DOCSLIB.ORG

Amphipoda: Isopoda: Decapoda

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Amphipoda: Isopoda: Decapoda Table 1.1 List of genera of freshwater crustacea collected during the course of this study. Syncarida: Anaspides, Paranaspides, Allanaspides, Micraspides, Koonunga. Amphipoda: Austrochiltonia, Paracalliope, 'Gammarus', Hurleya, 'Niphargus', Neoniphargus, Paraleptamphopus, Perthia, Uroctena, ? fontana. Isopoda: Heterias. Amphisopus, Paramphisopus, Crenoicus, Synamphisopus, Phreatoicopsis, Uramphisopus, Mesacanthotelson, Onchotelson, Onchotelson, Phreatoicoides ? Hypsimetopus. Decapoda: Engeus, Geocharax, Gramastacus, Cherax, Astacopsis, Parastacoides. Maps 1.1 to 1.6: Phanerozoic maps, southern hemisphere. After Smith et al (1973). 1.1: Carboniferous. Hs. indicates the area where the phreatoicid fossil Heslerella shermani was found. 1.2: Permian (including the northern hemisphere), also indicating where the fossil phreatoicids Palaeocrangon problematicus (Pp) and Protamphisopus reichelti have been found. 1 ~(J ' 1. Triassic. Pw indicates the area .where the phreatoicid fossil Protamphisopus wianaI!l$t;tensis was ·.fciuni.i'~ 1.6 Early Tertiary. 1.5 Cretaceous Table 1. 2 Listing the probable sequence and time for the separation of the relevant fragments of Gondwanaland (from McKenna, 1973). Continents seEarating Time (million ;years) West Antarctic - South Afri<;:a 75-100 " " - New Zealand f,' 80 East Antarctic - Africa 92-100 II II - Australia 43-60 II ._ " - India ,_ 100 Australia - New Zealand ) 80 TORRESIAN -- - --- -- ----' "', ' ' ' ' ' \ \ \ \ \ I I .. r .... ··:.. :, ' ,• ..·/ '-./-. ........ ' ..·/ l ')•:.!! •,!_.·· / • BASSIAN Map 1. 7: Australian - Tasmanian fauna! provinces. Table 3.1: Ma.ting Cues: Maximum no. ot pairs observed during studies on the frequency of mating in 4 light regimes (continuous dark; short photo­ period = 8 hrs illumina.tion; long photoperiod = 16 hrs illumination; continuous light) at 20°0 and 5°0. 20 temales and 20 males of Uran!J?bisgpus relictus relictus were used in each treatment. Temperature lfaximum 00 No. Pairs 5 0 Continuous light 20 0 5 4 Long photoperiod I 20 I 11 5 1 Short photoperiod 20 5. 5 5 Continuous dark 20 16 Table 2.2: Nos. of embr.yos per brood pouch from six species of phreatoicids. Rallge, I Average Species i Range, !Average J No. of Collecting sites Embryo No. , No. length of length I obsetvations i female (mm) ! (Dill) i I i Protamphisopus 14 - 10.. ) 36.9 7.1 - 12.1 8.59 I 12 Pinjerra, palustris ' I W.A. i I I I .. I I 15 - 68 ! 28.4 7.0 - 11.9 I 8.28 l 14 IPerth, ' I W.A. ! ! l I I Ma.wbeyamphisopus 14 - 62 29.3 16.7 - 23.0 19.59 4 I Cape Le Grellde, le grand.us W.A. l I I l I Ura.mphiso12us 5 - 15 11.1 7.0 - 9.6 l 8. 