Amphipoda Key to Amphipoda Gammaridea

Total Page:16

File Type:pdf, Size:1020Kb

Amphipoda Key to Amphipoda Gammaridea GRBQ188-2777G-CH27[411-693].qxd 5/3/07 05:38 PM Page 545 Techbooks (PPG Quark) Dojiri, M., and J. Sieg, 1997. The Tanaidacea, pp. 181–278. In: J. A. Blake stranded medusae or salps. The Gammaridea (scuds, land- and P. H. Scott, Taxonomic atlas of the benthic fauna of the Santa hoppers, and beachhoppers) (plate 254E) are the most abun- Maria Basin and western Santa Barbara Channel. 11. The Crustacea. dant and familiar amphipods. They occur in pelagic and Part 2 The Isopoda, Cumacea and Tanaidacea. Santa Barbara Museum of Natural History, Santa Barbara, California. benthic habitats of fresh, brackish, and marine waters, the Hatch, M. H. 1947. The Chelifera and Isopoda of Washington and supralittoral fringe of the seashore, and in a few damp terres- adjacent regions. Univ. Wash. Publ. Biol. 10: 155–274. trial habitats and are difficult to overlook. The wormlike, 2- Holdich, D. M., and J. A. Jones. 1983. Tanaids: keys and notes for the mm-long interstitial Ingofiellidea (plate 254D) has not been identification of the species. New York: Cambridge University Press. reported from the eastern Pacific, but they may slip through Howard, A. D. 1952. Molluscan shells occupied by tanaids. Nautilus 65: 74–75. standard sieves and their interstitial habitats are poorly sam- Lang, K. 1950. The genus Pancolus Richardson and some remarks on pled. Paratanais euelpis Barnard (Tanaidacea). Arkiv. for Zool. 1: 357–360. Lang, K. 1956. Neotanaidae nov. fam., with some remarks on the phy- logeny of the Tanaidacea. Arkiv. for Zool. 9: 469–475. Key to Amphipoda Lang, K. 1961. Further notes on Pancolus californiensis Richardson. Arkiv. for Zool. 13: 573–577. 1. Gills not exceeding three pairs, female oöstegites not ex- Larsen, K. and G. D. F. Wilson. 2002. Tanaidacean phylogeny, the first step: the superfamily Paratanaidoidea. J. Zool. Syst. Evol. Res. 40: 205–222. ceeding two pairs; pleon and urosome (abdomen) vestig- Lee, W. L., and M. A. Miller. 1980. Isopoda and Tanaidacea: the isopods ial and pereonite 1 fused to head...................2 and allies. In Intertidal invertebrates of California. pp. 536–558. R. — Gills and oöstegites exceeding three pairs, abdomen and ab- H. Morris, D. P. Abbott, and E. C. Haderlie, eds. pp. 536-558. Stan- dominal appendages well developed; head and pereonite 1 ford, CA: Stanford University Press, 690 pp. separate .......................................3 Menzies, R. J. 1949. A new species of Apseudid crustacean of the genus Synapseudes from northern California (Tanaidacea). Proc. U.S. Natl. 2. Body segments tubular, legs with moderate hooks, free liv- Mus. 99: 509–515. ing (plate 254A) ........................Caprellidae Menzies, R. J. 1953. The Apseudid Chelifera of the eastern tropical and — Body segments loosely separated, legs powerful with sharp north temperate Pacific Ocean. Bull. Mus. Comp. Zool. 107: 443–496. hooks, parasites of cetaceans (plate 254B) .....Cyamidae Miller, M. A. 1940. The isopod Crustacea of the Hawaiian Islands (Che- 3. Urosome with only two segments; palps of maxillipeds ab- lifera and Valvifera). Occ. Pap. Bernice P. Bishop Mus. 15, no. 26, pp. 299–321. sent; eyes usually cover most of head but can be tiny; en- Miller, M. A. 1968. Isopoda and Tanaidacea from buoys in coastal wa- tirely pelagic (plate 254C) .................Hyperiidea ters of the continental United States, Hawaii, and the Bahamas (Crus- — Urosome with three segments; palps of maxillipeds present tacea). Proc. U.S. Natl. Mus. 125: 1–53. ..............................................4 Richardson, H. 1905a. Descriptions of a new genus of Isopoda belong- 4. Pleopods leaflike, vestigial, or absent; movable compound ing to the family Tanaidae and of a new species of Tanais, both from Monterey