DOCSLIB.ORG

Notodiaptomus Caperatus, a New Calanoid Copepod from Phreatic

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Notodiaptomus Caperatus, a New Calanoid Copepod from Phreatic Bijdragen lot de Dierkunde, 49 (2): 219-226 1979 Amsterdam Expeditions to the West Indian Islands, Report 5. Notodiaptomus caperatus, a new calanoid copepod from phreatic groundwater in Barbuda (Crustacea: Diaptomidae) by Thomas E. Bowman Department of Invertebrate Zoology, Smithsonian Institution, Washington, DC 20560, U.S.A. Abstract Description. — Female: Length 1.6-1.7 mm. In dorsal view body widest at posterior from well in is Notodiaptomus caperatus n. sp., a Barbuda, cephalosome and pediger 1, gradually narrowing described and illustrated. It is the first diaptomid from the 4 and 5 5 Lesser Antilles and the first West Indian diaptomid having posteriorly. Pedigers separate. Pediger affinities with South American species. produced into small wings; left wing directed slightly obliquely, armed with 2 conical spines; right wing directed nearly laterad, armed with 2 INTRODUCTION conical spines. Urosome 2-merous, most or all of 2nd segment Recently Dr. Jan H. Stock (Zoologisch Museum, telescoped into genital segment. Genital segment University of Amsterdam) sent to me for study a 1.5 as of anterior nearly X long as rest urosome; sample of calanoid copepods that he had collected part expanded laterally into lobe on either side; in phreatic groundwaters of Barbuda, the north- with right lobe steeper sides, bearing conical spine easternmost of the Leeward Islands of the Lesser at summit; left lobe with unarmed summit, but Antilles. The copepods proved to be the new with conical spine at posterior base. In lateral view diaptomid described below, the first from the genital segment produced into posteroventral Lesser Antilles. pouchlike protuberance, anterior to which are several vertical folds. Caudal ramus symmetrical, TAXONOMIC PART half slightly more than as wide as long. Antenna 1 reaching slightly beyond caudal rami; Notodiaptomus Antenna caperatus n. sp. segments 11-21 each with 1 seta. 2 with 2-4. Figs. inner and outer lobes of endopod with 9 and 7 setae respectively. Maxilliped with lobes of 1st Material examined. — Sta. 78/19, of University basipod well developed; 4th lobe with only 3 Amsterdam Expeditions to the West Indian Islands. Barbuda, and of setae row spinules on distal margin. Guava Farm, S.E. of Codrington (17°37'39"N6l°48'51"W), 1-4 with normal of (fig. 1), from round, almost covered well, water table at Legs armature spines and of water 0.75 3 m, depth m, chlorinity 1400 mg/1, leg. 2 with cuticular setae. Leg triangular lobe on H. J. Stock, 9 April 1978: 30 $ £ (holotype in Zoologisch posterior surface of 2nd Museum Amsterdam endopod segment. (ZMA), coll. no. ZMA Co. 102.655a; 1st ZMA Co. 10 Leg 5, with 19 paratypes, 102.655b; paratypes in United basipod prominent posterior States National DC coll. Museum, Washington (USNM) no. conical spine; 2nd basipod with short lateral seta. USNM 172318; 12 9 9 (10 ZMA Co. paratypes, 102.655c; First exopod segment 2 X as long as wide. Second 2 paratypes, USNM 172318); 45 copepodids of various without lateral claw stages (ZMA Co. 102.655d). exopod segment seta; mod- armed middle erately stout, on parts of both mar- 4 in *) Report no. appeared Verslagen en technische gege- with gins close-set spinules. Third exopod segment vens, Instituut voor Taxonomische Zoologie (Zoologisch Universiteit 20. slightly longer than medial seta to Museum), van Amsterdam, no. wide; fused Downloaded from Brill.com10/02/2021 03:16:23PM via free access 220 TH. E. BOWMAN - NOTODIAPTOMUS FROM BARBUDA Fig. 1. Map of Barbuda (from Russell & McIntire, 1966) showing the location of station 78/19 (indicated by a star), where collected. Notodiaptomus caperatus n. sp. was Downloaded from Brill.com10/02/2021 03:16:23PM via free access BIJDRAGEN TOT DE DIERKUNDE, 49 (2) - 1979 221 2. and left Fig. Notodiaptomus caperatus n. sp.: