DOCSLIB.ORG

Crustacea, Ostracoda, Darwinulidae) from Semiterrestrial Habitats in São Paulo State (Brazil)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Crustacea, Ostracoda, Darwinulidae) from Semiterrestrial Habitats in São Paulo State (Brazil) Blackwell Science, LtdOxford, UKZOJZoological Journal of the Linnean Society0024-4082The Lin- nean Society of London, 2003? 2003 1392 305313 Original Article TWO NEW SPECIES OF VESTALENULA (OSTRACODA, DARWINULIDAE)R. L. PINTO ET AL. Zoological Journal of the Linnean Society, 2003, 139, 305–313. With 3 figures On two new species of the genus Vestalenula Rossetti & Martens, 1998 (Crustacea, Ostracoda, Darwinulidae) from semiterrestrial habitats in São Paulo State (Brazil) R. L. PINTO1,*, C. E. F. ROCHA1 and K. MARTENS2,3 Downloaded from https://academic.oup.com/zoolinnean/article/139/2/305/2629569 by guest on 23 November 2020 1Departamento de Zoologia-IBUSP, Rua do Matão, trav. 14, n°101, CEP05508–900 São Paulo–SP, Brazil 2Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, 1000 Brussels, Belgium 3University of Ghent, Department of Biology, K. L. Ledeganckstraat 35, B9000 Gent, Belgium Received March 2002; accepted for publication February 2003 Two new species of semiterrestrial darwinulid ostracods, both belonging to the pagliolii-lineage of the genus Ves- talenula, are described here. Vestalenula botocuda sp. nov., collected from moist mud in a rain forest remnant, is an enigmatic species, as it combines valve characters of the boteai-lineage with soft part features of the danielopoli-lineage within the genus. Vestalenula irajai sp. nov., found in several types of semiterrestrial habi- tats, is closely related to V. pagliolii in its soft part morphology, but has more elongated valves, with straight dorsal and ventral margins running parallel to each other. The description of these new species confirms the relatively high levels of endemicity and diversity in Southern Hemisphere Vestalenula and challenges earlier classifications of this group. © 2003 The Linnean Society of London, Zoological Journal of the Linnean Society, 2003, 139, 305-313. ADDITIONAL KEYWORDS: ancient asexuals – morphology – South America – Southern Hemisphere – taxonomy. INTRODUCTION 1997), South Africa (Martens & Rossetti, 1997; Ros- setti & Martens, 1999), New Zealand and Australia Darwinulidae are so-called ancient asexuals (Butlin & (Rossetti, Eagar & Martens, 1998; Rossetti & Mar- Griffiths, 1993; Judson & Normark, 1996), organisms tens, 1999; Martens & Rossetti, 2002). This culmi- which have persisted over geologically long periods of nated in a world-wide revision of the group, which time without sexual reproduction. There appear to introduced three new genera, bringing the total num- have been no bisexual populations for at least 150 Myr ber to five extant genera (Rossetti & Martens, 1998). (Martens, 1998). All living Darwinuloidea belong to one Most work on South American darwinulids dates subfamily, the Darwinulinae Brady & Norman, 1889, from before 1970, with the exception of Rossetti, Mar- although the Palaeozoic–Recent fossil record of this tens & Mourguiart (1996), and only the paper by Pinto superfamily comprises representatives of eight sub- & Kotzian (1961) deals with the detailed taxonomy of families in two families. the Darwinulidae. Martens & Behen (1994) list the For a long time, Recent darwinulids, which are species of darwinulid ostracods at that stage reported exclusively nonmarine, were treated as a marginal from South America (see Martens, Würdig & Behen, group and little attention was devoted to them. How- 1998, for an account of Brazilian darwinulids). How- ever, their recognition as putative ancient asexuals ever, several taxonomic alterations to this list were initiated renewed interest, and provoked a series of suggested by Rossetti & Martens (1998): all