(Cypridinacea) from the Philippine Islands
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Cytogenetic Studies on Marine Ostracods: the Karyotype of Giguntocypris Muellen' Skogsberg, 1920 (Ostracoda, Myodocopida)
J.micropalaeontol., 4 (2): 159-164, August 1985 Cytogenetic studies on marine ostracods: the karyotype of Giguntocypris muellen’ Skogsberg, 1920 (Ostracoda, Myodocopida) ALICIA MOGUILEVSKY Department of Geology, University College of Wales, Aberystwyth, Dyfed SY23 3DB, U.K. ABSTRACT -The chromosome complement of a bathypelagic myodocopid ostracod, Giganto- cypris muelleri Skogsberg, 1920, is described.The karyotype of this bisexual species consists of 2n = 18 (16A + XX) for the female and 2n = 17 (16A + XO) for the male. These chromosomes are all metacentric and of very similar size, ranging from 19pm to 24km. This is the first description of the karyotype of a marine ostracod. INTRODUCTION Whereas the majority of oceanic planktonic species Most taxonomic studies of Recent species have been release their eggs into the surrounding water, the females concerned solely with carapace and appendage morpho- of G. muelleri retain them in a brood chamber where logy. Although cytogenetic studies on ostracods were they develop before being released as free swimming made as early as 1898 (Woltereck), the knowledge of juveniles. Specimens of Gigantocypris rnuelleri were their karyotypes remains rudimentary. Woltereck (op. collected during cruises of RRS ‘Discovery’ in the N.E. cit.) and other early papers (Schleip, 1909; Schmalz, Atlantic, in June 1981 (Cruise 121, S.W. of Azores) by 1912; Muller-Cale, 1913; Bauer, 1934, 1940) were the author, and in August/September 1983 by Dr. C. mainly concerned with the study of gametogenesis and Ellis (Cruise 140, N.E. and S.E. of Azores). Full station spermatogenesis of freshwater cyprids (Podocopida). data can be obtained from the Cruise Reports (Angel et Although the chromosome complement of some of al., 1981; Herring et al., 1983). -
Midwater Data Sheet
MIDWATER TRAWL DATA SHEET RESEARCH VESSEL__________________________________(1/20/2013Version*) CLASS__________________;DATE_____________;NAME:_________________________; DEVICE DETAILS___________ LOCATION (OVERBOARD): LAT_______________________; LONG___________________________ LOCATION (AT DEPTH): LAT_______________________; LONG______________________________ LOCATION (START UP): LAT_______________________; LONG______________________________ LOCATION (ONBOARD): LAT_______________________; LONG______________________________ BOTTOM DEPTH_________; DEPTH OF SAMPLE:____________; DURATION OF TRAWL___________; TIME: IN_________AT DEPTH________START UP__________SURFACE_________ SHIP SPEED__________; WEATHER__________________; SEA STATE_________________; AIR TEMP______________ SURFACE TEMP__________; PHYS. OCE. NOTES______________________; NOTES_____________________________ INVERTEBRATES Lensia hostile_______________________ PHYLUM RADIOLARIA Lensia havock______________________ Family Tuscaroridae “Round yellow ones”___ Family Hippopodiidae Vogtia sp.___________________________ PHYLUM CTENOPHORA Family Prayidae Subfamily Nectopyramidinae Class Nuda "Pointed siphonophores"________________ Order Beroida Nectadamas sp._______________________ Family Beroidae Nectopyramis sp.______________________ Beroe abyssicola_____________________ Family Prayidae Beroe forskalii________________________ Subfamily Prayinae Beroe cucumis _______________________ Craseoa lathetica_____________________ Class Tentaculata Desmophyes annectens_________________ Subclass -
Using DNA Sequences to Investigate The
The Small Picture Approach to the Big Picture: Using DNA 13 Sequences to Investigate the Diversification of Animal Body Plans Lindell Bromham The Adaptive Radiation of the Metazoans The Metazoa (animal kingdom) is divided into approximately three dozen phyla (figure 13.1). The first undisputed fossils of around half of the animal phyla appear in the Cam- brian, the geological period that runs from around 543 million years ago (Myr) to 488 Myr. At least a third of animal phyla have no fossil record to speak of (Valentine 2004), but we can infer from phylogenetic relationships that many of these lineages must be at least Cam- brian in age. On the basis of this fossil evidence, it has been suggested that all of the