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Systema Naturae∗
Systema Naturae∗ c Alexey B. Shipunov v. 5.802 (June 29, 2008) 7 Regnum Monera [ Bacillus ] /Bacteria Subregnum Bacteria [ 6:8Bacillus ]1 Superphylum Posibacteria [ 6:2Bacillus ] stat.m. Phylum 1. Firmicutes [ 6Bacillus ]2 Classis 1(1). Thermotogae [ 5Thermotoga ] i.s. 2(2). Mollicutes [ 5Mycoplasma ] 3(3). Clostridia [ 5Clostridium ]3 4(4). Bacilli [ 5Bacillus ] 5(5). Symbiobacteres [ 5Symbiobacterium ] Phylum 2. Actinobacteria [ 6Actynomyces ] Classis 1(6). Actinobacteres [ 5Actinomyces ] Phylum 3. Hadobacteria [ 6Deinococcus ] sed.m. Classis 1(7). Hadobacteres [ 5Deinococcus ]4 Superphylum Negibacteria [ 6:2Rhodospirillum ] stat.m. Phylum 4. Chlorobacteria [ 6Chloroflexus ]5 Classis 1(8). Ktedonobacteres [ 5Ktedonobacter ] sed.m. 2(9). Thermomicrobia [ 5Thermomicrobium ] 3(10). Chloroflexi [ 5Chloroflexus ] ∗Only recent taxa. Viruses are not included. Abbreviations and signs: sed.m. (sedis mutabilis); stat.m. (status mutabilis): s., aut i. (superior, aut interior); i.s. (incertae sedis); sed.p. (sedis possibilis); s.str. (sensu stricto); s.l. (sensu lato); incl. (inclusum); excl. (exclusum); \quotes" for environmental groups; * (asterisk) for paraphyletic taxa; / (slash) at margins for major clades (\domains"). 1Incl. \Nanobacteria" i.s. et dubitativa, \OP11 group" i.s. 2Incl. \TM7" i.s., \OP9", \OP10". 3Incl. Dictyoglomi sed.m., Fusobacteria, Thermolithobacteria. 4= Deinococcus{Thermus. 5Incl. Thermobaculum i.s. 1 4(11). Dehalococcoidetes [ 5Dehalococcoides ] 5(12). Anaerolineae [ 5Anaerolinea ]6 Phylum 5. Cyanobacteria [ 6Nostoc ] Classis 1(13). Gloeobacteres [ 5Gloeobacter ] 2(14). Chroobacteres [ 5Chroococcus ]7 3(15). Hormogoneae [ 5Nostoc ] Phylum 6. Bacteroidobacteria [ 6Bacteroides ]8 Classis 1(16). Fibrobacteres [ 5Fibrobacter ] 2(17). Chlorobi [ 5Chlorobium ] 3(18). Salinibacteres [ 5Salinibacter ] 4(19). Bacteroidetes [ 5Bacteroides ]9 Phylum 7. Spirobacteria [ 6Spirochaeta ] Classis 1(20). Spirochaetes [ 5Spirochaeta ] s.l.10 Phylum 8. Planctobacteria [ 6Planctomyces ]11 Classis 1(21). -
Platyhelminthes, Nemertea, and "Aschelminthes" - A
BIOLOGICAL SCIENCE FUNDAMENTALS AND SYSTEMATICS – Vol. III - Platyhelminthes, Nemertea, and "Aschelminthes" - A. Schmidt-Rhaesa PLATYHELMINTHES, NEMERTEA, AND “ASCHELMINTHES” A. Schmidt-Rhaesa University of Bielefeld, Germany Keywords: Platyhelminthes, Nemertea, Gnathifera, Gnathostomulida, Micrognathozoa, Rotifera, Acanthocephala, Cycliophora, Nemathelminthes, Gastrotricha, Nematoda, Nematomorpha, Priapulida, Kinorhyncha, Loricifera Contents 1. Introduction 2. General Morphology 3. Platyhelminthes, the Flatworms 4. Nemertea (Nemertini), the Ribbon Worms 5. “Aschelminthes” 5.1. Gnathifera 5.1.1. Gnathostomulida 5.1.2. Micrognathozoa (Limnognathia maerski) 5.1.3. Rotifera 5.1.4. Acanthocephala 5.1.5. Cycliophora (Symbion pandora) 5.2. Nemathelminthes 5.2.1. Gastrotricha 5.2.2. Nematoda, the Roundworms 5.2.3. Nematomorpha, the Horsehair Worms 5.2.4. Priapulida 5.2.5. Kinorhyncha 5.2.6. Loricifera Acknowledgements Glossary Bibliography Biographical Sketch Summary UNESCO – EOLSS This chapter provides information on several basal bilaterian groups: flatworms, nemerteans, Gnathifera,SAMPLE and Nemathelminthes. CHAPTERS These include species-rich taxa such as Nematoda and Platyhelminthes, and as taxa with few or even only one species, such as Micrognathozoa (Limnognathia maerski) and Cycliophora (Symbion pandora). All Acanthocephala and subgroups of Platyhelminthes and Nematoda, are parasites that often exhibit complex life cycles. Most of the taxa described are marine, but some have also invaded freshwater or the terrestrial environment. “Aschelminthes” are not a natural group, instead, two taxa have been recognized that were earlier summarized under this name. Gnathifera include taxa with a conspicuous jaw apparatus such as Gnathostomulida, Micrognathozoa, and Rotifera. Although they do not possess a jaw apparatus, Acanthocephala also belong to Gnathifera due to their epidermal structure. ©Encyclopedia of Life Support Systems (EOLSS) BIOLOGICAL SCIENCE FUNDAMENTALS AND SYSTEMATICS – Vol. -
