Description: English: A large red and white urchin with very long spines (Coelopleurus floridanus). Image ID: expn1254, Voyage To Inner Space - Exploring the Seas With NOAA Collect Photo Date: 2008 September 27 1338 Credit: Lophelia II 2008: Deepwater Coral Expedition: Reefs, Rigs, and Wrecks. Date: 25 June 2014. Source: https://www.flickr.com/photos/noaaphotolib/14319412800. Author: NOAA Photo Library - Lophelia II 2008: Deepwater Coral Expedition: Reefs, Rigs, and Wrecks. Permission(Reusing this file): : This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page. The Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by an Volunteer Response Team (VRT) member and stored in our permission archive. The correspondence is available to trusted volunteers as ticket #2014091910006014. If you have questions about the archived correspondence, please use the OTRS noticeboard. Ticket link: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom&TicketNumber=2014091910006014.
Description: Français : Jeune Arbacia stellata observé dans le Golfe de Californie. Date: 3 July 2018, 21:31:15. Source: The uploader on Wikimedia Commons received this from the author/copyright holder. Author: Sylvain Le Bris.
Description: Peristome of Arbacia punctulata. Spines near peristome are flattened with flattened, rounded tips. In trawl, RV Gemma, off Woods Hole, at TDWG 2010 p1000119. Date: 29 September 2010, 15:12. Source: Echinoid teeth Uploaded by berichard. Author: Paul Morris from USA. Camera location41° 30′ 48.19″ N, 70° 39′ 14.83″ WView all coordinates using: OpenStreetMap 41.513386; -70.654120.
Description: Arbacia punctulata Echinoid, aboral view showing absence of spines at the aboral pole. In trawl, RV Gemma, off Woods Hole, at TDWG 2010 p1000035. Date: 29 September 2010, 14:35. Source: Arbacia punctulata Uploaded by berichard. Author: Paul Morris from USA. Camera location41° 31′ 32.53″ N, 70° 40′ 16.74″ WView all coordinates using: OpenStreetMap 41.525702; -70.671317.
Description: English: Arbacia punctulata (Lamarck, 1816) Arbacia punctulata (YPM IZ 031119). Digital Image: Yale Peabody Museum of Natural History; photo by Eric A. Lazo-Wasem 2014 Coordinate uncertainty in metres 13337.38 Country or area United States of America Country code US County Dukes County Decimal latitude 41.463882 Decimal longitude -70.820069 Depth 22.5 Depth accuracy 6.5 Geodetic datum WGS84 Georeference protocol digital resource Georeference remarks provisional georeference to ST CO PL: Massachusetts Dukes :Gosnold, 6 Mar 2015, LFG Georeference sources NEVP Georeferenced date 2015 Higher geography North America; Atlantic Ocean; Buzzard's Bay; USA; :Massachusetts; Dukes County; Gosnold, Lone Rock Locality 1/2 mile 105 degrees Lone Rock Buoy. Substrate: Hard Sand Maximum depth in metres Minimum depth in metres Municipality Gosnold, Lone Rock State province Massachusetts Verbatim depth 52-96 ft Water body Atlantic Ocean; Buzzard's Bay. Source: https://www.gbif.org/occurrence/350566968. Author: Creator Eric A. Lazo-Wasem Gall L (2018). Invertebrate Zoology Division, Yale Peabody Museum. Yale University Peabody Museum. Occurrence dataset https://doi.org/10.15468/0lkr3w accessed via GBIF.org on 2018-12-24. https://www.gbif.org/occurrence/350566968.
Description: English: Arbacia punctulata (Lamarck, 1816) Arbacia punctulata (YPM IZ 100543). Digital Image: Yale Peabody Museum of Natural History; photo by Eric A. Lazo-Wasem 2017 Country or area United States of America Country code US County New Haven County Decimal latitude 41.242 Decimal longitude -72.76 Depth 0.5 Depth accuracy 0.5 Geodetic datum WGS84 Georeference protocol digital resource Georeference sources Google Earth Georeferenced by Leanne E. Elder Georeferenced date 2017 Higher geography North America; Atlantic Ocean; Long Island Sound; USA; :Connecticut; New Haven County; Branford, Outer Island Locality North East side along the shore near the docks Maximum depth in metres Minimum depth in metres Municipality Branford, Outer Island State province Connecticut Verbatim depth 0-1 m Water body Atlantic Ocean; Long Island Sound. Source: https://www.gbif.org/occurrence/1584049876. Author: Creator Eric A. Lazo-Wasem Gall L (2018). Invertebrate Zoology Division, Yale Peabody Museum. Yale University Peabody Museum. Occurrence dataset https://doi.org/10.15468/0lkr3w accessed via GBIF.org on 2018-12-24. https://www.gbif.org/occurrence/1584049876. Camera location41° 14′ 31.2″ N, 72° 45′ 36″ WView all coordinates using: OpenStreetMap 41.242000; -72.760000.
