Turbellarians”
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
Manual of Experimentation in Planaria
l\ MANUAL .OF PSYCHOLOGICAL EXPERIMENTATION ON PLANARIANS Ed;ted by James V. McConnell A MANUAL OF PSYCHOLOGICAL EXPERIMENTATI< ON PlANARIANS is a special publication of THE WORM RUNNER'S DIGEST James V. McConnell, Editor Mental Health Research Institute The University of Michigan Ann Arbor, Michigan BOARD OF CONSULTING EDITORS: Dr. Margaret L. Clay, Mental Health Research Institute, The University of Michigan Dr. WiHiam Corning, Department of Biophysics, Michigan State University Dr. Peter Driver, Stonehouse, Glouster, England Dr. Allan Jacobson, Department of Psychology, UCLA Dr. Marie Jenkins, Department of Biology, Madison College, Harrisonburg, Virginir Dr. Daniel P. Kimble, Department of Psychology, The University of Oregon Mrs. Reeva Jacobson Kimble, Department of Psychology, The University of Oregon Dr. Alexander Kohn, Department of Biophysics, Israel Institute for Biological Resear( Ness-Ziona, Israel Dr. Patrick Wells, Department of Biology, Occidental College, Los Angeles, Calif 01 __ Business Manager: Marlys Schutjer Circulation Manager: Mrs. Carolyn Towers Additional copies of this MANUAL may be purchased for $3.00 each from the Worm Runner's Digest, Box 644, Ann Arbor, Michigan. Information concerning subscription to the DIGEST itself may also be obtained from this address. Copyright 1965 by James V. McConnell No part of this MANUAL may be ;e�p� oduced in any form without prior written consen MANUAL OF PSYCHOLOGICAL EXPERIMENTATION ON PLANARIANS ·� �. : ,. '-';1\; DE DI�C A T 1 a'li � ac.-tJ.l that aILe. plle.J.le.l1te.cl iVl thiJ.l f, fANUA L [ve.lle. pUIlc.ilaJ.le.d blj ituVldlle.dJ.l 0& J.lc.ie.l1tiJ.ltJ.lo wil , '{'l1d.{.vidua"tlu aVld c.olle.c.t- c.aVlVlot be.g.{.Vl to l1ame. -
A Comprehensive Comparison of Sex-Inducing Activity in Asexual
Nakagawa et al. Zoological Letters (2018) 4:14 https://doi.org/10.1186/s40851-018-0096-9 RESEARCH ARTICLE Open Access A comprehensive comparison of sex-inducing activity in asexual worms of the planarian Dugesia ryukyuensis: the crucial sex-inducing substance appears to be present in yolk glands in Tricladida Haruka Nakagawa1†, Kiyono Sekii1†, Takanobu Maezawa2, Makoto Kitamura3, Soichiro Miyashita1, Marina Abukawa1, Midori Matsumoto4 and Kazuya Kobayashi1* Abstract Background: Turbellarian species can post-embryonically produce germ line cells from pluripotent stem cells called neoblasts, which enables some of them to switch between an asexual and a sexual state in response to environmental changes. Certain low-molecular-weight compounds contained in sexually mature animals act as sex-inducing substances that trigger post-embryonic germ cell development in asexual worms of the freshwater planarian Dugesia ryukyuensis (Tricladida). These sex-inducing substances may provide clues to the molecular mechanism of this reproductive switch. However, limited information about these sex-inducing substances is available. Results: Our assay system based on feeding sex-inducing substances to asexual worms of D. ryukyuensis is useful for evaluating sex-inducing activity. We used the freshwater planarians D. ryukyuensis and Bdellocephala brunnea (Tricladida), land planarian Bipalium nobile (Tricladida), and marine flatworm Thysanozoon brocchii (Polycladida) as sources of the sex-inducing substances. Using an assay system, we showed that the three Tricladida species had sufficient sex-inducing activity to fully induce hermaphroditic reproductive organs in asexual worms of D. ryukyuensis. However, the sex-inducing activity of T. brocchii was sufficient only to induce a pair of ovaries. We found that yolk glands, which are found in Tricladida but not Polycladida, may contain the sex-inducing substance that can fully sexualize asexual worms of D. -