Spermiogenesis in the Acoel Symsagittifera Roscoffensis: Nucleus-Plasma
bioRxiv preprint doi: https://doi.org/10.1101/828251; this version posted November 1, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Spermiogenesis in the acoel Symsagittifera roscoffensis: nucleus-plasma membrane contact sites and microtubules. Matthew J. Hayes1, Anne-C. Zakrzewski2, Tim P. Levine1 and Maximilian J. Telford2 1University College London Institute of Ophthalmology, 11-43 Bath Street, London EC1V 9EL, UK 2 Centre for Life’s Origins and Evolution, Department of Genetics, Evolution and Environment, University College London, Gower Street, London, WC1E 6BT, UK Running title: Contact sites and microtubule rearrangements in spermiogenesis Summary sentence: During spermiogenesis in the acoel flatworm Symsagittifera roscoffensis, two previously unidentified contact sites contribute to the structure of the mature spermatozoon and the axonemal structures show direct continuity between doublet and dense core microtubules. Keywords: Contact-site, acrosome, gamete biology, spermatid, spermatogenesis, spermiogenesis, acoel. bioRxiv preprint doi: https://doi.org/10.1101/828251; this version posted November 1, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Abstract Symsagittifera roscoffensis is a small marine worm found in the intertidal zone of sandy beaches around the European shores of the Atlantic. S. roscoffensis is a member of the Acoelomorpha, a group of flatworms formerly classified with the Platyhelminthes, but now recognised as Xenacoelomorpha, a separate phylum of disputed affinity. -
An Inventory of Short Horn Grasshoppers in the Menoua Division, West Region of Cameroon
AGRICULTURE AND BIOLOGY JOURNAL OF NORTH AMERICA ISSN Print: 2151-7517, ISSN Online: 2151-7525, doi:10.5251/abjna.2013.4.3.291.299 © 2013, ScienceHuβ, http://www.scihub.org/ABJNA An inventory of short horn grasshoppers in the Menoua Division, West Region of Cameroon Seino RA1, Dongmo TI1, Ghogomu RT2, Kekeunou S3, Chifon RN1, Manjeli Y4 1Laboratory of Applied Ecology (LABEA), Department of Animal Biology, Faculty of Science, University of Dschang, P.O. Box 353 Dschang, Cameroon, 2Department of Plant Protection, Faculty of Agriculture and Agronomic Sciences (FASA), University of Dschang, P.O. Box 222, Dschang, Cameroon. 3 Département de Biologie et Physiologie Animale, Faculté des Sciences, Université de Yaoundé 1, Cameroun 4 Department of Biotechnology and Animal Production, Faculty of Agriculture and Agronomic Sciences (FASA), University of Dschang, P.O. Box 222, Dschang, Cameroon. ABSTRACT The present study was carried out as a first documentation of short horn grasshoppers in the Menoua Division of Cameroon. A total of 1587 specimens were collected from six sites i.e. Dschang (265), Fokoue (253), Fongo – Tongo (267), Nkong – Ni (271), Penka Michel (268) and Santchou (263). Identification of these grasshoppers showed 28 species that included 22 Acrididae and 6 Pyrgomorphidae. The Acrididae belonged to 8 subfamilies (Acridinae, Catantopinae, Cyrtacanthacridinae, Eyprepocnemidinae, Oedipodinae, Oxyinae, Spathosterninae and Tropidopolinae) while the Pyrgomorphidae belonged to only one subfamily (Pyrgomorphinae). The Catantopinae (Acrididae) showed the highest number of species while Oxyinae, Spathosterninae and Tropidopolinae showed only one species each. Ten Acrididae species (Acanthacris ruficornis, Anacatantops sp, Catantops melanostictus, Coryphosima stenoptera, Cyrtacanthacris aeruginosa, Eyprepocnemis noxia, Gastrimargus africanus, Heteropternis sp, Ornithacris turbida, and Trilophidia conturbata ) and one Pyrgomorphidae (Zonocerus variegatus) were collected in all the six sites. -
