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Appendicularia of CTAW
APPENDICULARIA APPENDICULARIA a b Fig. 26. Oikopleura albicans (Leuckart, 1854), a commonly occurring appendicularian species: a, dorsal view; b, lateral view. (Scale bar = 0.1 mm). [after T. Prentiss, reproduced with permission, from Alldredge 1976] Appendicularians are small free swimming planktonic tunicates, their bodies consisting of a short trunk and a tail (containing the notochord cells) which is present through the life of the individual. Glandular (oikoplast) epithelium on the trunk secretes the mucous house which encloses the whole or part of the body and contains the complex filters which strain food from the water driven through them (Deibel 1998; Flood & Deibel 1998). Unlike other tunicates, there is no peribranchial cavity and a pair of pharyngeal perforations (spiracles) surrounded by a ring of cilia open directly to the exterior from the floor of the pharynx. The early studies of these organisms, begun with Chamisso's description of Appendicularia flagellum Chamisso, 1821, were confounded by questions of its phylogenetic affinity. Chamisso classified his species with medusoids, Mertens (1830) with molluscs, and Quoy & Gaimard (1833) with zoophytes. Only in 1851 were appendicularians correctly assigned to the Tunicata by Huxley. At the time of this placement, the existence of more than one taxon was only just beginning to be recognised, and despite Huxley's work, they were not universally regarded as adult organisms—some authors still insisting that they were ascidian larvae or a free swimming generation of the sessile ascidians (Fenaux 1993). Subsequently, these questions were resolved by the work of Fol (1872) on material from the Straits of Messina, which forms the basis of later studies on the large collections of the great expeditions of the 19th century that revealed their true diversity in the oceanic plankton. -
Developmental Biology 448 (2019) 247–259
Developmental Biology 448 (2019) 247–259 Contents lists available at ScienceDirect Developmental Biology journal homepage: www.elsevier.com/locate/developmentalbiology Spermatogenesis as a tool for staging gonad development in the gonochoric MARK appendicularian Oikopleura dioica Fol 1872 Francesca Cima Laboratory of Ascidian Biology, Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35121 Padova, Italy ARTICLE INFO ABSTRACT Keywords: Oikopleura dioica, the only gonochoric species among appendicularians, has a spematozoon with a mid-piece Appendicularia and a conspicuous acrosome that, during fertilisation, undergoes a reaction forming an acrosomal process. To Gametogenesis provide more insight into the spermatogenesis of a holoplanktonic tunicate species that completes its life cycle Male gonad in three to five days, changes in the testis during individual growth have been examined. Spermatogenesis has Oikopleura dioica been subdivided into seven stages based on ultrastructural features during the formation and organisation of the Spermatogenesis male gonad and the relationships between its macroscopic anatomy and the events of sperm differentiation. Ultrastructure Gametes undergo highly synchronised differentiation due to the presence of widespread syncytial structures. Both meiosis and spermiogenesis are brief, and the passage from spermatocytes to spermatids involves a progressive segregation of the germ cells from the syncytial mass with the formation of large cytoplasmic bridges and volume reduction for nucleus compacting and cytoplasmic material changing. The nucleus is small and penetrated anteriorly by a complex acrosome and posteriorly by the distal centriole and part of the flagellum. In spermatids, the single, large mitochondrion appears laterally to the nucleus, and finally, in spermatozoa, it migrates into the mid-piece, wrapping the proximal portion of the axoneme. -
Redalyc.Checklist Da Classe Appendicularia (Chordata: Tunicata)