314- 8 Mt. Barrow, australis ! Tas. l I I i ' i Uramphisopus 9 - 40 25.9 9.3 - 13.3 I 10.86 29 I St. Peter's Pass, relictus relictus I Tas. I I ! Onchotelson 39 I 33.0 10.4 - 11.6 10.90 I 3 Great Lake, 29 - l I brevicaudatus I I Tas. I I I i ! Phreatoicoides 3 - 25 13.6 7.0 - 12.4 9.73 8 Crotty, spp. I I Ta.a. Plate 3.1 (,,, ~: Smears of faeces f'rom phreatoicids 'fed' on A. euoalypt leaves, B. dolerite rocks. (Photograph per courtesy Dr. P. S. Lake.) Plate J.2 (opp.): Smears of faeces from phreatoicid.s fed on A. moss, B. mud; c. another phreatoicid - or its cast-off exuvium. (Photograph per courtesy Dr, P. S. Lake.) I Table 3.3: Trout predation on phreatoioids. A sum:nary of the data in Xmtt, 1973. No. of guts j Total No. of I No. of No. of guts Area I with 1 guts with I locaJ.ities examined I phreatoicids phreatoicids 'I I as mrin food Central 6 96 18 I Plateau I 37 : I! I ! ! North West j I 8 I 0 1 Coast i 92 ' ' I I ' North-South ' 8 l 132 I 0 1 Eslc System I I ! ' 'j i Others I 9 151 I 0 0 I ' I i Total I I 31 471 18 I 39 ' l I I l The data in the table include results from the additional analyses of: (1) 10 guts of fish from Little Pine Lake (Central Plateau), caught 1971/72. (2) 14 " n n n Roger River (North West Coast), caught 1974. (3) 11 " " " " dams at Beaconsfield (Esk River System), caught 1971/72. (4) 8 " " n • Ri.ngarooma River (Others), caught 1971. I I Table J.4,: Frequepey of dietary items in gizzards of.' two apeeies ot duck. Anas oe.stanea An.as su;eerciliosa (Black Duck) (Chestmit Teal) lagoon of Lake Lake le.ke Cambridge I Lake Sorell Tiberias Crescent Crescent -:::--~d Islands Plant stems 1 2 l 4 2 14 2 ! Plant seeds 1 4 3 15 6 1&Jllusoa 1 1 1 ' Insects. I 3 1 1 I 10 3 Amphipoda I 1 I Isopoda 1 I (Phreatoioidae) I I Ostracoda I l 1 I Total No. of 1 Gizzards 3 4 4 15 7 Table 3.5: _lm'ertebrates associated with phreatoioids. Lists of forms from; separate habitats. A. Small rainforest rum.el, possibly in headwaters at the Roger River, north-west Taaman:ia. iltitude 200m. Sample of 26/1/1974. Phreatoioids inhabiting the creek Phreatoiooides sp. Crustacea Amphipoda Gamna.rida.e ( G. aus tralis) Eusiridae (f. larai) Insecta: adults Coleoptera Tenebrionidae Ourculionida.e Insecta: inmature stages Ephemeroptera Leptophlebildae Siphlonuridae Plecoptera Eustheniidae Austroperlidae Capniidae Odonata Aeschnidae Gomphidae Diptera Athericidae Chironomidae Tipulidae Coleoptera Helodidae Hel.minthid.ae Mecoptera Nannochoristid.ae Trichoptera Helioopsychida.e Leptoceridae Sericostornatidae In addition, molluscs (classes Gastropoda and Bivalvia) and platyhelminthes (order Trioladida) were recorded. I Table 3. 5 (Contimed) B. Lake Hartz, a glacially formed lake, altitude southern Tasmania. Sample of 31/a/1974. Phreatoioids inhabiting the lake !• australis. Crustacea Amphipoda Gammaridae (Neoniphargus sp.) Syncarida .Anaspididae (Anaspides tasmaniae) ~<?.!:!.: imnature stages Pleeoptera Gripopterygidae Eustheniidae Capniidae Triohoptera Philorheithridae Diptera. Chironom.idae .Annelida Oligoohaeta. Probably of the family Phreodrilidae Nematomorpha ? Gordioidea C. Invertebrates inhabiting occupied Parastacoides tasmanious burrows, western Tasmania ( quoted in Lake & Newcombe, 1975). All of the associated forms belong to the class Crustacea. The phreatoicids are either Phreatoicoides spp. , Unul!Phisopus austral is or Uramphiso;eus binksi. Order Copepoda Sub-order Cyolopoida Order Syncarida Jlicraspides calmani Allanaspides helonomus Alla.naspides hiclo:na.ni. Table 2•5 (Continued) C. (Continued) Order Isopoda Asellota Family Jani.ridae - 2 forms Neoniphargus - 4 forms "Niphar@" sp. Gamnarus australis Eusiridae Paracalliope tluviatilis Q.raph 2J.: Acanthocepha.lan infection ra. tes. The proportion of a series of monthly samples of phreatoicid.s from Lambert Park, 0.8 southern Tasmania, infected by a.canthocephalans. The period of study is indicated, as is the size of each monthly sample. 