A Comprehensive Comparison of Sex-Inducing
Nakagawa et al. Zoological Letters (2018) 4:14 https://doi.org/10.1186/s40851-018-0096-9 RESEARCH ARTICLE Open Access A comprehensive comparison of sex-inducing activity in asexual worms of the planarian Dugesia ryukyuensis: the crucial sex-inducing substance appears to be present in yolk glands in Tricladida Haruka Nakagawa1†, Kiyono Sekii1†, Takanobu Maezawa2, Makoto Kitamura3, Soichiro Miyashita1, Marina Abukawa1, Midori Matsumoto4 and Kazuya Kobayashi1* Abstract Background: Turbellarian species can post-embryonically produce germ line cells from pluripotent stem cells called neoblasts, which enables some of them to switch between an asexual and a sexual state in response to environmental changes. Certain low-molecular-weight compounds contained in sexually mature animals act as sex-inducing substances that trigger post-embryonic germ cell development in asexual worms of the freshwater planarian Dugesia ryukyuensis (Tricladida). These sex-inducing substances may provide clues to the molecular mechanism of this reproductive switch. However, limited information about these sex-inducing substances is available. Results: Our assay system based on feeding sex-inducing substances to asexual worms of D. ryukyuensis is useful for evaluating sex-inducing activity. We used the freshwater planarians D. ryukyuensis and Bdellocephala brunnea (Tricladida), land planarian Bipalium nobile (Tricladida), and marine flatworm Thysanozoon brocchii (Polycladida) as sources of the sex-inducing substances. Using an assay system, we showed that the three Tricladida species had sufficient sex-inducing activity to fully induce hermaphroditic reproductive organs in asexual worms of D. ryukyuensis. However, the sex-inducing activity of T. brocchii was sufficient only to induce a pair of ovaries. We found that yolk glands, which are found in Tricladida but not Polycladida, may contain the sex-inducing substance that can fully sexualize asexual worms of D. -
Not Your Father's Planarian: a Classic Model Enters The
REVIEWS NOT YOUR FATHER’S PLANARIAN: A CLASSIC MODEL ENTERS THE ERA OF FUNCTIONAL GENOMICS Phillip A. Newmark* and Alejandro Sánchez Alvarado‡ Freshwater planarians were a classic model for studying the problems of development and regeneration. However, as attention shifted towards animals with more rigid developmental processes, the planarians, with their notoriously plastic ontogeny, declined in significance as a model system. This trend was exacerbated with the introduction of genetic and molecular approaches, which did not work well in planarians. More recently, the heightened interest in stem- cell biology, along with the successful application of molecular, cellular and genomic approaches in planarians, is re-establishing these fascinating organisms as models for studying regeneration and developmental plasticity. PLURIPOTENCY Among the recent triumphs of molecular biology are organisms should therefore offer important insights The ability of a cell to contribute the elucidation of many of the basic mechanisms that into stem-cell biology and the emerging field of regener- to multiple tissues in a underlie embryonic development, and the demonstra- ative medicine. developing organism. If a cell is tion that these mechanisms have been strikingly con- The tremendous strides made in understanding able to contribute to all tissues, it is said to be totipotent. served between widely divergent species. Given that embryogenesis have been driven largely by genetic Abraham Trembley’s investigations of regeneration in approaches using model systems that are amenable to Hydra (published in his Mémoires in 1744) launched classical genetic analysis. Unfortunately, these model the era of experimental biology1, it is ironic that the organisms have either limited regenerative abilities problem of regeneration still awaits a satisfying mecha- (Drosophila imaginal discs, mouse and zebrafish) or nistic explanation. -