Biota Neotropica ISSN: 1676-0611 [email protected] Instituto Virtual da Biodiversidade Brasil Vega-Pérez, Luz Amelia; Gurgel de Campos, Meiri Aparecida; Schinke, Katya Patrícia Checklist da Classe Appendicularia (Chordata: Tunicata) do Estado de São Paulo, Brasil Biota Neotropica, vol. 11, núm. 1a, 2011, pp. 1-9 Instituto Virtual da Biodiversidade Campinas, Brasil Disponível em: http://www.redalyc.org/articulo.oa?id=199120113029 Como citar este artigo Número completo Sistema de Informação Científica Mais artigos Rede de Revistas Científicas da América Latina, Caribe , Espanha e Portugal Home da revista no Redalyc Projeto acadêmico sem fins lucrativos desenvolvido no âmbito da iniciativa Acesso Aberto Checklist da classe appendicularia (Chordata: Tunicata) do Estado de São Paulo, Brasil Vega-Pérez, L.M. et al. Biota Neotrop. 2011, 11(1a): 000-000. On line version of this paper is available from: http://www.biotaneotropica.org.br/v11n1a/en/abstract?inventory+bn0401101a2011 A versão on-line completa deste artigo está disponível em: http://www.biotaneotropica.org.br/v11n1a/pt/abstract?inventory+bn0401101a2011 Received/ Recebido em 23/07/2010 - Revised/ Versão reformulada recebida em 08/10/2010 - Accepted/ Publicado em 15/12/2010 ISSN 1676-0603 (on-line) Biota Neotropica is an electronic, peer-reviewed journal edited by the Program BIOTA/FAPESP: The Virtual Institute of Biodiversity. This journal’s aim is to disseminate the results of original research work, associated or not to the program, concerned with characterization, conservation and sustainable use of biodiversity within the Neotropical region. Biota Neotropica é uma revista do Programa BIOTA/FAPESP - O Instituto Virtual da Biodiversidade, que publica resultados de pesquisa original, vinculada ou não ao programa, que abordem a temática caracterização, conservação e uso sustentável da biodiversidade na região Neotropical. -
Redalyc.Keys for the Identification of Families and Genera of Atlantic
Biota Neotropica ISSN: 1676-0611 [email protected] Instituto Virtual da Biodiversidade Brasil Moreira da Rocha, Rosana; Bastos Zanata, Thais; Moreno, Tatiane Regina Keys for the identification of families and genera of Atlantic shallow water ascidians Biota Neotropica, vol. 12, núm. 1, enero-marzo, 2012, pp. 1-35 Instituto Virtual da Biodiversidade Campinas, Brasil Available in: http://www.redalyc.org/articulo.oa?id=199123750022 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Keys for the identification of families and genera of Atlantic shallow water ascidians Rocha, R.M. et al. Biota Neotrop. 2012, 12(1): 000-000. On line version of this paper is available from: http://www.biotaneotropica.org.br/v12n1/en/abstract?identification-key+bn01712012012 A versão on-line completa deste artigo está disponível em: http://www.biotaneotropica.org.br/v12n1/pt/abstract?identification-key+bn01712012012 Received/ Recebido em 16/07/2011 - Revised/ Versão reformulada recebida em 13/03/2012 - Accepted/ Publicado em 14/03/2012 ISSN 1676-0603 (on-line) Biota Neotropica is an electronic, peer-reviewed journal edited by the Program BIOTA/FAPESP: The Virtual Institute of Biodiversity. This journal’s aim is to disseminate the results of original research work, associated or not to the program, concerned with characterization, conservation and sustainable use of biodiversity within the Neotropical region. Biota Neotropica é uma revista do Programa BIOTA/FAPESP - O Instituto Virtual da Biodiversidade, que publica resultados de pesquisa original, vinculada ou não ao programa, que abordem a temática caracterização, conservação e uso sustentável da biodiversidade na região Neotropical. -
Bulletin 100, United States National Museum
ASCIDIANS FROM THE PHILIPPINES AND ADJACENT WATERS. By "Willard G. Van Name, Of the American Museum of Natural History, New York. INTRODUCTION. Although the ascidians of the Malay Archipelago have already been so much studied that it seems unlikely that many of the com- moner and more widely distributed species have escaped discovery, the Philippine Islands form one of the parts of that region that have been but little investigated as far as their ascidian fauna is con- cerned. As a whole the Malay region is remarkably rich in ascidians, both in variety of form and number of individuals, and some 200 species have been recorded from it, but among these supposed species there are undoubtedly many synonyms. Several important expedi- tions that have made collections in the Malay region, the United States Exploring Expedition, the Challenger Expedition, and the Siboga Expedition, extended their operations into the southern part of the Philippine group, and though as a result of their work