species ecological (Van Doninck et al. 2002), molecular (Schön except D. stevensoni were transferred to one of the et al., 1998) and taxonomic studies. Several taxonomic three new genera; Penthesilenula brasiliensis is now papers have presented regional surveys of darwinulid considered a valid species, not a subspecies of P. afri- faunas, e.g. Europe (Martens, Rossetti & Fuhrman, cana and Alicenula serricaudata espinosa was synon- ymized with the nominal subspecies. Taking into *Corresponding author: E-mail. [email protected] account these alterations, together with the two new © 2003 The Linnean Society of London, Zoological Journal of the Linnean Society, 2003, 139, 305–313 305 306 R. L. PINTO ET AL. species described here, nine darwinulid species are Muddy patches in a dry streamlet in a rain forest presently known from South America. remnant. The mud was moist at the time of collecting; during wet season standing or running water might be MATERIAL AND METHODS present. Material collected on 15.08.2001 by CEFR and RLP. Material was collected during a preliminary sampling campaign of terrestrial and semiterrestrial habitats in the State of São Paulo, conducted by C. E. F. Rocha Type material (CEFR) and J. W. Reid (JWR) in 1999 and by C. E. F. Holotype: an ovigerous, dissected female, with valves Rocha and R. L. Pinto (RLP) in 2001. Ostracods were stored dry in a micropalaeontological slide and dis- collected live from leaf litter, mosses, etc. and killed sected soft parts kept in a sealed slide (MZUSP 15041). and preserved in 70% ethanol. These collections con- Paratypes: an ovigerous female dissected and stored Downloaded from https://academic.oup.com/zoolinnean/article/139/2/305/2629569 by guest on 23 November 2020 tained several species from the families Darwinulidae, like the holotype (MZUSP 15043); 2 ovigerous, dis- Cyprididae and Candonidae (Pinto, Rocha & Martens, sected females, with valves used for SEM and stored 2001). The present paper deals with the darwinulid in micropalaeontological slides, and dissected soft genus Vestalenula only, other (new as well as known) parts kept in sealed slides (MZUSP 15042, MZUSP species will be reported on in detail elsewhere. 15044); 3 carapaces used for SEM and stored in micro- Dissections were effected with micro needles under palaeontological slides (MZUSP 15045, MZUSP a stereo-light microscope. Valves were stored dry in 15046, MZUSP 15047); 4 ovigerous females kept in micropalaeontological slides; soft parts were dissected toto in ETOH (MZUSP 15048). in CMC/9AF medium with Rose Bengal and were mounted in permanent slides. Micrographs of valves were made with a Zeiss Scanning Electron Microscope. Derivation of name Deposition of material: all type material is deposited Botocudos is the designation of several South Ameri- in the Museu de Zoologia da Universidade de São can Indian tribes that use a device to enlarge the Paulo (MZUSP). The following abbreviations were lower lip. The present species is characterized by the used in text and figures: fact that the LV forms an enlarged anterior ‘lip’, Valves. Cp, carapace; H, height; L, length; LV, left valve; greatly overlapping the RV. RV, right valve; ms, central muscle scar(s); dv, dorsal view; vv, ventral view; lv, lateral view; iv, internal view. Abbreviated diagnosis Limbs and soft parts. A1, antennula; A2, antenna; Md, Valves elongated (L/H = c. 2.1), with straight parts of mandibula; Mx, maxillula; T1-3, thoracic limbs; CR, dorsal margin slightly sloping towards the front; ante- caudal ramus (previously named furca); exo, exopodite rior overlap LV > RV unusually pronounced and typi- on A2; Ac, ventral aesthetasc clump on A2; s1, s2, t, w, cal; ms relatively large; keel on RV short and rounded x, y, specific setae on limbs; y1–3, aesthetascs. and positioned rather posteriorly; third segment of A1 