Tropical Marine Invertebrates CAS BI 569 Phylum Echinodermata by J
Tropical Marine Invertebrates CAS BI 569 Phylum Echinodermata by J. R. Finnerty Porifera Ctenophora Cnidaria Deuterostomia Ecdysozoa Lophotrochozoa Chordata Arthropoda Annelida Hemichordata Onychophora Mollusca Echinodermata *Nematoda *Platyhelminthes Acoelomorpha Calcispongia Silicispongiae PROTOSTOMIA Phylum Phylum Phylum CHORDATA ECHINODERMATA HEMICHORDATA Blastopore -> anus Radial / equal cleavage Coelom forms by enterocoely ! Protostome = blastopore contributes to the mouth blastopore mouth anus ! Deuterostome = blastopore becomes anus blastopore anus mouth Halocynthia, a tunicate (Urochordata) Coelom Formation Protostomes: Schizocoely Deuterostomes: Enterocoely Enterocoely in a sea star Axocoel (protocoel) Gives rise to small portion of water vascular system. Hydrocoel (mesocoel) Gives rise to water vascular system. Somatocoel (metacoel) Gives rise to lining of adult body cavity. Echinoderm Metamorphosis ECHINODERM FEATURES Water vascular system and tube feet Pentaradial symmetry Coelom formation by enterocoely Water Vascular System Tube Foot Tube Foot Locomotion ECHINODERM DIVERSITY Crinoidea Asteroidea Ophiuroidea Holothuroidea Echinoidea “sea lilies” “sea stars” “brittle stars” “sea cucumbers” “urchins, sand dollars” Group Form & Habit Habitat Ossicles Feeding Special Characteristics Crinoids 5-200 arms, stalked epifaunal Internal skeleton suspension mouth upward; mucous & Of each arm feeders secreting glands on sessile podia Ophiuroids usually 5 thin arms, epifaunal ossicles in arms deposit feeders act and appear like vertebrae -
Chlorophyta Is a Division of Green Algae, Informally Called
Chlorophyta is a division of green algae, informally waters of the Sargasso Sea. Many brown algae, such as called chlorophytes. The name is used in two very members of the order Fucales, commonly grow along different senses so that care is needed to determine the rocky seashores. Some members of the class are used as use by a particular author. In older classification food for humans. systems, it refers to a highly paraphyletic group of all Worldwide there are about 1500–2000 species of brown the green algae within the green plants (Viridiplantae), algae.[4] Some species are of sufficient commercial and thus includes about 7,000 species [4] [5] of mostly importance, such as Ascophyllum nodosum , that they aquatic photosynthetic eukaryotic organisms. Like the have become subjects of extensive research in their own land plants (bryophytes and tracheophytes), green algae right.[5] [4] contain chlorophylls a and b, and store food as starch Brown algae belong to a very large group, the in their plastids. Heterokontophyta, a eukaryotic group of organisms In newer classifications, it refers to one of the two distinguished most prominently by having chloroplasts clades making up the Viridiplantae, which are the surrounded by four membranes, suggesting an origin chlorophytes and the streptophytes or charophytes.[6][7] from a symbiotic relationship between a basal In this sense it includes only about 4,300 species.[3] eukaryote and another eukaryotic organism. Most brown algae contain the pigment fucoxanthin, which is responsible for the distinctive greenish-brown color that The red algae, or Rhodophyta ( / r o ʊ ˈ d ɒ f ɨ t ə / or / gives them their name. -