major kinds of animals were generated in a period of around 10 to 15 million years (e.g., Carroll 2005; Levinton 2001; Valentine 2004). This inferred explosive radiation of animals in the Cambrian has been considered the signature of a phenomenal rise in diversity and com- plexity of animal life, and creating more complex ecosystems (e.g., Bambach, Bush, and Erwin 2007). An earlier Precambrian fauna, known as the ediacarans, were relatively simple, soft- bodied creatures (Xiao and Laflamme 2008). With the possible exception of Kimberella, which has been interpreted as having a muscular foot and scraping radula like a mollusc (Fedonkin and Waggoner 1997), none of the ediacarans show clear evidence of appendages specialized for locomotion, and there are relatively few complex trace fossils (marks made in the sediment) that would bear witness to directed bilaterian movement in the Precam- brian period (Jensen, Droser, and Gehling 2005). -
Feeding of a Pelagic Chaetognath, Sagitta Nagae ALVARINO in Suruga Bay, Central Japan*
Journal of the Oceanographical Society of Japan Vol.28, pp.181 to 186, October, 1972 Feeding of a Pelagic Chaetognath, Sagitta nagae ALVARINO in Suruga Bay, Central Japan* Sachiko NAGASAWA**and Ryuzo MARUMO** Abstract: The feeding of Sagitta nagae, the most predominant chaetognath species in Suruga Bay, was studied. Specimens were collected with ORI-100 net (1.0 mm in mesh aperture) and MTD net (0.35 mm in mesh aperture) and were fixed with neutralized formalin. The main food organisms of Sagitta nagae were the copepods, Candacia bipinnata, Calanus pacificus and Pareuchaeta russelli. The food-containing ratio (PIT, %) was higher at night and lower in the daytime. Here, P is the number of Sagitta containing food organisms in the gut and T is the total number of Sagitta examined. P/T was almost constant vertically in the upper 100 m layer. P/T was generally influenced neither by food density nor by the copepod numbers per Sagitta in this study. Sagitta nagae took food throughout life. Food ingested by Sagitta per day was calculated as 37.6 % of Sagitta in dry weight. 1. Introduction Suruga Bay is located about 35•‹N, 138.5•‹E in It has been frequently observed that chaetog- the central area of Honshu, Japan, along the naths feed on zooplankton such as copepods, Pacific coast. The biomass of chaetognaths is amphipods, euphausiids, medusae, siphono- second only to copepods among zooplankton in phores, chaetognaths, Tomopteris, tunicates Sagami Bay which is located near to Suruga and fish larvae (LEBOUR,1922, 1923; BIGELOW, Bay, the two bays having similar characters 1926; THOMSON,1947; SUAREZ-CAABRO,1955; of hydrography and plankton community MURAKAMI, 1957, 1959; ALVARINO, 1962). -
The Natural Resources of Monterey Bay National Marine Sanctuary
Marine Sanctuaries Conservation Series ONMS-13-05 The Natural Resources of Monterey Bay National Marine Sanctuary: A Focus on Federal Waters Final Report June 2013 U.S. Department of Commerce National Oceanic and Atmospheric Administration National Ocean Service Office of National Marine Sanctuaries June 2013 About the Marine Sanctuaries Conservation Series The National Oceanic and Atmospheric Administration’s National Ocean Service (NOS) administers the Office of National Marine Sanctuaries (ONMS). Its mission is to identify, designate, protect and manage the ecological, recreational, research, educational, historical, and aesthetic resources and qualities of nationally significant coastal and marine areas. The existing marine sanctuaries differ widely in their natural and historical resources and include nearshore and open ocean areas ranging in size from less than one to over 5,000 square miles. Protected habitats include rocky coasts, kelp forests, coral reefs, sea grass beds, estuarine habitats, hard and soft bottom habitats, segments of whale migration routes, and shipwrecks. Because of considerable differences in settings, resources, and threats, each marine sanctuary has a tailored management plan. Conservation, education, research, monitoring and enforcement programs vary accordingly. The integration of these programs is fundamental to marine protected area management. The Marine Sanctuaries Conservation Series reflects and supports this integration by providing a forum for publication and discussion of the complex issues currently facing the sanctuary system. Topics of published reports vary substantially and may include descriptions of educational programs, discussions on resource management issues, and results of scientific research and monitoring projects. The series facilitates integration of natural sciences, socioeconomic and cultural sciences, education, and policy development to accomplish the diverse needs of NOAA’s resource protection mandate. -