Platyhelminthes, Tricladida)
Systematics and historical biogeography of the genus Dugesia (Platyhelminthes, Tricladida) Eduard Solà Vázquez ADVERTIMENT. La consulta d’aquesta tesi queda condicionada a l’acceptació de les següents condicions d'ús: La difusió d’aquesta tesi per mitjà del servei TDX (www.tdx.cat) i a través del Dipòsit Digital de la UB (diposit.ub.edu) ha estat autoritzada pels titulars dels drets de propietat intel·lectual únicament per a usos privats emmarcats en activitats d’investigació i docència. No s’autoritza la seva reproducció amb finalitats de lucre ni la seva difusió i posada a disposició des d’un lloc aliè al servei TDX ni al Dipòsit Digital de la UB. No s’autoritza la presentació del seu contingut en una finestra o marc aliè a TDX o al Dipòsit Digital de la UB (framing). Aquesta reserva de drets afecta tant al resum de presentació de la tesi com als seus continguts. En la utilització o cita de parts de la tesi és obligat indicar el nom de la persona autora. ADVERTENCIA. La consulta de esta tesis queda condicionada a la aceptación de las siguientes condiciones de uso: La difusión de esta tesis por medio del servicio TDR (www.tdx.cat) y a través del Repositorio Digital de la UB (diposit.ub.edu) ha sido autorizada por los titulares de los derechos de propiedad intelectual únicamente para usos privados enmarcados en actividades de investigación y docencia. No se autoriza su reproducción con finalidades de lucro ni su difusión y puesta a disposición desde un sitio ajeno al servicio TDR o al Repositorio Digital de la UB. -
Pontificia Universidad Católica Del Ecuador
PONTIFICIA UNIVERSIDAD CATÓLICA DEL ECUADOR FACULTAD DE CIENCIAS EXACTAS Y NATURALES ESCUELA DE CIENCIAS BIOLÓGICAS Descripción comparada de la regeneración en planarias acuáticas de bosque montano y páramo Disertación previa a la obtención del título de Lincenciada en Ciencias Biológicas ERIKA SAMARY PINTO NOGALES Quito, 2020 A mi familia, quienes me apoyan incondicionalmente en cada etapa de mi vida A mi madre, la que me presiona para seguir adelante A mi hermana, la que me corrige y me mima A mi padre, el que me enseña cosas nuevas A mi abuelita, la que me inspira a cumplir mis metas 1 Descripción comparada de la regeneración en planarias acuáticas de bosque montano y páramo Comparative description of regeneration in aquatic planarians from paramo and montane forest Autores: Erika Pinto 1, 2 y Andrés Romero-Carvajal1, 3 1 Escuela de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Quito-Ecuador 2 [email protected] 3 [email protected] 2 RESUMEN La regeneración en planarias es un tema ampliamente estudiado en especies modelo como Schmidtea mediterránea, sin embargo, la capacidad de regeneración es variable entre los cientos de especies existentes. Esta capacidad puede estar ausente o ser restringida en algunas planarias como Bdelloura candida o Dendrocoelum lacteum. Entender esta variabilidad es importante para comprender la evolución de la capacidad regenerativa en planarias adaptadas a distintos ambientes. Sin embargo, la información sobre patrones de regeneración y proliferación celular en otras especies de planaria es limitada. En este estudio se describen las etapas de regeneración y patrones de proliferación celular en planarias acuáticas de una población de páramo del Río Pita (3359 m.s.n.m.) en Ecuador. -