a con- siderable number of species of ascidians have been described or recorded from Philippine waters, the localities investigated were too few and too near together, and the amount of material too small to give anything approaching a complete view of the ascidian fauna. The collection made by the Albatross Expedition affords for the first time an opportunity for a general and comprehensive study of the ascidians of the Philippines and their vicinity. That the collec- tion falls very far short of containing all the species found there is very evident. Many forms obtained by other expeditions are not contained in it, and much more extensive collecting in the northern part of the group would have been desirable. -
Catalogue of Tunicata in Australian Waters
CATALOGUE OF TUNICATA IN AUSTRALIAN WATERS P. Kott Queensland Museum Brisbane, Australia 1 The Australian Biological Resources Study is a program of the Department of the Environment and Heritage, Australia. © Commonwealth of Australia 2005 This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without written permission from the Australian Biological Resources Study, Environment Australia. Requests and inquiries concerning reproduction and rights should be addressed to the Director, Australian Biological Resources Study, GPO Box 787, Canberra, ACT 2601, Australia. National Library of Australia Cataloguing-in-Publication entry Kott, P. Catalogue of Tunicata in Australian waters. Bibliography. Includes index. ISBN 0 642 56842 1 [ISBN 978-0-642-56842-7]. 1. Tunicata - Australia. I. Australian Biological Resources Study. II. Title. 596.20994 In this work, Nomenclatural Acts are published within the meaning of the International Code of Zoological Nomenclature by the lodgement of a CD Rom in the following major publicly accessible libraries: The Australian Museum Library, Sydney The National Library of Australia, Canberra The Natural History Museum Library, London The Queensland Museum Library, Brisbane The United States National Museum of Natural History, Smithsonian Institution, Washington DC The University of Queensland Library, Brisbane The Zoologische Museum Library, University of Amsterdam [International Commission for Zoological Nomenclature (1999). International Code of Zoological Nomenclature 4th ed: 1–126 (Article 8.6)] This CD is available from: Australian Biological Resources Study PO Box Tel:(02) 6250 9435 Int: +(61 2) 6250 9435 Canberra, ACT 2601 Fax:(02) 6250 9555 Int: +(61 2) 6250 9555 Australia Email:[email protected] ii CONTENTS Preface . -
Title the Ascidians of the Japan Sea. I Author(S) Nishikawa, Teruaki
Title The Ascidians of the Japan Sea. I Author(s) Nishikawa, Teruaki PUBLICATIONS OF THE SETO MARINE BIOLOGICAL Citation LABORATORY (1990), 34(4-6): 73-148 Issue Date 1990-08-31 URL http://hdl.handle.net/2433/176169 Right Type Departmental Bulletin Paper Textversion publisher Kyoto University The Ascidians of the Japan Sea. I 1l By Teruaki Nishikawa Biological Laboratory, College of General Education, Nagoya University, Chikusa-ku, Nagoya 464-01, Japan With Text-figures 1-9 and Tables 1-4 Abstract The ascidian fauna in the Japan Sea was studied by examination of new material mainly from littoral areas and the type or other available specimens and by a literature survey of previous records. A total of 163 species, including infraspecific taxa, belonging to 50 genera of 14 families were recorded from this sea. Included are descriptions of five new species, proposal of a new replace ment name and many taxonomic amendments. The fauna thus understood has been analyzed zoogeographically mainly in terms of biogeographic elements. Consideration of the results supports in many respects the previous knowledge about the biotic peculiarities of the sea, but also gives some new findings. The Japan Sea is a marginal sea of the Pacific Ocean. It is separated nearly wholly from the ocean and maintains the in- and outflows of water mainly through the Straits of Korea (=Chosen), Tsugaru and Soya, scarcely through those of Ma miya ( =Tatarskiy) and Tsushima. In this paper the Japan Sea area is to include these five straits and Mutsu Bay and Cheju ( =Quelpart, Saishu) Island. The Japan Sea has been arousing interests in biogeography and offering the subject of debate about the origin and formation of the marine fauna. -