a, , dorsal; b, pediger 5 urosome, side; c, same, light side; d, 5 and of same, dorsal; e, , lateral;f, pediger urosome, dorsal; g, right wing of pediger 5, lateral; h, left wing pediger 5, lateral; i, antenna 1, segments 11-19. Downloaded from Brill.com10/02/2021 03:16:23PM via free access 222 TH. E. BOWMAN - NOTODIAPTOMUS FROM BARBUDA than of lateral — From Latin segment at base, more 2 X length Etymology. the caperatus seta. Endopod reaching beyond middle of 1st meaning wrinkled, referring to the folds on the 2nd exopod segment, 2-merous; segment longer female genital segment. with than 1st, distal margin oblique, armed row of fine setae. Relationships. — The Barbudan diap- tomid is provisionally assigned to the South Amer- in Male: Length 1.4-1.5 mm. Prosome shape as ican genus Notodiaptomus Kiefer, 1936, which of 5 the female. Right posterior corner pediger corresponds to nordestinus group of Wright left rounded; corner slightly angular; both corners (1935). The limits of South American diaptomid armed with terminal knob have been established and spinule-tipped having genera not firmly, setule dorsal it. Genital future studies alter the to segment asymmetrical, revisionary may generic with higher bulge on left side bearing postero- assignment of the Barbudan species. dorsal Posterior of curved to As with other N. be seta. part urosome diaptomids, caperatus may right. identified by a combination of distinguishing Right antenna 1 with spines on segments 8, 10, characters rather than by one or two characters. 11, 12, 13, 15, and 16. Spines on segments 10 The shape and armature of pediger 5 and the the in both and 11 subparallel to axis of antenna, those of genital segment, armature of antenna 1 and 16 that of and the of in both segment 12 especially quite small, sexes, structure leg 5 sexes, with incised taken will N. segment 13 suberect, large, slightly together, distinguish caperatus from tip. Segment 23 with strong recurved spinous other diaptomids. Perhaps the most striking char- than half of acteristics the wrinkled in the process more length segment. are genital segment with and and inner Right leg 5, 1st basipod moderately devel- female, the shape denticulate mar- in oped sensillum-bearing process. Second basipod gin of the distal process of the left leg 5 exopod medial with the male. about 1.5 X longer than 1st; margin cuticular thickening at midlength; distomedial part of posterior surface with crescentic patch of fine hairs. Second exopod segment about 1.5 X longer HABITAT with than 1st and 1.6 X longer than wide, H. rounded knob at base medially; lateral spine sub- Barbuda is "hollow as Swiss cheese" (J. Stock, in has terminal, more than half length of segment; litt.) and substantial underground water, claw third than but terminal nearly a longer exopod, no surface streams. Rainfall averages nearly arched with with recorded maximum gently recurved tip. Endopod 2- 100 cm/year, a of nearly of 1st 670 cm in 1913 and a minimum of about 55 cm merous, not quite reaching midlength armed is within 6 exopod segment; apical margin oblique, in 1930. The water table high, m of the with row of setules. surface on practically all lowland parts of the Left leg 5 slightly more slender than right, island. Two of the major wells provide more than reaching about midlength of 1st exopod segment 300,000 and 94,000 1/day (data from Martin- of right leg. First basipod about 1/4 longer than Kaye, 1956). The water is rather saline; Martin- 2nd. Exopod with widely separated proximal and Kaye (1956) gives measurements for salinity and distal pads. Proximal pad slightly smaller than between 352 2865 ppm (= mg/1) for the medial wells. bodies of distal, bilobed. Distal process subconical, major Larger underground water and denticulate in distal surface exist in number of but of margin nearly straight a caves, none lateral with contained part, margin bend near midlength. those sampled calanoids. medial Some Proximal process straight, slender, pointed, diaptomids