A Gigantic Marine Ostracod (Crustacea: Myodocopa) Trapped in Mid-Cretaceous Burmese Amber Received: 16 November 2017 Lida Xing 1,2, Benjamin Sames 3,4, Ryan C
www.nature.com/scientificreports OPEN A gigantic marine ostracod (Crustacea: Myodocopa) trapped in mid-Cretaceous Burmese amber Received: 16 November 2017 Lida Xing 1,2, Benjamin Sames 3,4, Ryan C. McKellar5,6, Dangpeng Xi1,2, Ming Bai7 & Accepted: 9 January 2018 Xiaoqiao Wan1,2 Published: xx xx xxxx The mid-Cretaceous Burmese amber (~99 Ma, Myanmar), widely known for exquisite preservation of theropods, also yields microfossils, which can provide important contextual information on paleoenvironment and amber formation. We report the frst Cretaceous ostracod in amber—the gigantic (12.9 mm) right valve of an exclusively marine group (Myodocopa: Myodocopida) preserved in Burmese amber. Ostracods are usually small (0.5–2 mm), with well-calcifed carapaces that provide an excellent fossil record extending to at least the Ordovician (~485 million years ago), but they are rarely encountered in amber. The new specimen efectively doubles the age of the ostracod amber record, ofering the frst representative of the Myodocopa, a weakly calcifed group with a poor fossil record. Its carapace morphology is atypical and likely plesiomorphic. The preserved valve appears to be either a moulted exuvium or a dead and disarticulated specimen, and subsequent resin fows contain forest foor inclusions with terrestrial arthropods, i.e., fragmentary remains of spiders, and insect frass. These features resolve an enigmatic taphonomic pathway, and support a marginal marine setting for resin production. Ostracods are aquatic microcrustaceans, with a calcareous, bivalved shell (carapace) that can enclose the whole body and all appendages. Few Mesozoic to Recent taxa exceed 3 mm in size and these are termed ‘gigantic’ ostra- cods, such as species of the living marine planktonic genus Gigantocypris (subclass Myodocopa, up to around 30 mm), or of the non-marine genus Megalocypris (subclass Podocopa, 5–8 mm in size). -
Metabolism of Antarctic Micronektonic Crustacea As a Function of Depth of Occurrence and Season
MARINE ECOLOGY PROGRESS SERIES Vol. 113: 207-219.1994 Published October 27 Mar. Ecol. Prog. Ser. Metabolism of Antarctic micronektonic Crustacea as a function of depth of occurrence and season J. J. Torres', A.V. ~arset~,J. Donnellyl, T. L. ~opkins',T. M. Lancraftl, D. G. Ainley3 'Dept of Marine Science, University of South Florida, 140 Seventh Ave. South, St. Petersburg, Florida 33701, USA 'Lilleveien 5, N-6006 hesund, Norway 3Point Reyes Bird Observatory, 4990 Shoreline Hwy, Stinson Beach, California 94970, USA ABSTRACT: Oxygen consun~ptionrates were determined on 21 species of crustaceans typical of the Southern Ocean micronektonic crustacean assemblage during spring (November),fall (March),and winter (June-August). Specimens were collected in the Scotia-Weddell Sea region in the vicinity of 60" S, 40" W in the upper 1000 m of the water column. Respiration (y, p1 O2 mg' wet mass h-') declined with depth of occurrence (X, m) according to the equation y = 0.125 x-~-~~~'~~~~(p < 0.05) despite the isothermal character of the water column, suggesting that lower metabolic rates are a temperature- independent adaptation to life in the deep sea. Three species of Crustacea showed a lowered meta- bolism during the winter season: the krill Euphausia superba and the 2 hyperiid amphipods Cyllopus lucasii and Vibilia stebbingi. Critical oxygen partial pressure (Pc) varied between 29 and 52 mm Hg, well below the lowest PO, found in the water column. It is suggested that the long nights of the Ant- arctic winter decrease the effectiveness of visual predation in the epipelagic zone, allowing lowered metabolic rates to be a viable overwintering strategy for some species. -
