DOCSLIB.ORG

Revision of the Endemic Australian Genus Sancho (Amphipoda, Eusiridae)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Revision of the Endemic Australian Genus Sancho (Amphipoda, Eusiridae) JOURNAL OF CRUSTACEAN BIOLOGY, 21(1): 231–242, 2001 REVISION OF THE ENDEMIC AUSTRALIAN GENUS SANCHO (AMPHIPODA, EUSIRIDAE) J. K. Lowry and J. L. Barnard Division of Invertebrate Zoology, Australian Museum, 6 College Street, Sydney, 2010, NSW, Australia (e-mail: [email protected]) ABSTRACT Downloaded from https://academic.oup.com/jcb/article/21/1/231/2679983 by guest on 01 October 2021 The endemic Australian eusirid amphipod genus Sancho Stebbing, 1897, is revised based on new material. A neotype is established for Sancho platynotus Stebbing, 1897, which is redescribed, and the new species S. kuiteri is described. Members of Sancho are considered to be obligate commensals of sponges. Their depressed body form and entire telson may be an adaptation to their commensal life-style, but their cantilevered second gnathopods may indicate a phylogenetic relationship with the Eusirus-like members of the Eusiridae. In 1897 Stebbing described Sancho original description of Sancho. In this paper platynotus from Port Jackson, Australia. The we redescribe S. platynotus and describe the description and illustrations were brief, there new species Sancho kuiteri. Because the types was no habitat information, and the taxon was of S. platynotus are lost and S. platynotus is not placed in a family. Stebbing later (1906) the type species of the genus, we are estab- placed Sancho in the Calliopiidae. So did J. lishing a neotype. Sancho platynotus is a frag- L. Barnard (1969), who carefully considered ile species, and there were no complete spec- the close relationship between calliopiids and imens in Huggett’s collections. The neotype eusirids and commented specifically on the is therefore a nearly complete female. eusirid-like gnathopods of Sancho. Barnard Species of Sancho appear to be eusirid-like and Karaman (1991) amalgamated the Cal- amphipods which have become morphologi- liopiidae and Eusiridae and placed Sancho in cally adapted to living on sponges. The main the Eusiridae. They considered it to be a pe- differences between Sancho and other eusirid culiar genus in the family mainly because of taxa are the shape of the head, the sexually its depressed body and urosome. dimorphic second gnathopods, and the de- Before J. L. Barnard died in 1991, we were pressed body and urosome. The only seem- studying a new taxon from Port Jackson ingly similar taxon is the poorly described which appeared to be closely related to San- Choroes incisus Stebbing, 1888, which also cho platynotus. Barnard was never convinced has a depressed body and urosome, but the that Sancho belonged in the Eusiridae (= Cal- shape of the head and the dimorphic nature liopiidae) and was in favour of establishing of the gnathopods are unknown. According to a new family for S. platynotus and the new K. H. Barnard (1931), who had many speci- taxon. A major problem for us was that San- mens (males and females) available for study, cho platynotus had never been collected C. incisus also lives on sponges. Although J. again, and the original type material, placed L. Barnard was in favor of creating a new in the Copenhagen Museum, was lost. Finally, family for Sancho, it now seems better to re- after 101 years, Megan Huggett (Honours stu- tain Sancho in the Eusiridae until a thorough dent, University of New South Wales) col- revision of the family and its sister taxa is lected specimens of S. platynotus associated achieved. with the sponge Holopsamma laminaefavosa Material used in this study is lodged in the Carter, 1885, during a survey of amphipods Australian Museum, Sydney (AM). The fol- associated with sponges in Botany Bay. Study lowing abbreviations are used on the figures: of this new material from Botany Bay and the A, antenna; C, coxa; EP, epimeron; G, new taxon from Port Jackson has resolved gnathopod; H, head; LL, lower lip; MD, many of the problems associated with the mandible; MP, maxilliped; MPOP, maxilliped 231 232 JOURNAL OF CRUSTACEAN BIOLOGY, VOL. 21, NO. 1, 2001 Downloaded from https://academic.oup.com/jcb/article/21/1/231/2679983 by guest on 01 October 2021 Fig. 1. Sancho kuiteri, new species, holotype m, 4.1 mm, AM P40664, Botany Bay, New South Wales, Australia. outer plate; MPIP, maxilliped inner plate; Species Composition.