Nomenclature proposed by Danielopol (1968, 1970), with ventro-apical seta. First endopodal segment of A2 and adapted by Rossetti & Martens (1998) is used in with 2 apical setae; seta z on penultimate segment the description of chaetotaxy of soft parts. For higher claw-like. Md-palp with seta x longer than w. taxonomy, the system proposed by Horne, Cohen & Martens (2002) is followed. Description TAXONOMIC DESCRIPTIONS Cp (Fig. 3I-P) with whitish, smooth surface covered CLASS OSTRACODA LATREILLE, 1806 SUBCLASS with long, widely spaced setae; elongated, in lateral PODOCOPA G.W. MÜLLER, 1894 ORDER PODOCOPIDA view, with straight parts of dorsal (c. 30% of total SARS, 1866 SUBORDER PODOCOPINA SARS, 1866 length) and ventral (c. 55%) margins subparallel, dor- SUPERFAMILY DARWINULOIDEA BRADY & NORMAN, sal margin slightly sloping. LV overlapping RV along anterior, ventral and posterior margins; anterior over- 1889 FAMILY DARWINULIDAE BRADY & NORMAN, 1889 lap very pronounced, LV extending significantly GENUS VESTALENULA ROSSETTI & MARTENS, 1998 beyond RV. Both valves asymmetrical in dorsal and VESTALENULA BOTOCUDA SP. NOV. ventral views, widest in the posterior quarter of the (FIGS 1A–E, 3I–P) carapace, LV bulging over RV on the posterior side, Type locality anteriorly extending significantly beyond RV; central Sítio da Colônia, Mulungu, near Araçoiaba da Serra, part with a weak constriction. Ventral margin in ven- São Paulo State, Brazil. Approximate GPS coordi- tral view strongly sinuous; keel short and rounded, nates: 23∞32¢2≤S, 47∞39¢ 41.1≤W. effectively blocking LV in tightly closed carapaces. © 2003 The Linnean Society of London, Zoological Journal of the Linnean Society, 2003, 139, 305–313 TWO NEW SPECIES OF VESTALENULA (OSTRACODA, DARWINULIDAE) 307 Downloaded from https://academic.oup.com/zoolinnean/article/139/2/305/2629569 by guest on 23 November 2020 Figure 1. Vestalenula botocuda sp. nov. A. A1, lv (MZUSP 15044). B. A2, lv (MZUSP 15041). C. Md-palp, lv (idem). D. CR and postabdomen, vv (MZUSP 15042). E. CR and postabdomen, lv (MZUSP 15041). Scale bars
Load more

Recommended publications
  • Volume 2, Chapter 10-2: Arthropods: Crustacea
    Glime, J. M. 2017. Arthropods: Crustacea – Ostracoda and Amphipoda. Chapt. 10-2. In: Glime, J. M. Bryophyte Ecology. Volume 2. 10-2-1 Bryological Interaction. Ebook sponsored by Michigan Technological University and the International Association of Bryologists. Last updated 19 July 2020 and available at <http://digitalcommons.mtu.edu/bryophyte-ecology2/>. CHAPTER 10-2 ARTHROPODS: CRUSTACEA – OSTRACODA AND AMPHPODA TABLE OF CONTENTS CLASS OSTRACODA ..................................................................................................................................... 10-2-2 Adaptations ................................................................................................................................................ 10-2-3 Swimming to Crawling ....................................................................................................................... 10-2-3 Reproduction ....................................................................................................................................... 10-2-3 Habitats ...................................................................................................................................................... 10-2-3 Terrestrial ............................................................................................................................................ 10-2-3 Peat Bogs ............................................................................................................................................ 10-2-4 Aquatic ...............................................................................................................................................