Bay, California. Proc. U.S. Natl. Mus. 28: 367–370. claw of gnathopods formed of articles 6 and 7 together; Richardson, H. 1905b. A monograph on the isopods of North America. body vermiform; without coxal and epimeral plates; en- Washington, D.C. Smithsonian Institution, 727 pp. tirely interstitial (unreported from the northeast Pacific) Sieg, J. 1980. Taxonomische Monographie der Tanaidae Dana, 1849 (plate 254D) ..........................Ingolfiellidea (Crustacea: Tanaidacea). Abhandlungen Senckenbergische Natur- — Pleopods well developed, with few exceptions; dactyls of forschende Gesellschaft 537: 1–267. Sieg, J. 1986. Distribution of the Tanaidacea: Synopsis of the known data gnathopods formed by article 7 alone (plate 254E)...... and suggestions on possible distribution patterns, pp. 165–193. In: .....................................Gammaridea Crustacean Issues, vol. 4, Crustacean Biogeography, F. R. Schram, ed., Balkema, Rotterdam, The Netherlands. Sieg, J., and R. N. Winn. 1979. Keys to suborders and families of Gammaridea Tanaidacea (Crustacea). Proc. Biol. Soc. Wash. 91: 840–846. Sieg, J., and R. N. Winn. 1981. The Tanaidae (Crustacea; Tanaidacea) of JOHN W. CHAPMAN California, with a key to the world genera. Proc. Biol. Soc. Wash. 94: 315–343. (Plates 255–304) The ubiquitous and abundant gammaridean amphipods are critically important in marine and estuarine shallow-water Amphipoda ecosystems of the northeast Pacific and warrant reliable, work- able guides to the species. The numerical abundances and (Plate 254) species and life-history diversities of the Gammaridea exceed The Amphipoda have been divided into the suborders Gam- all other eucaridan or peracaridan orders. Gammaridean am- maridea, Caprellidea, Cyamidea, Hyperiidea and Ingolfiel- phipods are one of the most common aquatic taxa. The tax- lidea (Schram 1986, Crustacea. Oxford University Press, New onomy and systematics of marine eastern Pacific species have York). However, Myers and Lowry (2003) regard the caprel- greatly advanced since 1975, but many undescribed species oc- lids, or skeleton shrimps, and the cyamids, or whale lice, as cur in the region and little more than the names of most described families Caprellidae and Cyamidae. These distinctive groups species are known. The lack of research is disproportionate to are covered in separate sections in this manual, for ease of these species’ importance in ecosystems that are of great interest recognition and identification. to humans. The Caprellidae (plate 254A) occur on solid surfaces and are Gammaridean amphipods are critical food sources of strictly marine or estuarine. The Cyamidae are ectoparasites of whales, fish, and birds, (Moore et al. 2003, McCurdy et al. 2005, cetaceans and are occasionally found on beached whales and Schneider and Harrington 1981) and are highly sensitive to dolphins (plate 254B). The Hyperiidea (plate 254C) are para- environmental alterations (Conlan 1994, Zajac et al. 2003). sites and commensals of marine macrozooplankton and are All amphipods care for their offspring for extended periods exclusively pelagic. Hyperiids are occasionally discovered free (Jones 1971, Shillaker and Moore 1987). Some change sex swimming intertidally or in shallow-water plankton tows, or (Lowry and Stoddart 1986); others attract, hold, and defend are found attached beneath or embedded in the bells of mates (Borowsky1983, 1984, 1985; Conlan 1989, 1995a) and AMPHIPODA: GAMMARIDEA 545 GRBQ188-2777G-CH27[411-693].qxd 5/3/07 05:38 PM Page 546 Techbooks (PPG Quark) PLATE 254 Amphipoda. A, Caprellidae—Caprella mutica; B, Cyamidae—Cyamus scammoni; C, Hyperiidea—Hyperoche medusarum (Müller, 1776) in situ; D, Ingolfiellidea—Ingolfiella fuscina Dojiri and Seig, 1987; E, Gammaridea—generalized body; F, G, generalized upper lip; H, generalized mandible; I, generalized head; J, generalized lower