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48 results for “resting egg”
Figure 1 in Morphological examination of the resting egg structure of 3 cladoceran species [Ceriodaphnia quadrangula (O. F. Müller, 1785), Daphnia longispina (O. F. Müller, 1776), and D. magna Straus, 1820]
Figure 1. Resting egg photos of 3 species (Daphnia magna, D. longispina, Ceriodaphnia quadrangula). A) SEM photo of C. quadrangula, B) SEM photo of D. longispina, C) SEM photo of D. magna, D) light microscope photo of C. quadrangula, E) light microscope photo of D. longispina, F) light microscope photo of D. magna.
Data from: Cost-saving population genomic investigation of Daphnia longispina complex resting eggs using whole genome amplification and pre-sequencing screening
<p>This dataset contains all paired MiSeq sequences that were generated for the study "Cost-saving population genomic investigation of<em> Daphnia longispina</em> complex resting eggs using whole genome amplification and pre-sequencing screening" by Nickel and Cordellier.</p> <p>The sample names used in the study and the associated file names are explained in the table<strong> </strong>"Study_sample_names.xlsx"</p> <p> </p>
Data from: Resilience to changes in lake trophic state: nutrient allocation into Daphnia resting eggs
<p><span><span><span><span><span><span><span><span><span><span><span>During past decades, many lakes underwent drastic human-caused changes in trophic state with strong implications for population dynamics and food web processes. We investigated the influence of trophic state on nutrient allocation into <i>Daphnia</i> resting eggs. The production of resting eggs is an important survival strategy, allowing <i>Daphnia </i>to cope with unfavorable environmental conditions. Allocation of essential nutrients into resting eggs may crucially influence embryonic development and offspring survival and thus is of great ecological and evolutionary interest. The capacity of <i>Daphnia</i> to adjust the allocation of nutrients into resting eggs may depend on the dietary nutrient supply, which may vary with trophic state-related changes in the phytoplankton community composition. Resting eggs were isolated from sediment cores taken from Lake Constance, a large pre-alpine lake with a distinct eutrophication and re-oligotrophication history, and analysed for elemental (carbon, nitrogen and phosphorus) and biochemical (sterols and fatty acids) nutrients. Carbon allocation into <i>Daphnia </i>resting eggs continuously decreased over time, irrespective of changes in trophic state. The allocation of nitrogen into <i>Daphnia</i> resting eggs followed the changes in trophic state, i.e. nitrogen concentrations in resting eggs increased with eutrophication and decreased again with re-oligotrophication. The allocation of phosphorus, sterols and long-chain polyunsaturated fatty acids (PUFA), such as eicosapentaenoic acid (EPA), into <i>Daphnia</i> resting eggs did not change significantly over time. Changes in trophic state strikingly influenced all trophic levels in Lake Constance. However, nutrient allocation into <i>Daphnia</i> resting eggs was mostly resilient to changes in lake trophic state. </span></span></span></span></span></span></span></span></span></span></span></p>
Next-generation sequencing of DNA from resting eggs: signatures of eutrophication in a lake's sediment
<p>Supplementary data</p>
FIGURE 23. A in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 23. A strict consensus of four trees (TL=47) generated from our data matrix (Tables 1, 2) using M. macleayi as outgroup.
FIGURE 20 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 20. Moina brachiata (Jurine, 1820) from Bayan-Tsagan lake, Russia. A–E, Adult parthenogenetic female. F, Ephippial female. G–I, Adult male. A, Posterior portion of valve. B, Postabdomen. C, Distal portion of postabdomen. D, Rows of setules on dorsal portion of postabdomen. E, Antenna I. F, Ephippium, lateral view. G–H, Antenna I and its distal portion. I, Limb I. Scale bars 0.5 mm for F, 0.2 mm for B, 0.1 mm for I, G, 0.05 mm for A, C–E, 0.02 mm for H.
