusek, Adam, Kořínek, Vladimír, Mergeay, Joachim, Bekker, Eugeniya I., Karabanov, Dmitry P., Galimov, Yan R., Neretina, Tatyana V., Taylor, Derek J. & Kotov, Alexey A., 2016, Revision of the Old World Daphnia (Ctenodaphnia) similis group (Cladocera: Daphniidae), pp. 1-40 in Zootaxa 4161 (1) on page 32, DOI:
Popova, Ekaterina V. +9 more
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Published as part of Popova, Ekaterina V., Petrusek, Adam, Kořínek, Vladimír, Mergeay, Joachim, Bekker, Eugeniya I., Karabanov, Dmitry P., Galimov, Yan R., Neretina, Tatyana V., Taylor, Derek J. & Kotov, Alexey A., 2016, Revision of the Old World Daphnia (Ctenodaphnia) similis group (Cladocera: Daphniidae), pp. 1-40 in Zootaxa 4161 (1) on page 32, DOI:
Popova, Ekaterina V. +9 more
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2016
Daphnia (Ctenodaphnia) sp. (Figure 6) Material. Images provided by Cañellas-Boltà (Fig. 6); see Cañellas-Boltà et al. (2012). Unidentified record from Rano Raraku Lake sediment core, Easter Island, in Cañellas-Boltà et al. (2012: Fig. 3 n, Cladocera ephippia IBB- 98). Notes. Unknown Ctenodaphnia species. Small ephippium, length about 650µm, width 250µm
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Daphnia (Ctenodaphnia) sp. (Figure 6) Material. Images provided by Cañellas-Boltà (Fig. 6); see Cañellas-Boltà et al. (2012). Unidentified record from Rano Raraku Lake sediment core, Easter Island, in Cañellas-Boltà et al. (2012: Fig. 3 n, Cladocera ephippia IBB- 98). Notes. Unknown Ctenodaphnia species. Small ephippium, length about 650µm, width 250µm
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Aphanomyces daphniae sp.nov., parasitic on Daphnia hyalina
Transactions of the British Mycological Society, 1954Aphanomyces daphnia sp.nov. was found parasitizing Daphnia hyalina var. lacustris. Filamentous zoosporangia emerging through the wall of the host were of typical Aphanomyces type, with a single row of zoospores encysting immediately on emergence. Oogonia were abundant in some specimens, each with a single egg and 1-3 diclinous antheridia.
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Oecologia, 1997
Daphnia magna can respond to chemical cues from freshly crushed conspecifics with various behavioural reactions. A shift in vertical distribution towards the bottom, the formation of aggregations and direct escape responses can all be induced by water-borne signals released from crushed Daphnia.
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Daphnia magna can respond to chemical cues from freshly crushed conspecifics with various behavioural reactions. A shift in vertical distribution towards the bottom, the formation of aggregations and direct escape responses can all be induced by water-borne signals released from crushed Daphnia.
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Proceedings of the Royal Society of London. Series B - Biological Sciences, 1957
Carotenoid pigments are found in the gut wall, fat cells and ovary ofDaphnia. A carotenoid-protein is sometimes present in the blood; the amount varies during an instar. The carotenoid-protein in the eggs ofDaphniaand certain other Cladocera undergoes a change when the embryos are fully developed.
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Carotenoid pigments are found in the gut wall, fat cells and ovary ofDaphnia. A carotenoid-protein is sometimes present in the blood; the amount varies during an instar. The carotenoid-protein in the eggs ofDaphniaand certain other Cladocera undergoes a change when the embryos are fully developed.
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