prefer small, temporary bodies with minute margin a few spinules. of water, e.g. Hemidiaptomus amblyodon (Maren- Endopod reaching base of distal pad, becoming zeller) (see Dussart, 1967: 108, who terms such narrower I not slightly distally; apex slightly oblique, species "telmatoplanktonic"). However, am armed with of slender other row setules. aware of any diaptomid known only from Downloaded from Brill.com10/02/2021 03:16:23PM via free access - BIJDRAGEN TOT DE DIERKUNDE, 49 (2) 1979 223 10-16; b, d, Fig. 3. Notodiaptomus caperatus n. sp.: a, right antenna 1, segments same, segment 23; c, antenna 2; mandibularpalp; e, maxilliped, 1st basipod; f, leg 1; g, leg 2. Downloaded from Brill.com10/02/2021 03:16:23PM via free access 224 TH. E. BOWMAN - NOTODIAPTOMUS FROM BARBUDA 4. of lateral; Fig. Notodiaptomus caperatus n. sp.: a, leg 4; b, leg 5, posterior; b', endopod same, anterior; c, leg 5, 2nd and d, leg 5, posterior; e, left leg 5, anterior; f, right leg 5, basipod, 1st exopod, endopod, anterior. Downloaded from Brill.com10/02/2021 03:16:23PM via free access BIJDRAGEN TOT DE DIERKUNDE, 49 (2) - 1979 225 phreatic groundwater. C. B. Wilson (1936) re- Until now, no diaptomids have been reported from Herrick and the Lesser and the of ported Diaptomus albuquerquensis Antilles, presence a diap- tomid is that D. novamexicanus Herrick from underground on Barbuda remarkable, considering waters of Yucatan, but in open-air cenotes. Only the Amsterdam Expeditions sampled 580 stations one described diaptomid, the blind unpigmented on 29 islands for stygobionts and obtained cala- from Cueva noids 16 In Diaptomus cokeri Osorio-Tafall, 1942, only at 1 of the stations on Barbuda. Chica and Cueva de los Sabinos, San Luis Potosi contrast to the other West Indian diaptomids, N. but has affinities with South rather State, Mexico, appears to be a true troglobite, caperatus American least live than at some epigean diaptomids are able to North American species.
Load more

Recommended publications
  • Copépodos (Crustacea: Hexanauplia) Continentales De Colombia: Revisión Y Adiciones Al Inventario
    DOI: 10.21068/c2019.v20n01a04 Gaviria & Aranguren-Riaño Continental copepods (Crustacea: Hexanauplia) of Colombia: revision and additions to the inventory Copépodos (Crustacea: Hexanauplia) continentales de Colombia: revisión y adiciones al inventario Santiago Gaviria and Nelson Aranguren-Riaño Abstract We present the compilation of published and unpublished records of continental copepods of Colombia, as well as personal observations by the authors, yielding an additional list of 52 species and subspecies (7 calanoids, 20 cyclopoids, 25 harpacticoids). In addition to our former inventory (2007) of 69 species, the total number now reaches 121 taxa, increasing by 75 % the known number of continental copepods. Freshwater taxa increased in 15 species and subspecies. The number of brackish species (and marine species collected in brackish environments), recorded from coastal lagoons and temporal offshore ponds reached 39 species and subspecies. Thirteen taxa with locus typicus in Colombia have been described since 2007. Between 2007 and 2018, thirty-nine departmental records were made, and 43 new habitat records were reported (not including the species recorded as new for the country). Parasitic copepods of fish reached six species. However, the number of species is expected to increase with the survey of poorly studied regions like the Amazon and the Eastern Plains, and habitats like groundwater, benthos of lakes and ponds, semiterrestrial environments and additional coastal lagoons. Keywords. Biodiversity. Geographic distribution. Meiobenthos. Neotropical region. Zooplankton. Resumen Como resultado de la compilación de datos publicados y no publicados de copépodos continentales de Colombia, así como de observaciones personales de los autores, se estableció una lista adicional de 52 especies y subespecies (7 calanoideos, 20 cyclopoideos, 25 harpacticoideos).
