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FIGURES 1 – 2 in Re-description of the Arctic tardigrade Tenuibiotus voronkovi (Tumanov, 2007) (Eutardigrada; Macrobiotidea), with the first molecular data for the genus

FIGURES 1 – 2. Tenuibiotus voronkovi — habitus: 1 - dorso-ventral projection, exoskeleton after DNA extraction (PCM); 2 - dorso-ventral projection (DIC).

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FIGURES 7 – 8 in Re-description of the Arctic tardigrade Tenuibiotus voronkovi (Tumanov, 2007) (Eutardigrada; Macrobiotidea), with the first molecular data for the genus

FIGURES 7 – 8. Tenuibiotus voronkovi — claws of leg IV seen in PCM: 7 — arrowhead indicate accessory points; 8 — dentate lunules and granulation.

opencc-by-4.0Jun 2022View details →

Fig. 4 in Sisubiotus hakaiensis sp. nov. (Tardigrada, Macrobiotidae), a new tardigrade species from Calvert Island (British Columbia, Canada)

Fig. 4. Sisubiotus hakaiensis sp. nov., buccal-pharyngeal apparatus in PCM. A, D–E. Paratype (JYUt. S1911_SL4_C). B–C. Paratype (JYUt.S1911_SL2_B). A. In toto buccal-pharyngeal apparatus. B–C. Placoids, arrowheads indicate constrictions in the macroplacoids. D *. Dorsal Oral Cavity Armature (OCA), empty arrowheads indicate the three bands of the OCA. E*. OCA, empty arrowheads indicate the three bands of the OCA. Deep-focus images obtained by stacking are indicated in the figures caption with an asterisk (*). Scale bars: A = 50 μm; B–E = 20 μm.

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Fig. 1 in Sisubiotus hakaiensis sp. nov. (Tardigrada, Macrobiotidae), a new tardigrade species from Calvert Island (British Columbia, Canada)

Fig. 1. Bayesian phylogenetic placement of the new species of Sisubiotus Stec, Vecchi, Calhim & Michalczyk, 2021. Values above/below branches are Bayesian posterior probability values. Scale bar indicates mutations/site.

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Fig. 3 in Sisubiotus hakaiensis sp. nov. (Tardigrada, Macrobiotidae), a new tardigrade species from Calvert Island (British Columbia, Canada)

Fig. 3. Sisubiotus hakaiensis sp. nov., claws in PCM. A*, C. Paratype (JYUt.S1911_SL3_A). Claws II– III. B, D. Holotype (JYUt.S1911_SL5_B). Claws IV. Arrowhead indicates horseshoe-shaped structure under claws IV. Deep-focus images obtained by stacking are indicated in the figures caption with an asterisk (*). Scale bars =10 μm.

Fig. 9 in , a New Tardigrade Species in the Complex from China.

Fig. 9. Macrobiotus hupingensis sp. nov. from China (paratypes) – eggs seen with PCM: A–B, surface under ×1000 magnification of egg; C–F, midsections of four different egg processes. Arrows indicate thickening perpendicular to the process base that divides the areola in the middle, double arrowhead indicates areas of the egg processes without reticulation/labyrinthine layer, and indented arrowheads indicate irregular collar around process bases. Scale bars in μm.

Fig. 7 in , a New Tardigrade Species in the Complex from China.

Fig. 7. Macrobiotus hupingensis sp. nov. from China (paratype) – buccal apparatus seen with PCM: A, an entire buccal apparatus; B–C, the oral cavity armature, dorsal and ventral teeth, respectively; D–E, placoid morphology, dorsal and ventral placoids, respectively. Arrows indicate the second band of teeth, indented arrowheads indicate the third band of teeth, double arrowhead indicates central and subterminal constrictions in the first and second macroplacoid. Scale bars in μm.

Fig. 11 in , a New Tardigrade Species in the Complex from China.

Fig. 11. Macrobiotus hupingensis sp. nov. from China (paratypes) – reproduction (PCM): A, spermatheca (seminal vesicle) filled with spermatozoa and visible in females freshly mounted in Hoyer's medium; B, testis filled with sperm visible in a male freshly mounted in Hoyer's medium. The indented arrowhead indicates the female spermathecae, double arrowhead indicates the testis, and the arrows indicate gibbosity on the IV leg. Scale bars in μm.

Fig. 6 in , a New Tardigrade Species in the Complex from China.

Fig. 6. Macrobiotus hupingensis sp. nov. from China (paratypes) – claw morphology: A–B, claws II and IV seen with PCM; C, magnification of lunulae IV seen with PCM; D–E, claws I and IV seen with SEM; F, magnification of lunulae IV seen with SEM. Indented arrowhead indicates dark circular areas under lunulae on the first three pairs of legs, double arrowheads indicate double muscle attachments under claws, arrows indicate cuticular bar above muscle attachments, bent arrows indicate horseshoe structure connecting the anterior and the posterior claw. Scale bars in μm.

