Who Would've Imagined a Lowly Sea Slug Boasting a Radiant Color
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Frontiers in Zoology Biomed Central
Frontiers in Zoology BioMed Central Research Open Access Functional chloroplasts in metazoan cells - a unique evolutionary strategy in animal life Katharina Händeler*1, Yvonne P Grzymbowski1, Patrick J Krug2 and Heike Wägele1 Address: 1Zoologisches Forschungsmuseum Alexander Koenig, Adenauerallee 160, 53113 Bonn, Germany and 2Department of Biological Sciences, California State University, Los Angeles, California, 90032-8201, USA Email: Katharina Händeler* - [email protected]; Yvonne P Grzymbowski - [email protected]; Patrick J Krug - [email protected]; Heike Wägele - [email protected] * Corresponding author Published: 1 December 2009 Received: 26 June 2009 Accepted: 1 December 2009 Frontiers in Zoology 2009, 6:28 doi:10.1186/1742-9994-6-28 This article is available from: http://www.frontiersinzoology.com/content/6/1/28 © 2009 Händeler 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: Among metazoans, retention of functional diet-derived chloroplasts (kleptoplasty) is known only from the sea slug taxon Sacoglossa (Gastropoda: Opisthobranchia). Intracellular maintenance of plastids in the slug's digestive epithelium has long attracted interest given its implications for understanding the evolution of endosymbiosis. However, photosynthetic ability varies widely among sacoglossans; some species have no plastid retention while others survive for months solely on photosynthesis. We present a molecular phylogenetic hypothesis for the Sacoglossa and a survey of kleptoplasty from representatives of all major clades. We sought to quantify variation in photosynthetic ability among lineages, identify phylogenetic origins of plastid retention, and assess whether kleptoplasty was a key character in the radiation of the Sacoglossa. -
The Phylogenetic Position of a New Species of Plakobranchus from West Papua, Indonesia (Mollusca, Opisthobranchia, Sacoglossa)
PDF hosted at the Radboud Repository of the Radboud University Nijmegen The following full text is a publisher's version. For additional information about this publication click this link. http://hdl.handle.net/2066/162041 Please be advised that this information was generated on 2021-09-23 and may be subject to change. A peer-reviewed open-access journal ZooKeys 594: 73–98The (2016)phylogenetic position of a new species of Plakobranchus from West Papua... 73 doi: 10.3897/zookeys.594.5954 RESEARCH ARTICLE http://zookeys.pensoft.net Launched to accelerate biodiversity research The phylogenetic position of a new species of Plakobranchus from West Papua, Indonesia (Mollusca, Opisthobranchia, Sacoglossa) María Angélica Meyers-Muñoz1, Gerard van der Velde1,2, Sancia E.T. van der Meij2,3, Bart E.M.W. Stoffels1, Theo van Alen4, Yosephine Tuti5, Bert W. Hoeksema2 1 Radboud University Nijmegen, Institute for Water and Wetland Research, Department of Animal Ecology and Physiology, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands2 Naturalis Biodiversity Center, Dar- winweg 2, 2333 CR Leiden, The Netherlands 3 Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, United Kingdom 4 Radboud University Nijmegen, Institute for Water and Wetland Rese- arch, Department of Microbiology, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands5 Research Centre for Oceanography (RCO), Indonesian Institute of Sciences (LIPI), Jl. Pasir Putih I, Ancol Timur, Jakarta 14430, Indonesia Corresponding author: Bert W. Hoeksema ([email protected]) Academic editor: N. Yonow | Received 29 October 2014 | Accepted 9 May 2016 | Published 30 May 2016 http://zoobank.org/570A4DC3-0CA8-4F7A-967F-3AED002FC3F4 Citation: Meyers-Muñoz MA, van der Velde G, van der Meij SET, Stoffels BEMW, van Alen T, Tuti Y, Hoeksema BW (2016) The phylogenetic position of a new species of Plakobranchus from West Papua, Indonesia (Mollusca, Opisthobranchia, Sacoglossa). -
Solar-Powered Sea Slugs
