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106 results for “Arthrotardigrada”
FIGURE 2 in Quisarctus yasumurai gen. et sp. nov. (Arthrotardigrada: Halechiniscidae) from a submarine cave, off Iejima, Ryukyu Islands, Japan
FIGURE 2. Phase contrast micrographs of Quisarctus yasumurai gen. et sp. nov. (A) Composite image: dorsal view of holotype [KUZ Z1649], scale bar= 50 µm; (B) composite image: ventral view of holotype [KUZ Z1649], scale bar= 50 µm; (C) leg I digits of paratype [KUZ Z1650], scale bar= 5 µm; (D) leg IV digits of paratype [KUZ Z1650], scale bar= 5 µm; (E) stylet support (white arrow head) of paratype [KUZ Z1650], scale bar= 10 µm; (F) seminal vesicle (hollow arrow head) of paratype [KUZ Z1650], scale bar= 10 µm.
FIGURE 1. Batillipes acuticauda n in A new Batillipedidae (Tardigrada, Arthrotardigrada) from Argentina
FIGURE 1. Batillipes acuticauda n. sp. (MACN 39773-Ty): A, anterior body of the holotype (arrow: head-body constriction); B, posterior body of the holotype (arrows indicate the position of the gonopore and anus); C, detail of the caudal appendage. Scale bars A-B-C: 15 µm.
FIGURE 17 in The tardigrade fauna of Australian marine caves: With descriptions of nine new species of Arthrotardigrada
FIGURE 17. SEM of two-clawed larva of Tholoarctus oleseni nov. sp. (ventral view). Note that the outer epicuticle has not yet formed. Abbreviations: cA—lateral cirrus A; cE—cirrus E; ec—external cirrus; ic—internal cirrus; id – internal digits; pc—primary clava; ta—tarsus.
FIGURE 14 in The tardigrade fauna of Australian marine caves: With descriptions of nine new species of Arthrotardigrada
FIGURE 14. LM of Raiarctus katrinae nov. sp. A. Dorsal rows of pillars. B. Buccal apparatus. Abbreviations: bt—buccal tube; cE—cirrus E; cp—caudal pillar; fp—frontal pillar; lp—lateral pillar; pc—primary clava; pl—placoids; ro—row of pillars; ss—stylet support; st—stylet.
FIGURE 5 in Three new Batillipes species (Arthrotardigrada: Batillipedidae) from the Brazilian coast
FIGURE 5. Batillipes dandarae sp. nov. A. Anterior portion of the body of the holotype showing cephalic appendages (ciinternal cirrus; cl—lateral cirrus); clavae (pc—primary clava; sc—secondary clava), first body projection (pr1) and blunt enlargement in the scapular region (sr); B. Leg I of a paratype showing the leg spine (pI) inserted on the posterior part of the leg and turning frontwards, mo—mouth; C. Detail of the female gonopore (go) and anus (an) of the holotype. Scale bars = 10 µm.
FIGURE 6 in Three new Batillipes species (Arthrotardigrada: Batillipedidae) from the Brazilian coast
FIGURE 6. Batillipes potiguarensis sp. nov. A. Drawing (dorsal view); B. Habitus (dorsal view of a paratype); C. Detail of clavae (pc—primary clava; sc—secondary clava), first body projection (pr1) and leg spine of the first leg (pI) of the holotype; D. Toes (t1–t6) of the leg IV of a paratype; E—Gonopore (go) and anus (an) of the holotypic female. Scale bars: A–B = 50 µm; C–E = 10 µm.
FIGURE 2 in Three new Batillipes species (Arthrotardigrada: Batillipedidae) from the Brazilian coast
FIGURE 2. Batillipes brasiliensis sp. nov. A. Drawing (ventral view); B. Habitus (ventral view); C. Detail of the head showing cephalic appendages (cm—median cirrus; ci—internal cirrus; cl—lateral cirrus); D. Anterior portion of the body showing clavae (pc—primary clava; sc—secondary clava), first body projection (pr1) and leg projection of the first leg (lpI). Scale bars: A–B = 50 µm; C–D = 10 µm.
FIGURE 4 in Three new Batillipes species (Arthrotardigrada: Batillipedidae) from the Brazilian coast
FIGURE 4. Batillipes dandarae sp. nov. A. Drawing (dorsal view); B. Habitus (dorsal view); C. Detailed drawing of the female gonopore (go) and anus (an); D. Dorsal view of the head showing the median cirrus (cm) and the eye (ey); E. Ventral view of the head showing the buccal cone (bc) and the external cephalic cirrus (ce). Scale bars: A–B = 50 µm; C–E = 10 µm.