    [Show full text]
  • Crustacea, Ostracoda), from Christmas Island (Indian Ocean) with Some Considerations on the Morphological Evolution of Ancient Asexuals
    Belg. J. Zool., 141 (2) : 55-74 July 2011 Description of a new genus and two new species of Darwinulidae (Crustacea, Ostracoda), from Christmas Island (Indian Ocean) with some considerations on the morphological evolution of ancient asexuals Giampaolo Rossetti1*, Ricardo L. Pinto 2 & Koen Martens 3 1 University of Panna, Department of Enviromnental Sciences, Viale G.P. Usberti 33 A, 1-43100 Panna, Italy 2 University of Brasilia, Institute of Geosciences, Laboratory of Micropaleontology, ICC, Campus Universitário Darcy Ribeiro Asa Norte, 70910-900 Brasilia, DF, Brazil 3 Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium, and University of Ghent, Department of Biology, K.L. Ledeganckstraat 35, B-9000 Gent, Belgimn * Conesponding author: Giampaolo Rossetti. Mail: giampaolo.rosscttin unipr.it ABSTRACT. Darwinulidae is believed to be one of the few metazoan taxa in which fully asexual reproduction might have persisted for millions of years. Although rare males in a single darwinulid species have recently been found, they may be non-functional atavisms. The representatives of this family are characterized by a slow evolutionary rate, resulting in a conservative morphology in the different lineages over long time frames and across wide geographic ranges. Differences between species and genera, although often based on small details of valve morphology and chaetotaxy, are nevertheless well-recognizable. Five recent genera ( Darwinula, Alicenula, Vestcdemilct, Penthesilemila and Microdarwimda) and about 35 living species, including also those left in open nomenclature, are included in this family. Previous phylogenetic analyses using both morphological characters and molecular data confirmed that the five genera are good phyletic units.
    [Show full text]
  • Ostracoda, Crustacea) in Turkey
    LIMNOFISH-Journal of Limnology and Freshwater Fisheries Research 5(1): 47-59 (2019) Fossil and Recent Distribution and Ecology of Ancient Asexual Ostracod Darwinula stevensoni (Ostracoda, Crustacea) in Turkey Mehmet YAVUZATMACA * , Okan KÜLKÖYLÜOĞLU Department of Biology, Faculty of Arts and Science, Bolu Abant İzzet Baysal University, Turkey ABSTRACT ARTICLE INFO In order to determine distribution, habitat and ecological preferences of RESEARCH ARTICLE Darwinula stevensoni, data gathered from 102 samples collected in Turkey between 2000 and 2017 was evaluated. A total of 1786 individuals of D. Received : 28.08.2018 stevensoni were reported from eight different aquatic habitats in 14 provinces in Revised : 21.10.2018 six of seven geographical regions of Turkey. Although there are plenty of samples Accepted : 30.10.2018 from Central Anatolia Region, recent form of the species was not encountered. Unlike recent, fossil forms of species were encountered in all geographic regions Published : 25.04.2019 except Southeastern Anatolia. The oldest fossil record in Turkey was reported from the Miocene period (ca 23 mya). Species occurred in all climatic seasons in DOI:10.17216/LimnoFish.455722 Turkey. D. stevensoni showed high optimum and tolerance levels to different ecological variables. Results showed a positive and negative significant * CORRESPONDING AUTHOR correlations of the species with pH (P<0.05) and elevation (P<0.01), respectively. [email protected] It seems that the ecological preferences of the species are much wider than Phone : +90 537 769 46 28 previously known. Our results suggest that if D. stevensoni is used to estimate past and present environmental conditions, attention and care should be paid on its ecology and distribution.