A Checklist of Alien and Cryptogenic Aquatic Species in Ireland
Aquatic Invasions (2007) Volume 2, Issue 4: 341-366 DOI 10.3391/ai.2007.2.4.4 © 2007 The Author(s) Journal compilation © 2007 REABIC (http://www.reabic.net) This is an Open Access article Special issue “Alien species in European coastal waters” Geoff Boxshall, Ferdinando Boero and Sergej Olenin (Guest Editors) Research article A checklist of alien and cryptogenic aquatic species in Ireland Dan Minchin Marine Organism Investigations, Ballina, Killaloe, Co Clare, Ireland E-mail: [email protected] Received 14 May 2007; accepted in revised form 27 October 2007 Abstract One-hundred-and-twelve alien species are recorded for marine, brackish and freshwater environments in Ireland, of these sixty- eight are thought to be established. Their arrival has been mainly due to shipping, aquaculture and the ornamental industries. There are almost thirty species considered to be invasive and some that have arrived recently may have significant future impact. The majority of recorded alien species will have arrived since 1950. Usually these species appear in Britain or Northern Europe before occurring in Ireland. The majority of the marine species will have originated from the North Pacific Ocean whilst most of the freshwater species will have originally been sourced from North America. The sixty-three cryptogenic species arise out of the uncertainty of their origin or as to how they will have arrived. Ireland being a recently deglaciated island and separated from the continental land mass will have acquired the majority of its biota since the last glacial retreat making distinction between native and alien species more difficult. Key words: Ireland, Celtic Sea, aquatic species, introductions, alien, freshwater, marine, invasive, population status (Minchin 1996, 2004). -
A New List of Japanese Freshwater Planarians Based Upon a New Higher Classification of Planarian Flatworms Proposed by Sluys, Kawakatsu, Riutort & Baguñà (2009)
Kawakatsu’s Web Library on Planarians: December 25, 2009. A New List of Japanese Freshwater Planarians Based upon a New Higher Classification of Planarian Flatworms Proposed by Sluys, Kawakatsu, Riutort & Baguñà (2009) By Masaharu KAWAKATSU, Hitoshi MURAYAMA, Miyuki KAWAKATSU and Tetsuya KAWAKATSU 川勝正治 · 村山 均 · 川勝 みゆき · 川勝 哲哉 (2009): 高次分類大系の改定 に基づく日本産淡水生三岐腸類の新分類表 (英文) 摘 要 扁形動物門の三岐腸目に属する動物群は＜プラナリア類＞として知られており, 重要な実験動物を含んでいる. 最近, その高次分類体系 (綱·目·亜目·上科·科·亜 科·族など) が大幅に改定された (Sluys, Kawakatsu, Riutort & Baguñà, 2009). 従って, 日本産淡水生三岐腸類の新分類表が必要になった. 本稿では新分類体系を示す系 統樹 (Fig. 1, 科以上) と, 日本から記録されている淡水生三岐腸類の種類を示す新 分類表 (Table 1) を掲げた. 各タクサの和名 (新称を含む) も示した. なお, “渦虫 (ウズムシ綱)”という表現が長い間使われてきたが, それは特定のま とまった高次分類群を指す用語ではない. ただ, 通称としては便利な表現でもあり, 綱では無く, “渦虫 (ウズムｼ) 類” のように表記するのが望ましい. ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ - 1 - 図 1. 高次分類群を示す系統樹 (Sluys, Kawakatsu, Riutort & Baguñà, 2009 から改 写) Fig. 1. Phylogenetic tree of the higher taxa (order, suborders and superfamilies) within the Order Tricladida (after Sluys, Kawakatsu, Riutort, & Baguñà, 2009: 1767, fig. 1; modified). Japanese terms (including new ones) were added by Kawakatsu. See Table 1. Table 1 (表１). 高次分類体系の改定に基づく日本産淡水生プラナリア類の新しい 一覧表 (Sluys, Kawakatsu, Riutort & Baguñá, 2009 を参照) 扁形動物門 PLATHELMINTHES Schneider, 1873 / PLATYHELMINTHES Claus, 1887 桿系統 Rhabditophora Ehlers, 1985 新卵黄亜系統 Eulecithophora De Beauchamp, 1961 sence in Sopott-Ehlers, 1997 順列上目 Seriata Bresslau, 1933 sence in Sopott-Ehlers, 1997 三岐腸目 Tricladida Lang, 1884 I. 