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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. -
Morphometric Analysis of Surface Utricles in Halimeda Tuna (Bryopsidales, Ulvophyceae) Reveals Variation in Their Size and Symmetry Within Individual Segments
S S symmetry Article Morphometric Analysis of Surface Utricles in Halimeda tuna (Bryopsidales, Ulvophyceae) Reveals Variation in Their Size and Symmetry within Individual Segments Jiri Neustupa * and Yvonne Nemcova Department of Botany, Faculty of Science, Charles University, Prague, 12801 Benatska 2, Czech Republic; [email protected] * Correspondence: [email protected] Received: 26 June 2020; Accepted: 20 July 2020; Published: 1 August 2020 Abstract: Calcifying marine green algae of genus Halimeda have siphonous thalli composed of repeated segments. Their outer surface is formed by laterally appressed peripheral utricles which often form a honeycomb structure, typically with varying degrees of asymmetry in the individual polygons. This study is focused on a morphometric analysis of the size and symmetry of these polygons in Mediterranean H. tuna. Asymmetry of surface utricles is studied using a continuous symmetry measure quantifying the deviation of polygons from perfect symmetry. In addition, the segment shapes are also captured by geometric morphometrics and compared to the utricle parameters. The area of surface utricles is proved to be strongly related to their position on segments, where utricles near the segment bases are considerably smaller than those located near the apical and lateral margins. Interestingly, this gradient is most pronounced in relatively large reniform segments. The polygons are most symmetric in the central parts of segments, with asymmetry uniformly increasing towards the segment margins. Mean utricle asymmetry is found to be unrelated to segment shapes. Systematic differences in utricle size across different positions might be related to morphogenetic patterns of segment development, and may also indicate possible small-scale variations in CaCO3 content within segments. -
50 Annual Meeting of the Phycological Society of America
50th Annual Meeting of the Phycological Society of America August 10-13 Drexel University Philadelphia, PA The Phycological Society of America (PSA) was founded in 1946 to promote research and teaching in all fields of Phycology. The society publishes the Journal of Phycology and the Phycological Newsletter. Annual meetings are held, often jointly with other national or international societies of mutual member interest. PSA awards include the Bold Award for the best student paper at the annual meeting, the Lewin Award for the best student poster at the annual meeting, the Provasoli Award for outstanding papers published in the Journal of Phycology, The PSA Award of Excellence (given to an eminent phycologist to recognize career excellence) and the Prescott Award for the best Phycology book published within the previous two years. The society provides financial aid to graduate student members through Croasdale Fellowships for enrollment in phycology courses, Hoshaw Travel Awards for travel to the annual meeting and Grants-In-Aid for supporting research. To join PSA, contact the membership director or visit the website: www.psaalgae.org LOCAL ORGANIZERS FOR THE 2015 PSA ANNUAL MEETING: Rick McCourt, Academy of Natural Sciences of Drexel University Naomi Phillips, Arcadia University PROGRAM DIRECTOR FOR 2015: Dale Casamatta, University of North Florida PSA OFFICERS AND EXECUTIVE COMMITTEE President Rick Zechman, College of Natural Resources and Sciences, Humboldt State University Past President John W. Stiller, Department of Biology, East Carolina University Vice President/President Elect Paul W. Gabrielson, Hillsborough, NC International Vice President Juliet Brodie, Life Sciences Department, Genomics and Microbial Biodiversity Division, Natural History Museum, Cromwell Road, London Secretary Chris Lane, Department of Biological Sciences, University of Rhode Island, Treasurer Eric W. -