FIGURE 22 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 22. Comparisons of stiff setae in the parthenogenetic females of different Moina species. A, Moina belli Gurney, 1904 from Pool 2 on Thaba Tseka Road, km 45.2 from T.O., Drakensberg, Lesotho. B, M. belli from Shenburit Dam, Ethiopia. C, Moina kaszabi Forró, 1988 from Sukhbaatar, Mongolia. D, Moina macrocopa (Straus, 1820) from Laalaligue, Algeria. E–F M. macrocopa from puddles on the island Barsakelmes, Kazakhstan. G–I, M. macrocopa from a large lake near Ungi-Gol River, entrance to the Lake Valley, Mongolia. J–K, Moina sp. from a small watering puddle near Tore-Hol Lake, Russia. L, Moina brachiata (Jurine, 1820) from Bayan-Tsagan lake, Russia. M–N, M. brachiata from the central part of Orog-Nur Lake, Mongolia. O, M. brachiata from Rooiwal, the Republic of South Africa. Scale bar 0.1 mm.
FIGURE 21. M in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 21. M. brachiata (Jurine, 1820) from the central part of Orog-Nur Lake, Mongolia. A–C, Adult parthenogenetic female. D–I, Ephippial female. A, Postabdomen. B, Postabdominal claws in outer and inner views. C, Rows of setules on dorsal portion of postabdomen. D, Antenna I. E, Antenna II. F, Hairs on proximal endopod segment of antenna II. G, Ephippium, lateral view. H–I, Details of limbs structure. Scale bars 0.2 mm for A, E–G, 0.05 mm for B, D, H, 0.02 mm for C, 0.01 mm for I.
FIGURE 19 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 19. Moina sp. from a small watering puddle near Tore-Hol Lake, Russia. A–D, Adult parthenogenetic female. E–F, Ephippial female. G–H, Adult male. A, Distal portion of postabdomen. B, Trident basal tooth of postabdomen. C, Hairs on preanalportion of postabdomen. D, Stiff seta 2 on limb I. E, Ephippium, lateral view. F, Central portion of ephippium. G, Distal portion of antenna I. H, Corm of limb I. Scale bars 0.5 mm for E, 0.05 mm for C, H, 0.02 mm for A, D, F, 0.01 mm for B, G.
FIGURE 18 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 18. Moina macrocopa (Straus, 1820) from puddles on the island Barsakelmes, Kazakhstan. A–B, Ephippium. C–J, Adult male. A, Ephippium, lateral view. B, Ephippium, central portion. C–D, Postabdomen. E, Hairs on dorsal portion of postabdomen. F, Antenna I. G–H, Distal portion of antenna I. I, Details of limbs structure. J, Limb I. Scale bars 0.2 mm for A, 0.1 mm for C, F, I, 0.05 mm for D, J, 0.02 mm for B, E, 0.01 mm for G–H.
FIGURE 17 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 17. Moina macrocopa (Straus, 1820), adult parthenogenetic female from a large lake near Ungi-Gol River, entrance to the Lake Valley, Mongolia. A, Central portion of valve. B, Distal portion of postabdomen. C, Branches of antenna II. D–E, Limb I and its stiff seta 2. Scale bars 0.2 mm for C, 0.1 mm for D, 0.05 mm for B, E, 0.02 mm for A.
FIGURE 16 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 16. Comparison of armature of posteroventral portion of valve in Moina belli Gurney, 1904 from Pool 2 on Thaba Tseka Road, km 45.2 from T.O., Drakensberg, Lesotho (A–B) and Moina kaszabi Forró, 1988 from Sukhbaatar, Mongolia (C–D). A, C, Posteroventral portion of valves, outer view. B, D, Posteroventral portion of valves, inner view. Scale bars 0.05 mm for –D, 0.02 mm for A, 0.01 mm for B.
FIGURE 15 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 15. Moina kaszabi Forró, 1988 from Sukhbaatar, Mongolia. A–E, Ephippial female. F–G, Adult male. A, Antenna II. B, Ephippium, lateral view. C–D, Ornamentation of ephippium. E, Ephippium dorsal plate. F–G, Male postabdomen and its distal portion. Scale bars 0.2 mm for B, 0.1 mm for A, C–D, F, 0.02 mm for E, G.
