International Conference on Pelagic Biogeography; Pelagic
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Diversity and Community Structure of Pelagic Cnidarians in the Celebes and Sulu Seas, Southeast Asian Tropical Marginal Seas
Deep-Sea Research I 100 (2015) 54–63 Contents lists available at ScienceDirect Deep-Sea Research I journal homepage: www.elsevier.com/locate/dsri Diversity and community structure of pelagic cnidarians in the Celebes and Sulu Seas, southeast Asian tropical marginal seas Mary M. Grossmann a,n, Jun Nishikawa b, Dhugal J. Lindsay c a Okinawa Institute of Science and Technology Graduate University (OIST), Tancha 1919-1, Onna-son, Okinawa 904-0495, Japan b Tokai University, 3-20-1, Orido, Shimizu, Shizuoka 424-8610, Japan c Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka 237-0061, Japan article info abstract Article history: The Sulu Sea is a semi-isolated, marginal basin surrounded by high sills that greatly reduce water inflow Received 13 September 2014 at mesopelagic depths. For this reason, the entire water column below 400 m is stable and homogeneous Received in revised form with respect to salinity (ca. 34.00) and temperature (ca. 10 1C). The neighbouring Celebes Sea is more 19 January 2015 open, and highly influenced by Pacific waters at comparable depths. The abundance, diversity, and Accepted 1 February 2015 community structure of pelagic cnidarians was investigated in both seas in February 2000. Cnidarian Available online 19 February 2015 abundance was similar in both sampling locations, but species diversity was lower in the Sulu Sea, Keywords: especially at mesopelagic depths. At the surface, the cnidarian community was similar in both Tropical marginal seas, but, at depth, community structure was dependent first on sampling location Marginal sea and then on depth within each Sea. Cnidarians showed different patterns of dominance at the two Sill sampling locations, with Sulu Sea communities often dominated by species that are rare elsewhere in Pelagic cnidarians fi Community structure the Indo-Paci c. -
Life Cycle and Early Development of the Thecosomatous Pteropod Limacina Retroversa in the Gulf of Maine, Including the Effect of Elevated CO2 Levels
Life cycle and early development of the thecosomatous pteropod Limacina retroversa in the Gulf of Maine, including the effect of elevated CO2 levels Ali A. Thabetab, Amy E. Maasac*, Gareth L. Lawsona and Ann M. Tarranta a. Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543 b. Zoology Dept., Faculty of Science, Al-Azhar University in Assiut, Assiut, Egypt. c. Bermuda Institute of Ocean Sciences, St. George’s GE01, Bermuda *Corresponding Author, equal contribution with lead author Email: [email protected] Phone: 441-297-1880 x131 Keywords: mollusc, ocean acidification, calcification, mortality, developmental delay Abstract Thecosome pteropods are pelagic molluscs with aragonitic shells. They are considered to be especially vulnerable among plankton to ocean acidification (OA), but to recognize changes due to anthropogenic forcing a baseline understanding of their life history is needed. In the present study, adult Limacina retroversa were collected on five cruises from multiple sites in the Gulf of Maine (between 42° 22.1’–42° 0.0’ N and 69° 42.6’–70° 15.4’ W; water depths of ca. 45–260 m) from October 2013−November 2014. They were maintained in the laboratory under continuous light at 8° C. There was evidence of year-round reproduction and an individual life span in the laboratory of 6 months. Eggs laid in captivity were observed throughout development. Hatching occurred after 3 days, the veliger stage was reached after 6−7 days, and metamorphosis to the juvenile stage was after ~ 1 month. Reproductive individuals were first observed after 3 months. Calcein staining of embryos revealed calcium storage beginning in the late gastrula stage. -
The Evolution of Siphonophore Tentilla for Specialized Prey Capture in the Open Ocean