—Sancho kuiteri, new MX, maxilla; P, pereiopod; PL, pleon; T, tel- species; S. platynotus Stebbing, 1897. son; U, uropod; UL, upper lip; UR, uro- somite; l, left; r, right. Remarks.—Sancho is apparently endemic to southeastern Australia. Species in the genus Eusiridae appear to be obligate commensals of sponges, and as an adaptation to this life-style they Sancho Stebbing, 1897 have dorsoventrally flattened bodies and de- Sancho Stebbing, 1897: 42.—Stebbing, 1906: 288.—J. L. pressed urosomes similar to other commen- Barnard, 1969: 179.—Barnard and Karaman, 1991: sals such as iciliids and maxillipiids, which 339. are also endemic to the Indo-West Pacific area. Type Species.—Sancho platynotus Stebbing, Species of Sancho have notched telsons 1897, by monotypy. similar to the calliopiid-like members of the Eusiridae, but Sancho platynotus, in particu- Diagnosis.—Body strongly depressed, with lar, has cantilevered gnathopods similar to the urosome flexed under pleon. Antenna 1 ac- eusirid-like members of the family. If these cessory flagellum present, 1-articulate. Man- cantilevered gnathopods are homologous then dible molar triturative. Lower lip without in- Sancho and Eusirus may have a common an- ner lobes. Maxilla 1 inner plate with two api- cestor. It is interesting that Eusirus antarcti- cal setae. Maxilla 2 with outer plate slightly cus Thomson, 1880 (sensu stricto), which to strongly broader than inner plate; inner lives in southern New Zealand, has a heavy plate without oblique setal row. Maxilliped body and broad legs like species of Sancho. with outer plate not enlarged. Gnathopod 2 sexually dimorphic, weakly to strongly can- Sancho kuiteri, new species tilevered in male. Uropod 3 with outer ramus Figs. 1–5 one-third to three-fourths length of inner ra- Type Material.—Holotype, m, 4.1 mm, AM P40664; mus. Telson entire or emarginate. Paratypes: f, 3.6 mm, P40665; m, 3.9 mm, P40666; f, LOWRY AND BARNARD: REVISION OF AMPHIPOD GENUS SANCHO 233 Downloaded from https://academic.oup.com/jcb/article/21/1/231/2679983 by guest on 01 October 2021 Fig. 2. Sancho kuiteri, new species, holotype m, 4.1 mm, AM P40664, f, 3.6 mm, AM P40665, Botany Bay, New South Wales, Australia. 4.1 mm, P40667; juvenile, P40668; m, P40670; 133 spec- ovigerous ff, AM P58135; Bare Island, Botany Bay, New imens, P40669; off Green Point, Watsons Bay, Port Jack- South Wales, Australia, 33°59.53′S 151°13.83′E, living son, New South Wales, Australia, 33°50.6′S 151°16.55′E, on the sponge Holopsamma laminaefavosa, 12 m, M. J. living on the sponge Holopsamma laminaefavosa (AM Huggett and R. De Nys, 13 August 1998. Z5090), 10 m, R. Kuiter, 12 September 1981. Additional Material.—4 mm, 12 ff and juveniles, AM Description.—Based on holotype male, 4.1 P57935; 1 m, 2 juveniles, AM P57938; 2 ff, AM P58133; mm. Head and body white. Head longer than 7 mm, 12 ff and juveniles, AM P58134; 5 mm, 14 mostly deep; lateral cephalic lobe poorly developed; 234 JOURNAL OF CRUSTACEAN BIOLOGY, VOL. 21, NO. 1, 2001 Downloaded from https://academic.oup.com/jcb/article/21/1/231/2679983 by guest on 01 October 2021 Fig. 3. Sancho kuiteri, new species, holotype m, 4.1 mm, AM P40664, f, 3.6 mm, AM P40665, Botany Bay, New South Wales, Australia. Scale bars = 0.1 mm. anteroventral margin rounded, anteroventral cal, left with 4 