地下水生三岐腸亜目 Cavernicola Sluys, 1990 a. ﾒｷｼｺﾎﾗｱﾅｳｽﾞﾑｼ科 Dimarcusidae Mitchell et Kawakatsu, 1972 a). ﾌﾞﾗｼﾞﾙｳｽﾞﾑｼ属 Rhodax Marcus, 1946 1. ﾌﾞﾗｼﾞﾙｳｽﾞﾑｼ Rhodax evelinae Marcus, 1946? [EX] - 2 - II. 結合三岐腸亞目 Continenticola Carranza, Littlewood, Clough, Ruiz-Trillo, Baguñà et Riutort, 1998 A. ﾋﾗﾀｳｽﾞﾑｼ上科 Planarioidea Stimpson, 1857 b. ﾋﾗﾀｳｽﾞﾑｼ科 Planariidae Stimpson, 1857 b). ｶｽﾞﾒｳｽﾞﾑｼ属 Polycelis Ehrenberg, 1831 2. ｷﾀｼﾛｶｽﾞﾒｳｽﾞﾑｼ Polycelis sapporo (Ijima et Kaburaki, 1916) c). ｷﾀｶｽﾞﾒｳｽﾞﾑｼ属 Seidlia Zabusov, 1911 3. -
Phylogenetic Relationships of the Triclads (Platyhelminthes, Seriata
Bijdragen tot de Dierkunde, 59 (1) 3-25 (1989) SPB Academic Publishing bv, The Hague Phylogenetic relationships of the triclads (Platyhelminthes, Seriata, Tricladida) Ronald Sluys Institute of Taxonomic Zoology, University of Amsterdam, P.O. Box 4766, 1009 AT Amsterdam, The Netherlands Keywords: Plathyhelminthes, Tricladida, phylogeny la Abstract da; parmi ceux-ci, un développementembryonnaire unique et présence d’une zonemarginale adhésive. 4. On considère les Maricola comme group-frère plus primitif 1. A phylogenetic hypothesis for the triclads is presented and de la paire de taxa Terricola + Paludicola, et les Paludicola the characters on which it is based are discussed. le le dérivé des Tricladida. Sont comme représentant groupe plus formed the Bothrio- 2. The sister group of the Tricladida is by discutés les caractères venant à l’appui de ces hypothèses (Fig. planida, and together the two taxa share a sistergroup relation- 1, caractères 14—16 et respectivement 20—22). ship with the Proseriata. 5. Au sein des Paludicola, les Planariidae et les Dendrocoelii- 3. The monophyletic status of the suborder Tricladida is sup- dae représentent ensemble le groupe-frère des Dugesiidae (Fig. ported by several derived features (Fig. 1., characters 9—12), in- 1, caractère 24). cluding a uniqueembryological developmentand the presence of 6. A l’appui du statut monophylétique des Maricola et des a marginal adhesive zone. Terricola on mentionne un caractère, et respectivement trois 4. It is postulated that the Maricola is the primitive sister caractères apomorphes (Fig. 1, caractère 13, et respectivement the that group of the Terricola and Paludicola together and the 17—19). advanced within the Tri- Paludicola represents the most group 7. -
Revised List of the North American Freshwater Planarians (Platyhelminthes: Tricladida: Paludicola)
Revised List of the North American Freshwater Planarians (Platyhelminthes: Tricladida: Paludicola) ROMAN KENK SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 476 SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of "diffusing knowledge" was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology Smithsonian Folklife Studies Smithsonian Studies in Air and Space Smithsonian Studies in History and Technology In these series, the Institution publishes small papers and full-scale monographs that report the research and collections of its various museums and bureaux or of professional colleagues in the world of science and scholarship. The publications are distributed by mailing lists to libraries, universities, and similar institutions throughout the world. Papers or monographs submitted for series publication are received by the Smithsonian Institution Press, subject to its own review for format and style, only through departments of the various Smithsonian museums or bureaux, where the manuscripts are given substantive review. -
Tricladida: Dugesiidae) from China