The evolution of siphonophore tentilla for specialized prey capture in the open ocean Alejandro Damian-Serranoa,1, Steven H. D. Haddockb,c, and Casey W. Dunna aDepartment of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520; bResearch Division, Monterey Bay Aquarium Research Institute, Moss Landing, CA 95039; and cEcology and Evolutionary Biology, University of California, Santa Cruz, CA 95064 Edited by Jeremy B. C. Jackson, American Museum of Natural History, New York, NY, and approved December 11, 2020 (received for review April 7, 2020) Predator specialization has often been considered an evolutionary makes them an ideal system to study the relationships between “dead end” due to the constraints associated with the evolution of functional traits and prey specialization. Like a head of coral, a si- morphological and functional optimizations throughout the organ- phonophore is a colony bearing many feeding polyps (Fig. 1). Each ism. However, in some predators, these changes are localized in sep- feeding polyp has a single tentacle, which branches into a series of arate structures dedicated to prey capture. One of the most extreme tentilla. Like other cnidarians, siphonophores capture prey with cases of this modularity can be observed in siphonophores, a clade of nematocysts, harpoon-like stinging capsules borne within special- pelagic colonial cnidarians that use tentilla (tentacle side branches ized cells known as cnidocytes. Unlike the prey-capture apparatus of armed with nematocysts) exclusively for prey capture. Here we study most other cnidarians, siphonophore tentacles carry their cnidocytes how siphonophore specialists and generalists evolve, and what mor- in extremely complex and organized batteries (3), which are located phological changes are associated with these transitions. -
A Draft Genome and Target Capture Probes for Limacina Bulimoides, Tested for Cross-Species Relevance Le Qin Choo1,2*† , Thijs M
Choo et al. BMC Genomics (2020) 21:11 https://doi.org/10.1186/s12864-019-6372-z RESEARCH ARTICLE Open Access Novel genomic resources for shelled pteropods: a draft genome and target capture probes for Limacina bulimoides, tested for cross-species relevance Le Qin Choo1,2*† , Thijs M. P. Bal3†, Marvin Choquet3, Irina Smolina3, Paula Ramos-Silva1, Ferdinand Marlétaz4, Martina Kopp3, Galice Hoarau3 and Katja T. C. A. Peijnenburg1,2* Abstract Background: Pteropods are planktonic gastropods that are considered as bio-indicators to monitor impacts of ocean acidification on marine ecosystems. In order to gain insight into their adaptive potential to future environmental changes, it is critical to use adequate molecular tools to delimit species and population boundaries and to assess their genetic connectivity. We developed a set of target capture probes to investigate genetic variation across their large-sized genome using a population genomics approach. Target capture is less limited by DNA amount and quality than other genome-reduced representation protocols, and has the potential for application on closely related species based on probes designed from one species. Results: We generated the first draft genome of a pteropod, Limacina bulimoides, resulting in a fragmented assembly of 2.9 Gbp. Using this assembly and a transcriptome as a reference, we designed a set of 2899 genome- wide target capture probes for L. bulimoides. The set of probes includes 2812 single copy nuclear targets, the 28S rDNA sequence, ten mitochondrial genes, 35 candidate biomineralisation genes, and 41 non-coding regions. The capture reaction performed with these probes was highly efficient with 97% of the targets recovered on the focal species. -
An Overview of the Fossil Record of Pteropoda (Mollusca, Gastropoda, Heterobranchia)
Cainozoic Research, 17(1), pp. 3-10 June 2017 3 An overview of the fossil record of Pteropoda (Mollusca, Gastropoda, Heterobranchia) Arie W. Janssen1 & Katja T.C.A. Peijnenburg2, 3 1 Naturalis Biodiversity Center, Marine Biodiversity, Fossil Mollusca, P.O. Box 9517, 2300 RA Leiden, The Nether lands; [email protected] 2 Naturalis Biodiversity Center, Marine Biodiversity, P.O. Box 9517, 2300 RA Leiden, The Netherlands; Katja.Peijnen [email protected] 3 Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, P.O. Box 94248, 1090 GE Am sterdam, The Netherlands. Manuscript received 23 January 2017, revised version accepted 14 March 2017 Based on the literature and on a massive collection of material, the fossil record of the Pteropoda, an important group of heterobranch marine, holoplanktic gastropods occurring from the late Cretaceous onwards, is broadly outlined. The vertical distribution of genera is illustrated in a range chart. KEY WORDS: Pteropoda, Euthecosomata, Pseudothecosomata, Gymnosomata, fossil record Introduction Thecosomata Mesozoic Much current research focusses on holoplanktic gastro- pods, in particular on the shelled pteropods since they The sister group of pteropods is now considered to belong are proposed as potential bioindicators of the effects of to Anaspidea, a group of heterobranch gastropods, based ocean acidification e.g.