serrations, right with 2 serra- corner rounded; rostrum present, moderate tions; accessory setal row, left with 2 serrate length; eyes medium-sized, oval. Antenna 1 setae, right with 1 serrate seta; molars colum- long, about 0.6 × body, 1.5 × as long as an- nar, fully triturating, each with 4 long pap- tenna 2; peduncular article 1 longer than (2 pose setae; palp well developed, article 2 ×) article 2; article 2 longer than (1.6 ×) ar- long, 1 × article 3; article 3 long. Lower lip ticle 3; article 3 shorter than (0.3 ×) article inner lobes absent. Maxilla 1 inner plate 1; accessory flagellum present, minute, 1-ar- small, subovate, with 2 apical setae; outer ticulate; flagellum 36-articulate, with sparse plate, with 11 strong setal-teeth; palp 2-ar- setae along posterior margin of most articles; ticulate with about 8 apical or apicomedial se- calceoli absent. Antenna 2 peduncular article tae. Maxilla 2 inner and outer plates broad; 3 short, length 0.8 × breadth, without flange inner plate with apical slender setae, without on anterolateral margin; article 4 long, 1.7 × medial slender setae, without oblique row of breadth; article 5 long, 4.5 × breadth; flagel- slender setae; outer plate with apical slender lum shorter than (0.8 ×) peduncle, 21-articu- setae, without medial slender setae. Maxil- late; calceoli absent. liped inner plate large, nearly reaching end of Upper lip separate, not produced. merus, subrectangular, without nodular setae, Mandibles incisors symmetrical, left and right without apicomedial setae, oblique setal row with 4 serrations; lacinia mobilis asymmetri- with 14 long plumose setae; outer plate sub- LOWRY AND BARNARD: REVISION OF AMPHIPOD GENUS SANCHO 235 Downloaded from https://academic.oup.com/jcb/article/21/1/231/2679983 by guest on 01 October 2021 Fig. 4. Sancho kuiteri, new species, holotype m, 4.1 mm, AM P40664, f, 3.6 mm, AM P40665, Botany Bay, New South Wales, Australia. Scale bars = 0.1 mm. ovate, reaching to end of merus, with 6 pap- breadth, without setose inner margin; dacty- pose setae along apical margin, without ro- lus cone-like, unguis absent.
Load more

Recommended publications
  • Effects of Temperature on Seta Elongation in Atrichum Undulatum^ 2- 3
    EFFECTS OF TEMPERATURE ON SETA ELONGATION IN ATRICHUM UNDULATUM^ 2- 3 DENNIS WM. STEVENSON4, JAMES R. RASTORFER, AND RAY E. SHOWMAN Department of Botany, The Ohio State University, Columbus, Ohio 43210 ABSTRACT Field-collected gametophytes of Atrichum undulatum were placed in two growth chambers which were maintained at the same light intensity and light period, but at two different temperature regimes. After sporophyte development, differences in seta lengths were observed. Measurements of cell lengths revealed that attached setae grown in the high-temperature regime (12°-22°C) were longer than those grown in a low-temperature regime (3°-12°C), as a result of both more cell divisions and a larger average cell length. Thus, temperature appeared to influence both cell division and cell elongation in the setae of Atrichum undulatum. INTRODUCTION Sporophytes of most liverworts and mosses (Bryophyta) consist of a basal foot attached to the gametophyte and a seta or stalk, which supports a spore-bearing capsule at its apex. Lengths of setae at sporophyte maturity differ among species, varying from a minute structure to a conspicuous organ which may exceed 5 cm (Watson, 1964). Setae of the Common Hair-Cap Moss (Polytrichum commune) are reported to vary from 6 to 12 cm in length (Welch, 1957), but unfortunately it is not clearly understood whether these differences are caused by genetic factors or environmental factors or both. A few studies have suggested that seta elonga- tion can apparently be influenced by environmental factors (e.g. temperature; light intensity; day length), and that there may be interactions of internal plant factors (e.g.