Transcriptome Phylogenies Support Ancient Evolutionary Transitions in Bioluminescence Traits of Cypridinid Ostracods
bioRxiv preprint doi: https://doi.org/10.1101/2021.09.03.458903; this version posted September 5, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. This article is a US Government work. It is not subject to copyright under 17 USC 105 and is also made available for use under a CC0 license. Transcriptome phylogenies support ancient evolutionary transitions in bioluminescence traits of cypridinid ostracods Authors: Emily A. Ellis1,2*, Jessica A. Goodheart1,3*, Nicholai M. Hensley1,4, Vanessa L. González5, Nicholas J. Reda6, Trevor J. Rivers7, James G. Morin8, Elizabeth Torres9, Gretchen A. Gerrish6,10, Todd H. Oakley1 * Equal authorship 1 Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, Santa Barbara, California 93106, USA 2 Current address: Illumina, California, USA 3 Current address: Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92037, USA 4 Current address: Department of Neurobiology and Behavior, Cornell University, Ithaca, New York 14850, USA 5 Global Genome Initiative, Smithsonian Institution, National Museum of Natural History, 10th and Constitution NW, Washington, DC 20560-0105, USA 6 Biology Department, University of Wisconsin–La Crosse, La Crosse, Wisconsin 54601, USA 7 Department of Ecology and Evolutionary Biology, University of Kansas 8 Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York 14850 9 Department of Biological Sciences, California State University Los Angeles 10 Current address: Trout Lake Station, Center for Limnology, University of Wisconsin - Madison 1 bioRxiv preprint doi: https://doi.org/10.1101/2021.09.03.458903; this version posted September 5, 2021. -
The Genome Sizes of Ostracod Crustaceans Correlate with Body Size and Phylogeny 2 3 Nicholas W
bioRxiv preprint doi: https://doi.org/10.1101/114660; this version posted March 7, 2017. 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 4.0 International license. 1 The genome sizes of ostracod crustaceans correlate with body size and phylogeny 2 3 Nicholas W. Jeffery1*, Emily A. Ellis2, Todd H. Oakley2, T. Ryan Gregory1 4 5 *Present address: Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, 6 Nova Scotia 7 8 1Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada. N1G 2W1 9 2University of California Santa Barbara, Santa Barbara, California, USA. 93106 10 11 Corresponding author email: [email protected] 12 13 14 Keywords: Ostracod, genome size, C-value, body size, phylogeny 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 bioRxiv preprint doi: https://doi.org/10.1101/114660; this version posted March 7, 2017. 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 4.0 International license. 46 Abstract 47 48 Within animals a positive correlation between genome size and body size has been detected in 49 several taxa but not in others, such that it remains unknown how pervasive this pattern may be. -
The Role of Trophic and Oceanographic Conditions in the Ecology of Deep-Sea Nematodes
The Role of Trophic and Oceanographic Conditions in the Ecology of Deep-Sea Nematodes by Katja Guilini The Role of Trophic and Oceanographic Conditions in the Ecology of Deep-Sea Nematodes ISBN 9789090265360 EAN 9789090265360 Cover design: Valerie Smets and Katja Guilini Lay-out: Valerie Smets and Katja Guilini Printed by: QualiCopy bvba, Maaltebruggestraat 169, 9000 Gent Marine Biology Research Group Campus Sterre - S8 Krijgslaan 281 B-9000 Gent Belgium Publically defended on December 6th, 2011 Chairman at the defense: Prof. Dr. Koen Sabbe For citation to published work reprinted in this thesis, please refer to the original publications. Guilini K (2011) The role of trophic and oceanographic conditions in the ecology of deep-sea nematodes. Ghent Uinversity (UGent), 307 pp. The research leading to this thesis received funding from the European Community’s Sixth Framework Program under the Hotspot Ecosystem Research on the Margins of European Seas project (HERMES, contract number GOCE-CT-2005-511234), from the European Community’s Seventh Framework Program under the Hotspot Ecosystem Research and Man’s Impact on European Seas project (HERMIONE, grant agreement number 226354), and from the Flanders Fund for Scientific Research (FWO, project number 3G0346) and Special Research Fund (BOF, the relation between function and biodiversity of Nematoda in the deep sea [FUNDEEP], project number 01J14909). The Role of Trophic and Oceanographic Conditions in the Ecology of Deep-Sea Nematodes De Rol van Trofische en Oceanografische Condities in de Ecologie van Diepzeenematoden by Katja Guilini Promotor: Prof. Dr. Ann Vanreusel Academic year 2011 - 2012 Thesis submitted in partial fulfillment of the requirements for the degree of Doctor in Science: Marine Sciences Members of the examination committee Members of the reading committee * Prof. -