FIGURE 14 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 14. Moina kaszabi Forró, 1988, adult parthenogenetic female from Sukhbaatar, Mongolia. A, Dorsal head pore. B, Valve. C, Setulated hook on posterior most portion of valves. D, Armature of ventral portion of valve. E, Armature of posteroventral portion of valve. F–G, Postabdomen and its distal portion. H, Preanal portion of postabdomen. I, Postabdominal claw, outer view. J, Limb I. Scale bars 0.1 mm for F, 0.05 mm for B, G–H, J, 0.02 mm for A, C–E, I.
FIGURE 12 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 12. Moina kaszabi Forró, 1988, adult parthenogenetic female from Sukhbaatar, Mongolia. A, Antenna I. B–C, Antenna II. D, Limb I. E, Limb II. F–G, Gnathobase of limb II and its setae. H, Limb III. I, Innerdistal portion of limb III. J, Limb IV. K, Innerdistal portion of limb IV. L, Limb V. Scale bars 0.1 mm.
FIGURE 11 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 11. Moina kaszabi Forró, 1988, adult parthenogenetic female from Sukhbaatar, Mongolia. A, Adult parthenogenetic female, general view. B, Head, lateral view. C, Labrum. D, Valve. E, Setulated hooks on posterior most portions of valves. F, Armature of posterior margin of valve. G, Armature of posteroventral portion of valve. H, Armature of ventral portion of valve. I–K, Postabdomen. L–M, Postabdominal claw in outer and inner views. Scale bars 0.1 mm.
FIGURE 13 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 13. Moina kaszabi Forró, 1988 from Sukhbaatar, Mongolia. A–F, Ephippial female. G–S, Adult male. A, Ephippial female, general view. B, Ephippium, lateral view. C–D, Ephippium dorsal plate. E–F, Ornamentation of central portion of ephippium. G, Adult male, general view. H, Labrum. I, Valve. J, Setulated hooks on posterior most portions of valves. K, Armature of posteroventral portion of valve. L, Armature of ventral portion of valve. M–N, Postabdomen. O, Antenna I. P, Distal portion of antenna I. Q–S, Limb I and its portions. Scale bars 0.1 mm.
FIGURE 10. Moina belli Gurney, 1904 from Pool 2 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 10. Moina belli Gurney, 1904 from Pool 2 on Thaba Tseka Road, km 45.2 from T.O., Drakensberg, Lesotho. A–H, Adult parthenogenetic female. I–J, Ephippial female. A, Ventral portion of valve. B, Setulated hook on posterior most portion of valve. C, Distal portion of postabdomen. D, Hairs on dorsal portion of postabdomen. E, Antenna I. F–H, Details of limbs structure. I, Ephippium, lateral view. J, Anterior portion of ephippium. Scale bars 0.2 mm for I, 0.1 mm for E–F, 0.05 mm for A, C–D, G–H, J, 0.02 mm for B.
FIGURE 24 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 24. Distribution of the moinids with two eggs in ephippium according to analysis of original samples based on morphological characters and genetic data from several previous literature sources (Bekker et al. 2016; Ni et al. 2019; Makino et al. 2020; Deng et al. 2021; Bhanushali et al. 2021).
FIGURE 7. Moina belli Gurney, 1904 in Investigation of the distribution patterns in moinids (Crustacea: Cladocera: Moinidae) forming ephippia with two resting eggs
FIGURE 7. Moina belli Gurney, 1904, parthenogenetic female from Shenburit Dam, Ethiopia. A, Adult parthenogenetic female, general view. B, Adult parthenogenetic female, ventral view. C, Labrum. D, Anterior portion of valve. E, Hairs on outer surface of valve. F, Postabdomen. G, Distal portion of postabdomen. H, Postabdominal claws in outer and inner views. I, Postabdominal claws in ventral view. J, Hairs on dorsal portion of postabdomen. K–M, Antenna I. N, Antenna II. Scale bars 1 mm for A–B, 0.2 mm for F, N, 0.1 mm for C–D, L–M, 0.05 mm for G–K, 0.02 mm for E, O.
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