    [Show full text]
  • The Malacostracan Fauna of Two Arctic Fjords (West Spitsbergen): the Diversity And
    + Models OCEANO-95; No. of Pages 24 Oceanologia (2017) xxx, xxx—xxx Available online at www.sciencedirect.com ScienceDirect j ournal homepage: www.journals.elsevier.com/oceanologia/ ORIGINAL RESEARCH ARTICLE The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components Joanna Legeżyńska *, Maria Włodarska-Kowalczuk, Marta Gluchowska, Mateusz Ormańczyk, Monika Kędra, Jan Marcin Węsławski Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland Received 14 July 2016; accepted 6 January 2017 KEYWORDS Summary This study examines the performance of pelagic and benthic Malacostraca in two Malacostraca; glacial fjords of west Spitsbergen: Kongsfjorden, strongly influenced by warm Atlantic waters, Arctic; and Hornsund which, because of the strong impact of the cold Sørkapp Current, has more of Svalbard; an Arctic character. The material was collected during 12 summer expeditions organized from Diversity; 1997 to 2013. In all, 24 pelagic and 116 benthic taxa were recorded, most of them widely Distribution distributed Arctic-boreal species. The advection of different water masses from the shelf had a direct impact on the structure of the pelagic Malacostraca communities, resulting in the clear dominance of the sub-arctic hyperiid amphipod Themisto abyssorum in Kongsfjorden and the great abundance of Decapoda larvae in Hornsund. The taxonomic, functional and size compositions of the benthic malacostracan assemblages varied between the two fjords, and also between the glacier-proximate inner bays and the main fjord basins, as a result of the varying dominance patterns of the same assemblage of species. There was a significant drop in species richness in the strongly disturbed glacial bays of both fjords, but only in Hornsund was this accompanied by a significant decrease in density and diversity, probably due to greater isolation and poorer quality of sediment organic matter in its innermost basin.
    [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]
  • Biodiversity and Trophic Ecology of Hydrothermal Vent Fauna Associated with Tubeworm Assemblages on the Juan De Fuca Ridge
    Biogeosciences, 15, 2629–2647, 2018 https://doi.org/10.5194/bg-15-2629-2018 © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. Biodiversity and trophic ecology of hydrothermal vent fauna associated with tubeworm assemblages on the Juan de Fuca Ridge Yann Lelièvre1,2, Jozée Sarrazin1, Julien Marticorena1, Gauthier Schaal3, Thomas Day1, Pierre Legendre2, Stéphane Hourdez4,5, and Marjolaine Matabos1 1Ifremer, Centre de Bretagne, REM/EEP, Laboratoire Environnement Profond, 29280 Plouzané, France 2Département de sciences biologiques, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, H3C 3J7, Canada 3Laboratoire des Sciences de l’Environnement Marin (LEMAR), UMR 6539 9 CNRS/UBO/IRD/Ifremer, BP 70, 29280, Plouzané, France 4Sorbonne Université, UMR7144, Station Biologique de Roscoff, 29680 Roscoff, France 5CNRS, UMR7144, Station Biologique de Roscoff, 29680 Roscoff, France Correspondence: Yann Lelièvre ([email protected]) Received: 3 October 2017 – Discussion started: 12 October 2017 Revised: 29 March 2018 – Accepted: 7 April 2018 – Published: 4 May 2018 Abstract. Hydrothermal vent sites along the Juan de Fuca community structuring. Vent food webs did not appear to be Ridge in the north-east Pacific host dense populations of organised through predator–prey relationships. For example, Ridgeia piscesae tubeworms that promote habitat hetero- although trophic structure complexity increased with ecolog- geneity and local diversity. A detailed description of the ical successional stages, showing a higher number of preda- biodiversity and community structure is needed to help un- tors in the last stages, the food web structure itself did not derstand the ecological processes that underlie the distribu- change across assemblages.