Description: English: A model of the signal-transduction pathway during chemotaxis of the sea urchin Arbacia punctulata. Binding of a chemoattractant (ligand) to the receptor — a membrane-bound guanylyl cyclase (GC) — activates the synthesis of cGMP from GTP. Cyclic GMP possibly opens cyclic nucleotide-gated (CNG) K+-selective channels, thereby causing hyperpolarization of the membrane. The cGMP signal is terminated by the hydrolysis of cGMP through phosphodiesterase (PDE) activity and inactivation of GC. On hyperpolarization, hyperpolarization-activated and cyclic nucleotide-gated (HCN) channels allow the influx of Na+ that leads to depolarization and thereby causes a rapid Ca2+ entry through voltage-activated Ca2+ channels (Cav), Ca2+ ions interact by unknown mechanisms with the axoneme of the flagellum and cause an increase of the asymmetry of flagellar beat and eventually a turn or bend in the swimming trajectory. Ca2+ is removed from the flagellum by a Na+/Ca2+ exchange mechanism. [Taken from (Kaupp et al., 2006).]. Date: 2006. Source: ftp://ftp.weizmann.ac.il/incoming/Fig.1.jpg. Author: Prof. Dr. U.B. Kaupp. Permission(Reusing this file): ftp://ftp.weizmann.ac.il/incoming/License_for_Fig1.pdf. : All biology images in this gallery could be re-created using vector graphics as SVG files. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.
Description: English: Arbacia punctulata (Lamarck, 1816) - purple sea urchin (oral side) in Florida, USA (December 2013). The echinoids are a group of echinoderms - they are starfish relatives. On modern Earth and in the fossil record, echinoids are exclusively marine. Two broad groups exist - the regular echinoids (sea urchins) and the irregular echinoids (heart urchins and sea biscuits and sand dollars). Sea urchins have subglobular to slightly flattened, radially symmetrical skeletons (tests) composed of calcite (CaCO3 - calcium carbonate). The sea urchin test is covered with spines - these readily detach after death. Sea urchins have a mouth with a pentaradial structure called an "Aristotle's lantern" (see the center of the urchin in the above photo) that is used to graze on algae and other biofilms on hard substrates. The dead sea urchin shown above is Arbacia punctulata, the purple sea urchin. The specimen sits on a marine beach dominated by siliciclastic sand. Classification: Animalia, Echinodermata, Echinoidea, Arbacioida, Arbaciidae Locality: Algiers Beach, southern shore of Sanibel Island, Gulf of Mexico coast of southwestern Florida, USA (vicinity of 26° 25' 27.64" North latitude, 82° 03' 56.17" West longitude) More info. at: en.wikipedia.org/wiki/Arbacia_punctulata. Date: 16 December 2013, 17:24:06. Source: https://www.flickr.com/photos/47445767@N05/25087883352/. Author: James St. John.
Description: purple sea urchin, Arbacia punctulata, 23mm. Lower Chesapeake Bay, Wolf Trap, Mathews County, VA - 12/03/13. Photo by Robert Aguilar, Smithsonian Environmental Research Center. Date: 16 April 2006, 03:51. Source: Arbacia_punctulata_(I0702). Author: Smithsonian Environmental Research Center.
James St. John|sourceurl=https://flickr.com/photos/47445767@N05/25087890062%7Carchive=https://web.archive.org/web/20200407152404/https://flickr.com/photos/47445767@N05/25087890062%7Creviewdate=2018-10-14 14:03:36|reviewlicense=cc-by-2.0|reviewer=FlickreviewR 2
Wikimedia Commons
Description: Français : Arbacia dufresnei (collection du Muséum National d'Histoire Naturelle). Date: 20 November 2015, 16:39:06. Source: Own work. Author: Frédéric Ducarme.
Description: English: Arbacia Gray, 1835. lot count 1; Microslide 01, balsam, whole mount; plutei; other number E 467 Arbacia (YPM IZ 093796). Digital Image: Yale Peabody Museum of Natural History; photo by Daniel J. Drew 2018 Preparations: microslide. Source: https://www.gbif.org/occurrence/1457644839. Author: Creator Daniel J. Drew Gall L (2018). Invertebrate Zoology Division, Yale Peabody Museum. Yale University Peabody Museum. Occurrence dataset https://doi.org/10.15468/0lkr3w accessed via GBIF.org on 2018-12-28. https://www.gbif.org/occurrence/1457644839.
Description: English: Arbacia Gray, 1835. lot count 1; Microslide 01, balsam, whole mount; plutei ((larval development) Arbacia (YPM IZ 077078). Digital Image: Yale Peabody Museum of Natural History; photo by Daniel J. Drew 2015 Preparations: microslide. Source: https://www.gbif.org/occurrence/1142049050. Author: Creator Daniel J. Drew Gall L (2018). Invertebrate Zoology Division, Yale Peabody Museum. Yale University Peabody Museum. Occurrence dataset https://doi.org/10.15468/0lkr3w accessed via GBIF.org on 2018-12-26. https://www.gbif.org/occurrence/1142049050.