Neoproterozoic Origin and Multiple Transitions to Macroscopic Growth in Green Seaweeds
Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds Andrea Del Cortonaa,b,c,d,1, Christopher J. Jacksone, François Bucchinib,c, Michiel Van Belb,c, Sofie D’hondta, f g h i,j,k e Pavel Skaloud , Charles F. Delwiche , Andrew H. Knoll , John A. Raven , Heroen Verbruggen , Klaas Vandepoeleb,c,d,1,2, Olivier De Clercka,1,2, and Frederik Leliaerta,l,1,2 aDepartment of Biology, Phycology Research Group, Ghent University, 9000 Ghent, Belgium; bDepartment of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Zwijnaarde, Belgium; cVlaams Instituut voor Biotechnologie Center for Plant Systems Biology, 9052 Zwijnaarde, Belgium; dBioinformatics Institute Ghent, Ghent University, 9052 Zwijnaarde, Belgium; eSchool of Biosciences, University of Melbourne, Melbourne, VIC 3010, Australia; fDepartment of Botany, Faculty of Science, Charles University, CZ-12800 Prague 2, Czech Republic; gDepartment of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742; hDepartment of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138; iDivision of Plant Sciences, University of Dundee at the James Hutton Institute, Dundee DD2 5DA, United Kingdom; jSchool of Biological Sciences, University of Western Australia, WA 6009, Australia; kClimate Change Cluster, University of Technology, Ultimo, NSW 2006, Australia; and lMeise Botanic Garden, 1860 Meise, Belgium Edited by Pamela S. Soltis, University of Florida, Gainesville, FL, and approved December 13, 2019 (received for review June 11, 2019) The Neoproterozoic Era records the transition from a largely clear interpretation of how many times and when green seaweeds bacterial to a predominantly eukaryotic phototrophic world, creat- emerged from unicellular ancestors (8). ing the foundation for the complex benthic ecosystems that have There is general consensus that an early split in the evolution sustained Metazoa from the Ediacaran Period onward. -
Energetic Costs of Chronic Fish Predation on Reef-Building Corals
ResearchOnline@JCU This file is part of the following reference: Cole, Andrew (2011) Energetic costs of chronic fish predation on reef-building corals. PhD thesis, James Cook University. Access to this file is available from: http://researchonline.jcu.edu.au/37611/ The author has certified to JCU that they have made a reasonable effort to gain permission and acknowledge the owner of any third party copyright material included in this document. If you believe that this is not the case, please contact [email protected] and quote http://researchonline.jcu.edu.au/37611/ The energetic costs of chronic fish predation on reef-building corals Thesis submitted by Andrew Cole BSc (Hons) September 2011 For the degree of Doctor of Philosophy in Marine Biology ARC Centre of Excellence for Coral Reef Studies and the School of Marine and Tropical Biology James Cook University Townsville, Queensland, Australia Statement of Access I, the undersigned, the author of this thesis, understand that James Cook University will make it available for use within the University Library and via the Australian Digital Thesis Network for use elsewhere. I understand that as an unpublished work this thesis has significant protection under the Copyright Act and I do not wish to put any further restrictions upon access to this thesis. 09/09/2011 (signature) (Date) ii Statement of Sources Declaration I declare that this thesis is my own work and has not been submitted in any form for another degree or diploma at my university or other institution of tertiary education. Information derived from the published or unpublished work of others has been acknowledged in the text and a list of references is given. -
Reef Fishes of the Bird's Head Peninsula, West