    [Show full text]
  • Faunistic and Biological Notes on Marine Invertebrates Iii
    Biologiske Meddelelser udgivet af Det Kongelige Danske Videnskabernes Selskab Bind 23, no. 1 Biol. Medd. Dan. Vid. Selsk. 23, no. 1 (1956) FAUNISTIC AND BIOLOGICAL NOTES ON MARINE INVERTEBRATES III. • The Reproduction and Larval Development of some Polychaetes from the Isefjord, with some Faunistic Notes. B Y • ERIK RASMUSSEN (Report from the Isefjord Laboratory No. 3) København 1956 i kommission hos Ejnar Munksgaard D et Kongelige Danske V idenskabernes Selskab udgiver følgende publikationsrækker : L'Académie Royale des Sciences et des Lettres de Danemark publie les séries suivantes: Bibliograûsk forkortelse Ahréi/iation bibliographique Oversigt over selskabets virksomhed (8°) Overs. Dan. Vid. Selsk. (Annuaire) Historisk-filologiske Meddelelser (8°) Hist. Filol. Medd. Dan. Vid. Selsk. -Historisk-filologiske Skrifter (4°) Hist. Filol. Skr. Dan. Vid. Selsk. (Histoire et Philologie) Arkæologisk-kunsthistoriske Meddelelser (8°) Arkæol. Kunsthist. Medd. Dan. Vid. Selsk. Arkæologisk-kunsthistoriske Skrifter (4°) Arkæol. Kunsthist. Skr. Dan. Vid. (Archéologie et Histoire de I’Art} Selsk. Filosofiske Meddelelser (8°) Filos. Medd. Dan. Vid. Selsk. (Philosophie) Matematisk-fysiske Meddelelser (8°) Mat. Fys. Medd. Dan. Vid. Selsk. (Mathémaliqnes et Physique) Biologiske Meddelelser (8°) Biol. Medd. Dan. Vid. Selsk. Biologiske Skrifter (4®) Biol. Skr. Dan. Vid. Selsk. (Biologie) Selskabets sekretariat og postadresse: Dantes plads 5, København V. L'adresse poslale du secrétariat de VAcadémie est: Det Kongelige Danske Videnskabernes Selskab, Dantes plads 5, København V, Danmark. Selskabets kommissionær: Ejnar Munksgaard’s forlag, Nørregade 6, København K. Les publications sont en vente chez le commissionnaire: Ejnar Münksgaard, éditeur. Nørregade 6, København K, Danmark. Biologiske Meddelelser udgivet af Det Kongelige Danske Videnskabernes Selskab Bind 23, no. 1 Biol. Medd. Dan.
    [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]
  • ADHESIVE FORCE of a SINGLE GECKO SETA a Thesis Presented
    ADHESIVE FORCE OF A SINGLE GECKO SETA A Thesis Presented to The Graduate Faculty of The University of Akron In Partial Fulfillment of the Requirements for the Degree Master of Science Lan Yu May, 2018 ADHESIVE FORCE OF A SINGLE GECKO SETA Lan Yu Thesis Approved: Accepted: Advisor Dean of College Dr. Ali Dhinojwala Dr. Eric J. Amis Committee Member Dean of the Graduate School Dr. Hunter King Dr. Chand K. Midha Department Chair Date Dr. Coleen Pugh ii ABSTRACT The gecko’s adhesion system uses arrays of setae to achieve strong and repeatable adhesion. Observation of the toe pad structure shows that shorter setae are generally proximal while longer ones distal [39]. We hypothesized that a seta of longer length would generate higher adhesive force, as long and slender setae have lower bending modulus, and therefore making it easier to contact spatulae with the surface. By following previous single seta experiments [11], we first measured the shear force generated by an isolated gecko seta using Nano Bionix. We also tested the length hypothesis by measuring the shear adhesion ability of single seta of varying lengths ranging from 80 to 140µm, which was taken from different parts of the gecko toe pad from distal to proximal. Measurements gave the result of shear forces of a single seta in the range of 80 to 250µN and an average of 136.81µN. This number is lower than the average value 194µN in previous studies, which is tested under a preload of 15µN [11]. In addition, results from 12 individual setae suggested that shear adhesion force of a single seta is independent of setal length and dependent on setal diameter.