Combined Molecular Phylogenetic Analysis of the Orthoptera
Syst. Biol. 48(2):233–253, 1999 CombinedMolecular Phylogeneti cAnalysisof theOrthoptera (Arthropoda,Insecta) and Implications for Their Higher Systematics P. K. FLOOK,1 S. KLEE, AND C. H. F. ROWELL ZoologyInstitute, University of Basel, 4051-Basel,Switzerland Abstract.—Aphylogenetic analysisof mitochondrial andnuclear rDNA sequences fromspecies of all the superfamilies of the insect orderOrthoptera (grasshoppers,crickets, andrelatives) conrmed thatalthough mitochondrial sequences provided goodresolution of the youngestsuperfamilies, nuclear rDNA sequences were necessaryto separatethe basalgroups. To try to reconcile these datasets into asingle, fully resolved orthopteranphylogeny ,we adoptedconsensus andcombined datastrategies. Theconsensus analysisproduced apartially resolved tree thatlacked several well- supported features of the individual analyses.However, this lackof resolution was explained by anexamination of resampled datasets, which identied the likely source of error asthe relatively short length of the individual mitochondrial datapartitions. Inasubsequentcomparison in which the mitochondrial sequences were initially combined,we observed less conict. Wethen used two approachesto examinethe validity of combiningall of the datain asingle analysis:comparative analysisof trees recovered fromresampled datasets, andthe application of arandomizationtest. Be- cause the results did not point to signicant levels of heterogeneity in phylogenetic signalbetween the mitochondrial andnuclear datasets, we therefore proceeded with acombined -
Xenacoelomorpha's Significance for Understanding Bilaterian Evolution
Available online at www.sciencedirect.com ScienceDirect Xenacoelomorpha’s significance for understanding bilaterian evolution Andreas Hejnol and Kevin Pang The Xenacoelomorpha, with its phylogenetic position as sister biology models are the fruitfly Drosophila melanogaster and group of the Nephrozoa (Protostomia + Deuterostomia), plays the nematode Caenorhabditis elegans, in which basic prin- a key-role in understanding the evolution of bilaterian cell types ciples of developmental processes have been studied in and organ systems. Current studies of the morphological and great detail. It might be because the field of evolutionary developmental diversity of this group allow us to trace the developmental biology — EvoDevo — has its origin in evolution of different organ systems within the group and to developmental biology and not evolutionary biology that reconstruct characters of the most recent common ancestor of species under investigation are often called ‘model spe- Xenacoelomorpha. The disparity of the clade shows that there cies’. Criteria for selected representative species are cannot be a single xenacoelomorph ‘model’ species and primarily the ease of access to collected material and strategic sampling is essential for understanding the evolution their ability to be cultivated in the lab [1]. In some cases, of major traits. With this strategy, fundamental insights into the a supposedly larger number of ancestral characters or a evolution of molecular mechanisms and their role in shaping dominant role in ecosystems have played an additional animal organ systems can be expected in the near future. role in selecting model species. These arguments were Address used to attract sufficient funding for genome sequencing Sars International Centre for Marine Molecular Biology, University of and developmental studies that are cost-intensive inves- Bergen, Thormøhlensgate 55, 5008 Bergen, Norway tigations. -