FIGURE 3 in Three new Batillipes species (Arthrotardigrada: Batillipedidae) from the Brazilian coast
FIGURE 3. Batillipes brasiliensis sp. nov. A. Detail of the two first legs of a paratype showing first body projections (pr1; pr2), leg projections (lpI; lpII) and first leg spine (pI); B. Posterior portion of the body of a paratype showing the body projection between legs III and IV (pr4) and sensorial organ of leg IV (pIV); C. Caudal ala (ca) and body projection between legs III and IV (pr4) of the holotype; D. Toes (t1–t6) of the leg IV of the holotype; E—Detail of the female gonopore (go) and anus (an) of the holotype; F. Detail of the gonopore (go) and anus (an) of the allotypic male. Scale bars = 10 µm.
FIGURE 5 in First record of a deep-sea tardigrade from the South China Sea, Halechiniscus janus sp. nov. (Arthrotardigrada: Halechiniscidae)
FIGURE 5. Halechiniscus janus sp. nov.— genital structures: A. Schematic drawing of the female genital structures (scale bar=10 µm); B. Female genital structures in paratype B6418400028 (DIC photo, scale bar=10 µm) and paratype B6418400027 (upper left small insert); C. Male gonopore in a paratype B6418500026 (DIC photo, scale bar=10 µm); D. Male gonopore in a paratype (B6418400022, SEM photo, scale bar=4 µm); Abbreviations: an—anus; go—gonopore; sdo—seminal receptacle duct opening; sdp—seminal receptacle duct pouch; sdu—seminal receptacle duct; sr—seminal receptacle.
FIGURE 4 in First record of a deep-sea tardigrade from the South China Sea, Halechiniscus janus sp. nov. (Arthrotardigrada: Halechiniscidae)
FIGURE 4. Halechiniscus janus sp. nov.— leg sensory organs, legs and digits: A. Sensory organ on leg I, showing the divided terminal portion (paratype B6418400012, SEM photo, scale bar=4 µm); B. cirrus E (paratype B6418400012, SEM photo, scale bar=3 µm); C. Sensory organ on leg IV (paratype B6418400021, SEM photo, scale bar=4 µm); D. Sensory organ on leg IV, showing van der Land's body and bipartite tip (DIC photo of holotype B6418400009, scale bar=10 µm); E. Digits and claws on leg IV of a paratype (B6418400012, SEM photo, scale bar=3 µm); F. Digits and claws on leg IV of a paratype B6418400028 (DIC photo, scale bar=10 µm). Abbreviations: ce—cirrus E; ed—external digit; id—internal digit; p1—sensory organ on leg I; p4—sensory organ on leg IV; van—van der Land's body; tip—tip of sensory organ on leg IV.
FIGURE 2 in First record of a deep-sea tardigrade from the South China Sea, Halechiniscus janus sp. nov. (Arthrotardigrada: Halechiniscidae)
FIGURE 2. Halechiniscus janus sp. nov.—general morphology: A. Drawing based on the holotype B6418400009 (scale bar=20 µm); B. Dorsal view (SEM photo of a paratype, B6418400021, scale bar=10 µm); C. Lateral view (SEM photo of a paratype, B6418400012, scale bar=10 µm). Abbreviations: bt—buccal tube; ca—cirrus A; ce—cirrus E; ec—external cirrus; go—gonopore; ic—internal cirrus; mc—median cirrus; p1–p4—sensory organs on legs I–IV; pb—pharyngeal bulb; pc—primary clava; sc—secondary clava; st—stylet.
FIGURE 1 in First record of a deep-sea tardigrade from the South China Sea, Halechiniscus janus sp. nov. (Arthrotardigrada: Halechiniscidae)
FIGURE 1. Map of collecting sites in the South China Sea. Codes correspond to site codes in Table 1 (map made by Ocean Data View, Schlitzer, Reiner, Ocean Data View, odv.awi.de, 2021).