0.6 0 ...UJ V UJ u..z 0.4 z 0 .... "'0 "- g "- 0,2 o.o 1971 1972 1973 MONTH M J s M J M M s N J M SAMPLE 43 28 40 53 43 37 22 38 39 51 56 78 56 48 55 64 102 70 83 77 76 52 • Table J.6: Infection of U. australia by an unidentified acanth.ooephalan, Lambert Park Creek, Hobart. The table shows the infection data, DOs. or hosts inf'ected, segregated according to the sex or the intermediate host. To determine the 'r' values, it was assumed that th.ere is an equiproba.ble chance ot inf'ection for individuals belonging to each of the 4 host classes. Data from the 1970 study period have previously been presented by Knott ( 1971). , I I 2 Female: I Study' Male ' Female: j Juvenile i d.t. x value & Period t Gravid Non-gravid , I p.robabili ty i I I I April 1970 : No. infected 91 67 I 25 i 11 to l Total No. 439 15; 155 120 November [ Expected No. I ! I 98.2; 34.24 34.68 26.85 I 3 I 43.93°• 1970 . inf'eoted I j I ' I I p 0.001 ' I I I ! I i Ma.y 1971 , No . inf'ected 107 16 45 20 to ] Total No. 558 92 467 102 l March 197; i Expected No. 86.06 14.19 72.02 I 15.7; I 3 16.62••• j infected I p 0.001 I I i I I ! l No. infected i 198 a; 70 ;1 I I I I I ! I ! Total I Total No. 997 I 245 622 222 I r I ( ! Expected No. 182.58 i I 44.87 11;.90 40.65 ! 3 I 52.91°• I infected ! Ii ! I ' l l) 0.001 • 100 80 • Experimen ta1 treatment 60 • • 0 • <( w 0 • ... 40 z w v C<: • w Cl. 20 Control treatment 8 120 160 200 240 TIME hours Craph 3,2: Respon~e of.!!.• australis to D.D.T. The death rate of phreatoicids in water containing 0.1 ppm D.D.T. The LD:;o., = 52 hours. The control treatment lacked D.D.T. • 30 .. ! 0 t E ..."' C -0 z0 -0 ' .. E Q 20 -C •u C 0 u I 0 E. 0 .IC D. E ,. 10 0 E Cl• :c 10 20 30 Ambient Osmo - concent rot ion ( gm No/ kgm WOIIIH) Graph 3.3: Osmoregulation in the phreatoicid -U. -·----austral.is. The response of the internal haemolymph to varying ambient osmo-concentrations. Osmo-concentration was measured in units equivalent to gm Na/kgm H 2o. [ 1 ,oM Table 3.7: Survival of U. australis at 10)6, 3qg and 50';& seawater dilutions, ({10"'1 knotr, 1ci1J Survival Temp. I TiJDe o 1 1~ seawater 30% seawater 5qg seawater ( c) , (Days) i----~----.--, No. % lj No. td I No. at. l Surviving r Surviving /0 r Surviving /0 1 20 100 20 100 20 100 5 20 100 20 100 17 85 10 18 90 20 100 14- 70 20 18 90 20 100 6 30 30 18 90 19 95 4- 20 4-0 18 90 18 90 , 15 50 18 90 17 85 0 0 1 20 100 19 95 19 95 5 20 100 18 90 10 50 10 20 100 17 85 7 35 20 20 100 17 85 4- 20 30 20 100 17 85 3 15 4-0 20 100 17 85 2 10 50 20 100 17 85 0 0 1 I 20 100 8 4-0 0 0 5 I 15 75 5 25 10 I l 13 65 15 20 I, 13 65 '0 0 50 l 11 55 I ., A '7% relative humid it I' 0 76 7.