© Jupiterimages Corp. Matching Draw a line to match each word on the right with the group of words on the left that relate to it. © Learning A–Z.com presented by Science a-z a division of Learning A-Z creature, pet, plant critter, wild Solar-Powered Sea Slugs hot, bright, animal By Ron Fridell ray, daytime One animal is unlike any supply. It’s part plant and deadly, hunt, sea other known animal on part animal. You could call it enemy, prey Earth. It’s a species of sea a planimal! slug called Elysia chlorotica. eat, energy, sunlight This creature lives in ocean This creature looks like a diet, hungry waters along the eastern green leaf swimming in United States. What makes the sea. Its favorite meal is stem, leaf, swim it so special? Like an animal, green sea plants called algae. green, flower it eats food. But like a plant, Sounds yummy, right? But E. it also makes its own food chlorotica only needs to eat wave, salt, predator one meal of algae at fish, algae the very beginning of its life. So how does float, dive, defend it get the energy it water, wade needs to survive after protect, guard, food it stops eating? help, watch © iStockphoto.com/ Rebecca Lowe © Nick Curtis and Ray Martinez Elysia chlorotica © Jupiterimages Corp. See Solar Sea Slugs on page 2 © Learning A–Z All rights reserved. 4 www.sciencea-z.com 1 Solar Sea Slugs Continued from page 1 Write About This! What would it be like if you could make your own food inside © iStockphoto.com/Leo Blanchette your body instead of eating? Don’t bother How would your life be different? © iStockphoto.com/Zurijeta looking for What would be the pros and planimal in cons? Use your answers to help a dictionary. -
Biodiversity Journal, 2020, 11 (4): 861–870
Biodiversity Journal, 2020, 11 (4): 861–870 https://doi.org/10.31396/Biodiv.Jour.2020.11.4.861.870 The biodiversity of the marine Heterobranchia fauna along the central-eastern coast of Sicily, Ionian Sea Andrea Lombardo* & Giuliana Marletta Department of Biological, Geological and Environmental Sciences - Section of Animal Biology, University of Catania, via Androne 81, 95124 Catania, Italy *Corresponding author: [email protected] ABSTRACT The first updated list of the marine Heterobranchia for the central-eastern coast of Sicily (Italy) is here reported. This study was carried out, through a total of 271 scuba dives, from 2017 to the beginning of 2020 in four sites located along the Ionian coasts of Sicily: Catania, Aci Trezza, Santa Maria La Scala and Santa Tecla. Through a photographic data collection, 95 taxa, representing 17.27% of all Mediterranean marine Heterobranchia, were reported. The order with the highest number of found species was that of Nudibranchia. Among the study areas, Catania, Santa Maria La Scala and Santa Tecla had not a remarkable difference in the number of species, while Aci Trezza had the lowest number of species. Moreover, among the 95 taxa, four species considered rare and six non-indigenous species have been recorded. Since the presence of a high diversity of sea slugs in a relatively small area, the central-eastern coast of Sicily could be considered a zone of high biodiversity for the marine Heterobranchia fauna. KEY WORDS diversity; marine Heterobranchia; Mediterranean Sea; sea slugs; species list. Received 08.07.2020; accepted 08.10.2020; published online 20.11.2020 INTRODUCTION more researches were carried out (Cattaneo Vietti & Chemello, 1987). -
The Identification of Functional, Sequestered, Symbiotic Chloroplasts
University of South Florida Scholar Commons Graduate Theses and Dissertations Graduate School 2006 The identification of functional, sequestered, symbiotic chloroplasts in Elysia clarki: A crucial step in the study of horizontally transferred, nuclear algal genes Nicholas E. Curtis University of South Florida Follow this and additional works at: http://scholarcommons.usf.edu/etd Part of the American Studies Commons Scholar Commons Citation Curtis, Nicholas E., "The identification of functional, sequestered, symbiotic chloroplasts in Elysia clarki: A crucial step in the study of horizontally transferred, nuclear algal genes" (2006). Graduate Theses and Dissertations. http://scholarcommons.usf.edu/etd/2496 This Dissertation is brought to you for free and open access by the Graduate School at Scholar Commons. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Scholar Commons. For more information, please contact [email protected]. The Identification of Functional, Sequestered, Symbiotic Chloroplasts in Elysia clarki: A Crucial Step in the Study of Horizontally Transferred, Nuclear Algal Genes by Nicholas E. Curtis A thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy Department of Biology College of Arts and Sciences University of South Florida Major Professor: Sidney K. Pierce, Jr., Ph.D. Clinton J. Dawes, Ph.D. Kathleen M. Scott, Ph.D. Brian T. Livingston, Ph.D. Date of Approval: June 15, 2006 Keywords: Bryopsidales, kleptoplasty, sacoglossan, rbcL, chloroplast symbiosis Penicillus, Halimeda, Bryopsis, Derbesia © Copyright 2006, Nicholas E. Curtis Note to Reader The original of this document contains color that is necessary for understanding the data. The original dissertation is on file with the USF library in Tampa, Florida. -