lip; K, generalized maxilla 1; L, generalized maxilla 2; M, Polycheria mandible; N, generalized maxilliped; O, uropod 1, Paragrubia uncinata; P, telson, Eohaustorius; Q, telson, Batea lobata; R, telson, Parallorchestes leblondi; S, telson, Stenothoe estacola; T, telson, Paracorophium sp.; U, gnathopod 1, Aoroides secundus; V, gnathopod 2, Ericthonius brasiliensis; W, gnathopod 1, Americhelidium shoemakeri; X, gnathopod 2, Americhelidium rectipalmum; Y, gnathopod 1, Stenothoe valida (figures modified from: Barnard 1953,1962c, 1965, 1975; Barnard and Karaman 1991a, 1991b; Bousfield 1973; Bousfield and Chevrier 1996; Bousfield and Hendrycks 2002; Bousfield and Kendall 1994; Doiji and Sieg 1987, Flores and Brusca 1975; Gurjanova 1938; Margolis et al. 2000; Todd Miller, personal communication; and Platovoet et al. 1995). GRBQ188-2777G-CH27[411-693].qxd 5/3/07 05:38 PM Page 547 Techbooks (PPG Quark) territories (Connell 1963). Some use chemicals for defense bathymetric, or ecological boundaries. Barnard’s (1975) em- (Hay et al. 1987, Hay et al. 1990) or are repelled by defensive phasis on durable and external morphology is followed with chemicals (Hay et al. 1988, 1990; Cronin and Hay 1996a, “natural” dichotomies sacrificed when artificial distinctions are 1996b). Some species undergo risky long-distance migrations more apparent, where family, genus, or species relationships re- (Chess 1979, Mills 1967, Watkin 1941), and others exploit, main poorly resolved, where difficult dissections or magnifi- imitate, parasitize, eat (Crane 1969, Cartwright and Behrens cations of greater than 40x can be avoided, or where characters 1980, Goddard, Skogsberg, and Vansell 1928), displace, or at- are fragile or difficult to observe or to define. Occasional notes tack other invertebrates and fish (Bousfield 1987, Wilhelm in the species lists are to assist with identifications, indicate pit- and Schindler 1999); burrow in wood (Barnard 1955c) or falls, or provoke interest. macroalgae
Recommended publications
  • A New Amphipod Species (Peracarida: Amphipoda
    Available online at www.sciencedirect.com Revista Mexicana de Biodiversidad Revista Mexicana de Biodiversidad 86 (2015) 332–336 www.ib.unam.mx/revista/ Taxonomy and systematics A new amphipod species (Peracarida: Amphipoda: Ampithoidae) collected from Cenote Aerolito, Cozumel Island, Quintana Roo Una especie nueva de anfípodo (Peracarida: Amphipoda: Ampithoidae) recolectado del cenote Aerolito, isla Cozumel, Quintana Roo Manuel Ortiz, Ignacio Winfield ∗ Laboratorio de Crustáceos, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de los Barrios 1, Los Reyes Iztacala, 54090 Tlalnepantla, Estado de México, Mexico Received 10 February 2014; accepted 2 February 2015 Available online 28 May 2015 Abstract A new species of amphipod belonging to the family Ampithoidae was collected from Cenote Aerolito, Cozumel Island, Quintana Roo associated with a macroalgae bed. The main differences between the new species and the previously recorded species in the Gulf of Mexico and Caribbean Sea, Cymadusa compta and Cymadusa setosa respectively, are also presented. The new species increases the globally described number of Cymadusa species to 33. All Rights Reserved © 2015 Universidad Nacional Autónoma de México, Instituto de Biología. This is an open access item distributed under the Creative Commons CC License BY-NC-ND 4.0. Keywords: Crustacea; Ampithoidae; Cymadusa; Anchialine system; Mexican Caribbean Resumen Se describe una especie nueva de anfípodo de la familia Ampithoidae recolectada de macroalgas del Cenote Aerolito, Isla Cozumel, Quintana Roo. Se presentan las principales diferencias entre la especie nueva y las especies previamente documentadas para el golfo de México y el mar Caribe, C. compta y C. setosa. Esta especie nueva incrementa el número de especies de Cymadusa a 33 a nivel global.