    [Show full text]
  • Distribución De Los Anfípodos (Crustacea, Malacostraca, Peracarida) De Los Subórdenes Gammaridea, Caprellidea E Hyperiidea, Presentes En El Archipiélago Cubano
    Distribución de los anfípodos (crustacea, malacostraca, peracarida) de los subórdenes gammaridea, caprellidea e hyperiidea, presentes en el archipiélago cubano Item Type Journal Contribution Authors Ortiz, M.; Lalana, R. Citation Revista de Investigaciones Marinas, 31 (2), p. 75-90 Download date 27/09/2021 06:30:40 Item License http://creativecommons.org/licenses/by-nc/3.0/ Link to Item http://hdl.handle.net/1834/4520 Rev. Invest. Mar. 31(2):75-90, 2010 DISTRIBUCIÓN DE LOS ANFÍPODOS (CRUSTACEA, MALACOSTRACA, PERACARIDA) DE LOS SUBÓRDENES GAMMARIDEA, CAPRELLIDEA E HYPERIIDEA, PRESENTES EN EL ARCHIPIÉLAGO CUBANO Manuel Ortiz y Rogelio Lalana Centro de Investigaciones Marinas, Universidad de La Habana, Calle 16 No. 114, Playa, CP 11300, Ciudad Habana, Cuba Autor correspondiente: Email: [email protected] RESUMEN Se presenta la distribución espacial y vertical de las 152 especies (37 familias y 83 géneros) de los anfípodos gammarídeos; de las 11 especies (5 familias y 10 géneros) de caprélideos, así como las 36 especies (14 familias y 22 géneros) de hiperídeos, que se han registrado en el Archipiélago Cubano, desde 1970. Cada especie ha sido situada en una tabla que se corresponde con las ecorregiones marinas de Cuba, donde además se ofrece el número de veces que dicha especie ha sido colectada en cada localidad, así como el tipo de sustrato. Palabras clave: distribución de especies; Amphipoda; ASW, Cuba. ABSTRACT The spatial and vertical distribution of the 152 species (37 families and 83 genera) of the gammaridean amphipods; the 11 species (five families, 10 genera)of the caprellidean amphipods, as well as of the 36 species (14 families and 22 genera) of Hyperiidean amphipod crustaceans recorded for the Cuban waters, from 1970, are given.
    [Show full text]
  • Deep-Sea Life Issue 14, January 2020 Cruise News E/V Nautilus Telepresence Exploration of the U.S
    Deep-Sea Life Issue 14, January 2020 Welcome to the 14th edition of Deep-Sea Life (a little later than anticipated… such is life). As always there is bound to be something in here for everyone. Illustrated by stunning photography throughout, learn about the deep-water canyons of Lebanon, remote Pacific Island seamounts, deep coral habitats of the Caribbean Sea, Gulf of Mexico, Southeast USA and the North Atlantic (with good, bad and ugly news), first trials of BioCam 3D imaging technology (very clever stuff), new deep pelagic and benthic discoveries from the Bahamas, high-risk explorations under ice in the Arctic (with a spot of astrobiology thrown in), deep-sea fauna sensitivity assessments happening in the UK and a new photo ID guide for mesopelagic fish. Read about new projects to study unexplored areas of the Mid-Atlantic Ridge and Azores Plateau, plans to develop a water-column exploration programme, and assessment of effects of ice shelf collapse on faunal assemblages in the Antarctic. You may also be interested in ongoing projects to address and respond to governance issues and marine conservation. It’s all here folks! There are also reports from past meetings and workshops related to deep seabed mining, deep-water corals, deep-water sharks and rays and information about upcoming events in 2020. Glance over the many interesting new papers for 2019 you may have missed, the scientist profiles, job and publishing opportunities and the wanted section – please help your colleagues if you can. There are brief updates from the Deep- Ocean Stewardship Initiative and for the deep-sea ecologists amongst you, do browse the Deep-Sea Biology Society president’s letter.
    [Show full text]
  • Benthic Macrofaunal and Megafaunal Distribution on the Canadian Beaufort Shelf and Slope
    Benthic Macrofaunal and Megafaunal Distribution on the Canadian Beaufort Shelf and Slope by Jessica Nephin B.Sc., University of British Columbia, 2009 A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE in the School of Earth and Ocean Sciences c Jessica Nephin, 2014 University of Victoria All rights reserved. This thesis may not be reproduced in whole or in part, by photocopying or other means, without the permission of the author. ii Benthic Macrofaunal and Megafaunal Distribution on the Canadian Beaufort Shelf and Slope by Jessica Nephin B.Sc., University of British Columbia, 2009 Supervisory Committee Dr. S. Kim Juniper School of Earth and Ocean Sciences, Department of Biology Supervisor Dr. Verena Tunnicliffe School of Earth and Ocean Sciences, Department of Biology Departmental Member Dr. Julia Baum Department of Biology Outside Member Dr. Philippe Archambault Université du Québec à Rimouski Additional Member iii Supervisory Committee Dr. S. Kim Juniper (School of Earth and Ocean Sciences, Department of Biology) Supervisor Dr. Verena Tunnicliffe (School of Earth and Ocean Sciences, Department of Biology) Departmental Member Dr. Julia Baum (Department of Biology) Outside Member Dr. Philippe Archambault (Université du Québec à Rimouski) Additional Member ABSTRACT The Arctic region has experienced the largest degree of anthropogenic warming, causing rapid, yet variable sea-ice loss. The effects of this warming on the Canadian Beaufort Shelf have led to a longer ice-free season which has assisted the expansion of northern development, mainly in the oil and gas sector. Both these direct and indirect effects of climate change will likely impact the marine ecosystem of this region, in which benthic fauna play a key ecological role.