Grasshoppers and Locusts (Orthoptera: Caelifera) from the Palestinian Territories at the Palestine Museum of Natural History
Zoology and Ecology ISSN: 2165-8005 (Print) 2165-8013 (Online) Journal homepage: http://www.tandfonline.com/loi/tzec20 Grasshoppers and locusts (Orthoptera: Caelifera) from the Palestinian territories at the Palestine Museum of Natural History Mohammad Abusarhan, Zuhair S. Amr, Manal Ghattas, Elias N. Handal & Mazin B. Qumsiyeh To cite this article: Mohammad Abusarhan, Zuhair S. Amr, Manal Ghattas, Elias N. Handal & Mazin B. Qumsiyeh (2017): Grasshoppers and locusts (Orthoptera: Caelifera) from the Palestinian territories at the Palestine Museum of Natural History, Zoology and Ecology, DOI: 10.1080/21658005.2017.1313807 To link to this article: http://dx.doi.org/10.1080/21658005.2017.1313807 Published online: 26 Apr 2017. Submit your article to this journal View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=tzec20 Download by: [Bethlehem University] Date: 26 April 2017, At: 04:32 ZOOLOGY AND ECOLOGY, 2017 https://doi.org/10.1080/21658005.2017.1313807 Grasshoppers and locusts (Orthoptera: Caelifera) from the Palestinian territories at the Palestine Museum of Natural History Mohammad Abusarhana, Zuhair S. Amrb, Manal Ghattasa, Elias N. Handala and Mazin B. Qumsiyeha aPalestine Museum of Natural History, Bethlehem University, Bethlehem, Palestine; bDepartment of Biology, Jordan University of Science and Technology, Irbid, Jordan ABSTRACT ARTICLE HISTORY We report on the collection of grasshoppers and locusts from the Occupied Palestinian Received 25 November 2016 Territories (OPT) studied at the nascent Palestine Museum of Natural History. Three hundred Accepted 28 March 2017 and forty specimens were collected during the 2013–2016 period. -
A Phylogenetic Analysis of Myosin Heavy Chain Type II Sequences Corroborates That Acoela and Nemertodermatida Are Basal Bilaterians
A phylogenetic analysis of myosin heavy chain type II sequences corroborates that Acoela and Nemertodermatida are basal bilaterians I. Ruiz-Trillo*, J. Paps*, M. Loukota†, C. Ribera†, U. Jondelius‡, J. Bagun˜ a` *, and M. Riutort*§ *Departament de Gene`tica and †Departament de Biologia Animal, Universitat Barcelona, Av. Diagonal, 645 08028 Barcelona, Spain; and ‡Evolutionary Biology Centre, University Uppsala, Norbyva¨gen 18D, 752 36 Uppsala, Sweden Communicated by James W. Valentine, University of California, Berkeley, CA, June 28, 2002 (received for review April 15, 2002) Bilateria are currently subdivided into three superclades: Deuter- across all bilaterians. However different, this scheme also suited ostomia, Ecdysozoa, and Lophotrochozoa. Within this new taxo- alternative hypotheses such as the ‘‘set-aside cells’’ theory (13, nomic frame, acoelomate Platyhelminthes, for a long time held to 14) and the colonial ancestor theory (15). be basal bilaterians, are now considered spiralian lophotrochozo- This new status quo was soon questioned. A SSU-based study ans. However, recent 18S rDNA [small subunit (SSU)] analyses have using a large set of Platyhelminthes acoels and other metazoans shown Platyhelminthes to be polyphyletic with two of its orders, showed acoels to be the extant earliest branching bilaterians the Acoela and the Nemertodermatida, as the earliest extant (16), turning Platyhelminthes into a polyphyletic group. In bilaterians. To corroborate such position and avoid the criticisms of addition, Jenner (17) noted that phylogenies put forward to back saturation and long-branch effects thrown on the SSU molecule, the new metazoan molecular trees (10–12, 18) were incomplete we have searched for independent molecular data bearing good and heavily pruned. -