( Bednaršek et al., 2016). This on molecular evidence (Klussmann-Kolb & Dinapoli, has also led to increased interest in delimiting spe- 2006; Zapata et al., 2014). The first known species of cies boundaries and distribution patterns of pteropods pteropods in the fossil record belong to the Limacinidae, (e.g. Maas et al., 2013; Burridge et al., 2015; 2016a) and are characterised by sinistrally coiled, aragonitic and resolving their evolutionary history using molecu- shells. -
Downloaded from Genbank (Table S1)
water Article Integrated Taxonomy for Halistemma Species from the Northwest Pacific Ocean Nayeon Park 1 , Andrey A. Prudkovsky 2,* and Wonchoel Lee 1,* 1 Department of Life Science, Hanyang University, Seoul 04763, Korea; [email protected] 2 Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia * Correspondence: [email protected] (A.A.P.); [email protected] (W.L.) Received: 16 October 2020; Accepted: 20 November 2020; Published: 22 November 2020 Abstract: During a survey of the siphonophore community in the Kuroshio Extension, Northwest Pacific Ocean, a new Halistemma Huxley, 1859 was described using integrated molecular and morphological approaches. The Halistemma isabu sp. nov. nectophore is most closely related morphologically to H. striata Totton, 1965 and H. maculatum Pugh and Baxter, 2014. These species can be differentiated by their nectosac shape, thrust block size, ectodermal cell patches and ridge patterns. The new species’ bracts are divided into two distinct types according to the number of teeth. Type A bracts are more closely related to ventral bracts in H. foliacea (Quoy and Gaimard, 1833) while Type B bracts are more similar to H. rubrum (Vogt, 1852). Each type differs, however, from the proximal end shape, distal process and bracteal canal. Both of the new species’ morphological type and phylogenetic position within the genus Halistemma are supported by phylogenetic analysis of concatenated DNA dataset (mtCOI, 16S rRNA and 18S rRNA). Integrated morphological and molecular approaches to the taxonomy of siphonophores showed a clear delimitation of the new species from the congeners. Halistemma isabu sp. nov. is distributed with the congeners H. -
CNIDARIA Corals, Medusae, Hydroids, Myxozoans
FOUR Phylum CNIDARIA corals, medusae, hydroids, myxozoans STEPHEN D. CAIRNS, LISA-ANN GERSHWIN, FRED J. BROOK, PHILIP PUGH, ELLIOT W. Dawson, OscaR OcaÑA V., WILLEM VERvooRT, GARY WILLIAMS, JEANETTE E. Watson, DENNIS M. OPREsko, PETER SCHUCHERT, P. MICHAEL HINE, DENNIS P. GORDON, HAMISH J. CAMPBELL, ANTHONY J. WRIGHT, JUAN A. SÁNCHEZ, DAPHNE G. FAUTIN his ancient phylum of mostly marine organisms is best known for its contribution to geomorphological features, forming thousands of square Tkilometres of coral reefs in warm tropical waters. Their fossil remains contribute to some limestones. Cnidarians are also significant components of the plankton, where large medusae – popularly called jellyfish – and colonial forms like Portuguese man-of-war and stringy siphonophores prey on other organisms including small fish. Some of these species are justly feared by humans for their stings, which in some cases can be fatal. Certainly, most New Zealanders will have encountered cnidarians when rambling along beaches and fossicking in rock pools where sea anemones and diminutive bushy hydroids abound. In New Zealand’s fiords and in deeper water on seamounts, black corals and branching gorgonians can form veritable trees five metres high or more. In contrast, inland inhabitants of continental landmasses who have never, or rarely, seen an ocean or visited a seashore can hardly be impressed with the Cnidaria as a phylum – freshwater cnidarians are relatively few, restricted to tiny hydras, the branching hydroid Cordylophora, and rare medusae. Worldwide, there are about 10,000 described species, with perhaps half as many again undescribed. All cnidarians have nettle cells known as nematocysts (or cnidae – from the Greek, knide, a nettle), extraordinarily complex structures that are effectively invaginated coiled tubes within a cell. -