Epibenthic Mobile Invertebrates Along the Florida Reef Tract: Diversity and Community Structure Kristin Netchy University of South Florida, [email protected]
University of South Florida Scholar Commons Graduate Theses and Dissertations Graduate School 3-21-2014 Epibenthic Mobile Invertebrates along the Florida Reef Tract: Diversity and Community Structure Kristin Netchy University of South Florida, [email protected] Follow this and additional works at: https://scholarcommons.usf.edu/etd Part of the Ecology and Evolutionary Biology Commons, Other Education Commons, and the Other Oceanography and Atmospheric Sciences and Meteorology Commons Scholar Commons Citation Netchy, Kristin, "Epibenthic Mobile Invertebrates along the Florida Reef Tract: Diversity and Community Structure" (2014). Graduate Theses and Dissertations. https://scholarcommons.usf.edu/etd/5085 This Thesis is brought to you for free and open access by the Graduate School at Scholar Commons. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Scholar Commons. For more information, please contact [email protected]. Epibenthic Mobile Invertebrates along the Florida Reef Tract: Diversity and Community Structure by Kristin H. Netchy A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science Department of Marine Science College of Marine Science University of South Florida Major Professor: Pamela Hallock Muller, Ph.D. Kendra L. Daly, Ph.D. Kathleen S. Lunz, Ph.D. Date of Approval: March 21, 2014 Keywords: Echinodermata, Mollusca, Arthropoda, guilds, coral, survey Copyright © 2014, Kristin H. Netchy DEDICATION This thesis is dedicated to Dr. Gustav Paulay, whom I was fortunate enough to meet as an undergraduate. He has not only been an inspiration to me for over ten years, but he was the first to believe in me, trust me, and encourage me. -
Chloroplast Incorporation and Long-Term Photosynthetic Performance Through the Life Cycle in Laboratory Cultures of Elysia Timid
Chloroplast incorporation and long-term photosynthetic performance through the life cycle in laboratory cultures of Elysia timida (Sacoglossa, Heterobranchia) Schmitt et al. Schmitt et al. Frontiers in Zoology 2014, 11:5 http://www.frontiersinzoology.com/content/11/1/5 Schmitt et al. Frontiers in Zoology 2014, 11:5 http://www.frontiersinzoology.com/content/11/1/5 RESEARCH Open Access Chloroplast incorporation and long-term photosynthetic performance through the life cycle in laboratory cultures of Elysia timida (Sacoglossa, Heterobranchia) Valerie Schmitt1,2, Katharina Händeler2, Susanne Gunkel2, Marie-Line Escande3, Diedrik Menzel4, Sven B Gould2, William F Martin2 and Heike Wägele1* Abstract Introduction: The Mediterranean sacoglossan Elysia timida is one of the few sea slug species with the ability to sequester chloroplasts from its food algae and to subsequently store them in a functional state in the digestive gland cells for more than a month, during which time the plastids retain high photosynthetic activity (= long-term retention). Adult E. timida have been described to feed on the unicellular alga Acetabularia acetabulum in their natural environment. The suitability of E. timida as a laboratory model culture system including its food source was studied. Results: In contrast to the literature reporting that juvenile E. timida feed on Cladophora dalmatica first, and later on switch to the adult diet A. acetabulum, the juveniles in this study fed directly on A. acetabulum (young, non-calcified stalks); they did not feed on the various Cladophora spp. (collected from the sea or laboratory culture) offered. This could possibly hint to cryptic speciation with no clear morphological differences, but incipient ecological differentiation. -
Table of Contents