Load more

Recommended publications
  • Insect Diapause: a Review
    Journal of Agricultural Science and Technology A 7 (2017) 456-475 doi: 10.17265/2161-6256/2017.07.002 D DAVID PUBLISHING Insect Diapause: A Review Harsimran Kaur Gill1, Gaurav Goyal2 and Gurminder Chahil3 1. Department of Entomology, University of Florida, Gainesville, FL 32611, USA 2. Technical Agronomist, Monsanto, St. Louis, MO 63167, USA 3. Agriculture Extension Coordinator, Manitoba Agriculture, Swan River, MB R0L 0Z0, Canada Abstract: Diapause is defined as a period of suspended development in insects and other invertebrates during unfavorable environmental conditions. Diapause is commonly confused with term “quiescence” as both are dormant development stages. Here this paper aimed to review the research work done on different aspects of diapause. Attempt was made to explain definitions of diapause, incidence, stages and termination of diapause, genetic control, factors affecting diapauses, including temperature, photoperiod, moisture and food, etc.. Key words: Diapause, quiescence, diapauses theory, stages of diapauses, genetic control, biotic and abiotic factors, insects. 1. Introduction embryonic, larval, pupal or adult stages. For example, silkworm moth (Bombyx mori) overwinters in embryo Diapause is an important adaptation in many insect stage, just before segmentation. The gypsy moth species enabling them to sustain in regions which (Lymantia dispar) enters diapause as a fully formed would otherwise be unfavorable for permanent larva with hatching occurring immediately after habitation, and to maintain high numbers in an diapause ends. Obligate diapause is often universal, environment which might otherwise support only a resulting in strictly univoltine life cycle with every low population [1]. The term “diapause” was applied individual in every generation experiencing diapause, by Wheeler [2] to egg stage of grasshopper, irrespective of any possible environmental variations.
    [Show full text]
  • Download (Pdf, 5.07
    THE HERPETOLOGICAL BULLETIN The Herpetological Bulletin is produced quarterly and publishes, in English, a range of articles concerned with herpetology. These include full-length papers, new methodologies, short communications, natural history notes and book reviews. Emphasis is placed on field studies, conservation, veterinary and behavioural aspects. Authors should read and adhere to the British Ecological Society’s Ethical Policy and Guidelines, a full version of which can be found at https://www.thebhs.org/info-advice/134-bhs-ethics-policy or The Herpetological Bulletin (2017), 141: 46- 18. All submissions are liable to assessment by the editorial board for ethical considerations, and publication may be refused on the recommendation of this committee. Contributors may therefore need to justify killing or the use of other animal procedures, if these have been involved in the execution of the work. Likewise, work that has involved the collection of endangered species or disturbance to their habitat(s) will require full justification. Articles reporting the results of experimental research, descriptions of new taxa, or taxonomic revisions should be submitted to The Herpetological Journal (see inside back cover for Editor’s address). Guidelines for Contributing Authors: 1. See the BHS website for a free download of the Bulletin showing Bulletin style. A template is available from the BHS website www.thebhs.org or on request from the Editor. 2. Contributions should be submitted by email to [email protected]. 3. Articles should be arranged in the following general order: Title Name(s) of authors(s) Address(es) of author(s) (please indicate corresponding author) Abstract (required for all full research articles - should not exceed 10% of total word length) Text acknowledgements References Appendices Footnotes should not be included.