An Annotated Checklist of the Marine Macroinvertebrates of Alaska David T
NOAA Professional Paper NMFS 19 An annotated checklist of the marine macroinvertebrates of Alaska David T. Drumm • Katherine P. Maslenikov Robert Van Syoc • James W. Orr • Robert R. Lauth Duane E. Stevenson • Theodore W. Pietsch November 2016 U.S. Department of Commerce NOAA Professional Penny Pritzker Secretary of Commerce National Oceanic Papers NMFS and Atmospheric Administration Kathryn D. Sullivan Scientific Editor* Administrator Richard Langton National Marine National Marine Fisheries Service Fisheries Service Northeast Fisheries Science Center Maine Field Station Eileen Sobeck 17 Godfrey Drive, Suite 1 Assistant Administrator Orono, Maine 04473 for Fisheries Associate Editor Kathryn Dennis National Marine Fisheries Service Office of Science and Technology Economics and Social Analysis Division 1845 Wasp Blvd., Bldg. 178 Honolulu, Hawaii 96818 Managing Editor Shelley Arenas National Marine Fisheries Service Scientific Publications Office 7600 Sand Point Way NE Seattle, Washington 98115 Editorial Committee Ann C. Matarese National Marine Fisheries Service James W. Orr National Marine Fisheries Service The NOAA Professional Paper NMFS (ISSN 1931-4590) series is pub- lished by the Scientific Publications Of- *Bruce Mundy (PIFSC) was Scientific Editor during the fice, National Marine Fisheries Service, scientific editing and preparation of this report. NOAA, 7600 Sand Point Way NE, Seattle, WA 98115. The Secretary of Commerce has The NOAA Professional Paper NMFS series carries peer-reviewed, lengthy original determined that the publication of research reports, taxonomic keys, species synopses, flora and fauna studies, and data- this series is necessary in the transac- intensive reports on investigations in fishery science, engineering, and economics. tion of the public business required by law of this Department. -
Shells of Maine: a Catalogue of the Land, Fresh-Water and Marine Mollusca of Maine
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by University of Maine The University of Maine DigitalCommons@UMaine Maine History Documents Special Collections 1908 Shells of Maine: a Catalogue of the Land, Fresh-water and Marine Mollusca of Maine Norman Wallace Lermond Follow this and additional works at: https://digitalcommons.library.umaine.edu/mainehistory Part of the History Commons This Monograph is brought to you for free and open access by DigitalCommons@UMaine. It has been accepted for inclusion in Maine History Documents by an authorized administrator of DigitalCommons@UMaine. For more information, please contact [email protected]. Pamp 353 c. 2 Vickery SHELLS OF MAINE Norman Wallace Lermond Thomaston SHELLS OF MAINE. A Catalogue of the Land, Fresh-water and Marine Mollusca of Maine, by Norman Wallace Lermond. INTRODUCTORY. No general list of Maine shells—including land, fresh-water and marine species—-has been published since 1843, when Dr. J. W. Mighels’ list was printed in the Boston Journal of Natural History. Dr. Mighels may be called the “Pioneer” conchologist of Maine. By profession a physician, in his leisure hours he was a most enthusiastic collector and student of all forms of molluscan life. Enthusiasm such as his was “contagious” and he soon had gathered about him a little band of active students and collectors. Of these Capt. Walden of the U. S. Revenue Cutter “Morris” was dredging in deep water and exploring the eastern shores and among the islands, and “by his zeal procured many rare species;” Dr. -
Zooplankton Distribution in Coastal Water of the North-Western Bay of Bengal, Off Rushikulya Estuary, East Coast of India