ALL INDIA CO-ORDINATED PROJECT ON TAXONOMY OF MOLLUSCA ANNUAL REPORT (December 2016 – May 2018) GUJARAT STATE BOMBAY NATURAL HISTORY SOCIETY Dr. Deepak Apte Director Dr. Dishant Parasharya Dr. Bhavik Patel Scientist – B Scientist – B All India Coordinated Project on Taxonomy – Mollusca , Gujarat State Acknowledgements We are thankful to the Department of Forest and Environment, Government of Gujarat, Mr. G. K. Sinha, IFS HoFF and PCCF (Wildlife) for his guidance and cooperation in the work. We are thankful to then CCF Marine National Park and Sanctuary, Mr. Shyamal Tikader IFS, Mr. S. K. Mehta IFS and their team for the generous support, We take this opportunity to thank the entire team of Marine National Park and Sanctuary. We are thankful to all the colleagues of BNHS who directly or indirectly helped us in our work. We specially thank our field assistant, Rajesh Parmar who helped us in the field work. All India Coordinated Project on Taxonomy – Mollusca , Gujarat State 1. Introduction Gujarat has a long coastline of about 1650 km, which is mainly due to the presence of two gulfs viz. the Gulf of Khambhat (GoKh) and Gulf of Kachchh (GoK). The coastline has diverse habitats such as rocky, sandy, mangroves, coral reefs etc. The southern shore of the GoK in the western India, notified as Marine National Park and Sanctuary (MNP & S), harbours most of these major habitats. The reef areas of the GoK are rich in flora and fauna; Narara, Dwarka, Poshitra, Shivrajpur, Paga, Boria, Chank and Okha are some of these pristine areas of the GoK and its surrounding environs. -
Chloroplast Genes Are Expressed During Intracellular Symbiotic
Proc. Natl. Acad. Sci. USA Vol. 93, pp. 12333-12338, October 1996 Cell Biology Chloroplast genes are expressed during intracellular symbiotic association of Vaucheria litorea plastids with the sea slug Elysia chlorotica (photosystem II reaction center/photosynthesis/chromophytic alga/ascoglossan mollusc/gene expression) CESAR V. MUJER*t, DAVID L. ANDREWS*t, JAMES R. MANHART§, SIDNEY K. PIERCES, AND MARY E. RUMPHO*II Departments of *Horticultural Sciences and §Biology, Texas A & M University, College Station, TX 77843; and IDepartment of Zoology, University of Maryland, College Park, MD 20742 Communicated by Martin Gibbs, Brandeis University, Waltham, MA, August 16, 1996 (received for review January 26, 1996) ABSTRACT The marine slug Elysia chlorotica (Gould) lowing metamorphosis from the veliger stage when juvenile forms an intracellular symbiosis with photosynthetically ac- sea slugs begin to feed on V litorea cells (1, 2). Once ingested, tive chloroplasts from the chromophytic alga Vaucheria litorea the chloroplasts are phagocytically incorporated into the cy- (C. Agardh). This symbiotic association was characterized toplasm of one of two morphologically distinct, epithelial cells over a period of 8 months during which E. chlorotica was (3) and maintain their photosynthetic function (1, 3). The deprived of V. litorea but provided with light and CO2. The fine plastids are frequently found in direct contact with the host structure of the symbiotic chloroplasts remained intact in E. cytoplasm as revealed by ultrastructural studies (3). In nature, chlorotica even after 8 months of starvation as revealed by the adult animal feeds on algae only sporadically, obtaining electron microscopy. Southern blot analysis of total DNA metabolic energy from the photosynthetic activity of the from E. -
Acute and Sub Acute Toxicity Study of Ethanolic Extract of Plakobranchus Ocellatus on Female Wistar Rats
Available online at www.ijpab.com Priyanka et al Int. J. Pure App. Biosci. 4 (6): 143-152 (2016) ISSN: 2320 – 7051 DOI: http://dx.doi.org/10.18782/2320-7051.2410 ISSN: 2320 – 7051 Int. J. Pure App. Biosci. 4 (6): 143-152 (2016) Research Article Acute and Sub Acute Toxicity Study of Ethanolic Extract of Plakobranchus ocellatus on Female Wistar Rats Priyanka Devi1, K. Revathi2 and C. Raghunathan* 1,2Ethiraj College for Women, Chennai, Tamil Nadu, India *Zoological Survey of India *Corresponding Author E-mail: [email protected] Received: 26.11.2016 | Revised: 8.12.2016 | Accepted: 14.12.2016 ABSTRACT The sea slugs Plakobranchus ocellatus (Sacoglossa, Gastropoda) possess naturally photo synthetically active chloroplasts from ingested algae (functional kleptoplasts) in the epithelial cells of its digestive gland that is retained up to 10 months.). The present study aimed to evaluate the safety use of the acute toxicity of the crude ethanolic extract of Plakobranchus ocellatus that was evaluated by administration of the extract by intra peritoneal route to the female wistar rats. A single extract dose of 500, 1000, 1500, 2000, 2500, 3000 and 3500 mg/kg body weight) respectively and observed for 14 days. For sub-acute toxicity studiesthe most effective extracts of nudibranchwhich showed minimum toxic effect for the development of medicine was weighed and titrated slowly by using 2% Acacia gum till a uniform suspension was formed. On 28th day, the treated animals were sacrificed and blood samples were collected by orbital sinus. The organs such as liver, spleen, and kidney were processed to study, hematological and histopathological changes. -
