Figure 15; SEM images of the trophi. A–F Ramus (“unci”) teeth (ventral sides of the trophi directed upwards) A teeth absent (S. pectinata) B no distinct teeth, only a serrated plate (S. vorax) C teeth distinctly incised (S. gyrina) D teeth distinctly incised and separated into two groups by a deep sulcus (arrow; S. oblonga) E dorsal group of teeth distinctly incised and ventral group of teeth comb-like (S. triophthalma) F dorsal teeth comb-like and ventral teeth distinctly incised, groups of teeth separated by a deep sulcus (arrow; S. baltica) G–J Shape of the lateral fulcrum (normal and dashed arrows) and thickness of the cauda (arrow-heads) (trophi from lateral view, ventral sides directed upwards) G fulcrum blade-like, narrow, distal end not oblique, cauda of medium thickness (S. tremula) H fulcrum machete-like, distal end oblique, cauda of medium thickness (S. oblonga) I fulcrum broad, with distinct dorsal thickening (dashed arrow) and ventral lamella (arrow; S. vorax) J fulcrum axe-shaped, very broad, with oblique distal end, cauda robust (S. longipes) K, L Shape of the hypopharynx (arrow) K small to medium, robust (S. tremula) L broad to very broad, laterally pointed / dagger-like (S. stylata). Scale bar: 20 µm.
Identifier: royalnaturalhist612lyde (find matches)Title: The royal natural historyYear: 1893 (1890s)Authors: Lydekker, Richard, 1849-1915Sclater, Philip Lutley, 1829-1913Frostick, W. B., former owner. DSIBrooks, W. T., former owner. DSISubjects: ZoologyNatural historyPublisher: London and New York : Frederick Warne & Co.Contributing Library: Smithsonian LibrariesDigitizing Sponsor: Smithsonian LibrariesView Book Page: Book ViewerAbout This Book: Catalog EntryView All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book.Text Appearing Before Image:flower-animalcule (magnified 200 times). 443 WORMS. The Thread-Worms, or Round-Worms,—Class Nematohelminthes. These worms are characterised by having a thread-like body, covered withtough, elastic integument, but usually showing no distinct traces of being dividedinto segments like those of leeches and earth-worms, and possessing no trace oflimbs. The sexes are generally distinct. The group is divided into the threeorders Acanthocephali, Nematoidea, and Chaetognatha. Spiny-Headed Thread-Worms,—Order Acanthocephali. In this order is contained the single genus Echinorhynchus, which is appro-priately named for animals possessing a protrusible proboscis, armed with severalrows of backwardly-directed spines. The chief character in which this orderText Appearing After Image:si-iny-headed THREAD-WORM, a, Nat. size; b, Heart enlarged. differs from the next is the lack of any special alimentary canal and digestiveapparatus. In the adult stage the species of Echinorhynchus are found in theintestines of vertebrates; the large species figured above (E. gigas) infesting thepig. But in order to reach its final residence in this host, it has to spend its early THREAD- WORMS. 449 days in the grub or maggot of the cockchafer and allied beetles. These latter arerooted up and devoured by pigs, which thus unconsciously swallow the worm.Similarly, E. proteus of various fish lives in an immature state in the intestine ofthe water-shrimp, which swallowed it while still in the egg; and E. moni-liferus, which occurs adult in such rodents as hamsters and voles, lives duringthe larval state in beetles. Another species, E. polymorphic*, has to be transplantedfrom the body of the water-shrimp into that of a duck to reach maturity. Typical Thread-Worms,—Order Nematoidea. TheNote About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Viviparous Rotifer The photo shows a rare moment - a ‘pregnant’ viviparous rotifer and an embryo inside. Beside the rotifer there are some ciliates. Light microscopy, variable phase contrast
Ana Paula N. Gomes, Omar M. Amin, Natalie Olifiers, Rita de Cassia Bianchi, Joyce G. R. Souza, Helene S. Barbosa & Arnaldo Maldonado Jr.
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Summary[edit] Description: English: Proboscis of Pachysentis lenti. Date: 2019. Source: https://link.springer.com/article/10.2478/s11686-019-00080-6. Author: Ana Paula N. Gomes, Omar M. Amin, Natalie Olifiers, Rita de Cassia Bianchi, Joyce G. R. Souza, Helene S. Barbosa & Arnaldo Maldonado Jr.
Fonseca, Michelle Cristie Gonçalves da, Knoff, Marcelo, Felizardo, Nilza Nunes, Torres, Eduardo José Lopes, Di Azevedo, Maria Isabel Nogueira, Gomes, Delir Corrêa, Clemente, Sérgio Carmona de São, & Iñiguez, Alena Mayo.
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Summary[edit] Description: English: Male juvenile Corynosoma cetaceum with a detail of the proboscis, neck, and trunk spines. Bar on the left is 1mm and the bar on the right is 0.5mm. Date: 13 June 2019. Source: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612019005008108&lng=en&nrm=iso&tlng=en. Author: Fonseca, Michelle Cristie Gonçalves da, Knoff, Marcelo, Felizardo, Nilza Nunes, Torres, Eduardo José Lopes, Di Azevedo, Maria Isabel Nogueira, Gomes, Delir Corrêa, Clemente, Sérgio Carmona de São, & Iñiguez, Alena Mayo.
