Echinodermata: Crinoidea) Kristian Taylor Nova Southeastern University
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Genomic Insights of Body Plan Transitions from Bilateral to Pentameral Symmetry in Echinoderms
ARTICLE https://doi.org/10.1038/s42003-020-1091-1 OPEN Genomic insights of body plan transitions from bilateral to pentameral symmetry in Echinoderms Yongxin Li1, Akihito Omori 2, Rachel L. Flores3, Sheri Satterfield3, Christine Nguyen3, Tatsuya Ota 4, Toko Tsurugaya5, Tetsuro Ikuta6,7, Kazuho Ikeo4, Mani Kikuchi8, Jason C. K. Leong9, Adrian Reich 10, Meng Hao1, Wenting Wan1, Yang Dong 11, Yaondong Ren1, Si Zhang12, Tao Zeng 12, Masahiro Uesaka13, 1234567890():,; Yui Uchida9,14, Xueyan Li 1, Tomoko F. Shibata9, Takahiro Bino15, Kota Ogawa16, Shuji Shigenobu 15, Mariko Kondo 9, Fayou Wang12, Luonan Chen 12,17, Gary Wessel10, Hidetoshi Saiga7,9,18, ✉ ✉ R. Andrew Cameron 19, Brian Livingston3, Cynthia Bradham20, Wen Wang 1,21,22 & Naoki Irie 9,14,22 Echinoderms are an exceptional group of bilaterians that develop pentameral adult symmetry from a bilaterally symmetric larva. However, the genetic basis in evolution and development of this unique transformation remains to be clarified. Here we report newly sequenced genomes, developmental transcriptomes, and proteomes of diverse echinoderms including the green sea urchin (L. variegatus), a sea cucumber (A. japonicus), and with particular emphasis on a sister group of the earliest-diverged echinoderms, the feather star (A. japo- nica). We learned that the last common ancestor of echinoderms retained a well-organized Hox cluster reminiscent of the hemichordate, and had gene sets involved in endoskeleton development. Further, unlike in other animal groups, the most conserved developmental stages were not at the body plan establishing phase, and genes normally involved in bila- terality appear to function in pentameric axis development. These results enhance our understanding of the divergence of protostomes and deuterostomes almost 500 Mya. -
Late Cretaceous-Early Palaeogene Echinoderms and the K/T Boundary in the Southeast Netherlands and Northeast Belgium — Part 6: Conclusions
pp 507-580 15-01-2007 14:51 Pagina 505 Late Cretaceous-Early Palaeogene echinoderms and the K/T boundary in the southeast Netherlands and northeast Belgium — Part 6: Conclusions John W.M. Jagt Jagt, J.W.M. Late Cretaceous-Early Palaeogene echinoderms and the K/T boundary in the southeast Netherlands and northeast Belgium — Part 6: Conclusions. — Scripta Geol., 121: 505-577, 8 figs., 9 tables, Leiden, December 2000. John W.M. Jagt, Natuurhistorisch Museum Maastricht, Postbus 882, NL-6200 AW Maastricht, The Netherlands, E-mail: [email protected] Key words: Echinodermata, Late Cretaceous, Early Palaeogene, palaeobiology, K/T boundary, extinc- tion. The palaeobiology of echinoderms occurring in the Meerssen and Geulhem members is discussed and changes in diversity across the K/T boundary are documented. Using literature data on the ecology of extant faunas, the various echinoderm groups are considered. Naturally, such data can only be applied with due caution to fossil forms, whose skeletal morphology is often incompletely known. This holds especially true for asteroids, ophiuroids, and crinoids, which, upon death, rapidly disinte- grate into jumbles of dissociated ossicles. Bioturbation, scavenging, and current winnowing all con- tribute to blurring the picture still further. However, data on extant forms do allow a preliminary sub- division of fossil species into various ecological groups, which are discussed herein. Combining recently published data on K/T boundary sections in Jylland and Sjælland (Denmark) with the pic- ture drawn here for the Maastricht area results in the following best constrained scenario. The demise of the highly diverse latest Maastrichtian echinoderm faunas, typical of shallow-water settings with local palaeorelief and associated unconsolidated bottoms, was rapid, suggestive of a catastrophic event (e.g. -