    [Show full text]
  • Copépodos Notodiaptomus Sp. Kiefer (Crustacea, Calanoida) Naturalmente Infectados Com Metacestódeos No Reservatório Do Juqueri, São Paulo, Brasil
    Copépodos Notodiaptomus sp. Kiefer (Crustacea, Calanoida) naturalmente infectados com metacestódeos no reservatório do Juqueri, São Paulo, Brasil Madi, R.R. et al. Biota Neotrop. 2011, 11(2): 179-182. On line version of this paper is available from: http://www.biotaneotropica.org.br/v11n2/en/abstract?article+bn03511022011 A versão on-line completa deste artigo está disponível em: http://www.biotaneotropica.org.br/v11n2/pt/abstract?article+bn03511022011 Received/ Recebido em 17/03/2010 - Revised/ Versão reformulada recebida em 30/05/2011 - Accepted/ Publicado em 17/06/2011 ISSN 1676-0603 (on-line) Biota Neotropica is an electronic, peer-reviewed journal edited by the Program BIOTA/FAPESP: The Virtual Institute of Biodiversity. This journal’s aim is to disseminate the results of original research work, associated or not to the program, concerned with characterization, conservation and sustainable use of biodiversity within the Neotropical region. Biota Neotropica é uma revista do Programa BIOTA/FAPESP - O Instituto Virtual da Biodiversidade, que publica resultados de pesquisa original, vinculada ou não ao programa, que abordem a temática caracterização, conservação e uso sustentável da biodiversidade na região Neotropical. Biota Neotropica is an eletronic journal which is available free at the following site http://www.biotaneotropica.org.br A Biota Neotropica é uma revista eletrônica e está integral e gratuitamente disponível no endereço http://www.biotaneotropica.org.br Biota Neotrop., vol. 11, no. 2 Copépodos Notodiaptomus sp. Kiefer
    [Show full text]
  • Senckenberg.De]; Sahar Khodami [[email protected]]; Terue C
    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Arthropod Systematics and Phylogeny Jahr/Year: 2018 Band/Volume: 76 Autor(en)/Author(s): Mercado-Salas Nancy F., Khodami Sahar, Kihara Terue C., Elias-Gutierrez Manuel, Martinez Arbizu Pedro Artikel/Article: Genetic structure and distributional patterns of the genus Mastigodiaptomus (Copepoda) in Mexico, with the description of a new species from the Yucatan Peninsula 487-507 76 (3): 487– 507 11.12.2018 © Senckenberg Gesellschaft für Naturforschung, 2018. Genetic structure and distributional patterns of the genus Mastigodiaptomus (Copepoda) in Mexico, with the de- scription of a new species from the Yucatan Peninsula Nancy F. Mercado-Salas*, 1, Sahar Khodami 1, Terue C. Kihara 1, Manuel Elías-Gutiérrez 2 & Pedro Martínez Arbizu 1 1 Senckenberg am Meer Wilhelmshaven, Südstrand 44, 26382 Wilhelmshaven, Germany; Nancy F. Mercado-Salas * [nancy.mercado@ senckenberg.de]; Sahar Khodami [[email protected]]; Terue C. Kihara [[email protected]], Pedro Martí- nez Arbizu [[email protected]] — 2 El Colegio de la Frontera Sur, Av. Centenario Km. 5.5, 77014 Chetumal Quintana Roo, Mexico; Manuel Elías-Gutiérrez [[email protected]] — * Corresponding author Accepted 09.x.2018. Published online at www.senckenberg.de/arthropod-systematics on 27.xi.2018. Editors in charge: Stefan Richter & Klaus-Dieter Klass Abstract. Mastigodiaptomus is the most common diaptomid in the Southern USA, Mexico, Central America and Caribbean freshwaters, nevertheless its distributional patterns and diversity cannot be stablished because of the presence of cryptic species hidden under wide distributed forms. Herein we study the morphological and molecular variation of the calanoid fauna from two Biosphere Reserves in the Yucatan Peninsula and we describe a new species of the genus Mastigodiaptomus.
