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221 results for “Acoela”
FIGURE 15 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 15. Proporus carolinensis sp. nov.; photomicrographs. A, B. Sagittal histological sections. C, D. wholemount stained with Alexa 488 labeled phalloidin and viewed with confocal microscopy. C. Focus on ventrolateral bodywall musculature and mouth. D. Focus on musculature of pharynx. ma, male antrum; sv, seminal vesicle; t, testes.
FIGURE 16 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 16. Photomicrographs of living specimens collected from Lockwoods Folly Inlet, North Carolina. A. Polychoerus caudatus. B. Flagellophora apelti.
FIGURE 12 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 12. Pseudohaplogonaria cerasina sp. nov.; photomicrographs. A. Dorsal view of living specimen. B. Dorsal view of posterior of living specimen. C. Rhabdoid glands. D. Sagittal view of reproductive organs in living specimen. bn, bursal nozzle; cv, chordoid vacuole; p, penis; sb, seminal bursa; sp, sperm.
FIGURE 14 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 14. Proporus carolinensis sp. nov.; photomicrographs of living specimen. A. Ventral view of of whole animal. B. Rhabdoid glands.
FIGURE 7 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 7. Conaperta earnhardti sp. nov.; photomicrographs. A. Ventral view of living specimen. B. Sagittal view of reproductive organs in living specimen. C. Sagittal histological section. bn, bursal nozzle; e, egg; p, penis; sb, seminal bursa; sph, muscular sphincter surrounding vagina; sv, seminal vesicle.
FIGURE 8 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 8. Conaperta earnhardti sp. nov.; wholemount stained with Alexa 488 labeled phalloidin and viewed with confocal microscopy. A. Projection of ventral bodywall musculature. For explanation of muscle patterns see Hooge (2001). B. Projection of musculature associated with reproductive organs. C. Projection showing penis musculature inside of seminal vesicle. cm, circular muscles; cop, male copulatory aparatus; lpm, longitudinal penis muscle; m, mouth; p, penis; sph, muscular sphincter surrounding vagina; u, Ushaped muscles; vcm, ventral crossover muscles.
FIGURE 2 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 2. Anaperus singularis sp. nov.; photomicrographs of living specimen. A. Wholemount. B. Focus on epidermal cells and mucoid glands. C. Gland secretions in body wall. D. Dorsal view of posterior. a, adenodactyls; bn, bursal nozzle; cop, male copulatory apparatus; e, egg; mg, mucoid glands; sb, seminal bursa; sp, sperm.
FIGURE 5 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 5. Diopisthoporus lofolitis sp. nov.; photomicrographs. A. Dorsal view of whole animal. B. Frontal histological section of whole animal. C. Lateral view of wholemount stained with Alexa 488 labeled phalloidin and viewed with confocal microscopy. e, egg; fg, frontal gland; fsv, false seminal vesicle; ma, male antrum; ph, pharynx; sp, sperm; st, statocyst; sv, seminal vesicle.
FIGURE 3 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 3. Anaperus singularis sp. nov.; photomicrographs. A. Sagittal histological section. B. Sagittal histological section of posterior. C. Wholemount stained with Alexa 488 labeled phalloidin and viewed with confocal microscopy. Projection of musculature associated with male copulatory organ. a, adenodactyl; bn, bursal nozzle; cop, male copulatory apparatus; e, egg; mg, mucoid glands; p, penis; sb, seminal bursa; sp, sperm.
FIGURE 10 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 10. Kuma flava sp. nov.; photomicrographs of living specimen. A. Wholemount. B. Dorsal view of posterior. e, egg; ma, male antrum; mg, mucoid glands; sv, seminal vesicle.
FIGURE 3 in Two new acoels (Acoela, Platyhelminthes) from the central coast of California
FIGURE 3. Wholemount of Haplogonaria phyllospadicis sp. nov. stained with Alexa 488 labeled phalloidin and viewed with confocal microscopy. Left side, projection of dorsal bodywall musculature; right side, projection of ventral bodywall musculature. For explanation of muscle patterns see Hooge (2001).