Southern Indian Ocean Seamounts, Cruise Report
Final cruise report: Southern Indian Ocean Seamounts 2009 Cruise Report “Dr. Fridtjof Nansen” Southern Indian Ocean Seamounts (IUCN/ GEF/ UNDP/ ZSL/ ASCLME/ NERC/ EAF Nansen Project/ ECOMAR/ ACEP 2009 Cruise 410) 12th November – 19th December, 2009 By A.D. Rogers1, O. Alvheim2, E. Bemanaja3, D. Benivary4, P.H. Boersch-Supan1,5, T. Bornman6, R. Cedras7, N. Du Plessis8, S. Gotheil9, A. Hoines2, K. Kemp1, J. Kristiansen2, T. Letessier5, V. Mangar10, N. Mazungula6, T. Mørk2, P. Pinet11, J. Read12, T. Sonnekus6 1)Institute of Zoology, Zoological Society of London, Regent’s Park, London, NW1 4RY, United Kingdom. 2) Institute of Marine Research, P.O. Box 1870 Nordnes, 5817 Bergen, Norway. 3) IHSM Institut Halieutique et des Sciences Marines, Madagascar. 4) University of Tuléar, Madagascar. 5) Pelagic Ecology Research Group, Scottish Oceans Institute, University of St Andrews, Fife, KY16 8LB, United Kingdom. 6) South African Institute for Aquatic Biodiversity, Pbag 1015, Grahamstown 6140, South Africa. 7) University of the Western Cape, Dept. of Biodiversity & Conservation Biology, Private Bag X17, Bellville 7535, South Africa. 8) University of Cape Town, Department of Oceanography, Rondebosch 7701, Cape Town, South Africa. 9) International Union for Conservation of Nature (IUCN), Rue Mauvernay 28, 1196 Gland, Switzerland. 10) Albion Fisheries Research Centre, Mauritius. 11) ECOMAR Laboratory, Université de La Réunion, 15 avenue René Cassin, Saint Denis, 97715, France. 12) National Oceanography Centre, European Way, Southampton, SO14 3ZH, United Kingdom. 1 Final cruise report: Southern Indian Ocean Seamounts 2009 Contents 1.0 The South West Indian Ocean ........................................................................................................... 6 1.1 Regional fisheries management arrangements....................................................................................... 6 1.2 Fisheries for deep-sea species in the South West Indian Ocean ............................................................ -
STUDIES on ARTHROPODA Ii
STUDIES ON ARTHROPODA ii. BY DR. H.J. HANSEN WITH EIGHT COPPER-PLATES AT THE EXPENSE OF THE RASK-0RSTED FUND COPENHAGEN GYLDENDALSKE BOGHANDEL KJ0BENHAVN, LONDON, BERLIN 1925 COPENHAGEN PRINTED BY BIANCO LUNO Read}' from the Press February the 16. 1925. ON THE COMPARATIVE MORPHOLOGY OF THE APPENDAGES IN THE ARTHROPODA A. CRUSTACEA o CONTENTS Pag. Preface 7 Introduction Oi&Prineiples, Nomenclature, Methods, and literature g Sub-Class Brane poda .;.. 16 Order Notostraca 17 Order Anostraca 26 Order Conchostraca 28 Order Cladocera 30 Summary on the Sub-Class Branchiopoda 35 Sub-Class Copepoda 37 Order Uucopepoda '. - 37 Order Branchiura 44 .Sub-Class Cirripedia 48 Sub-Class Ostracoda 55 Sub-Class Trilobita : 78 Sub-Class Malacostraca 83 Series Leptostraca Order JSiebaliacea 89 Division Syncarida. Order Anaspidacea 97 Division Peracarida 104 Order Mysidacea . 106 Order Gumacea. 113 Order Tanaidacea 114 Order Isopoda 117 Order Amphipoda 122 Division Iiucarida 125 Order Buphausiacea 126 Order Decapoda . 129 Division Hoplocarida. Order Stomatopoda 145 Summary on the Sub-Class Malacostraca 151 Explanation of the Plates 158 PREFACE N 1893, thus more than thirty years ago, the present writer I published a preliminary communication: Zur Morphologic der Gliedrnassen und Mundtheile bei Crustaceen und lusecten.. Zoolog. Anzeiger Bd. XVI, pp. 193- -198 and 201—2r2, 1893. (Translated in Annals and Magaz. Nat.. Hist., 6.. Ser.., Vol.. XII, pp. 417—434. 1893). It was the results of investigations con ducted during several years, but frequently interrupted b3' more pressing undertakings. The paper contains no figures, and the text is divided into a number of paragraphs, shaped as abstracts or resumes.