    [Show full text]
  • On Two New Species of Darwinula BRADY & ROBERTSON, 1885
    BULLETIN DE L'INSTITUT ROYAL DES SCIENCES NATURELLES DE BELGIQUE, BIOLOGIE, 67: 57-66, 1997 '' BULLETIN VAN HET KONrNKLIJK BELGISCH INSTITUUT VOOR NATUURWETENSCHAPPEN, BIOLOGIE, 67: 57-66, 1997 On two new species of Darwinula BRADY & ROBERTSON, 1885 (Crustacea, Ostracoda) from South African dolomitic springs by Koen MARTENS & Giampaolo ROSSETTI Abstract 1968 (represented by only one extant spec1es, M. zimmeri) and the nominate genus Danvinula BRADY Two new Recent darwinulid ostrac ds (Darwinu/a molopoensis & ROB ERTSON, 1885. SOHN (1987) reported 23 living spec. nov. and D. inversa spec. nov.) are described from dolomitic species and 2 subspecies for Darwinula (D. dicastrii springs in the former North West Province (the former Transvaal), LOFFLER was missing from this list); amon·g these RSA. The two new taxa can be distinguished by both soft part species, only D. stevensoni can be considered truly and valve morphology. Darwinula molopoensis spec. nov. belongs ubiquitous. to the D. africana lineage (with D. incon5picua KuE as its Except for a few papers on D. stevensoni (McGREGOR & closest relative), D. inversa spec. nov. belongs into the D. serricaudata group. The synonymy of D. serricaudata espinosa WETZEL 1968, MCGREGOR 1969; RANTA, 1979), little is PINTO & KOTZIAN, 1961 with D. serricaudata KLIE, 1935 is known on the biology and ecology of the Darwinuloidea. discussed. Also taxonomic relationships within this group remain Key words: Ostracods, Darwinu/a mo/opoensis spec. nov., " "unclear, in s'pite of valuable contributions by DAN IELOPOL Darwinula inversa spec. nov., morphology, taxonomy, ancient (1968, 1970, 1980). Indeed, the morphological uniformity asexuals, parthenogenesis, biodiversity. of the Darwinuloidea makes it difficult to single out unequivocal characters suitable for discriminating species and genera.
    [Show full text]
  • Cypris 2016-2017
    CYPRIS 2016-2017 Illustrations courtesy of David Siveter For the upper image of the Silurian pentastomid crustacean Invavita piratica on the ostracod Nymphateline gravida Siveter et al., 2007. Siveter, David J., D.E.G. Briggs, Derek J. Siveter, and M.D. Sutton. 2015. A 425-million-year- old Silurian pentastomid parasitic on ostracods. Current Biology 23: 1-6. For the lower image of the Silurian ostracod Pauline avibella Siveter et al., 2012. Siveter, David J., D.E.G. Briggs, Derek J. Siveter, M.D. Sutton, and S.C. Joomun. 2013. A Silurian myodocope with preserved soft-parts: cautioning the interpretation of the shell-based ostracod record. Proceedings of the Royal Society London B, 280 20122664. DOI:10.1098/rspb.2012.2664 (published online 12 December 2012). Watermark courtesy of Carin Shinn. Table of Contents List of Correspondents Research Activities Algeria Argentina Australia Austria Belgium Brazil China Czech Republic Estonia France Germany Iceland Israel Italy Japan Luxembourg New Zealand Romania Russia Serbia Singapore Slovakia Slovenia Spain Switzerland Thailand Tunisia United Kingdom United States Meetings Requests Special Publications Research Notes Photographs and Drawings Techniques and Methods Awards New Taxa Funding Opportunities Obituaries Horst Blumenstengel Richard Forester Franz Goerlich Roger Kaesler Eugen Kempf Louis Kornicker Henri Oertli Iraja Damiani Pinto Evgenii Schornikov Michael Schudack Ian Slipper Robin Whatley Papers and Abstracts (2015-2007) 2016 2017 In press Addresses Figure courtesy of Francesco Versino,
    [Show full text]
  • Benthic Field Guide 5.5.Indb
    Field Identifi cation Guide to Heard Island and McDonald Islands Benthic Invertebrates Invertebrates Benthic Moore Islands Kirrily and McDonald and Hibberd Ty Island Heard to Guide cation Identifi Field Field Identifi cation Guide to Heard Island and McDonald Islands Benthic Invertebrates A guide for scientifi c observers aboard fi shing vessels Little is known about the deep sea benthic invertebrate diversity in the territory of Heard Island and McDonald Islands (HIMI). In an initiative to help further our understanding, invertebrate surveys over the past seven years have now revealed more than 500 species, many of which are endemic. This is an essential reference guide to these species. Illustrated with hundreds of representative photographs, it includes brief narratives on the biology and ecology of the major taxonomic groups and characteristic features of common species. It is primarily aimed at scientifi c observers, and is intended to be used as both a training tool prior to deployment at-sea, and for use in making accurate identifi cations of invertebrate by catch when operating in the HIMI region. Many of the featured organisms are also found throughout the Indian sector of the Southern Ocean, the guide therefore having national appeal. Ty Hibberd and Kirrily Moore Australian Antarctic Division Fisheries Research and Development Corporation covers2.indd 113 11/8/09 2:55:44 PM Author: Hibberd, Ty. Title: Field identification guide to Heard Island and McDonald Islands benthic invertebrates : a guide for scientific observers aboard fishing vessels / Ty Hibberd, Kirrily Moore. Edition: 1st ed. ISBN: 9781876934156 (pbk.) Notes: Bibliography. Subjects: Benthic animals—Heard Island (Heard and McDonald Islands)--Identification.
