An acoel flatworm, foraging. (tropical aquarium, Caribbean community)
This animal is about 2mm long.
Identification courtesy of Chris Laumer and Seth Tyler.
[taxonomy:order=Acoela]
A. Ventral view of whole animal. B: Midsaggital section through body. D: spermatozoon. D: Scheme of epidermis.,= E,F: Epidermal cilia. tip (E) and bases showing rootlets (F); anterior=or toward right. (A-C after Ax, 1963 after Westblad, 1949; D after Reisinger, 1960; E and F after Franzen ad Afzelius, 1987). bm, basement membrane; cg, ciliated groove; e, egg; gc, gland cell; m, mouth; n, nerve plexus; sc sensory cell; st statocyst; tw, terminal web.
c, Ventral view of the holotype SIO-BIC BI1037. Although highly contracted and incomplete (the posterior end was removed and frozen and the ventral area removed for histology), the specimen is still over 10?cm long. The mouth (m), ring furrow (rf) and side furrow (sf) are visible. d, Frame grab of paratype SIO-BIC BI1039, a female in situ. e, Dorsal view of paratype SIO-BIC BI1039 (relaxed) showing ring furrow (rf), side furrow (sf), oocytes in body wall (oo) and part of the ventral surface (v). f, Ventral view of paratype SIO-BIC BI1039 showing the mouth (m), ring furrow (rf), oocytes in body wall (oo) and part of the epidermal ventral glandular network (vgn). g, Close-up of the ventral posterior of paratype SIO-BIC BI1039 showing the trailing off of the ventral glandular network (vgn) and oocytes clearly visible in the body wall. h, Close-up of the ventral anterior of paratype SIO-BIC BI1039 showing the mouth (m), ring furrow (rf) and the beginning of the ventral glandular network (vgn) near the anterior tip of the animal.
Summary[edit] Description: Français : Des vers Acoelomorphes à la Réunion. Date: 26 July 2010, 08:54:49. Source: The uploader on Wikimedia Commons received this from the author/copyright holder. Author: Philippe Bourjon.
Johannes G. Achatz, Marta Chiodin, Willi Salvenmoser, Seth Tyler , Pedro Martinez
Wikimedia Commons
Summary[edit] Description: English: 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 eyes, white arrow to statocyst, black arrow to frontal organ. c Eye of an adult. Asterisk marks nucleus, arrowhead points to concrements. d Statocyst of an adult. Abbreviations: l lithocyte; p parietal cells. Scale bars: a 100 μm; b 50 μm; c 10 μm; d 10 μm. Date: 30 June 2013. Source: https://link.springer.com/article/10.1007%2Fs13127-012-0112-4. Author: Johannes G. Achatz, Marta Chiodin, Willi Salvenmoser, Seth Tyler , Pedro Martinez.
Johannes G. Achatz, Marta Chiodin, Willi Salvenmoser, Seth Tyler , Pedro Martinez
Wikimedia Commons
Summary[edit] Description: English: 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. Date: 30 June 2013. Source: https://link.springer.com/article/10.1007%2Fs13127-012-0112-4. Author: Johannes G. Achatz, Marta Chiodin, Willi Salvenmoser, Seth Tyler , Pedro Martinez.
Summary[edit] Description: Deutsch: Convolutriloba macropyga auf Aquarienscheibe, Unterseite, Knospung, Länge 3,5 mm. Date: 21 December 2019. Source: Own work. Author: AquariaNR.
Perea-Atienza E, Botta M, Salvenmoser W, Gschwentner R, Egger B, Kristof A, Martinez P, Achatz JG
Wikimedia Commons
Summary[edit] Description: English: The acoel Isodiametra pulchra, a "live squeezed specimen" "This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited". Date: 31 July 2013, 10:45:21. Source: Perea-Atienza, E., et al. (2013). Posterior regeneration in Isodiametra pulchra (Acoela, Acoelomorpha). Frontiers in Zoology 10:64. Author: Perea-Atienza E, Botta M, Salvenmoser W, Gschwentner R, Egger B, Kristof A, Martinez P, Achatz JG.
Summary[edit] Description: Xenoturbella japonica holotype female. The white arrowhead indicates the ring furrow. Date: 24 December 2017, 14:26:07. Source: (2017). "A new species of Xenoturbella from the western Pacific Ocean and the evolution of Xenoturbella". BMC Evolutionary Biology 17 (1). DOI:10.1186/s12862-017-1080-2. Author: Hiroaki Nakano, Hideyuki Miyazawa, Akiteru Maeno, Toshihiko Shiroishi, Keiichi Kakui, Ryo Koyanagi, Miyuki Kanda, Noriyuki Satoh, Akihito Omori & Hisanori Kohtsuka.