    [Show full text]
  • Coprpodos Plancttnicos Del
    Rervista Dugandia, Facultad de Ciencias Básicas Nueva época, Volumen 1 No. 2, julio-diciembre 2005 COPÉPODOS PLANCTÓNICOS DEL COMPLEJO CENAGOSO DE MALAMBO (ATLÁNTICO, COLOMBIA) Y SU RELACIÓN CON ALGUNOS FACTORES FÍSICOS Y QUÍMICOS DEL AGUA Liseth Atencio F.1;2, Luís Gutierrez M.1;3, Santiago Gaviria M.4 1Biodiversidad del Caribe Colombiano, grupo de Investigación, departamento de Biología, Universidad del Atlántico., Km 7 antigua vía a Puerto; , Universidad del Atlántico Colombia, A.A. 1890, Barranquilla, Colombianto; 2e-mail: [email protected]; 3Facultad de Ciencias Básicas; 4Departamento de Limnología e Hidrobiología, Universidad de Viena. Resumen.Se estudiaron los copépodos planctónicos en el complejo cenagoso de Malambo, localizado al nororiente del Departamento del Atlántico, Colombia durante un pulso de inundación de un régimen hidrológico anual. Este sistema de ciénagas se encuentra conectado al Río Magdalena y está compuesto por tres ciénagas: Bahía, Malambo y Convento y sus cuatro respectivos caños de interconexión: caño de Soledad, Hondo, Tortuga y Pingüino. Las especies de copépodos colectadas y sus respectivos porcenta- jes en la abundancia total fueron Notodiaptomus maracaibensis (49 %), Notodiaptomus coniferoides (21 %), Mesocyclops venezolanus (16 %) y Thermocyclops tenuis (14 %). Las tres últimas especies constituyen nuevos reportes para el Departamento del Atlántico. Las abundan- cias fueron mayores para las ciénagas que para los caños, lo que co- incide con su biología ya que estas especies colonizan más fácilmente ecosistemas lénticos. Durante el muestreo se presentaron menores abundancias en el mes de diciembre, debido posiblemente a un efecto de dilución, de la inundación de las ciénagas desde el río Magdalena. Comparativamente se presentaron las mayores abundancias en enero y febrero (periodo de estiaje y aguas bajas) esto se relaciona con la remoción y concentración de nutrientes (por disminución el volumen del cuerpo de agua) favoreciendo la producción de …toplancton, lo cual incrementa la oferta alimenticia de estas especies.
    [Show full text]
  • BIOTA COLOMBIANA ISSN Impreso 0124-5376 Volumen 20 · Número 1 · Enero-Junio De 2019 ISSN Digital 2539-200X DOI 10.21068/C001
    BIOTA COLOMBIANA ISSN impreso 0124-5376 Volumen 20 · Número 1 · Enero-junio de 2019 ISSN digital 2539-200X DOI 10.21068/c001 Atropellamiento vial de fauna silvestre en la Troncal del Caribe Amaryllidaceae en Colombia Adiciones al inventario de copépodos de Colombia Nuevos registros de avispas en la región del Orinoco Herpetofauna de San José del Guaviare Escarabajos estercoleros en Aves en los páramos de Antioquia Oglán Alto, Ecuador y el complejo de Chingaza Biota Colombiana es una revista científica, periódica-semestral, Comité Directivo / Steering Committee que publica artículos originales y ensayos sobre la biodiversi- Brigitte L. G. Baptiste Instituto de Investigación de Recursos Biológicos dad de la región neotropical, con énfasis en Colombia y países Alexander von Humboldt vecinos, arbitrados mínimo por dos evaluadores externos. In- M. Gonzalo Andrade Instituto de Ciencias Naturales, Universidad Nacional de Colombia cluye temas relativos a botánica, zoología, ecología, biología, Francisco A. Arias Isaza Instituto de Investigaciones Marinas y Costeras limnología, conservación, manejo de recursos y uso de la bio- “José Benito Vives De Andréis” - Invemar diversidad. El envío de un manuscrito implica la declaración Charlotte Taylor Missouri Botanical Garden explícita por parte del (los) autor (es) de que este no ha sido previamente publicado, ni aceptado para su publicación en otra Editor / Editor revista u otro órgano de difusión científica. El proceso de arbi- Rodrigo Bernal Independiente traje tiene una duración mínima de tres a cuatro meses a partir Editor de artículos de datos / Data papers Editor de la recepción del artículo por parte de Biota Colombiana. To- Dairo Escobar Instituto de Investigación de Recursos Biológicos das las contribuciones son de la entera responsabilidad de sus Alexander von Humboldt autores y no del Instituto de Investigación de Recursos Bioló- Asistente editorial / Editorial assistant gicos Alexander von Humboldt, ni de la revista o sus editores.