Fig. 5 in , a New Tardigrade Species in the Complex from China.

Fig. 5. Macrobiotus hupingensis sp. nov. from China seen in SEM (paratypes) – body and leg cuticle morphology seen with SEM: A, cuticle on the last body segment without caudal band of granulation; B, granulation on the external surface of leg III; C, internal surface of leg II with evident pulvinus; D, granulation on dorsal surface of leg IV. Scale bar in μm.

Fig. 4 in , a New Tardigrade Species in the Complex from China.

Fig. 4. Macrobiotus hupingensis sp. nov. from China seen in PCM (paratypes) – body and leg cuticle morphology seen with PCM: A, cuticle on the last body segment without caudal band of granulation; B, granulation on the external surface of leg II; C, internal surface of leg III with evident pulvinus; D, granulation on dorsal surface of leg IV. Filled indented arrowheads indicate granulation on the legs, arrow indicates pulvinus on the III leg. Scale bar in μm.

Fig. 2 in , a New Tardigrade Species in the Complex from China.

Fig. 2. Results of PCA of animal pt indices and egg raw measurements. A, Animal pt indices, 1st and 2nd Principal Components; B, Egg measurements, 1st and 2nd Principal Components; Top-left quadrants: score scatter plots; Top-right quadrants: long plot; bottom-left and right quadrants: boxplots of single component scores.

Fig. 1 in , a New Tardigrade Species in the Complex from China.

Fig. 1. Maximum Likelihood tree of the Macrobiotus pallarii complex, obtained from 19 nucleotide COI sequences. Bootstrap values> 50% are provided at major nodes for ML tree calculation methods. The results of species delimitation are indicated by vertical bars. Sequences generated in the course of the present study are given in red box line.

Fig. 8 in , a New Tardigrade Species in the Complex from China.

Fig. 8. Macrobiotus hupingensis sp. nov. from China (paratype) – the oral cavity armature seen with SEM: A–B, the oral cavity armature of a single specimen seen with SEM from different angles showing dorsal and ventral portion, respectively. Arrows indicate the first band of teeth, indented arrowheads indicate the second band of teeth, double arrowhead indicates the third band of teeth. Scale bars in μm.

Fig. 3 in , a New Tardigrade Species in the Complex from China.

Fig. 3. Macrobiotus hupingensis sp. nov. from China seen in PCM (holotype, Hoyer's medium) – habitus, adult specimen in dorso-ventral projection. Scale bar in μm.

Fig. 10 in , a New Tardigrade Species in the Complex from China.

Fig. 10. Macrobiotus hupingensis sp. nov. from China (paratypes) – eggs seen with SEM: A, entire view of the egg (missing a process); B–F, details of the egg surface between processes, areolation and egg processes. The arrows indicate thickening perpendicular to the process base, which divides the areola in the middle, indented arrowheads indicate irregular collar around process bases, and double arrowheads indicate pores on the surface of egg processes. Scale bars in μm.

Fig. 6 in Tolerance to Anhydrobiotic Conditions Among Two Coexisting Tardigrade Species Differing in Life Strategies.

Fig. 6. Relation of the measured activity indices to time spent in the tun stage in Milnesium inceptum: (A) time to first movement of any first individual (FM); (B) time to first movement of all individuals (FAA); (C) time to full activity of any first individual (FA); (D) time to full activity of all individuals (FAA). Curves were ± SE fitted with Local Polynomial Regression Fitting (LOESS).

Fig. 5 in Tolerance to Anhydrobiotic Conditions Among Two Coexisting Tardigrade Species Differing in Life Strategies.

Fig. 5. Relationship between the measured activity indices and time spent during the tun stage for Ramazzottius subanomalus: (A) time to first movement of any first individuals (FM); (B) time to first movement of all individuals (FAA); (C) time to full activity of any first individual (FA); (D) time to full activity of all individuals (FAA). Curves ± SE were fitted with Local Polynomial Regression Fitting (LOESS).

Fig. 3. A in Tolerance to Anhydrobiotic Conditions Among Two Coexisting Tardigrade Species Differing in Life Strategies.

Fig. 3. A time from the start of rehydration to the first movement (FM) of any first individual and all individuals (FMA) in the experimental groups representing increasing duration of the tun stage for Milnesium inceptum (A, C) and Ramazzottius subanomalus (B, D). The number of replicate samples for each group n = 10.

Fig. 4. A in Tolerance to Anhydrobiotic Conditions Among Two Coexisting Tardigrade Species Differing in Life Strategies.

Fig. 4. A time from the start of rehydration to the full activity (FA) of any first individual and all individuals (FAA) in the experimental groups representing increasing duration of the tun stage for Milnesium inceptum (A, C) and Ramazzottius subanomalus (B, D). The number of replicate samples for each group n = 10.