Evidence for Cospeciation Events in the Host–Symbiont System Involving Crinoids (Echinodermata) and Their Obligate Associates, the Myzostomids (Myzostomida, Annelida)
Molecular Phylogenetics and Evolution 54 (2010) 357–371 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Evidence for cospeciation events in the host–symbiont system involving crinoids (Echinodermata) and their obligate associates, the myzostomids (Myzostomida, Annelida) Déborah Lanterbecq a,*, Grey W. Rouse b, Igor Eeckhaut a a Marine Biology Laboratory, University of Mons, 6 Av. du Champ de Mars, Bât. Sciences de la vie, B-7000 Mons, Belgium b Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093-0202, USA article info abstract Article history: Although molecular-based phylogenetic studies of hosts and their associates are increasingly common Received 14 April 2009 in the literature, no study to date has examined the hypothesis of coevolutionary process between Revised 3 August 2009 hosts and commensals in the marine environment. The present work investigates the phylogenetic Accepted 12 August 2009 relationships among 16 species of obligate symbiont marine worms (Myzostomida) and their echino- Available online 15 August 2009 derm hosts (Crinoidea) in order to estimate the phylogenetic congruence existing between the two lin- eages. The combination of a high species diversity in myzostomids, their host specificity, their wide Keywords: variety of lifestyles and body shapes, and millions years of association, raises many questions about Coevolution the underlying mechanisms triggering their diversification. The phylogenetic -
Echinodermata: Crinoidea: Comatulida: Comasteridae) from the Ryukyu Islands, Japan*
Zootaxa 3367: 252–268 (2012) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2012 · Magnolia Press ISSN 1175-5334 (online edition) Comanthus kumi, a new shallow-water comatulid (Echinodermata: Crinoidea: Comatulida: Comasteridae) from the Ryukyu Islands, Japan* YOSHIHISA FUJITA1,2,4 & MASAMI OBUCHI3 1University Education Center, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan. E-mail: [email protected] 2Marine Learning Center, 2-95-101 Miyagi, Chatan-cho, Okinawa 904-0113, Japan. 3Biological Institute on Kuroshio 560 Nishidomari, Otuski-cho, Kochi, 788-0333 Japan. E-mail: [email protected] 4Corresponding author * In: Naruse, T., Chan, T.-Y., Tan, H.H., Ahyong, S.T. & Reimer, J.D. (2012) Scientific Results of the Marine Biodiversity Expedition — KUMEJIMA 2009. Zootaxa, 3367, 1–280. Abstract A new species of the genus Comanthus A.H. Clark, 1908, is described on the basis of specimens collected from Kume Island and Okinawa Island, the Ryukyu Islands, Japan. Comanthus kumi n. sp. is distinguished from all ten congeners by having extremely elongate arms exceeding 300 mm in length and the colouration in life. The new species concealed its whole body in a crevice or small hole on coral reefs during the day and protruded only several elongate arms on the reef surface at night. This habit suggests that the new species is nocturnal. Key words: Crinoidea, Comatulida, Comasteridae, new species, Okinawa Introduction The species of the comatulid genus Comanthus A.H. Clark, 1908 are well known in shallow-water coral reefs (Kogo 1998; Rowe et al. 1986). The genus was established by A.H. -
Smithsonian Miscellaneous Collections [Vol
NEW GENERA OF RECENT FREE CRINOIDS By AUSTIN HOBART CLARK Assistant, Bureau of Fisheries Since the publication of Dr. P. H. Carpenter's great monograph on the recent unstalked crinoids in 1888, the group has received very- little attention from systematists, probably because of the rarity of most of the species and the difficulty in getting together representative material of even the more common ones. Dr. Carpenter included in the family Comatulidse the genera Thaumatocrinus, Eudiocrinus, Promachocrinus (including the subsequently differentiated Decame- trocrinus), Atelecrinus, Antedon, Comatula (=Actinometra) , and Thiolliericrinus. All of these, with the exception of Antedon and Comatula, are comparatively small, strictly homogeneous genera; with them, however, the case is quite different. The genus Antedon was divided