Check List 5(3): 587–628, 2009. ISSN: 1809-127X LISTS OF SPECIES Reef fishes of the Bird’s Head Peninsula, West Papua, Indonesia Gerald R. Allen 1 Mark V. Erdmann 2 1 Department of Aquatic Zoology, Western Australian Museum. Locked Bag 49, Welshpool DC, Perth, Western Australia 6986. E-mail: [email protected] 2 Conservation International Indonesia Marine Program. Jl. Dr. Muwardi No. 17, Renon, Denpasar 80235 Indonesia. Abstract A checklist of shallow (to 60 m depth) reef fishes is provided for the Bird’s Head Peninsula region of West Papua, Indonesia. The area, which occupies the extreme western end of New Guinea, contains the world’s most diverse assemblage of coral reef fishes. The current checklist, which includes both historical records and recent survey results, includes 1,511 species in 451 genera and 111 families. Respective species totals for the three main coral reef areas – Raja Ampat Islands, Fakfak-Kaimana coast, and Cenderawasih Bay – are 1320, 995, and 877. In addition to its extraordinary species diversity, the region exhibits a remarkable level of endemism considering its relatively small area. A total of 26 species in 14 families are currently considered to be confined to the region. Introduction and finally a complex geologic past highlighted The region consisting of eastern Indonesia, East by shifting island arcs, oceanic plate collisions, Timor, Sabah, Philippines, Papua New Guinea, and widely fluctuating sea levels (Polhemus and the Solomon Islands is the global centre of 2007). reef fish diversity (Allen 2008). Approximately 2,460 species or 60 percent of the entire reef fish The Bird’s Head Peninsula and surrounding fauna of the Indo-West Pacific inhabits this waters has attracted the attention of naturalists and region, which is commonly referred to as the scientists ever since it was first visited by Coral Triangle (CT). -
Unihi-Seagrant-Ar-06-04
REPORT DOCUMENTATION FORM WATER RESOURCES RESEARCH CENTER University of Hawai‘i at Ma¯noa 1 SERIES 2 COWRR NUMBER Project Report PR-2005-05 FIELD-GROUP 05-C 3 TITLE 4 REPORT DATE January 2005 A survey of selected coral and fish assemblages near 5 NO. OF the Waianae Ocean Outfall, Oahu, Hawaii, 2004 PAGES viii + 20 6 NO. OF 7 NO. OF TABLES 4 FIGURES 10 8 AUTHOR 9 GRANT AGENCY Anthony R. Russo City and County of Honolulu Richard E. Brock Department of Environmental Services 10 CONTRACT NUMBER C00983 11 DESCRIPTORS: wastewater outfall, fish, corals, monitoring, data collections, surveys IDENTIFIERS: coral reef fish communities, Pocillopora meandrina, Porites lobata, Bray–Curtis similarity index, Cochran’s Q-test, Waianae Ocean Outfall, Oahu, Hawaii 12 ABSTRACT (PURPOSE, METHOD, RESULTS, CONCLUSIONS) In 2004, coral growth and fish abundance were monitored at stations located at and in the vicinity of the Waianae Ocean Outfall. Fish abundance at diffuser station W-3 was 135 individuals representing 23 species. Station W-2, which was a control station in the past, was replaced by Station Z in 2003. This new station (Z), which is located inside the area of fish haven obstructions (artificial reef) controlled by the Hawaii Department of Land and Natural Resources (DLNR), is approximately 1.0 km southeast of the diffuser at a depth of 16 m. Station W-2 was replaced because of the dangerous deterioration of the sunken ship Mahi at this station. A total of 307 individuals were seen at Station Z, along both transects combined, with 24 species (195 individuals) at Transect 1 and 17 species (112 individuals) at Transect 2. -
Plate. Acetabularia Schenckii
Training in Tropical Taxonomy 9-23 July, 2008 Tropical Field Phycology Workshop Field Guide to Common Marine Algae of the Bocas del Toro Area Margarita Rosa Albis Salas David Wilson Freshwater Jesse Alden Anna Fricke Olga Maria Camacho Hadad Kevin Miklasz Rachel Collin Andrea Eugenia Planas Orellana Martha Cecilia Díaz Ruiz Jimena Samper Villareal Amy Driskell Liz Sargent Cindy Fernández García Thomas Sauvage Ryan Fikes Samantha Schmitt Suzanne Fredericq Brian Wysor From July 9th-23rd, 2008, 11 graduate and 2 undergraduate students representing 6 countries (Colombia, Costa Rica, El Salvador, Germany, France and the US) participated in a 15-day Marine Science Network-sponsored workshop on Tropical Field Phycology. The students and instructors (Drs. Brian Wysor, Roger Williams University; Wilson Freshwater, University of North Carolina at Wilmington; Suzanne Fredericq, University of Louisiana at Lafayette) worked synergistically with the Smithsonian Institution's DNA Barcode initiative. As part of the Bocas Research Station's Training in Tropical Taxonomy program, lecture material included discussions of the current taxonomy of marine macroalgae; an overview and recent assessment of the diagnostic vegetative and reproductive morphological characters that differentiate orders, families, genera and species; and applications of molecular tools to pertinent questions in systematics. Instructors and students collected multiple samples of over 200 algal species by SCUBA diving, snorkeling and intertidal surveys. As part of the training in tropical taxonomy, many of these samples were used by the students to create a guide to the common seaweeds of the Bocas del Toro region. Herbarium specimens will be contributed to the Bocas station's reference collection and the University of Panama Herbarium. -
Ecomorphology of Locomotion in Labrid Fishes
Environmental Biology of Fishes 65: 47–62, 2002. © 2002 Kluwer Academic Publishers. Printed in the Netherlands. Ecomorphology of locomotion in labrid fishes Peter C. Wainwrighta, David R. Bellwoodb & Mark W. Westneatc aSection of Evolution and Ecology, University of California, One Shields Avenue, Davis, CA 95616, U.S.A. (e-mail: [email protected]) bCentre for Coral Reef Biodiversity, Department of Marine Biology, James Cook University, Townsville, Queensland, Australia 4811 cDepartment of Zoology, Field Museum of Natural History, 1400 South Lakeshore Drive, Chicago, IL 60505, U.S.A. Received 16 May 2001 Accepted 17 January 2002 Key words: pectoral fin, aspect ratio, Labridae, allometry, convergent evolution, swimming speed Synopsis The Labridae is an ecologically diverse group of mostly reef associated marine fishes that swim primarily by oscillating their pectoral fins. To generate locomotor thrust, labrids employ the paired pectoral fins in motions that range from a fore-aft rowing stroke to a dorso-ventral flapping stroke. Species that emphasize one or the other behavior are expected to benefit from alternative fin shapes that maximize performance of their primary swimming behavior. We document the diversity of pectoral fin shape in 143 species of labrids from the Great Barrier Reef and the Caribbean. Pectoral fin aspect ratio ranged among species from 1.12 to 4.48 and showed a distribution with two peaks at about 2.0 and 3.0. Higher aspect ratio fins typically had a relatively long leading edge and were narrower distally. Body mass only explained 3% of the variation in fin aspect ratio in spite of four orders of magnitude range and an expectation that the advantages of high aspect ratio fins and flapping motion are greatest at large body sizes. -
Further Additions to the Fish Faunas of Lord Howe and Norfolk Islands, Southwest Pacific Ocean1
Pacific Science (1993), vol. 47, no. 2: 118-135 © 1993 by University of Hawaii Press. All rights reserved Further Additions to the Fish Faunas of Lord Howe and Norfolk Islands, Southwest Pacific Ocean1 3 MALCOLM P. FRANCIS2 AND JOHN E. RANDALL ABSTRACT: New fish records are reported from subtropical Lord Howe Island (34 species) and Norfolk Island (35 species). Most of the new records are based on few individuals ofwidespread tropical species. The new records increase the known coastalfish faunas to 433 species at Lord Howe Island and 254 at Norfolk Island. LORD HOWE ISLAND (31S S, 159 0 E) and (1993) provided a detailed discussion of the Norfolk Island (29 0 S, 168 0 E) are situated in hydrology of the Southwest Pacific. the subtropical Southwest Pacific Ocean (see Checklists of fishes from Lord Howe and Francis 1991, fig. I). Both islands are steep Norfolk islands have been published (Allen et and volcanic. A coral reef 6 km long fringes al. 1976, Hermes 1986), but there have been about 25% ofthe western side of Lord Howe significant recent additions to both faunas Island, protecting a shallow lagoon. Small (Francis 1991). Expeditions to both islands in patch and fringing reefs are present in some 1988-1992 made it obvious that the faunas other shallow sheltered sites, but much of the are still incompletely known. In this paper we rest of the coastline is rocky. Hermatypic report further additions to the fish faunas to corals are common, and 70 species have been provide a basis for their inclusion in a check recorded (Veron and Done 1979, Francis list of the fishes of Lord Howe, Norfolk, and 1993; J. -