    [Show full text]
  • Keys to the Hawaiian Marine Gammaridea, 0-30 Meters
    J. LAURENS BARNt Keys to the Hawaiian Marine Gammaridea, 0-30 Meters SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY NUMBER 58 SERIAL PUBLICATIONS OF THE SMITHSONIAN INSTITUTION The emphasis upon publications as a means of diffusing knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the Insti- tution, Joseph Henry articulated a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge not strictly professional." This keynote of basic research has been adhered to over the years in the issuance of thousands of titles in serial publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Annals of Flight Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Z0°l°iy Smithsonian Studies in History and Technology In these series, the Institution publishes original articles and monographs dealing with the research and collections of its several museums and offices and of professional colleagues at other institutions of learning. These papers report newly acquired facts, synoptic interpretations of data, or original theory in specialized fields. Each publica- tion is distributed by mailing lists to libraries, laboratories, institutes, and interested specialists throughout the world. Individual copies may be obtained from the Smith- sonian Institution Press as long as stocks are available. S. DILLON RIPLEY Secretary Smithsonian Institution SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY NUMBER 58 j.
    [Show full text]
  • Additions to and Revisions of the Amphipod (Crustacea: Amphipoda) Fauna of South Africa, with a List of Currently Known Species from the Region
    Additions to and revisions of the amphipod (Crustacea: Amphipoda) fauna of South Africa, with a list of currently known species from the region Rebecca Milne Department of Biological Sciences & Marine Research Institute, University of CapeTown, Rondebosch, 7700 South Africa & Charles L. Griffiths* Department of Biological Sciences & Marine Research Institute, University of CapeTown, Rondebosch, 7700 South Africa E-mail: [email protected] (with 13 figures) Received 25 June 2013. Accepted 23 August 2013 Three species of marine Amphipoda, Peramphithoe africana, Varohios serratus and Ceradocus isimangaliso, are described as new to science and an additional 13 species are recorded from South Africa for the first time. Twelve of these new records originate from collecting expeditions to Sodwana Bay in northern KwaZulu-Natal, while one is an introduced species newly recorded from Simon’s Town Harbour. In addition, we collate all additions and revisions to the regional amphipod fauna that have taken place since the last major monographs of each group and produce a comprehensive, updated faunal list for the region. A total of 483 amphipod species are currently recognized from continental South Africa and its Exclusive Economic Zone . Of these, 35 are restricted to freshwater habitats, seven are terrestrial forms, and the remainder either marine or estuarine. The fauna includes 117 members of the suborder Corophiidea, 260 of the suborder Gammaridea, 105 of the suborder Hyperiidea and a single described representative of the suborder Ingolfiellidea.