    [Show full text]
  • Final Risk Assessments for Diquat Dibromide
    Appendix A: Final Risk Assessment For Diquat Bromide The Water Quality Program NOVEMBER 2002 Publication Number 02-10-046 Appendix A: Final Risk Assessment For Diquat Bromide Prepared by: Kathleen Emmett Washington State Department of Ecology The Water Quality Program NOVEMBER 2002 Publication Number 02-10-046 For additional copies of this document contact: Department of Ecology Publications Distribution Center P.O. Box 47600 Olympia, WA 98504-7600 Telephone: (360) 407-7472 The Department of Ecology is an equal opportunity agency and does not discriminate on the basis of race, creed, color, disability, age, religion, national origin, sex, marital status, disabled veteran's status, Vietnam Era veteran's status, or sexual orientation. If you have special accommodation needs or require this document in an alternative format, please call the secretary of the Watershed Management Section at 360-407-6404. The TTY number is 711 or 1-800-833-6388 TABLE OF CONTENTS Section: Label Description & History 1 Section 2: Chemical Characteristics 35 Section 3: Environmental Fate 47 Section 4: Environmental Effects 129 Section 5: Human Health Effects 355 Diquat Volume 4, Section 1 LABEL DESCRIPTION & HISTORY 29 PAGES SEIS Risk Assessments of Aquatic Herbicides: Study No. 00713 Diquat - LABEL DESCRIPTION & HISTORY Vol. 4, Sec. 1 – Page 1 SEIS Risk Assessments of Aquatic Herbicides: Study No. 00713 Vol. 4, Sec. 1 – Page 2 Diquat - LABEL DESCRIPTION & HISTORY TABLE OF CONTENTS TABLE OF CONTENTS ...............................................................................................................
    [Show full text]
  • Does Biogeography Have a Future in a Globalized World with Globalized Faunas?
    Contributions to Zoology, 77 (2) 127-133 (2008) Does biogeography have a future in a globalized world with globalized faunas? Frederick R. Schram Burke Museum, University of Washington, Seattle, P.O. Box 1567, Langley, WA 98260, USA, [email protected] ton.edu Key words: Anaspidacea, Bathynellacea, globalization, historical biogeography, vicariance Abstract in the Great Lakes and it is said that a new invader species is identified every eight months. The toll on The study of biogeography was once a pillar of evolution the fisheries of the Great Lakes alone has been dev- science. Both Darwin and especially Wallace found great in- astating. Another example is San Francisco Bay, spiration from the consideration of animal distributions. where some 234 invasive species have been recorded However, what is to happen to this discipline in a time of global trade, mass movement of people and goods, and the up to the present day, i.e., something like 90% of the resulting globalization of the planet’s biota? Can we still aquatic population of the bay. Finally, the infamous hope to delve into the fine points of past geography as it af- Chinese mitten crab, Eriocheir sinensis, is conduct- fected animal and plant evolution? Maybe we can, but only ing an on-going assault on Chesapeake Bay, and the with careful study of life forms that suffer minimal affects effect on the native blue crab populations is already – at present – from globalization, viz., marginal faunas of being measured. In the United States, invading ar- quite inaccessible environments. Two examples taken from syncarid crustaceans illustrate this point.
    [Show full text]
  • Crustaceans Topics in Biodiversity
    Topics in Biodiversity The Encyclopedia of Life is an unprecedented effort to gather scientific knowledge about all life on earth- multimedia, information, facts, and more. Learn more at eol.org. Crustaceans Authors: Simone Nunes Brandão, Zoologisches Museum Hamburg Jen Hammock, National Museum of Natural History, Smithsonian Institution Frank Ferrari, National Museum of Natural History, Smithsonian Institution Photo credit: Blue Crab (Callinectes sapidus) by Jeremy Thorpe, Flickr: EOL Images. CC BY-NC-SA Defining the crustacean The Latin root, crustaceus, "having a crust or shell," really doesn’t entirely narrow it down to crustaceans. They belong to the phylum Arthropoda, as do insects, arachnids, and many other groups; all arthropods have hard exoskeletons or shells, segmented bodies, and jointed limbs. Crustaceans are usually distinguishable from the other arthropods in several important ways, chiefly: Biramous appendages. Most crustaceans have appendages or limbs that are split into two, usually segmented, branches. Both branches originate on the same proximal segment. Larvae. Early in development, most crustaceans go through a series of larval stages, the first being the nauplius larva, in which only a few limbs are present, near the front on the body; crustaceans add their more posterior limbs as they grow and develop further. The nauplius larva is unique to Crustacea. Eyes. The early larval stages of crustaceans have a single, simple, median eye composed of three similar, closely opposed parts. This larval eye, or “naupliar eye,” often disappears later in development, but on some crustaceans (e.g., the branchiopod Triops) it is retained even after the adult compound eyes have developed. In all copepod crustaceans, this larval eye is retained throughout their development as the 1 only eye, although the three similar parts may separate and each become associated with their own cuticular lens.
