Find research datasets worth reusing

Figure 1 in Establishment of an isogenic strain of the desiccationsensitive tardigrade Isohypsibius myrops (Parachela, Eutardigrada) and its life history traits

Figure 1. Graphical experimental scheme of the desiccation assay. In total, 29 or 30 tardigrades were dropped onto the filter paper and placed in the sealed desiccation chamber. The humidity in the chamber was controlled by the presence of saturated salt solution or water, which had no contact with the animals.

Figure 3 in Establishment of an isogenic strain of the desiccationsensitive tardigrade Isohypsibius myrops (Parachela, Eutardigrada) and its life history traits

Figure 3. Sensitivity of the Im1 strain to desiccation. Survival rates after exposure to various humidity conditions for 1 or 2 days. Mean ƚ SD (N = 4; 30 tardigrades each).

Figure 4 in Establishment of an isogenic strain of the desiccationsensitive tardigrade Isohypsibius myrops (Parachela, Eutardigrada) and its life history traits

Figure 4. Life history traits of Im1 strain. A, longevity of Im1 strain. B, hatching time after oviposition.

Figure 5 in Establishment of an isogenic strain of the desiccationsensitive tardigrade Isohypsibius myrops (Parachela, Eutardigrada) and its life history traits

Figure 5. Simulation of population change started with a single newly hatched juvenile of Im1 strain. Theoretical change in the population was simulated based on mean values of life history traits, such as hatching time = 3.6 days; first oviposition = 10.3 days; interval of ovipositions = 2.5 days; lifespan = 18.8 days; number of eggs per clutch = 19; hatchability = 83%.

Figure 2 in Establishment of an isogenic strain of the desiccationsensitive tardigrade Isohypsibius myrops (Parachela, Eutardigrada) and its life history traits

Figure 2. Specimens of cultured Im1 strain. A, live differential interference contrast (DIC) image of an adult individual. The specimen was largely transparent, making it easy to inspect the internal structures. B, dorsal view of the head region. Arrowheads indicate two fatty droplets. C, exuviae containing five embryos. The eggshell has a smooth surface. D, DIC image of the pharyngeal apparatus. Three macroplacoids were visible (ma1, ma2, ma3). No microplacoids were observed. E, DIC image of flattened preparation of the pharyngeal apparatus clearly showing separation of macroplacoids (ma1, ma2, ma3). Scale bars = 100 µm (A, C) and 20 µm (B, D, E). Anterior is left in all panels.

Figure 2 in Tun formation is not a prerequisite for desiccation tolerance in the marine tidal tardigrade Echiniscoides sigismundi

Figure 2. Desiccation tolerance of Echiniscoides sigismundi. Tardigrades were desiccated for a period of 48 hours from seawater (SW) and ultrapurified water (UPW). They were subsequently rehydrated in seawater from the locality and monitored at 5 min, 30 min, 2 h, 24 h, and 48 h post-rehydration. Mean ƚ SEM activity (N = 6) for SW-dehydrated tardigrades: 4 ƚ 2% (5 min post-rehydration); 56 ƚ 13% (30 min post-rehydration); 74 ƚ 9% (2 h post-rehydration); 99 ƚ 1% (24 h post-rehydration); 95 ƚ 2% (48 h post rehydration). Mean ƚ SEM activity (N = 6) for UPW-dehydrated tardigrades: 2 ƚ 2% (5 min post-rehydration); 19 ƚ 4% (30 min post-rehydration); 30 ƚ 4% (2 h post-rehydration); 99 ƚ 1% (24 h post-rehydration); 92 ƚ 3% (48 h post-rehydration). *Significant difference (P ≤ 0.05) between activity of SW- and UPW-desiccated tardigrades, at the given time point.

Figure 1 in Tun formation is not a prerequisite for desiccation tolerance in the marine tidal tardigrade Echiniscoides sigismundi

Figure 1. Scanning electron micrographs: A, active hydrated Echiniscoides sigismundi (frontal view); B, tun (dorsal view) formed during dehydration from seawater; C, E. sigismundi dried from ultrapurified water (dorsal view). Scale bars: 20 µm.

Figure 3 in First detailed observations on tardigrade mating behaviour and some aspects of the life history of Isohypsibius dastychi Pilato, Bertolani & Binda 1982 (Tardigrada, Isohypsibiidae)

Figure 3. Posterior half of male body. In all structures (indicated by arrows) spermatozoa are visible. A, testis; B, spermatic duct (second one not visible); C and D, seminal vesicles in the two spermatic ducts; E, cloaca.

Figure 2 in First detailed observations on tardigrade mating behaviour and some aspects of the life history of Isohypsibius dastychi Pilato, Bertolani & Binda 1982 (Tardigrada, Isohypsibiidae)

Figure 2. Mating position of Isohypsibius dastychi. The male (left) held the female (right) in the moulting stage, with eggs (in this case three) clearly visible in her ovary.

Figure 4 in First detailed observations on tardigrade mating behaviour and some aspects of the life history of Isohypsibius dastychi Pilato, Bertolani & Binda 1982 (Tardigrada, Isohypsibiidae)

Figure 4. Cloaca (indicated by arrow) of two individuals of Isohypsibius dastychi. The cuticle opens anteriorly. A, cuticle covering the cloaca is pushed towards posterior end of the animal. B, cuticle in the natural state. Scale bar = 10 µm.