    [Show full text]
  • Crustacea: Amphipoda: Dogielinotidae) from the Nipa Palm in Thailand, with an Updated Key to the Genera
    RESEARCH ARTICLE Discovery of a new genus and species of dogielinotid amphipod (Crustacea: Amphipoda: Dogielinotidae) from the Nipa palm in Thailand, with an updated key to the genera 1,2 3 4 Koraon WongkamhaengID *, Pongrat Dumrongrojwattana , Myung-Hwa Shin a1111111111 a1111111111 1 Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, Thailand, 2 Coastal Oceanography and Climate Change Research Center, Prince of Songkla University, Hatyai, Songkhla, a1111111111 Thailand, 3 Department of Biology, Faculty of Science, Burapha University, Bangsaen, Chonburi, Thailand, a1111111111 4 National Marine Biodiversity Institute of Korea, Seocheon, South Korea a1111111111 * [email protected] Abstract OPEN ACCESS Citation: Wongkamhaeng K, Dumrongrojwattana During a scientific survey, a new genus of the dogielinotid amphipoda was found in the Nipa P, Shin M (2018) Discovery of a new genus and palm (Nypa fruticans) in Bang Krachao Urban Oasis, Samut Prakan Province, Thailand. We species of dogielinotid amphipod (Crustacea: placed this new genus, Allorchestoides gen. nov., within the family Dogielinotidae. The new Amphipoda: Dogielinotidae) from the Nipa palm in Thailand, with an updated key to the genera. PLoS taxa can be easily distinguished from the remaining genera by differences in the incisor of ONE 13(10): e0204299. https://doi.org/10.1371/ the left and right mandibles, apical robust setae of the maxilla 1, and the large coxa and journal.pone.0204299 strong obtuse palm in the female gnathopod 1. The type species of Allorchestoides gen. Editor: Feng Zhang, Nanjing Agricultural University, nov., Allorchestoides rosea n. sp., is described here in, with an updated key to the genera of CHINA the family Dogielinotidae.
    [Show full text]
  • Facts and Arguments for Darwin
    22102077550 Med K3642 #• Digitized by the Internet Archive in 2017 with funding from Wellcome Library https://archive.org/details/b29338426 FACTS AND ARGUMENTS FOR DARWIN. BY FRITZ MÜLLER. WITH ADDITIONS BY THE AUTHOR TRANSLATED FROM THE GERMAN By W. S. DALLAS, F.L.S., ASSISTANT SECRETARY TO THE GEOLOGICAL SOCIETY OF LONDON. WITH ILLUSTRATIONS. LONDON: JOHN MURRAY, ALBEMARLE STREET. 1869. EI'/fL.U TT Cblj T« til ! 1a^: MB. DARWIN’S WORKS. A NATURALIST’S VOYAGE ROUND THE WORLD ; being a Journal of Researches into the Natural History and Geology of Couktries Visited. Post 8vo. 9s. THE ORIGIN of SPECIES, by MEANS of NATURAL SELECTION"; or, The Preservation of Favoured Races in the Struggle for Life. Woodcuts. Post 8vo. 15s. THE VARIOUS CONTRIVANCES by wbicb BRITISH and FOREIGN ORCHIDS are FERTILIZED by INSECTS, and on the GOOD EFFECTS of INTERCROSSING. Woodcuts. Post 8vo. 9s. THE VARIATION OF ANIMALS AND PLANTS UNDER DOMESTICATION. Illustrations. 2 vols., 8vo. 28s. TRANSLATOR’S PREFACE. My principal reason for undertaking the translation of Dr. Fritz Muller’s admirable work on the Crustacea, entitled ‘Für Darwin,’ was that it was still, although published as long ago as 1864, and highly esteemed by the author’s scientific countrymen, absolutely unknown to a great number of English naturalists, including some who have occupied themselves more or less specially with the subjects of which it treats. It possesses a value quite independent of its reference to Darwinism, due to the number of highly interesting and important facts in the natural history and par¬ ticularly the developmental history of the Crustacea, which its distinguished author, himself an unwearied and original investigator of these matters, has brought together in it.