FIGURE 1 in Actinarctus doryphorus (Tanarctidae) DNA barcodes and phylogenetic reinvestigation of Arthrotardigrada with new A. doryphorus and Echiniscoididae sequences
FIGURE 1. Actinarctus doryphorus specimens sampled at Roscoff, France, of which the cytochrome c oxidase subunit I (COI), 18S and 28S rDNA fragments were amplified. Light microscopic images of live animals. Characteristics of the species include e.g. telescopic legs (le) with four-terminal toes (to), the cuticular wing-like structure (alae), which contains epicuticular pillars (pi) and a set of head appendages, including external cirri (ec), internal cirri (ic) and primary clavae (pc) (see Persson et al. 2019 for more details). A. Specimen 06, presumably female. B. Specimen 07, presumably juvenile. C. Specimen 08, presumably male. D. Specimen 10, presumably juvenile. E. Specimen 12, female. F. Specimen 17, presumably juvenile. G. Specimen 18, presumably female. H. Specimen 22, presumably male. I. Specimen 23, presumably male. COI was obtained from all specimens, 18S from specimen no. 08, 10, 12, 17 and 18, and 28S from specimen no. 08 and 10. Specimens in A, C, E, F, H and I are seen ventrally, whereas B, D and G are seen dorsally. Anterior is up (and left in D, F). Pharyngeal bulb (pb), sensory organ of the fourth leg (p4). Scale bar = 20 µm in D, F otherwise 30 µm.
FIGURE 4 in Actinarctus doryphorus (Tanarctidae) DNA barcodes and phylogenetic reinvestigation of Arthrotardigrada with new A. doryphorus and Echiniscoididae sequences
FIGURE 4. Phylogenetic tree inferred from BI analyses of the combined 18S/28S rDNA dataset. Unavailable 18S sequences were substituted with N's (indicated by "no 18S"). Actinarctus doryphorus is placed together with Tanarctus and Arthrotardigrada is inferred to be paraphyletic. Posterior probabilities (upper value) relating to BI analyses and bootstrap values (lower) from ML analyses are shown at the nodes. (–) indicates bootstrap values <50.
FIGURE 3 in Actinarctus doryphorus (Tanarctidae) DNA barcodes and phylogenetic reinvestigation of Arthrotardigrada with new A. doryphorus and Echiniscoididae sequences
FIGURE 3. Phylogenetic tree inferred from BI analyses of the 18S rDNA dataset. Arthrotardigrada is inferred to be paraphyletic. Posterior probabilities (upper value) relating to BI analyses and bootstrap values (lower) from ML analyses are shown at the nodes. (–) indicates bootstrap values <50.
FIGURE 2 in Actinarctus doryphorus (Tanarctidae) DNA barcodes and phylogenetic reinvestigation of Arthrotardigrada with new A. doryphorus and Echiniscoididae sequences
FIGURE 2. Phylogenetic tree inferred from BI analyses of the 28S rDNA dataset. Actinarctus doryphorus is placed together with Tanarctus sequences within a maximum supported Tanarctidae. Arthrotardigrada is inferred to be paraphyletic. Posterior probabilities (upper value) relating to BI analyses and bootstrap values (lower) from ML analyses are shown at the nodes. (–) indicates bootstrap values <50.
FIGURE 3 in A new species of Batillipes (Arthrotardigrada: Batillipedidae) from the mid littoral zone of the southeast coast of India
FIGURE 3. Batillipes kalami sp. nov., (A) LM image of dorsal view of holotype female [MB/SBN/VD9] showing lateral body projections; (B) DIC image of dorsal view of paratype male [MB/SBN/VD14] showing toe patterns of leg I–IV; Bp, body projection.
FIGURE 5 in A new species of Batillipes (Arthrotardigrada: Batillipedidae) from the mid littoral zone of the southeast coast of India
FIGURE 5. Batillipes kalami sp. nov., LM images of (A) cephalic region showing head indentation; (B) ventral view of cephalic region showing mouth opening and toe pattern of first pair of legs; (C) ventral view of caudal region showing female gonopore and toe pattern of fourth pair of legs. ic, internal cirrus; lc, lateral cirrus; i, indentation; mo, mouth opening; go, gonopore.
FIGURE 4 in A new species of Batillipes (Arthrotardigrada: Batillipedidae) from the mid littoral zone of the southeast coast of India
FIGURE 4. Batillipes kalami sp. nov., (A) DIC image of cephalic appendages; (B) LM image of the buccal apparatus and fine punctations on ventral cuticle; (C) PCM image of leg IV sensory organ; (D) DIC image of caudal region showing cirrus E; mc, median cirrus; ec, external cirrus; pc, primary clava; st, stylet; bt, buccal tube; pl, placoids; p, punctations; L–IV s, leg IV sensory organ; cE, cirrus E.
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