    [Show full text]
  • Universidad Pedagógica Y Tecnológica De Colombia Facultad De Ciencias Escuela De Ciencias Biológicas-Posgrado Maestría En Ciencias Biológicas
    UNIVERSIDAD PEDAGÓGICA Y TECNOLÓGICA DE COLOMBIA FACULTAD DE CIENCIAS ESCUELA DE CIENCIAS BIOLÓGICAS-POSGRADO MAESTRÍA EN CIENCIAS BIOLÓGICAS ANÁLISIS DE LA IMPORTANCIA DEL CARBONO ORGÁNICO DISUELTO EN LAGOS ANDINOS TROPICALES Requisito para optar el título de Magister en Ciencias Biológicas ADRIANA PEDROZA RAMOS Tunja Enero, 2021 UNIVERSIDAD PEDAGÓGICA Y TECNOLÓGICA DE COLOMBIA FACULTAD DE CIENCIAS ESCUELA DE CIENCIAS BIOLÓGICAS-POSGRADO MAESTRÍA EN CIENCIAS BIOLÓGICAS ANÁLISIS DE LA IMPORTANCIA DEL CARBONO ORGÁNICO DISUELTO EN LAGOS ANDINOS TROPICALES Requisito para optar el título de Magister en Ciencias Biológicas ADRIANA PEDROZA RAMOS Director: Ph.D. NELSON JAVIER ARANGUREN RIAÑO Universidad Pedagógica y Tecnológica de Colombia Unidad de Ecología en Sistemas Acuáticos Tunja Enero, 2021 CERTIFICADO DE ORIGINALIDAD Nelson Javier Aranguren Riaño, Doctor en Ciencias-Biología con énfasis en ecología de ecosistemas continentales, Docente asociado, UPTC. CERTIFICA: Que el trabajo de grado realizado bajo mi dirección por Adriana Pedroza Ramos titulado “ANÁLISIS DE LA IMPORTANCIA DEL CARBONO ORGÁNICO DISUELTO EN LAGOS ANDINOS TROPICALES”, reúne las condiciones de originalidad requeridas para optar al título de Magister en Ciencias Biológicas otorgado por la UPTC. Y para que así conste, firmo la siguiente certificación en Tunja, a los dieciocho días del mes de enero de 2021. _____________________________ PhD. Nelson Javier Aranguren Riaño Director Universidad Pedagógica y Tecnológica de Colombia Unidad de Ecología en Sistemas Acuáticos I _____________________________
    [Show full text]
  • Southeastern Regional Taxonomic Center South Carolina Department of Natural Resources
    Southeastern Regional Taxonomic Center South Carolina Department of Natural Resources http://www.dnr.sc.gov/marine/sertc/ Southeastern Regional Taxonomic Center Invertebrate Literature Library (updated 9 May 2012, 4056 entries) (1958-1959). Proceedings of the salt marsh conference held at the Marine Institute of the University of Georgia, Apollo Island, Georgia March 25-28, 1958. Salt Marsh Conference, The Marine Institute, University of Georgia, Sapelo Island, Georgia, Marine Institute of the University of Georgia. (1975). Phylum Arthropoda: Crustacea, Amphipoda: Caprellidea. Light's Manual: Intertidal Invertebrates of the Central California Coast. R. I. Smith and J. T. Carlton, University of California Press. (1975). Phylum Arthropoda: Crustacea, Amphipoda: Gammaridea. Light's Manual: Intertidal Invertebrates of the Central California Coast. R. I. Smith and J. T. Carlton, University of California Press. (1981). Stomatopods. FAO species identification sheets for fishery purposes. Eastern Central Atlantic; fishing areas 34,47 (in part).Canada Funds-in Trust. Ottawa, Department of Fisheries and Oceans Canada, by arrangement with the Food and Agriculture Organization of the United Nations, vols. 1-7. W. Fischer, G. Bianchi and W. B. Scott. (1984). Taxonomic guide to the polychaetes of the northern Gulf of Mexico. Volume II. Final report to the Minerals Management Service. J. M. Uebelacker and P. G. Johnson. Mobile, AL, Barry A. Vittor & Associates, Inc. (1984). Taxonomic guide to the polychaetes of the northern Gulf of Mexico. Volume III. Final report to the Minerals Management Service. J. M. Uebelacker and P. G. Johnson. Mobile, AL, Barry A. Vittor & Associates, Inc. (1984). Taxonomic guide to the polychaetes of the northern Gulf of Mexico.