    [Show full text]
  • The 17Th International Colloquium on Amphipoda
    Biodiversity Journal, 2017, 8 (2): 391–394 MONOGRAPH The 17th International Colloquium on Amphipoda Sabrina Lo Brutto1,2,*, Eugenia Schimmenti1 & Davide Iaciofano1 1Dept. STEBICEF, Section of Animal Biology, via Archirafi 18, Palermo, University of Palermo, Italy 2Museum of Zoology “Doderlein”, SIMUA, via Archirafi 16, University of Palermo, Italy *Corresponding author, email: [email protected] th th ABSTRACT The 17 International Colloquium on Amphipoda (17 ICA) has been organized by the University of Palermo (Sicily, Italy), and took place in Trapani, 4-7 September 2017. All the contributions have been published in the present monograph and include a wide range of topics. KEY WORDS International Colloquium on Amphipoda; ICA; Amphipoda. Received 30.04.2017; accepted 31.05.2017; printed 30.06.2017 Proceedings of the 17th International Colloquium on Amphipoda (17th ICA), September 4th-7th 2017, Trapani (Italy) The first International Colloquium on Amphi- Poland, Turkey, Norway, Brazil and Canada within poda was held in Verona in 1969, as a simple meet- the Scientific Committee: ing of specialists interested in the Systematics of Sabrina Lo Brutto (Coordinator) - University of Gammarus and Niphargus. Palermo, Italy Now, after 48 years, the Colloquium reached the Elvira De Matthaeis - University La Sapienza, 17th edition, held at the “Polo Territoriale della Italy Provincia di Trapani”, a site of the University of Felicita Scapini - University of Firenze, Italy Palermo, in Italy; and for the second time in Sicily Alberto Ugolini - University of Firenze, Italy (Lo Brutto et al., 2013). Maria Beatrice Scipione - Stazione Zoologica The Organizing and Scientific Committees were Anton Dohrn, Italy composed by people from different countries.
    [Show full text]
  • (Crustacea : Amphipoda) of the Lower Chesapeake Estuaries
    W&M ScholarWorks Reports 1971 The distribution and ecology of the Gammaridea (Crustacea : Amphipoda) of the lower Chesapeake estuaries James Feely Virginia Institute of Marine Science Marvin L. Wass Virginia Institute of Marine Science Follow this and additional works at: https://scholarworks.wm.edu/reports Part of the Marine Biology Commons, Oceanography Commons, Terrestrial and Aquatic Ecology Commons, and the Zoology Commons Recommended Citation Feely, J., & Wass, M. L. (1971) The distribution and ecology of the Gammaridea (Crustacea : Amphipoda) of the lower Chesapeake estuaries. Special papers in marine science No.2. Virginia Institute of Marine Science, College of William and Mary. http://doi.org/10.21220/V5H01D This Report is brought to you for free and open access by W&M ScholarWorks. It has been accepted for inclusion in Reports by an authorized administrator of W&M ScholarWorks. For more information, please contact [email protected]. THE DISTRIBUTION AND ECOLOGY OF THE GAMMARIDEA (CRUSTACEA: AMPHIPODA) OF THE LOWER CHESAPEAKE ESTUARIES James B. Feeley and Marvin L. Wass SPECIAL PAPERS IN MARINE SCIENCE NO. 2 VIRGIN IA INSTITUTE OF MARINE SC IE NCE Gloucester Point, Virginia 23062 1971 THE DISTRIBUTION AND ECOLOGY OF THE GAMMARIDEA (CRUSTACEA: AMPHIPODA) OF THE LOWER 1 CHESAPEAKE ESTUARIES James B. Feeley and Marvin L. Wass SPECIAL PAPERS IN MARINE SCIENCE NO. 2 1971 VIRGINIA INSTITUTE OF MARINE SCIENCE Gloucester Point, Virginia 23062 This document is in part a thesis by James B. Feeley presented to the School of Marine Science of the College of William and Mary in Virginia in partial fulfillment of the requirements for the degree of Master of Arts.