    [Show full text]
  • Archiv Für Naturgeschichte
    © Biodiversity Heritage Library, http://www.biodiversitylibrary.org/; www.zobodat.at Bericht über die Leistuugen in der Carcinologie wälirend des Jahres 1894. Von Dr. F. Hilgendorf und Dr. J. Vosseier*). Verzeichniss der Publicationen. Albert I,, Prince de Monaco: Sur les premieres campagnes de la princesse Alice. Compt. rend. Ac. Sc. Paris T. CXX. — Eine 2 m tief ins Meer eingesenkte Lampe lockt in kurzer Zeit ganze Wolken kleiner Kruster herbei. F. Albrecht, L. K., Ziornow u. a. Primitiae faunae Mosquensis. Congres intern, d'anthrop., arch. et zool. 1892 (Moscou), Materiaux i-eunis etc. 1. partie, Suppl. Nr. 16, 137 S.; Crust. p. 121 — 5. Mos- cou 1893. — 122 Entom. u. 14 Malacostraca, Alcock, A. Natural bist, notes from „Investigator" (Ser. 2) Nr. 1. (continued). (Vergl. Ber. 91, 92, 93 unter Wood-Mason, W.- M. u. Alcock, Alcock). Ann. Mag. (6) XIII p. 225-45, 321—34, 400—411. — Behandelt Deep-sea dredging 1890/91. Spec. Nr. 58 bis 99. Farn. Nematocarcinidae, Honiar., Eryont. (IXyl.), Parapagur., Galath., Inachidae, Cancridae (Platypilumyins)^ Ocypod. (Psopheticus), Leucos. {Ci/monomops), Homolidae. Stomatopoda (2 Sp.), Amphi- poda (l Sp., Farn. Stegoceph., Xyl). 28 neue Sp. od. Variet. Sperma- tozoen V. Munida besclir. p. 324. Stridulationsapp. bei Psophet. Rudim. Augen bei Cymon. u. Andania. Alcock, A. and A. R. Audeison (1). Nat. bist, notes from „Investigator" (2. Ser.) No. 14: An account of a recent coli, of deep sea Crustacea from the Bay of Bengal and Laccadive Sea. Journ. Asiat, soc. of Bengal, Vol. 63 part. IL No. 3. p. 141—185. Tfl. IX. *) Im Allgemeinen sind die Arbeiten über höhere Krebse von Hilgendorf, die über niedere von Vosseier besprochen worden, lieber etwaige Ausnahmen giebt die Unterzeichnung der betreif.
    [Show full text]
  • Plant Reproduction
    AccessScience from McGraw-Hill Education Page 1 of 10 www.accessscience.com Plant reproduction Contributed by: Scott D. Russell Publication year: 2014 The formation of a new plant that is either an exact copy or recombination of the genetic makeup of its parents. There are three types of plant reproduction considered here: (1) vegetative reproduction, in which a vegetative organ forms a clone of the parent; (2) asexual reproduction, in which reproductive components undergo a nonsexual form of production of offspring without genetic rearrangement, also known as apomixis; and (3) sexual reproduction, in which meiosis (reduction division) leads to formation of male and female gametes that combine through syngamy (union of gametes) to produce offspring. See also: PLANT; PLANT PHYSIOLOGY. Vegetative reproduction Unlike animals, plants may be readily stimulated to produce identical copies of themselves through cloning. In animals, only a few cells, which are regarded as stem cells, are capable of generating cell lineages, organs, or new organisms. In contrast, plants generate or produce stem cells from many plant cells of the root, stem, or leaf that are not part of an obvious generative lineage—a characteristic that has been known as totipotency, or the general ability of a single cell to regenerate a whole new plant. This ability to establish new plants from one or more cells is the foundation of plant biotechnology. In biotechnology, a single cell may be used to regenerate new organisms that may or may not genetically differ from the original organism. If it is identical to the parent, it is a clone; however, if this plant has been altered through molecular biology, it is known as a genetically modified organism (GMO).
    [Show full text]