    [Show full text]
  • Distribution and Ecology of Non-Marine Ostracods (Crustacea, Ostracoda) from Friuli Venezia Giulia (NE Italy)
    J. Limnol., 68(1): 1-15, 2009 Distribution and ecology of non-marine ostracods (Crustacea, Ostracoda) from Friuli Venezia Giulia (NE Italy) Valentina PIERI, Koen MARTENS1), Fabio STOCH2) and Giampaolo ROSSETTI* Department of Environmental Sciences, University of Parma, Viale G.P. Usberti 33A, 43100 Parma, Italy 1)Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, 1000 Brussels, Belgium 2)Formerly Technical Secretariat for Protected Areas, Ministry for Environment, Territory Protection and Sea; present address: Via Sboccatore 3/27, 00069 Trevignano Romano, Roma, Italy *e-mail corresponding author: [email protected] ABSTRACT From August 1981 to July 2007, 200 inland water bodies were sampled to gather information on the Recent ostracod fauna of Friuli Venezia Giulia (NE Italy). A total of 320 samples were collected from surface, interstitial and ground waters. Whenever possible, ostracod identification was performed at species level based on the morphology of both valves and limbs. Seventy-four taxa in 30 genera belonging to 9 different families (Darwinulidae, Candonidae, Ilyocyprididae, Notodromadidae, Cyprididae, Limnocytheridae, Cytheridae, Leptocytheridae and Xestoleberididae) were identified. The maximum number of taxa per site was seven. The most common species was Cypria ophthalmica (133 records), followed by Cyclocypris ovum (86 records), C. laevis (49 records), Cypridopsis vidua (40 records) and Notodromas persica (28 records). Of particular relevance is the occurrence of six species new to Italy: Microdarwinula zimmeri, Penthesilenula brasiliensis, Fabaeformiscandona wegelini, Pseudocandona semicognita, Candonopsis scourfieldi, and C. mediosetosa. Scanning electron microscopy images of valves are provided for most of the described taxa. Geographical distribution of ostracods and their occurrence in relation to environmental variables were examined.
    [Show full text]
  • Crustacea: Ostracoda) De Pozas Temporales
    Heterocypris bosniaca (Petkowski et al., 2000): Ecología y ontogenia de un ostrácodo (Crustacea: Ostracoda) de pozas temporales. ESIS OCTORAL T D Josep Antoni Aguilar Alberola Departament de Microbiologia i Ecologia Universitat de València Programa de doctorat en Biodiversitat i Biologia Evolutiva Heterocypris bosniaca (Petkowski et al., 2000): Ecología y ontogenia de un ostrácodo (Crustacea: Ostracoda) de pozas temporales. Tesis doctoral presentada por Josep Antoni Aguilar Alberola 2013 Dirigida por Francesc Mesquita Joanes Imagen de cubierta: Vista lateral de la fase eclosionadora de Heterocypris bosniaca. Más detalles en el capítulo V. Tesis titulada "Heterocypris bosniaca (Petkowski et al., 2000): Ecología y ontogenia de un ostrácodo (Crustacea: Ostracoda) de pozas temporales" presentada por JOSEP ANTONI AGUILAR ALBEROLA para optar al grado de Doctor en Ciencias Biológicas por la Universitat de València. Firmado: Josep Antoni Aguilar Alberola Tesis dirigida por el Doctor en Ciencias Biológicas por la Universitat de València, FRANCESC MESQUITA JOANES. Firmado: F. Mesquita i Joanes Profesor Titular de Ecología Universitat de València A Laura, Paco, i la meua família Resumen Los ostrácodos son un grupo de pequeños crustáceos con amplia distribución mundial, cuyo cuerpo está protegido por dos valvas laterales que suelen preservarse con facilidad en el sedimento. En el presente trabajo se muestra la primera cita del ostrácodo Heterocypris bosniaca Petkowski, Scharf y Keyser, 2000 para la Península Ibérica. Se trata de una especie de cipridoideo muy poco conocida que habita pozas de aguas temporales. Se descubrió el año 2000 en Bosnia y desde entonces solo se ha reportado su presencia en Israel (2004) y en Valencia (presente trabajo).