    [Show full text]
  • OREGON ESTUARINE INVERTEBRATES an Illustrated Guide to the Common and Important Invertebrate Animals
    OREGON ESTUARINE INVERTEBRATES An Illustrated Guide to the Common and Important Invertebrate Animals By Paul Rudy, Jr. Lynn Hay Rudy Oregon Institute of Marine Biology University of Oregon Charleston, Oregon 97420 Contract No. 79-111 Project Officer Jay F. Watson U.S. Fish and Wildlife Service 500 N.E. Multnomah Street Portland, Oregon 97232 Performed for National Coastal Ecosystems Team Office of Biological Services Fish and Wildlife Service U.S. Department of Interior Washington, D.C. 20240 Table of Contents Introduction CNIDARIA Hydrozoa Aequorea aequorea ................................................................ 6 Obelia longissima .................................................................. 8 Polyorchis penicillatus 10 Tubularia crocea ................................................................. 12 Anthozoa Anthopleura artemisia ................................. 14 Anthopleura elegantissima .................................................. 16 Haliplanella luciae .................................................................. 18 Nematostella vectensis ......................................................... 20 Metridium senile .................................................................... 22 NEMERTEA Amphiporus imparispinosus ................................................ 24 Carinoma mutabilis ................................................................ 26 Cerebratulus californiensis .................................................. 28 Lineus ruber .........................................................................
    [Show full text]
  • North Atlantic Warming Over Six Decades Drives Decreases in Krill
    ARTICLE https://doi.org/10.1038/s42003-021-02159-1 OPEN North Atlantic warming over six decades drives decreases in krill abundance with no associated range shift ✉ Martin Edwards 1 , Pierre Hélaouët2, Eric Goberville 3, Alistair Lindley2, Geraint A. Tarling 4, Michael T. Burrows5 & Angus Atkinson 1 In the North Atlantic, euphausiids (krill) form a major link between primary production and predators including commercially exploited fish. This basin is warming very rapidly, with species expected to shift northwards following their thermal tolerances. Here we show, 1234567890():,; however, that there has been a 50% decline in surface krill abundance over the last 60 years that occurred in situ, with no associated range shift. While we relate these changes to the warming climate, our study is the first to document an in situ squeeze on living space within this system. The warmer isotherms are shifting measurably northwards but cooler isotherms have remained relatively static, stalled by the subpolar fronts in the NW Atlantic. Conse- quently the two temperatures defining the core of krill distribution (7–13 °C) were 8° of latitude apart 60 years ago but are presently only 4° apart. Over the 60 year period the core latitudinal distribution of euphausiids has remained relatively stable so a ‘habitat squeeze’, with loss of 4° of latitude in living space, could explain the decline in krill. This highlights that, as the temperature warms, not all species can track isotherms and shift northward at the same rate with both losers and winners emerging under the ‘Atlantification’ of the sub-Arctic. 1 Plymouth Marine Laboratory, Plymouth PL13DH, UK.