    [Show full text]
  • 'Variable Proportional', and 'Mix
    bioRxiv preprint doi: https://doi.org/10.1101/379164; this version posted July 28, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 A test of the general occurrence and predictive utility of isochronal, equiproportional, 2 ‘variable proportional’, and ‘mixed’ development among arthropods 3 4 Running Head: Proportionality in arthropod development 5 6 Brady K. Quinn* 7 8 Department of Biological Sciences, University of New Brunswick, 100 Tucker Park Road, Saint 9 John, NB, Canada E2L 4L5 10 *Corresponding author: [email protected], 1-506-343-7676 11 12 Highlights 13 14 Whether arthropod development is generally isochronal or equiproportional was tested 15 Developmental proportions of most species’ stages varied with temperature 16 Many species had ‘mixed’ development between variable and equiproportional types 17 The general occurrence of isochronal and equiproportional development was rejected 18 Equiproportional development did make reasonable predictions of stage durations 19 20 21 22 23 1 bioRxiv preprint doi: https://doi.org/10.1101/379164; this version posted July 28, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 24 ABSTRACT 25 26 In isochronal (ICD) and equiproportional development (EPD), the proportion of total immature 27 development spent in each stage does not vary among temperatures or stages, respectively.
    [Show full text]
  • BD1979049002003.Pdf
    Bijdragen lot de Dierkunde, 49 (2): 219-226 1979 Amsterdam Expeditions to the West Indian Islands, Report 5. Notodiaptomus caperatus, a new calanoid copepod from phreatic groundwater in Barbuda (Crustacea: Diaptomidae) by Thomas E. Bowman Department of Invertebrate Zoology, Smithsonian Institution, Washington, DC 20560, U.S.A. Abstract Description. — Female: Length 1.6-1.7 mm. In dorsal view body widest at posterior from well in is Notodiaptomus caperatus n. sp., a Barbuda, cephalosome and pediger 1, gradually narrowing described and illustrated. It is the first diaptomid from the 4 and 5 5 Lesser Antilles and the first West Indian diaptomid having posteriorly. Pedigers separate. Pediger affinities with South American species. produced into small wings; left wing directed slightly obliquely, armed with 2 conical spines; right wing directed nearly laterad, armed with 2 INTRODUCTION conical spines. Urosome 2-merous, most or all of 2nd segment Recently Dr. Jan H. Stock (Zoologisch Museum, telescoped into genital segment. Genital segment University of Amsterdam) sent to me for study a 1.5 as of anterior nearly X long as rest urosome; sample of calanoid copepods that he had collected part expanded laterally into lobe on either side; in phreatic groundwaters of Barbuda, the north- with right lobe steeper sides, bearing conical spine easternmost of the Leeward Islands of the Lesser at summit; left lobe with unarmed summit, but Antilles. The copepods proved to be the new with conical spine at posterior base. In lateral view diaptomid described below, the first from the genital segment produced into posteroventral Lesser Antilles. pouchlike protuberance, anterior to which are several vertical folds.
    [Show full text]
  • A Combined Approach of Experiments and Modelling for the Implementation of Freshwater Copepods in Ecological Risk Assessment
    A Combined Approach of Experiments and Modelling for the Implementation of Freshwater Copepods in Ecological Risk Assessment Von der Fakultät für Mathematik, Informatik und Naturwissenschaften der RWTH Aachen University zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften genehmigte Dissertation vorgelegt von Devdutt Kulkarni, M.Sc. aus Pune, Indien Berichter: Universitätsprofessor Dr. Andreas Schäffer Prof. Dr. ir. Paul van den Brink Tag der mündlichen Prüfung: 27. Februar 2014 Diese Dissertation ist auf den Internetseiten der Hochschulbibliothek online verfügbar. “Prediction is very difficult, especially if it's about the future.” Niels Bohr Erklärung Ich versichere, dass ich diese Doktorarbeit selbständig und nur unter Verwendung der angegebenen Hilfsmittel angefertigt habe. Weiterhin versichere ich, die aus benutzten Quellen wörtlich oder inhaltlich entnommenen Stellen als solche kenntlich gemacht zu haben. Devdutt Kulkarni Aachen, am 28. Februar 2014 Zusammenfassung Standardisierte Testrichtlinien, wie sie in der ökologischen Risikobewertung von Chemikalien verwendet werden, stehen nur für eine relativ kleine Gruppe von Arten zur Verfügung. Zum Beispiel wird der Wasserfloh Daphnia magna in den meisten Fällen als einzige repräsentative Art für Süßwasserinvertebraten gefordert. Dies erfolgt unter der Annahme, dass solche Tests mit Standardarten in Kombination mit relativ großen Extrapolationsfaktoren auch die Arten im Freiland ausreichend schützen. Standardtestarten werden in der Regel wegen ihrer intrinsischen