Figure 1. A in First detailed observations on tardigrade mating behaviour and some aspects of the life history of Isohypsibius dastychi Pilato, Bertolani & Binda 1982 (Tardigrada, Isohypsibiidae)

Figure 1. A, average procedure of life events and generation time of Isohypsibius dastychi at two different temperatures, 12 and 20 °C (N12 °C = 21, N20 °C = 25). Squares and dotted lines indicate average hatching events at 12 and 20 °C, respectively. B, cumulative events of individual tardigrades becoming adults in dependence of age (days after egg deposition) at two different temperatures, 12 and 20 °C (N12 °C = 21, N20 °C = 25). C, comparison of age at sexual maturity of males and females from different clutches at two different temperatures (12 and 20 °C). Each dot stands for one animal reaching sexual maturity.

opennotspecifiedJan 2023View details →

FIGURE 1 in Larva description and phylogenetic position of the armoured tardigrade Acanthechiniscus goedeni (Grigarick, Mihelčič & Schuster, 1964)

FIGURE 1. Acanthechiniscus goedeni, habitus and dorsal plates ornamentation under LCM; A. Larva (S198_SL1_A) in ventral view; B. the same larva (S198_SL1_A) in dorsal view; C. Adult (S1913_SL1_A) in dorsal view; D. Pseudosegmental and caudal plates of the larva (S198_SL1_A). E. Pseudosegmental and caudal plates of the adult (S1904_SL1_A). Arrowheads indicate the lateral spines and filaments in positions B, C and D, respectively. Scale bars: 50 µm.

opennotspecifiedJan 2023View details →

FIGURE 2 in Larva description and phylogenetic position of the armoured tardigrade Acanthechiniscus goedeni (Grigarick, Mihelčič & Schuster, 1964)

FIGURE 2. Phylogenetic placement of Acanthechiniscus goedeni based on a Maximum Likelihood reconstruction of concatenated SSU and LSU fragments. GenBank accession numbers are indicated as (SSU + LSU). Numbers above branches represent ML bootstrap values. Nodes with bootstrap <70% were collapsed. Scale bar indicates the number of substitutions/sites. In bold: newly sequenced taxa. Shadowed boxes highlight the three genera in the Cornechiniscus clade. The sequences downloaded from GenBank were produced by: Jørgensen & Kristensen (2004), Jørgensen et al. (2011), Gąsiorek & Michalczyk (2020) and Vončina et al. (2020).

dryad32/100

Data from: Cretaceous amber inclusions illuminate the evolutionary origin of tardigrades

Open the record for dataset details and reuse information.

publicAug 2024View details →

Fig. 23 in Integrative taxonomy identifies two new tardigrade species (Eutardigrada: Macrobiotidae) from Greenland

Fig. 23. Tenuibiotus cf. voronkovi (Tumanov, 2007) from the Edgeøya population, body cuticle and eggs seen in PCM. A. Uniformly distributed granulation on the dorsal side of the body at the level between leg pairs II and III. B–D. Three different eggs under 1000× magnification. Scale bars in μm.

Fig. 15 in Integrative taxonomy identifies two new tardigrade species (Eutardigrada: Macrobiotidae) from Greenland

Fig. 15. Tenuibiotus zandrae sp. nov. Buccal apparatus and the oral cavity armature seen in LCM. A. Dorso-ventral projection of the entire buccal apparatus (holotype, IZiBB, slide GL.011.17, PCM). B–C. Oral cavity armature seen in NCM, dorsal (B, paratype) and ventral (C, holotype) view, respectively. D–E. Placoid morphology seen in NCM, dorsal (D) and ventral (E) view, respectively (both holotype). Filled flat arrowheads indicate faintly visible second band of teeth in the oral cavity, empty flat arrowheads indicate the third band of teeth in the oral cavity, empty indented arrowheads indicate central constrictions in the first macroplacoids and the subterminal constriction in the second macroplacoid. Scale bars in μm.

Fig. 7 in Integrative taxonomy identifies two new tardigrade species (Eutardigrada: Macrobiotidae) from Greenland

Fig. 7. Macrobiotus engbergi sp. nov. Egg chorion morphology seen in PCM. A. Midsection under 400× magnification. B–C. Midsection under 1000× magnification. D–E. Terminal discs under 1000× magnification. F–G. Surface under 1000× magnification. Scale bars in μm.

Fig. 6 in Integrative taxonomy identifies two new tardigrade species (Eutardigrada: Macrobiotidae) from Greenland

Fig. 6. Macrobiotus engbergi sp. nov. The oral cavity armature seen in SEM (paratypes). A–B. The oral cavity armature seen in SEM from different angles, dorsal (A) and ventral (B) view, respectively. Filled indented arrowheads indicate the first band of teeth in the oral cavity, filled flat arrowheads indicate the second band of teeth in the oral cavity whereas empty flat arrowheads indicate the third band of teeth in the oral cavity. Scale bars in μm.

Fig. 3 in Integrative taxonomy identifies two new tardigrade species (Eutardigrada: Macrobiotidae) from Greenland

Fig. 3. Macrobiotus engbergi sp. nov. Cuticular structures on legs (paratypes). A–B. External granulation on leg III and II seen in PCM (A) and SEM (B), respectively. C–D. A cuticular bulge (pulvinus) and a faint cuticular fold, covered by granulation, on the internal surface of legs III seen in PCM (C) and SEM (D), respectively. E–F. Granulation on leg IV seen in PCM (E) and SEM (F). Filled flat arrowheads indicate the cuticular bulge, empty flat arrowheads indicate the faint cuticular fold under the claws whereas filled indented arrowhead indicate double muscle attachments under claws. Scale bars in μm.

Fig. 10 in Integrative taxonomy identifies two new tardigrade species (Eutardigrada: Macrobiotidae) from Greenland

Fig. 10. Tenuibiotus zandrae sp. nov. Habitus. Dorso-ventral projection (holotype, IZiBB, slide GL.011.17, Hoyer's medium, PCM). Scale bars in μm.