    [Show full text]
  • Opportunities for Biodiversity Enhancement in Plantation Forests
    Opportunities for biodiversity enhancement in plantation forests Proceedings of the COFORD seminar, 24 October 2002, Cork edited by Lauren MacLennan1 1 COFORD, Technology Transfer Co-ordinator, Agriculture Building, Belfield, Dublin 4. Email: [email protected] COFORD, National Council for Forest Research and Development Agriculture Building Belfield, Dublin 4 Ireland Tel: + 353 1 7167700 Fax: + 353 1 7161180 © COFORD 2004 First published in 2004 by COFORD, National Council for Forest Research and Development, Belfield, Dublin 4, Ireland. All rights reserved. No part of this publication may be reproduced, or stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, magnetic tape, mechanical, photocopying recording or otherwise, without prior permission in writing from COFORD. The views and opinions expressed in this publication belong to the authors alone and do not necessarily reflect those of COFORD. ISBN 1 902696 35 2 Title: Opportunities for biodiversity enhancement in plantation forests. Editor: Lauren MacLennan Citation: MacLennan, L. (editor) 2004. Opportunities for biodiversity enhancement in plantation forests. Proceedings of the COFORD Seminar, 24 October 2002, Cork. COFORD, Dublin. iv Biodiversity opportunities in plantations managed for wood supply Biodiversity opportunities in plantations managed for wood supply Orla Fahy2 and Noel Foley3 INTRODUCTION Afforestation Programme (Forest Service 2000a) where the primary objective is wood The Forest Service of the Department of
    [Show full text]
  • Echinodermata
    Echinodermata Bruce A. Miller The phylum Echinodermata is a morphologically, ecologically, and taxonomically diverse group. Within the nearshore waters of the Pacific Northwest, representatives from all five major classes are found-the Asteroidea (sea stars), Echinoidea (sea urchins, sand dollars), Holothuroidea (sea cucumbers), Ophiuroidea (brittle stars, basket stars), and Crinoidea (feather stars). Habitats of most groups range from intertidal to beyond the continental shelf; this discussion is limited to species found no deeper than the shelf break, generally less than 200 m depth and within 100 km of the coast. Reproduction and Development With some exceptions, sexes are separate in the Echinodermata and fertilization occurs externally. Intraovarian brooders such as Leptosynapta must fertilize internally. For most species reproduction occurs by free spawning; that is, males and females release gametes more or less simultaneously, and fertilization occurs in the water column. Some species employ a brooding strategy and do not have pelagic larvae. Species that brood are included in the list of species found in the coastal waters of the Pacific Northwest (Table 1) but are not included in the larval keys presented here. The larvae of echinoderms are morphologically and functionally diverse and have been the subject of numerous investigations on larval evolution (e.g., Emlet et al., 1987; Strathmann et al., 1992; Hart, 1995; McEdward and Jamies, 1996)and functional morphology (e.g., Strathmann, 1971,1974, 1975; McEdward, 1984,1986a,b; Hart and Strathmann, 1994). Larvae are generally divided into two forms defined by the source of nutrition during the larval stage. Planktotrophic larvae derive their energetic requirements from capture of particles, primarily algal cells, and in at least some forms by absorption of dissolved organic molecules.
    [Show full text]
  • Glossary for the Echinodermata
    February 2011 Christina Ball ©RBCM Phil Lambert GLOSSARY FOR THE ECHINODERMATA OVERVIEW The echinoderms are a globally distributed and morphologically diverse group of invertebrates whose history dates back 500 million years (Lambert 1997; Lambert 2000; Lambert and Austin 2007; Pearse et al. 2007). The group includes the sea stars (Asteroidea), sea cucumbers (Holothuroidea), sea lilies and feather stars (Crinoidea), the sea urchins, heart urchins and sand dollars (Echinoidea) and the brittle stars (Ophiuroidea). In some areas the group comprises up to 95% of the megafaunal biomass (Miller and Pawson 1990). Today some 13,000 species occur around the world (Pearse et al. 2007). Of those 13,000 species 194 are known to occur in British Columbia (Lambert and Boutillier, in press). The echinoderms are a group of almost exclusively marine organisms with the few exceptions living in brackish water (Brusca and Brusca 1990). Almost all of the echinoderms are benthic, meaning that they live on or in the substrate. There are a few exceptions to this rule. For example several holothuroids (sea cucumbers) are capable of swimming, sometimes hundreds of meters above the sea floor (Miller and Pawson 1990). One species of holothuroid, Rynkatorpa pawsoni, lives as a commensal with a deep-sea angler fish (Gigantactis macronema) (Martin 1969). While the echinoderms are a diverse group, they do share four unique features that define the group. These are pentaradial symmetry, an endoskeleton made up of ossicles, a water vascular system and mutable collagenous tissue. While larval echinoderms are bilaterally symmetrical the adults are pentaradially symmetrical (Brusca and Brusca 1990). All echinoderms have an endoskeleton made of calcareous ossicles (figure 1).
    [Show full text]