Distribution and Abundance of Larvaceans in the Southern Ocean
Distribution and abundance of Larvaceans in the Southern Ocean By Margaret Caroline Murray LINDSAY BSc. (Env. Mang. & Eco) Hons. GCAS Submitted in fulfilment of the requirements for the Degree of Doctor of Philosophy University of Tasmania June 2012 _________________________ _______ _____ _ Declaration of originality______________________ This thesis contains no material which has been accepted for a degree or diploma by the University or any other institution, except by way of background information and duly acknowledged in the thesis, and to the best of my knowledge and belief no material previously published or written by another person except where due acknowledgement is made in the text of the thesis, nor does the thesis contain any material that infringes copyright. Margaret CM Lindsay June 2012 ___ ____________________________ ______ _____ Statement of authority of access___ _____________ This thesis may be made available for loan and limited copying in accordance with the Copyright Act 1968. Margaret CM Lindsay June 2012 _______________________________ _ ________ _ Statement regarding published work contained in the thesis___ __ _______ ___ The publishers of the papers comprising Chapter 5 hold the copyright for that content, and access to the material should be sought from the respective journals. The remaining non published content of the thesis may be available for loan and limited copying in accordance with the Copyright Act 1968. Margaret CM Lindsay June 2012 ii _______________________________ _ _________ Statement of co-authorship____ ___ ___________ The following people and institutions contributed to the publication of the work undertaken as part of this thesis: Chapter 5: Distribution and abundance of Larvaceans in the Southern Ocean between 30° and 80°E. -
Species-Specific House Productivity of Appendicularians
MARINE ECOLOGY PROGRESS SERIES Vol. 259: 163–172, 2003 Published September 12 Mar Ecol Prog Ser Species-specific house productivity of appendicularians Riki Sato1, 2,*, Yuji Tanaka1, Takashi Ishimaru1 1Department of Ocean Sciences, Tokyo University of Fisheries, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan 2Present address: Louisiana Universities Marine Consortium, 8124 Highway 56, Chauvin, Louisiana 70344, USA ABSTRACT: Appendicularians, pelagic tunicates that are common in world oceans, periodically pro- duce new mucus houses and discard old ones. Discarded houses form macroscopic aggregates that constitute sites of biological activity in the water column and also contribute to the transport of organic matter to deeper water. In this study, we measured the house renewal rates of 10 appendic- ularian species cultivated in 30 µm-mesh-screened seawater at 17 to 29°C. In addition, the carbon content of the tunicates (CB), their newly secreted houses (CNH) and their discarded houses (CDH) were concurrently examined for some of the oikopleurid species. House renewal rates varied from 2 houses d–1 for Oikopleura cophocerca at 20°C to 40 houses d–1 for Fritillaria formica digitata at 23°C. The CNH of O. longicauda, O. fusiformis, O. rufescens and Megalocercus huxleyi were 0.16, 0.48, 1.6 and 8.8 µg, corresponding to 5.3, 9.2, 14.1 and 10.3% of CB, respectively; the CDH of the first 3 species were 0.68, 1.2 and 3.9 µg, corresponding to 17.9, 30.0 and 32.8% of CB, respectively (CDH was not measured in M. huxleyi). -
MARION-DUFRESNE ” (CAMPAGNE JASUS, RÉUNION ET BRÉSIL) C Monniot
QUELQUES ASCIDIES RÉCOLTÉES PAR LE M.S. “ MARION-DUFRESNE ” (CAMPAGNE JASUS, RÉUNION ET BRÉSIL) C Monniot To cite this version: C Monniot. QUELQUES ASCIDIES RÉCOLTÉES PAR LE M.S. “ MARION-DUFRESNE ” (CAMPAGNE JASUS, RÉUNION ET BRÉSIL). Vie et Milieu / Life & Environment, Observatoire Océanologique - Laboratoire Arago, 1994, pp.229-242. hal-03048012 HAL Id: hal-03048012 https://hal.sorbonne-universite.fr/hal-03048012 Submitted on 9 Dec 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, 1994, 44 (3/4) : 229-242 QUELQUES ASCIDIES RÉCOLTÉES PAR LE M.S. « MARION-DUFRESNE » (CAMPAGNE JASUS, RÉUNION ET BRÉSIL) Some ascidians collected with the M.S. « Marion-Dufresne » (Jasus, Reunion and Brazil cruises) C. MONNIOT CNRS D 0699, Muséum national d'Histoire naturelle, Laboratoire de Biologie des Invertébrés marins et Malacologie, 55 rue Buffon, 75005 Paris, France SYSTEMATIQUE RÉSUMÉ - Au cours de différentes campagnes de biologie, le «Marion-Dufresne» TUNICIERS a récolté quelques exemplaires d'Ascidies, la plupart en zone profonde, et quel- GRANDS FONDS ques-unes sur des fonds sédimentaires autour de l'île de la Réunion. Trois espèces OCÉAN INDIEN ATLANTIQUE SUD-OUEST nouvelles pour la Science sont décrites (deux de l'île de la Réunion et une de la pente brésilienne). -