Fig. 8 in The Acoela: on their kind and kinships, especially with nemertodermatids and xenoturbellids (Bilateria incertae sedis)
Fig. 8 The Acoela/Acoelomorpha in different schemes of eumetazoan relationships. a Precladistic version assuming a small planula-like worm as the ancestor of all bilaterians and with acoels as its direct descendants (after Hyman 1951). b Scheme based on morphological characters; the Acoela is part of the Acoelomorpha, which is placed within the Platyhelminthes (after Westheide and Rieger 2007). c Phylogeny according to rDNA (Wallberg et al. 2007); the Acoelomorpha
Fig. 5 a in The Acoela: on their kind and kinships, especially with nemertodermatids and xenoturbellids (Bilateria incertae sedis)
Fig. 5 a Image of a live specimen of Convolutriloba retrogemma reproducing asexually by budding. White arrowheads point to buds. Note the reversed polarity. b, c CLSM projections showing muscles (blue) and serotoninlike immunoreactive nervous system (red) in dorsal (b) and central (c) planes of a mature Isodiametra pulchra. White arrowheads point to neurite bundles, asterisk marks the position of the statocyst. Scale bars: a 1 mm; b and c 50 μm
Fig. 3 in The Acoela: on their kind and kinships, especially with nemertodermatids and xenoturbellids (Bilateria incertae sedis)
Fig. 3 Image of a mature and live specimen of Isodiametra pulchra without (left) and with superimposed colors (right) to illustrate the general morphology of acoels. From top to bottom: yellow: frontal organ (fo); red: nervous system (ns); green: central syncytium (cs); cyan: testes (t); pink: ovaries (o); gray: mouth; purple: female copulatory organs (fco) composed of seminal bursa, bursal nozzle, and vestibulum (from posterior to anterior); white: chordoid vacuoles (cv); blue: false seminal vesicles and prostatoid glands (fsv); orange: male copulatory organ (cop) composed of muscular seminal vesicle and invaginated penis. Scale bar: 100 μm
Fig. 1 in The Acoela: on their kind and kinships, especially with nemertodermatids and xenoturbellids (Bilateria incertae sedis)
Fig. 1 Images of various live acoels found in a beaker of sublittoral sand from the Indian Ocean. Animals are oriented with the anterior end to the top. Note the statocyst in all and mature oocytes in some animals. Scale bar: 200 μm
Fig. 6 in The Acoela: on their kind and kinships, especially with nemertodermatids and xenoturbellids (Bilateria incertae sedis)
Fig. 6 Female copulatory organs in Isodiametra pulchra. a Image of female copulatory organs in a live and squeezed specimen. Note the mass of elongated and convoluted sperm in the seminal bursa (sb) that merge towards the bursal nozzle (arrowhead) and a few "heads" extending into the vestibulum (ve). Asterisk marks bursal stalk connecting the bursa with the digestive parenchyma, arrowhead points to
Fig. 4 in The Acoela: on their kind and kinships, especially with nemertodermatids and xenoturbellids (Bilateria incertae sedis)
Fig. 4 Electron micrographs of structures with phylogenetic significance. a Statocyst of a hatchling of Isodiametra pulchra with two parietal cells (p) and a lithocyte (l). b Sperm of Convoluta niphoni (Convolutidae) with axial microtubules (white arrow) and axonemes without central microtubules (white arrowheads). c Extrusion
Fig. 2 in The Acoela: on their kind and kinships, especially with nemertodermatids and xenoturbellids (Bilateria incertae sedis)
Fig. 2 Images of sensory structures of live Symsagittifera roscoffensis. a Hatchling. Arrowheads point to eyes, arrow to statocyst. Note absence of symbionts and presence of orange rhabdoids. b Anterior end of adult with symbionts and rhabdoids. White arrowheads point to
FIGURE 11 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 11. Pseudohaplogonaria cerasina sp. nov.; reconstructions to show arrangement of organs. A. Dorsal reconstruction of whole specimen. B. Sagittal reconstruction of whole organism. C. Sagittal reconstruction of reproductive structures. bn, bursal nozzle; cop, male copulatory apparatus; cs, digestive central syncytium; cv, chordoid vacuole; e, egg; fg, frontal gland; m, mouth; mgp, male gonopore; p, penis; rh, rhabdoid gland; sb, seminal bursa; sp, sperm; st, statocyst; t, testes.
FIGURE 4 in New acoels (Acoela, Acoelomorpha) from North Carolina
FIGURE 4. Diopisthoporus lofolitis sp. nov.; sagittal reconstruction of whole organism to show arrangement of organs. e, egg; fg, frontal gland; gc, gland cells; fsv, false seminal vesicle; m, mouth; ma, male antrum; mgp, male gonopore; ph, pharynx; st, statocyst; sv, seminal vesicle; t, testes.
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