    [Show full text]
  • A Review of Natural Values Within the 2013 Extension to the Tasmanian Wilderness World Heritage Area
    A review of natural values within the 2013 extension to the Tasmanian Wilderness World Heritage Area Nature Conservation Report 2017/6 Department of Primary Industries, Parks, Water and Environment Hobart A review of natural values within the 2013 extension to the Tasmanian Wilderness World Heritage Area Jayne Balmer, Jason Bradbury, Karen Richards, Tim Rudman, Micah Visoiu, Shannon Troy and Naomi Lawrence. Department of Primary Industries, Parks, Water and Environment Nature Conservation Report 2017/6, September 2017 This report was prepared under the direction of the Department of Primary Industries, Parks, Water and Environment (World Heritage Program). Australian Government funds were contributed to the project through the World Heritage Area program. The views and opinions expressed in this report are those of the authors and do not necessarily reflect those of the Tasmanian or Australian Governments. ISSN 1441-0680 Copyright 2017 Crown in right of State of Tasmania Apart from fair dealing for the purposes of private study, research, criticism or review, as permitted under the Copyright act, no part may be reproduced by any means without permission from the Department of Primary Industries, Parks, Water and Environment. Published by Natural Values Conservation Branch Department of Primary Industries, Parks, Water and Environment GPO Box 44 Hobart, Tasmania, 7001 Front Cover Photograph of Eucalyptus regnans tall forest in the Styx Valley: Rob Blakers Cite as: Balmer, J., Bradbury, J., Richards, K., Rudman, T., Visoiu, M., Troy, S. and Lawrence, N. 2017. A review of natural values within the 2013 extension to the Tasmanian Wilderness World Heritage Area. Nature Conservation Report 2017/6, Department of Primary Industries, Parks, Water and Environment, Hobart.
    [Show full text]
  • Visual Adaptations in Crustaceans: Chromatic, Developmental, and Temporal Aspects
    FAU Institutional Repository http://purl.fcla.edu/fau/fauir This paper was submitted by the faculty of FAU’s Harbor Branch Oceanographic Institute. Notice: ©2003 Springer‐Verlag. This manuscript is an author version with the final publication available at http://www.springerlink.com and may be cited as: Marshall, N. J., Cronin, T. W., & Frank, T. M. (2003). Visual Adaptations in Crustaceans: Chromatic, Developmental, and Temporal Aspects. In S. P. Collin & N. J. Marshall (Eds.), Sensory Processing in Aquatic Environments. (pp. 343‐372). Berlin: Springer‐Verlag. doi: 10.1007/978‐0‐387‐22628‐6_18 18 Visual Adaptations in Crustaceans: Chromatic, Developmental, and Temporal Aspects N. Justin Marshall, Thomas W. Cronin, and Tamara M. Frank Abstract Crustaceans possess a huge variety of body plans and inhabit most regions of Earth, specializing in the aquatic realm. Their diversity of form and living space has resulted in equally diverse eye designs. This chapter reviews the latest state of knowledge in crustacean vision concentrating on three areas: spectral sensitivities, ontogenetic development of spectral sen­ sitivity, and the temporal properties of photoreceptors from different environments. Visual ecology is a binding element of the chapter and within this framework the astonishing variety of stomatopod (mantis shrimp) spectral sensitivities and the environmental pressures molding them are examined in some detail. The quantity and spectral content of light changes dra­ matically with depth and water type and, as might be expected, many adaptations in crustacean photoreceptor design are related to this governing environmental factor. Spectral and temporal tuning may be more influenced by bioluminescence in the deep ocean, and the spectral quality of light at dawn and dusk is probably a critical feature in the visual worlds of many shallow-water crustaceans.