Indian Journal of Geo-Marine Sciences Vol. 44(4), April 2015, pp. 546-561 Zooplankton distribution in coastal water of the North-Western Bay of Bengal, off Rushikulya estuary, east coast of India *S. Srichandan, Biraja K. Sahu, R. Panda, S. K. Baliarsingh#, K. C. Sahu & R. C. Panigrahy Department of Marine Sciences, Berhampur University, Berhampur-760007, Odisha, India #(Present address) Indian National Centre for Ocean Information Services, Hyderabad-500090, India *[E-mail: [email protected]] Received 17 September 2013; revised 6 June 2014 Abstract In total, 186 species of holoplankton and 23 different types of meroplankton were encountered during this study. Zooplankton community was dominated by copepods represented by 112 species, belonging to 4 orders and 26 families. Calanoida emerged as the most dominant order among the copepods being comprised of 68 species. It was followed by poicilostomatoids with 26 species, cyclopoids with 10 species and harpacticoida with 8 species. Paracalanus aculeatus emerged as the most dominant species during pre-monsoon season while, Acrocalanus longicornis was dominant in monsoon and A. gibber in the post-monsoon season. Other dominant copepods were Oithona sp., Miracia efferata, Acartia southwelli, Centropages tenuiremis, Paracalanus parvus, Acrocalanus gracilis and Acartia erythraea. Average zooplankton density ranged from 2387 org./10m3 to 11659 org./10m3. Zooplankton volume ranged from 0.65 ml/10m3 in monsoon to 1.51 ml/10m3 in post- monsoon season. Despite high species abundance during premonsoon period, species diversity was maximum in monsoon. Species richness and dominance indices remained higher during post-monsoon whereas Pielou’s evenness (J’) was more in monsoon. -
Winners and Losers in a Changing Ocean: Impact on the Physiology and Life History of Pteropods in the Scotia Sea; Southern Ocean
Winners and losers in a changing ocean: Impact on the physiology and life history of pteropods in the Scotia Sea; Southern Ocean A thesis submitted to the School of Environmental Sciences of the University of East Anglia in partial fulfilment of the requirements for the degree of Doctor of Philosophy By Jessie Gardner June 2019 © This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with the author and that use of any information derived therefrom must be in accordance with current UK Copyright Law. In addition, any quotation or extract must include full attribution. Winners and losers in a changing ocean: Impact on the physiology and life history of pteropods in the Scotia Sea; Southern Ocean. © Copyright 2019 Jessie Gardner 2 Winners and losers in a changing ocean: Impact on the physiology and life history of pteropods in the Scotia Sea; Southern Ocean. Abstract The Scotia Sea (Southern Ocean) is a hotspot of biodiversity, however, it is one of the fastest warming regions in the world alongside one of the first to experience ocean acidification (OA). Thecosome (shelled) pteropods are planktonic gastropods which can dominate the Scotia Sea zooplankton community, form a key component of the polar pelagic food web and are important contributors to carbon and carbonate fluxes. Pteropods have been identified as sentinel species for OA, since their aragonitic shells are vulnerable to dissolution in waters undersaturated with respect to aragonite. In this thesis I investigate the impact of a changing ocean on the physiology and life history of pteropods in the Scotia Sea. -
Glione Limacina in Plymouth Waters. by Marie V
[ 785 ] Glione limacina in Plymouth Waters. By Marie V. Lebour,D.Se., Naturalist at the Plymouth Laboratory. With Plates I and II. THEpteropod Olione limacina (Phipps), now regarded as one of the tecti- branchs, occurs at times in the neighbourhood of Plymouth. In 1930, however, it was extraordinarily abundant, especially in the summer, and was breeding freely. Although not specially recorded it has been seen singly or in small numbers in almost any month of the year, and for some years the eggs and larvffi(not recognised at the time as belonging to Clione) have been seen in summer. So far it is known from the British coasts in the North Sea and the west and extreme south-west of England. Its distribution, as known up to 1908, is given fully for the area of Inter- national Fisheries Invest:gations by Paulsen (1910). There it is shown that it is an Arctic-boreal species, spreading southwards nearly to the Bay of Biscay, which is about its southerly limit. It is known to occur in the northern and mid North Sea, but not in the southern North Sea, and at that time was only recorded from the Channel in the extreme west. It is also common in the Atlantic. Paulsen was led to infer that Clione limacina did not enter the North Sea from the Channel, but its prevalence sometimes at Plymouth shows that it can come a long way up the Channel and, as few samples are taken to the east and in the southern North Sea, this view should be carefully reconsidered.