by Dr. Carpenter into four "series," and all but the first series into two or more "groups," the characters used in the differ- entiation of the groups and series being (1) the character of the joint between the costals, (2) the number of arms, (3) the number of the distichals, (4) the character of the lower pinnules, (5) the development or absence of covering plates on the ambulacra, and (6) the rounded or "wall-sided" character of the costals and lower brachials. Of all these characters, the first alone is the only one not common to two or more of his series or groups, as diagnosed by him. Taking No. 2, for instance, five of his groups and also several unassigned species are ten-armed ; all the rest have more than ten arms. A number of single species have both ten and more than ten arms, as a result of purely individual variation. -
The Crinoids of Madagascar
Bull. Mus. nain. Hist, nat., Paris, 4e sér., 3, 1981, section A, n° 2 : 379-413. The Crinoids of Madagascar by Janet I. MARSHALL and F. W. E. ROWE * Abstract. — A collection of crinoids from the vicinity of the Malagasy Republic, held in the Muséum national d'Histoire naturelle, in Paris, is identified. Three new species are described in the genera Chondrometra, Iridometra and Pentametrocrinus. The nominal species Comissia hartmeyeri A. H. Clark is considered to be conspecific with C. ignota A. H. Clark, and Dichro- metra afra A. H. Clark with D. flagellata (J. Müller). Comments are included on several syste- matic problems which have arisen during the study of this collection. Résumé. — Détermination d'une collection de Crinoïdes de Madagascar, déposée au Muséum national d'Histoire naturelle de Paris. Trois nouvelles espèces sont décrites pour les genres Chon- drometra, Iridometra et Pentametrocrinus. L'espèce Comissia hartmeyeri A. H. Clark est considérée comme synonyme de C. ignota A. H. Clark, et Dichrometra afra A. H. Clark comme synonyme de D. flagellata (J. Müller). Quelques problèmes systématiques sont discutés. INTRODUCTION The echinoderm fauna of South Africa and some parts of the Indian Ocean have been well documented, but that of Madagascar and of the African coast north of Mozambique is less well known. The island of Madagascar (the Malagasy Republic) stretches from approximately 12° S to 26° S through tropical to warm-temperate waters. The echino- derms found along the Malagasy coast are for the most part distinctly different from that of southern Africa as delimited by the Tropic of Capricorn (23°3(V S) (see A. -
Zootaxa, a New Genus and Species of Western Atlantic
Zootaxa 2449: 49–68 (2010) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2010 · Magnolia Press ISSN 1175-5334 (online edition) A new genus and species of Western Atlantic sea lily in the family Septocrinidae (Echinodermata: Crinoidea: Bourgueticrinida) ALEXANDR N. MIRONOV1 & DAVID L. PAWSON2 1P. P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Nakhimovskyi Prospekt 36, Moscow 117997, Russia. E-mail: [email protected] 2D.L. Pawson, National Museum of Natural History, Smithsonian Institution, Washington DC 20013-7012, USA. E-mail: [email protected] Abstract Rouxicrinus vestitus new genus, new species, collected during submersible dives at depths of 421–887 m near Barbados, Colombia and the Bahamas is described, and notes on ecology are included. It is referred to the family Septocrinidae Mironov, 2000, which now comprises three genera, Zeuctocrinus A.M. Clark, 1973, Septocrinus Mironov, 2000, and Rouxicrinus new genus. This new genus differs significantly from both Septocrinus and Zeuctocrinus in having numerous low columnals in the proxistele, which tapers toward the crown, first pinnule arising more proximally, thorns on brachials and pinnulars, and a thick covering of soft tissue on arms and pinnules. Key words: Rouxicrinus vestitus, Caribbean Sea, taxonomy, Crinoidea, Bourgueticrinida, Septocrinidae Introduction The family Septocrinidae is a small group of extant ten-armed sea lilies. The first-captured species of this group, Zeuctocrinus gisleni A.M. Clark, 1973, has been described in detail by A.M. Clark (1973), Roux (1977) and Roux et al. (2002). A.M. Clark (1973) referred Zeuctocrinus to the family Phrynocrinidae A.H. Clark 1907 comprising the extant Phrynocrinus nudus A.H. -