DNA Barcoding Reveal Patterns of Species Diversity Among
www.nature.com/scientificreports OPEN DNA barcoding reveal patterns of species diversity among northwestern Pacific molluscs Received: 04 April 2016 Shao’e Sun, Qi Li, Lingfeng Kong, Hong Yu, Xiaodong Zheng, Ruihai Yu, Lina Dai, Yan Sun, Accepted: 25 August 2016 Jun Chen, Jun Liu, Lehai Ni, Yanwei Feng, Zhenzhen Yu, Shanmei Zou & Jiping Lin Published: 19 September 2016 This study represents the first comprehensive molecular assessment of northwestern Pacific molluscs. In total, 2801 DNA barcodes belonging to 569 species from China, Japan and Korea were analyzed. An overlap between intra- and interspecific genetic distances was present in 71 species. We tested the efficacy of this library by simulating a sequence-based specimen identification scenario using Best Match (BM), Best Close Match (BCM) and All Species Barcode (ASB) criteria with three threshold values. BM approach returned 89.15% true identifications (95.27% when excluding singletons). The highest success rate of congruent identifications was obtained with BCM at 0.053 threshold. The analysis of our barcode library together with public data resulted in 582 Barcode Index Numbers (BINs), 72.2% of which was found to be concordantly with morphology-based identifications. The discrepancies were divided in two groups: sequences from different species clustered in a single BIN and conspecific sequences divided in one more BINs. In Neighbour-Joining phenogram, 2,320 (83.0%) queries fromed 355 (62.4%) species-specific barcode clusters allowing their successful identification. 33 species showed paraphyletic and haplotype sharing. 62 cases are represented by deeply diverged lineages. This study suggest an increased species diversity in this region, highlighting taxonomic revision and conservation strategy for the cryptic complexes. -
Molecular Phylogenetic Analysis of Genera in the Family Plakobranchidae (Mollusca: Opisthobranchia: Sacoglossa)
DOI: 10.18195/issn.0313-122x.69.2006.061-068 Records of the Western Australian Museum Supplement No. 69: 61-68 (2006). Molecular phylogenetic analysis of genera in the family Plakobranchidae (Mollusca: Opisthobranchia: Sacoglossa) Anna 1. BassI and Stephen A. KarF Department of Biology, SCA 110, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida 33620 USA 1 To whom correspondence should be addressed: Email: [email protected] 2 Current address: The Hawai'i Institute of Marine Biology, University of Hawai'i, Manoa, P.O. Box 1346, Kane'ohe, Hawai'i, 96744, Email: skarl@hawaiLedu Abstract - Genera in the largest family of the suborder Sacoglossa (Mollusca; Opisthobranchia), the Plakobranchidae Gray, 1840, have been systematically revised numerous times since the 1800s. Several authors have questioned the validity and inter-relationships of the genera Tridachia Moerch, 1863, Tridachiella MacFarland, 1924, Elysiella Bergh, 1872, Pattydaya Marcus, 1982, Elysia Risso, 1818, and Thuridilla Bergh, 1872. For many other groups, molecular data have proven fruitful in determining the systematic relationships of organisms for which few suitable morphological characters are available. Using DNA sequence data from one nuclear (Histone 3) and two mitochondrial genes (Cytochrome Oxidase subunit I and large ribosomal subunit), we infer the phylogenetic relationships among five of the seven recently recognized genera within the Plakobranchidae. These data question the monophyly of the genus Elysia and suggest that further divisions within the genus may be necessary. Additionally, it appears that the family Boselliidae Marcus, 1982 may be, at least, paraphyletic since one member of the genus Bosellia Trinchese, 1891, clusters within the family Plakobranchidae.