    [Show full text]
  • Anaspidesidae, a New Family for Syncarid Crustaceans Formerly Placed in Anaspididae Thomson, 1893
    © The Authors, 2017. Journal compilation © Australian Museum, Sydney, 2017 Records of the Australian Museum (2017) Vol. 69, issue number 4, pp. 257–258. ISSN 0067-1975 (print), ISSN 2201-4349 (online) https://doi.org/10.3853/j.2201-4349.69.2017.1680 urn:lsid:zoobank.org:pub:106B0A95-C8AC-49DB-BB0F-5930ADBBBA48 Shane T. Ahyong orcid.org/0000-0002-2820-4158 Miguel A. Alonso-Zarazaga orcid.org/0000-0002-6991-0980 Anaspidesidae, a new family for syncarid crustaceans formerly placed in Anaspididae Thomson, 1893 Shane T. Ahyong1* and Miguel A. Alonso-Zarazaga2 1 Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney NSW 2010, Australia, and School of Biological, Earth & Environmental Sciences, University of New South Wales NSW 2052, Australia [email protected] 2 Depto. de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales (CSIC), José Gutiérrez Abascal 2, E-28006 Madrid, Spain [email protected] Abstract. The anaspidacean syncarid shrimps of the genera Anaspides Thomson, 1894, Allanaspides Swain, Wilson, Hickman & Ong, 1970, and Paranaspides Smith, 1908, have long been placed in the family Anaspididae Thomson, 1893. Anaspididae Thomson, 1893, however, was formed on a homonymous type genus, Anaspis Thomson, 1893, preoccupied by Anaspis Geoffroy, 1762 (Insecta: Coleoptera), and is therefore invalid. Anaspididae is also a junior homonym of Anaspidinae Mulsant, 1856 (Coleoptera), and is likewise invalid. There being no synonyms available in place of Anaspididae, we establish a new family, Anaspidesidae, to accommodate taxa previously placed in Anaspididae. Keywords. Crustacea; Anaspidacea; Anaspididae; Anaspidinae; Tasmania; freshwater; nomenclature. Ahyong, Shane T., and Miguel A. Alonso-Zarazaga.
    [Show full text]
  • An Evolutionary Solution of Terrestrial Isopods to Cope with Low
    © 2017. Published by The Company of Biologists Ltd | Journal of Experimental Biology (2017) 220, 1563-1567 doi:10.1242/jeb.156661 SHORT COMMUNICATION An evolutionary solution of terrestrial isopods to cope with low atmospheric oxygen levels Terézia Horváthová*, Andrzej Antoł, Marcin Czarnoleski, Jan Kozłowski and Ulf Bauchinger ABSTRACT alternatively represent secondary adaptations to meet changing The evolution of current terrestrial life was founded by major waves of oxygen requirements in organisms subject to environmental land invasion coinciding with high atmospheric oxygen content. change. These waves were followed by periods with substantially reduced Here, we show that catch-up growth is probably a further example oxygen concentration and accompanied by the evolution of novel of such an evolutionary innovation. Switching from aquatic to air traits. Reproduction and development are limiting factors for conditions during development within the motherly brood pouch of Porcellio scaber evolutionary water–land transitions, and brood care has probably the terrestrial isopod relaxes oxygen limitations facilitated land invasion. Peracarid crustaceans provide parental care and facilitates accelerated growth under motherly protection. Our for their offspring by brooding the early stages within the motherly findings provide important insights into the role of oxygen in brood brood pouch, the marsupium. Terrestrial isopod progeny begin care in present-day terrestrial crustaceans. ontogenetic development within the marsupium in water, but conclude development within the marsupium in air. Our results for MATERIALS AND METHODS progeny growth until hatching from the marsupium provide evidence Experimental animals for the limiting effects of oxygen concentration and for a potentially Early development in terrestrial isopods occurs sequentially in adaptive solution.