In Situ Observations Increase the Diversity Records of Rocky-Reef Inhabiting Echinoderms Along the South West Coast of India
Indian Journal of Geo Marine Sciences Vol. 48 (10), October 2019, pp. 1528-1533 In situ observations increase the diversity records of Rocky-reef inhabiting Echinoderms along the South West Coast of India Surendar Chandrasekar1*, Singarayan Lazarus2, Rethnaraj Chandran3, Jayasingh Chellama Nisha3, Gigi Chandra Rajan4 and Chowdula Satyanarayana1 1Marine Biology Regional Centre, Zoological Survey of India, Chennai 600 028, Tamil Nadu, India 2Institute for Environmental Research and Social Education, No.150, Nesamony Nagar, Nagercoil 629001, Tamil Nadu, India 3GoK-Coral Transplantation/Restoration Project, Zoological Survey of India - Field Station, Jamnagar 361 001, Gujrat, India 4Department of Zoology, All Saints College, Trivandrum 695 008, Kerala, India *[Email: [email protected]] Received 19 January 2018; revised 23 April 2018 Diversity of Echinoderms was studied in situ in rocky reefs areas of the south west coast of India from Goa (Lat. N 15°21.071’; Long. E 073°47.069’) to Kanyakumari (Lat. N 08°06.570’; Long. E 077°18.120’) via Karnataka and Kerala. The underwater visual census to assess the biodiversity was carried out by SCUBA diving. This study reveals 11 new records to Goa, 7 to Karnataka, 5 to Kerala and 7 to the west coast of Tamil Nadu. A total of 15 species representing 12 genera, 10 families, 8 orders and 5 Classes were recorded namely Holothuria atra, H. difficilis, H. leucospilota, Actinopyga mauritiana, Linckia laevigata, Temnopleurus toreumaticus, Salmacis bicolor, Echinothrix diadema, Stomopneustes variolaris, Macrophiothrix nereidina, Tropiometra carinata, Linckia multifora, Fromia milleporella and Ophiocoma scolopendrina. Among these, the last three are new records to the west coast of India. -
Echinodermata) and Their Permian-Triassic Origin
Molecular Phylogenetics and Evolution 66 (2013) 161-181 Contents lists available at SciVerse ScienceDirect FHYLÖGENETICS a. EVOLUTION Molecular Phylogenetics and Evolution ELSEVIER journal homepage:www.elsevier.com/locate/ympev Fixed, free, and fixed: The fickle phylogeny of extant Crinoidea (Echinodermata) and their Permian-Triassic origin Greg W. Rouse3*, Lars S. Jermiinb,c, Nerida G. Wilson d, Igor Eeckhaut0, Deborah Lanterbecq0, Tatsuo 0 jif, Craig M. Youngg, Teena Browning11, Paula Cisternas1, Lauren E. Helgen-1, Michelle Stuckeyb, Charles G. Messing k aScripps Institution of Oceanography, UCSD, 9500 Gilman Drive, La Jolla, CA 92093, USA b CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, ACT 2601, Australia c School of Biological Sciences, The University of Sydney, NSW 2006, Australia dThe Australian Museum, 6 College Street, Sydney, NSW 2010, Australia e Laboratoire de Biologie des Organismes Marins et Biomimétisme, University of Mons, 6 Avenue du champ de Mars, Life Sciences Building, 7000 Mons, Belgium fNagoya University Museum, Nagoya University, Nagoya 464-8601, Japan s Oregon Institute of Marine Biology, PO Box 5389, Charleston, OR 97420, USA h Department of Climate Change, PO Box 854, Canberra, ACT 2601, Australia 1Schools of Biological and Medical Sciences, FI 3, The University of Sydney, NSW 2006, Sydney, Australia * Department of Entomology, NHB E513, MRC105, Smithsonian Institution, NMNH, P.O. Box 37012, Washington, DC 20013-7012, USA k Oceanographic Center, Nova Southeastern University, 8000 North Ocean Drive, Dania Beach, FL 33004, USA ARTICLE INFO ABSTRACT Añicle history: Although the status of Crinoidea (sea lilies and featherstars) as sister group to all other living echino- Received 6 April 2012 derms is well-established, relationships among crinoids, particularly extant forms, are debated. -
The Shallow-Water Crinoid Fauna of Kwajalein Atoll, Marshall Islands: Ecological Observations, Interatoll Comparisons, and Zoogeographic Affinities!