Catalogue of Tunicata in Australian Waters
CATALOGUE OF TUNICATA IN AUSTRALIAN WATERS P. Kott Queensland Museum Brisbane, Australia 1 The Australian Biological Resources Study is a program of the Department of the Environment and Heritage, Australia. © Commonwealth of Australia 2005 This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without written permission from the Australian Biological Resources Study, Environment Australia. Requests and inquiries concerning reproduction and rights should be addressed to the Director, Australian Biological Resources Study, GPO Box 787, Canberra, ACT 2601, Australia. National Library of Australia Cataloguing-in-Publication entry Kott, P. Catalogue of Tunicata in Australian waters. Bibliography. Includes index. ISBN 0 642 56842 1 [ISBN 978-0-642-56842-7]. 1. Tunicata - Australia. I. Australian Biological Resources Study. II. Title. 596.20994 In this work, Nomenclatural Acts are published within the meaning of the International Code of Zoological Nomenclature by the lodgement of a CD Rom in the following major publicly accessible libraries: The Australian Museum Library, Sydney The National Library of Australia, Canberra The Natural History Museum Library, London The Queensland Museum Library, Brisbane The United States National Museum of Natural History, Smithsonian Institution, Washington DC The University of Queensland Library, Brisbane The Zoologische Museum Library, University of Amsterdam [International Commission for Zoological Nomenclature (1999). International Code of Zoological Nomenclature 4th ed: 1–126 (Article 8.6)] This CD is available from: Australian Biological Resources Study PO Box Tel:(02) 6250 9435 Int: +(61 2) 6250 9435 Canberra, ACT 2601 Fax:(02) 6250 9555 Int: +(61 2) 6250 9555 Australia Email:[email protected] ii CONTENTS Preface . -
Dinâmica Populacional De Appendicularia E Cladocera Na Plataforma Interna De Ubatuba (SP): Um Estudo Sazonal E Multianual
Leonardo Kenji Miyashita Dinâmica populacional de Appendicularia e Cladocera na plataforma interna de Ubatuba (SP): um estudo sazonal e multianual Dissertação apresentada ao Instituto Oceanográfico da Universidade de São Paulo, como parte dos requisitos para a obtenção do Título de Mestre em Ciências, área de Oceanografia Biológica. Orientador: Prof. Dr. Rubens Mendes Lopes São Paulo 2010 Universidade de São Paulo Instituto Oceanográfico Dinâmica populacional de Appendicularia e Cladocera na plataforma interna de Ubatuba (SP): um estudo sazonal e multianual Leonardo Kenji Miyashita Dissertação apresentada ao Instituto Oceanográfico da Universidade de São Paulo, como parte dos requisitos para obtenção do título de Mestre em Ciências, área de Oceanografia Biológica. Julgada em ____/____/____ por _____________________________________ _______________ Prof(a). Dr(a). Conceito _____________________________________ _______________ Prof(a). Dr(a). Conceito _____________________________________ _______________ Prof(a). Dr(a). Conceito i Agradecimentos Primeiramente gostaria de agradecer a Fapesp (processo nº 2007/56931-1) pela bolsa concedida, sem a qual não seria possível a realização deste trabalho. A bolsa também possibilitou minha participação no VIII International Symposium on Cladocera, uma experiência bastante positiva, pois tive a oportunidade de apresentar uma parte deste trabalho, de assistir ótimas palestras e de conhecer pesquisadores renomados. Sou extremamente grato ao meu orientador, prof. Dr. Rubens M. Lopes, pela excelente orientação e todos os ensinamentos passados, além de me proporcionar um ótimo ambiente de trabalho, onde sempre tive tudo que precisei para realizar minha pesquisa com tranquilidade. Ao prof. Dr. Salvador A. Gaeta por possibilitar a participação no projeto Antares, pela disponibilização dos dados de clorofila a e pela realização dos “jantares”.