New and Known Nemertodermatida (Platyhelminthes-Acoelomorpha)
Belg. J. Zoo!. - Volume 128 (1998) - issue 1 - pages 55-92 - Brussels 1998 Received: 18 February 1998 NEW AND KNOWN NEMERTODERMATIDA (PLATYHELMINTHES-ACOELOMORPHA)... -A REVISION - WOLFGANG STERRER Bermuda Natural History Museum, Flatts FLBX, Bermuda e-mail [email protected] Abstract. Described in 1930-31 by Steinbiick who considered it the most primitive bilaterian, the turbellarian genus Nemertoderma is known for its rote in platyhelminth phylogeny as much as for its muddled taxonomy. On the basis of material collected in the Mediterranean, Atlantic and Pacifie Oceans sin ce 1964 this paper re-diagnoses the known 4 genera and 7 species (Nemertoderma bathycola Steinbiick, 1930-31 ; N. westbladi Steinbiick, 1938; N. psammicola Sterrer, 1970 (syn. N. rubra Faubel, 1976); Meara stichopi Westblad, 1949; Meara sp. (see SMITH et al., 1994); Nemertinoides elongatus Riser, 1987 ; and Flagellophora apelti Fau bel & Diirjes, 1978), describes one new genus with 2 new species (Ascoparia neglecta n. g., n. sp. and A. secunda n. sp.), and pro vides observations from living material on morphological variability, body size vs . reproductive state, statocyst structure and statolith variability, and sperm morphology and dimorphism. The paper concludes with diagnoses for the known taxa of Nemertodermatida, including the new family Ascopariidae. Key words: Platyhelminthes, free-living, marine; systematics, new species. INTRODUCTION ln 1930-31 Otto STEfNBOCK described Nemertoderma bathycola from a single tiny worm whicb he and Erich Reisinger bad dredged from a muddy bottom, at 300-400 rn depth, off Greenland. Nemertoderma caused a small sensation, not only because Steinbock, a meticulous observer, was also an assertive character (who liked to express himself double-spaced, with exclamation marks added) but because Nemertoderma was indeed unusual. -
Frontiers in Zoology Biomed Central
Frontiers in Zoology BioMed Central Research Open Access Myogenesis in the basal bilaterian Symsagittifera roscoffensis (Acoela) Henrike Semmler*1, Xavier Bailly2 and Andreas Wanninger1 Address: 1University of Copenhagen, Department of Biology, Research Group for Comparative Zoology, Universitetsparken 15, DK-2100 Copenhagen Ø, Denmark and 2Station Station Biologique de Roscoff, Place Georges Teissier BP74, F-29682 Roscoff Cedex, France Email: Henrike Semmler* - [email protected]; Xavier Bailly - [email protected]; Andreas Wanninger - [email protected] * Corresponding author Published: 19 September 2008 Received: 5 May 2008 Accepted: 19 September 2008 Frontiers in Zoology 2008, 5:14 doi:10.1186/1742-9994-5-14 This article is available from: http://www.frontiersinzoology.com/content/5/1/14 © 2008 Semmler et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: In order to increase the weak database concerning the organogenesis of Acoela – a clade regarded by many as the earliest extant offshoot of Bilateria and thus of particular interest for studies concerning the evolution of animal bodyplans – we analyzed the development of the musculature of Symsagittifera roscoffensis using F-actin labelling, confocal laserscanning microscopy, and 3D reconstruction software. Results: At 40% of development between egg deposition and hatching short subepidermal fibres form. Muscle fibre development in the anterior body half precedes myogenesis in the posterior half. At 42% of development a grid of outer circular and inner longitudinal muscles is present in the bodywall.