Reef Fishes of the Phoenix Islands, Central Pacific Ocean
REEF FISHES OF THE PHOENIX ISLANDS, CENTRAL PACIFIC OCEAN BY GERALD ALLEN1 AND STEVEN BAILEY2 ABSTRACT Visual inventories and fish collections were conducted at the Phoenix Islands during June-July 2002. A list of fishes was compiled for 57 sites. The survey involved 163 hours of scuba diving to a maximum depth of 57 m. A total of 451 species were recorded, including 212 new records. The total known fish fauna of the Phoenix Islands now stands at 516 species. A formula for predicting the total reef fish fauna based on the number of species in six key indicator families indicates that at least 576 species can be expected to occur at this location. Wrasses (Labridae), groupers (Serranidae), gobies (Gobiidae), damselfishes (Pomacentridae), and surgeonfishes (Acanthuridae) were the most speciose families with 53, 40, 36, 36, and 32 species respectively. Species numbers at visually sampled sites during the survey ranged from 17 to 166, with an average of 110. Leeward outer reefs contained the highest diversity with an average of 135.5 species per site. Other major habitats included windward outer reefs (123.7 per site), passages (113.5), and lagoon reefs (38.5). The Napoleon Wrasse (Cheilinus undulatus) was extraordinarily abundant, providing excellent baseline information on the natural abundance of this species in the absence of fishing pressure. Conservation recommendations include protection of certain large predatory fishes including the Napoleon Wrasse, Bumphead Parrotfish, and reef sharks. INTRODUCTION The primary goal of the fish survey was to provide a comprehensive inventory of reef fishes inhabiting the Phoenix Islands. This segment of the fauna includes fishes living on or near coral reefs down to the limit of safe sport diving or approximately 55 m depth. -
Ecology of Mesophotic Macroalgae and Halimeda Kanaloana Meadows in the Main Hawaiian Islands
ECOLOGY OF MESOPHOTIC MACROALGAE AND HALIMEDA KANALOANA MEADOWS IN THE MAIN HAWAIIAN ISLANDS A DISSERTATION SUBMITTED TO THE GRADUATE DIVISION OF THE UNIVERSITY OF HAWAI‘I AT MĀNOA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN BOTANY (ECOLOGY, EVOLUTION AND CONSERVATION BIOLOGY) AUGUST 2012 By Heather L. Spalding Dissertation Committee: Celia M. Smith, Chairperson Michael S. Foster Peter S. Vroom Cynthia L. Hunter Francis J. Sansone i © Copyright by Heather Lee Spalding 2012 All Rights Reserved ii DEDICATION This dissertation is dedicated to the infamous First Lady of Limu, Dr. Isabella Aiona Abbott. She was my inspiration for coming to Hawai‘i, and part of what made this place special to me. She helped me appreciate the intricacies of algal cross-sectioning, discover tela arachnoidea, and understand the value of good company (and red wine, of course). iii ACKNOWLEDGEMENTS I came to Hawai‘i with the intention of doing a nice little intertidal project on macroalgae, but I ended up at the end of the photic zone. Oh, well. This dissertation would not have been possible without the support of many individuals, and I am grateful to each of them. My committee has been very patient with me, and I appreciate their constant encouragement, gracious nature, and good humor. My gratitude goes to Celia Smith, Frank Sansone, Peter Vroom, Michael Foster, and Cindy Hunter for their time and dedication. Dr. Isabella Abbott and Larry Bausch were not able to finish their tenure on my committee, and I thank them for their efforts and contributions.