Zoological Systematics, 40(2): 166–178 (April 2015), DOI: 10.11865/zs.20150202 ORIGINAL ARTICLE A new species of the genus Girardia (Tricladida: Dugesiidae) from China Xiao-Min Chen1, Yu-Hui Chen1, Cheng-Chen Wu2, An-Tai Wang1* 1 College of Life Science, Shenzhen Key Laboratory of Marine Bioresources and Ecology, Shenzhen 518060, China 2 Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 310029, China * Corresponding author, E-mail: [email protected] Abstract The genus Girardia (Tricladida: Dugesiidae) was recorded in China for the first time. A new freshwater turbellarian species, G. sinensis Chen & Wang, sp. nov., is described, which was collected from Xinghu Lake, Zhaoqing, Guangdong Province, China. Observation and analysis of the new species was conducted on morphology, habits, reproduction, histochemistry and molecular phylogenetics. In addition, the results indicated that morphological differences of AChE+ nerve structure can be used as a distinguishable character for species identification of Dugesiidae. Key words Planarian, new species, China, biological characteristics, phylogenetics. 1 Introduction According to the animal geographical fauna division, the Chinese mainland stretches over Palearctic Realm and Oriental Realm, and it is rich in species diversity. However, studies on taxonomy of turbellarian in China are rare. At the end of the 1900s, only 16 species of turbellarians from order Tricladida were recorded as following: Dendrocoelopsis lactea Ichikawa & Okugawa, 1958; D. sinensis Liu, 1997; D. Suifenhensis Liu, 1997; Bdellocephala sp. Liu, 1990; Phagocata vivida Ijima & Kaburaki, 1916; Polycelis nyingchica Liu, 1994; P. xigazensis Liu, 1994; P. s in e ns is Liu, 1995; P. lhunzhubica Liu, 1995; P. wutaishanica Liu, 1996; P. -
1 Program Overview. Pages 2-8 Keynote Abstract: Professor Phillip
Program Overview. Pages 2-8 Keynote Abstract: Professor Phillip A. Newmark Page 9 Alphabetical List of ISFB Invited Speaker Abstracts Pages 10-22 Selected presentation abstracts for ISFB Pages 23-55 Abstracts for One Day Planarian meeting Pages 56-64 ISFB poster presentation abstracts Pages 65-93 1 Program overview ISFB Conference August 3rd-6th, Lady Margaret Hall, University of Oxford. and European Planarian meeting August 6th -7th, Lady Margaret Hall, University of Oxford, SL= Simpkins Lee Lecture Theatre. MR= Monson Room. Monday August 3rd 13.00-16.30 pm Registration at LMH and put up posters (in MR). from 15.45- coffee and cake (MR) 17.00-17.05 Welcome (SL). Session 1 (17.05-19.40, SL) Chair: Peter Olson 17.05-17.40 Paul Brindley "Lentivirus HIV-1 integrates widely throughout the genome of the human blood fluke Schistosoma mansoni" 17.40-18.05 Kathrin Geyer “Unraveling DNA methylation in the blood fluke Schistosoma mansoni” 18.05-18.30 Tania Rozario “Characterization of growth and regenerative potential of the rat intestinal tapeworm, Hymenolepis diminuta, cultured in vitro” 18.30-19.05 Tim Littlewood "Flatworms with complex parasitic life cycles" 19.05-19.55 “optional 3 minute lightning talks for odd numbered Poster presentations” 19.55 First Poster session focus on odd numbers (drinks, canapés and food) Tuesday August 4th Session 2 (9.00-13.00, SL) Chair: Teresa Adell 9.00-9.35 Colette Dissous “Venus Kinase Receptors in the control of reproduction” 9.35-10.10 Uriel Koziol “The Wnt pathway and the evolution of tapeworm development” 10.10-10.35 Pete Olson “Planarians to Parasitism: identifying signals and switches of development in tapeworms” 2 Coffee break 11.00-11.35 Peter Ladurner “Biological Adhesion in Flatworms” 11.35-12.00 Stijn Mouton “The influence of regeneration on ageing of the flatworm Macrostomum lignano” 12.00-12.25 Julian P.S.