Summary[edit] Description: English: SEM image of specimens of Rhadinorhynchus oligospinosus Amin & Heckman, 2017 from Scomber japonicus and Trachurus murphyi from off the Pacific coast of Peru. (A) A profile of the anterior part of a male specimen showing the neck and proboscis curvature and the distribution of trunk spines. Date: 22 May 2017, 23:43:53. Source: (2017). "Rhadinorhynchus oligospinosus n. sp. (Acanthocephala, Rhadinorhynchidae) from mackerels in the Pacific Ocean off Peru and related rhadinorhynchids in the Pacific, with notes on metal analysis". Parasite 24: 19. DOI:10.1051/parasite/2017022. ISSN1776-1042. Author: Omar M. Amin and Richard A. Heckmann.
Summary[edit] Description: English: An adult of Moniliformis moniliformis (Acanthocephala: Archiacanthocephala: Moniliformida). Date:. Source: Division of Parasitic Diseases and Malaria (Centers for Disease Control and Prevention). Author: Division of Parasitic Diseases and Malaria team.
Summary[edit] Description: English: Acanthocephalan parasite, Profilicollis altmani from the mole crab, Emerita analoga. Date: September 2008. Source: Own work. Author: T. Goulding.
Summary[edit] Description: English: Pomphorhynchus from Bluefish (Pomatomus saltatrix). Source: http://www.fishdisease.net. Author: Fishdisease.net. Permission(Reusing this file): All pictures on the site were declared to be in the Public Domain – [1].
Summary[edit] Description: English: A photomicrograph of the acanthocephalan Corynosoma wegeneri. Source: originally uploaded to en.wikipedia.org by en:User:Anilocra. Author: Dr. Neil Campbell, University of Aberdeen, Scotland, UK.
Fonseca, Michelle Cristie Gonçalves da, Knoff, Marcelo, Felizardo, Nilza Nunes, Torres, Eduardo José Lopes, Di Azevedo, Maria Isabel Nogueira, Gomes, Delir Corrêa, Clemente, Sérgio Carmona de São, & Iñiguez, Alena Mayo.
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Summary[edit] Description: English: Proboscis, neck and trunk spines of a juvenile Bolbosoma turbinella. Bar is 200 um. Date: 13 June 2019. Source: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612019005008108&lng=en&nrm=iso&tlng=en. Author: Fonseca, Michelle Cristie Gonçalves da, Knoff, Marcelo, Felizardo, Nilza Nunes, Torres, Eduardo José Lopes, Di Azevedo, Maria Isabel Nogueira, Gomes, Delir Corrêa, Clemente, Sérgio Carmona de São, & Iñiguez, Alena Mayo.
Amin, Omar M.; Heckmann, Richard A.; Osama, Mohammed; Evans, R. Paul
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Summary[edit] Description: English: Views of the proboscis of Moniliformis saudi. Date: 1 January 2016. Source: https://folia.paru.cas.cz/pdfs/fol/2016/01/14.pdf. Author: Amin, Omar M.; Heckmann, Richard A.; Osama, Mohammed; Evans, R. Paul. According to wikicommons, the journal Folia Parasitologica switched to open access under a CC-BY 4.0 license as of January 1, 2015. Licensing[edit] : This file is licensed under the Creative CommonsAttribution 4.0 International license. :. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. https://creativecommons.org/licenses/by/4.0 CC BY 4.0 Creative Commons Attribution 4.0 truetrue.
Summary[edit] Description: English: An adult Macracanthorhynchus hirudinaceus (Acanthocephala: Archiacanthocephala: Oligacanthorhynchida). Date:. Source: Division of Parasitic Diseases and Malaria (Centers for Disease Control and Prevention). Author: Division of Parasitic Diseases and Malaria team.
Summary[edit] Description: English: Taken from small lakes located at an altitude of 2200 m. (Google translate) Français : Prélevés dans des petits lacs situés à 2200 m d'altitude. Date: 23 May 2020, 09:17:52. Source: https://www.flickr.com/photos/philgar/49975848148/. Author: Philippe Garcelon.
Description: Bdelloidea sp., washed from sample of Ceratodon purpureus, Søborg, Denmark, 10 January 2015 Photographed with Nikon Coolpix 4500 attached to Brunel SP150 compound microscope at 100x and 200x. Date: 10 January 2015, 17:33. Source: Bdelloidea sp.. Author: Donald Hobern from Copenhagen, Denmark. Camera location55° 43′ 20.67″ N, 12° 30′ 09.6″ EView all coordinates using: OpenStreetMap 55.722409; 12.502666.
Summary[edit] Description: English: fixed Gnathostomula paradoxa, collected in Sylt (Germany), mounted for light microscopy. Date: 1 February 2016. Source: Own work. Author: Ludwik Gąsiorowski.
Summary[edit] Description: English: Life cycle of Macracanthorhynchus hirudinaceus (Acanthocephala: Archiacanthocephala: Oligacanthorhynchida). Date:. Source: Division of Parasitic Diseases and Malaria (Centers for Disease Control and Prevention). Author: Division of Parasitic Diseases and Malaria team.