    [Show full text]
  • GLASSWORMS: a LIVE OR FROZEN TREAT for EVEN the MOST FINICKY FISH Konrad Schmidt
    B 31 American Currents Vol. 40, No. 1 GLASSWORMS: A LIVE OR FROZEN TREAT FOR EVEN THE MOST FINICKY FISH Konrad Schmidt My first encounter with Glassworms aka Phantom Midge I was on one attempt to collect these Glassworms using a Larvae (Chaoborous spp.) was in the 1970s working in a trawl. On the old paper graph depth finder just after sunset, tropical fish store (Schmidt 1984). These bizarre one-half- the black bottom turned a gray and appeared to rise. Just inch insects are plankton and completely transparent. Un- before the reaching the surface at what we assumed was the der a microscope, fore and aft air bladders are visible and lower end of the thermocline, the band narrowed and turned serve dual roles: maintaining equilibrium and neutral buoy- black again. We deployed the trawl, but constantly and hap- ancy to suspend larvae throughout the water column. In the hazardly zigzagged up and down through the narrow layer. tail region, there is a structure that looks very much like a Around midnight, we did get “pulled over” by sheriff depu- fin (with rays) and functions as a rudder. The head contains ties with the Washington County Water Patrol. We thought large, conspicuous eyes and massive mouth parts which are we had “some explaining” to do, but all they were interested used to catch and eat their common prey Daphnia. Glass- in was our life jackets. After a few hours of effort we had a worms move erratically through the water by contorting couple of gallons of Glassworms. Most of these were frozen, and flexing their bodies and can for short periods evade fish but I brought some home alive.
    [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]
  • Synopsis of the Biological Data on the Loggerhead Sea Turtle Caretta Caretta (Linnaeus 1758)
    OF THE BI sTt1cAL HE LOGGERHEAD SEA TURTLE CAC-Err' CARETTA(LINNAEUS 1758) Fish and Wildlife Service U.S. Department of the Interior Biological Report This publication series of the Fish and Wildlife Service comprises reports on the results of research, developments in technology, and ecological surveys and inventories of effects of land-use changes on fishery and wildlife resources. They may include proceedings of workshops, technical conferences, or symposia; and interpretive bibliographies. They also include resource and wetland inventory maps. Copies of this publication may be obtained from the Publications Unit, U.S. Fish and Wildlife Service, Washington, DC 20240, or may be purchased from the National Technical Information Ser- vice (NTIS), 5285 Port Royal Road, Springfield, VA 22161. Library of Congress Cataloging-in-Publication Data Dodd, C. Kenneth. Synopsis of the biological data on the loggerhead sea turtle. (Biological report; 88(14) (May 1988)) Supt. of Docs. no. : I 49.89/2:88(14) Bibliography: p. 1. Loggerhead turtle. I. U.S. Fish and Wildlife Service. II. Title. III. Series: Biological Report (Washington, D.C.) ; 88-14. QL666.C536D63 1988 597.92 88-600121 This report may be cit,-;c1 as follows: Dodd, C. Kenneth, Jr. 1988. Synopsis of the biological data on the Loggerhead Sea Turtle Caretta caretta (Linnaeus 1758). U.S. Fish Wildl. Serv., Biol. Rep. 88(14). 110 pp. Biological Report 88(14) May 1988 Synopsis of the Biological Dataon the Loggerhead Sea Turtle Caretta caretta(Linnaeus 1758) by C. Kenneth Dodd, Jr. U.S. Fish and Wildlife Service National Ecology Research Center 412 N.E.
    [Show full text]