    [Show full text]
  • Intropica 16 (2): Postprint
    Intropica 16 (2): Postprint Occurrence of Notodiaptomus maracaibensis Kiefer, 1954 (Copepoda: Calanoida, Diaptomidae) from an ephemeral pond in northern Colombia Presencia de Notodiaptomus maracaibensis Kiefer, 1954 (Crustacea: Copepoda: Calanoida, Diaptomidae) en una charca temporal al norte de Colombia Juan M. Fuentes-Reinés1*, Eduardo Suárez-Morales2 and Pedro Eslava-Eljaiek1 1. Universidad del Magdalena, Grupo de Investigación en Biodiversidad y Ecología Aplicada, Santa Marta, Colombia 2. El Colegio de la Frontera Sur, Unidad Chetumal, Chetumal, Quintana Roo, México *Autor de correspondencia: [email protected] Recibido: 05 de marzo de 2021 Aceptado: 30 de julio de 2021 Publicación en línea: 30 de agosto de 2021 Abstract Key words: copepods; diaptomids; The freshwater Neotropical planktonic copepod Notodiaptomus maracaibensis Kiefer, 1954 was found in freshwater zooplankton; a small temporal pond in northern La Guajira. Hitherto, it has been reported in Venezuela and Colombia, La Guajira; taxonomy mainly in the Caribbean region. This is the first documented, illustrated record confirming its presence in Colombia and La Guajira department. Our specimens from La Guajira, have the combination of diagnostic features of N. maracaibensis as reported in both the original description and subsequent taxonomical accounts, including: 1) segment 15 of male right antennule lacking spinous process, 2) inner margin of male right P5 basipodite smooth, 3) male right P5 endopod short, 4) male right P5 exopod 2 almost 2.5 times as long as wide; 5) lateral spine of male P5 exopod2 inserted subdistally; 6) lateral wings of female pediger 5 asymmetrical, 7) inner margin of female lateral wings with a spinules row , 8) left lateral wing with both sensilla inserted closer to each other than on right wing; 9) female genital double-somite 1.5 times as long as wide, 10) both sensilla of genital double-somite arranged perpendicularly to body axis.
    [Show full text]
  • Procesos Geoquímicos Superficiales En Iberoamérica
    PROCESOS GEOQUÍMICOS SUPERFICIALES EN IBEROAMÉRICA RED IBEROAMERICANA DE FÍSICA Y QUÍMICA AMBIENTAL (RiFyQA) SOCIEDAD IBEROAMERICANA DE FÍSICA Y QUÍMICA AMBIENTAL Editores: JORGE E. MARCOVECCHIO, SANDRA E. BOTTÉ y RUBÉN HUGO FREIJE Bahía Blanca, Argentina (2014) IMAGEN DE PORTADA: Diferencias de manejo ganadero en Beira Baixa (Castelo Branco, Portugal). Autor: Juan F. GALLARDO. FOTOGRAFÍAS DE CONTRAPORTADA: Alteración de bolo granítico, San Martín de Trevejo (Alta Extremadura, España). Autor: Juan F. GALLARDO. FOTOGRAFÍAS DE SOLAPAS: - Arroyo de drenaje de una cuenca; mallín patagónico de Puesto Riera (Chubut, Patagonia argentina). Autor: Pablo G. ACEÑOLAZA. - Efectos sobre las acículas de emanaciones ácidas de azufre (Veracruz, Méjico). Autor: Juan F. GALLARDO. COMENTARIOS: Juan F. GALLARDO (Coordinador de la obra). El manejo humano de los recursos, sea ganadero o de otro tipo, tiene grandes repercusiones sobre el ambiente. En la fotografía de portada podemos ver la notable diferencia entre la acción del ganado de cerda (izquierda) en comparación con el ganado lanar (derecha) sobre el suelo a semejante carga ganadera. Por tanto, actividades antrópicas tan aparentemente inocuas como puede ser la dieta proteínica humana tiene grandes impactos ambientales, pues si la cultura alimentaria es a base de cerdos el riesgo de erosión edáfica se acrecienta en comparación con la cultura alimentaria del cordero. Ello no significa que en el segundo caso se eviten erosiones pues, evidentemente, éstas están vienen también condicionadas por la carga ganadera (como es conocido). Es decir, se coma jamón serrano o se coma lechazo el manejo aplicado en la cría de tales los animales va a determinar el mantenimiento o degradación del recurso suelo.
    [Show full text]