Pacific Science (1985), vol. 39, no. 4 © 1987 by the Univers ity of Hawaii Press. All rights reserved The Shallow-Water Crinoid Fauna of Kwajalein Atoll, Marshall Islands: Ecological Observations, Interatoll Comparisons, and Zoogeographic Affinities! D. L. ZMARZLy 2 ABSTRACT: Twelve species ofcomatulid crinoids in three families were found to inhabit reefs at Kwajalein Atoll during surveys conducted both day and night by divers using scuba gear. Eleven of the species represent new records for the atoll, and five are new for the Marshall Islands. A systematic resume of each species is presented, including observations on die! activity patterns, degree of exposure when active, and current requirements deduced from local distri butions. More than half of the species were strictly nocturnal. Densities of nocturnal populations were much higher than those typically observed during the day . Occurrence and distribution ofcrinoids about the atoll appeared to be influenced by prevailing currents. Some species, of predominantly cryptic and semicryptic habit by day, occurred at sites both with and without strong currents. While these species were able to survive in habitats where currents prevailed, they appeared not to require strong current flow. In contrast, the remaining species, predominantly large, fully exposed comasterids, were true rheophiles; these were found on seaward reefs and only on lagoon reefs in close proximity to tidal passes. Comparison of crinoid records between atolls in the Marshall Islands shows Kwajalein to have the highest diversity, although current disparities between atolls in the number of species recorded undoubtedly reflect to some extent differences in sampling effort and methods. Based on pooled records, a total of 14 shallow-water crinoid species is known for the Marshall Islands, compared with 21 for the Palau Archipelago and 55 for the Philippines. -
BENTHIC FAUNA of the NORTH AEGEAN SEA II CRINOIDEA and HOLOTHURIOIDEA (ECHINODERMATA) Athanasios S
BENTHIC FAUNA OF THE NORTH AEGEAN SEA II CRINOIDEA AND HOLOTHURIOIDEA (ECHINODERMATA) Athanasios S. Koukouras, Apostolos I. Sinis To cite this version: Athanasios S. Koukouras, Apostolos I. Sinis. BENTHIC FAUNA OF THE NORTH AEGEAN SEA II CRINOIDEA AND HOLOTHURIOIDEA (ECHINODERMATA). Vie et Milieu / Life & Environment, Observatoire Océanologique - Laboratoire Arago, 1981, pp.271-281. hal-03010387 HAL Id: hal-03010387 https://hal.sorbonne-universite.fr/hal-03010387 Submitted on 17 Nov 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. VIE MILIEU, 1981, 31 (3-4): 271-281 FAUNA OF THE NORTH AEGEAN IL CRINOIDEA AND HOLOTHURIOIDEA (ECHINODERMATA) Athanasios S. KOUKOURAS and Apostolos I. SINIS Laboratory of Zoology, University of Thessaloniki, Thessaloniki, Greece BENTHOS RÉSUMÉ. - Deux espèces de Crinoïdes et 22 espèces d'Holothurioidea ont été récoltées CRINOÏDES au Nord de la Mer Égée. 7 espèces, Holothuria (H.) stellati, H. (H.) mammata, Paracucuma- HOLOTHURIDES ria hyndmanni, Havelockia inermis, Phyllophorus granulatus, Leptosynapta makrankyra, MÉDITERRANÉE Labidoplax thomsoni sont nouvelles pour la Méditerranée orientale (20° plus à l'est), 3 MER EGÉE espèces, Holothuria (Thymiosycia) impatiens, H. (Platyperona) sanctori, H. (Panningothuria) forskali sont nouvelles pour la Mer Égée, et 5 espèces, le Crinoïde Leptometra phalangium et les Holothurides Holothuria (H.) helleri, Leptopentacta tergestina, Thyone fusus et T. -
Zoogeography of Tropical Western Atlantic Crinoidea (Echinodermata) David L
Nova Southeastern University NSUWorks Oceanography Faculty Articles Department of Marine and Environmental Sciences 7-1-1978 Zoogeography of Tropical Western Atlantic Crinoidea (Echinodermata) David L. Meyer University of Cincinnati - Main Campus Charles G. Messing University of Miami, [email protected] Donald B. Macurda Jr. University of Michigan - Ann Arbor Find out more information about Nova Southeastern University and the Oceanographic Center. Follow this and additional works at: http://nsuworks.nova.edu/occ_facarticles Part of the Marine Biology Commons, and the Oceanography and Atmospheric Sciences and Meteorology Commons Recommended Citation Meyer, David L., Charles G. Messing, and Donald B. Macurda Jr. "Biological results of the University of Miami deep-sea expeditions. 129. Zoogeography of tropical western Atlantic Crinoidea (Echinodermata)." Bulletin of Marine Science 28, no. 3 (1978): 412-441. This Article is brought to you for free and open access by the Department of Marine and Environmental Sciences at NSUWorks. It has been accepted for inclusion in Oceanography Faculty Articles by an authorized administrator of NSUWorks. For more information, please contact [email protected]. BULLETIN OF MARINE SCIENCE, 28(3): 412-441, 1978 BIOLOGICAL RESULTS OF THE UNIVERSITY OF MTAMI DEEP-SEA EXPEDITIONS. 129. ZOOGEOGRAPHY OF TROPICAL WESTERN ATLANTIC CRINOIDEA (ECHINODERMATA) David L. Meyer, Charles G. Messing, and Donald B. Macurda, Jr. ABSTRACT Recent collcctions of crinoids from the intertidal zone to ],650 m in the tropical western Atlantic have provided significant range extensions for more than half of the 44 comatulid and stalked species known from the region. Of the 34 comatulid species, over 60% are endemic to the region; of the 10 stalked species, 90% are endemic.