    [Show full text]
  • E:\Krzymińska Po Recenzji\Sppap29.Vp
    JARMILA KRZYMIÑSKA, TADEUSZ NAMIOTKO Quaternary Ostracoda of the southern Baltic Sea (Poland) – taxonomy, palaeoecology and stratigraphy Polish Geological Institute Special Papers,29 WARSZAWA 2013 CONTENTS Introduction .....................................................6 Area covered and geological setting .........................................6 History of research on Ostracoda from Quaternary deposits of the Polish part of the Baltic Sea ..........8 Material and methods ...............................................10 Results and discussion ...............................................12 General overwiew on the distribution and diversity of Ostracoda in Late Glacial to Holocene sediments of the studied cores..........................12 An outline of structure of the ostracod carapace and valves .........................20 Pictorial key to Late Glacial and Holocene Ostracoda of the Polish part of the Baltic Sea and its coastal area ..............................................22 Systematic record and description of species .................................26 Hierarchical taxonomic position of genera of Quaternary Ostracoda of the southern Baltic Sea ......26 Description of species ...........................................27 Stratigraphy, distribution and palaeoecology of Ostracoda from the Quaternary of the southern Baltic Sea ...........................................35 Late Glacial and early Holocene fauna ...................................36 Middle and late Holocene fauna ......................................37 Concluding
    [Show full text]
  • Crustacea, Ostracoda), from Christmas Island (Indian Ocean) with Some Considerations on the Morphological Evolution of Ancient Asexuals
    Belg. J. Zool., 141 (2) : 55-74 July 2011 Description of a new genus and two new species of Darwinulidae (Crustacea, Ostracoda), from Christmas Island (Indian Ocean) with some considerations on the morphological evolution of ancient asexuals Giampaolo Rossetti1*, Ricardo L. Pinto2 & Koen Martens3 1 University of Parma, Department of Environmental Sciences, Viale G.P. Usberti 33A, I-43100 Parma, Italy 2 University of Brasília, Institute of Geosciences, Laboratory of Micropaleontology, ICC, Campus Universitário Darcy Ribeiro Asa Norte, 70910-900 Brasilia, DF, Brazil 3 Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium, and University of Ghent, Department of Biology, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium * Corresponding author: Giampaolo Rossetti. Mail: [email protected] ABSTRACT. Darwinulidae is believed to be one of the few metazoan taxa in which fully asexual reproduction might have persisted for millions of years. Although rare males in a single darwinulid species have recently been found, they may be non-functional atavisms. The representatives of this family are characterized by a slow evolutionary rate, resulting in a conservative morphology in the different lineages over long time frames and across wide geographic ranges. Differences between species and genera, although often based on small details of valve morphology and chaetotaxy, are nevertheless well-recognizable. Five recent genera (Darwinula, Alicenula, Vestalenula, Penthesilenula and Microdarwinula) and about 35 living species, including also those left in open nomenclature, are included in this family. Previous phylogenetic analyses using both morphological characters and molecular data confirmed that the five genera are good phyletic units. Here, we report on the results of a study on darwinulid ostracods from Christmas Island (Indian Ocean).
    [Show full text]
  • ©Zoologische Staatssammlung München;Download
    ©Zoologische Staatssammlung München;download: http://www.biodiversitylibrary.org/; www.biologiezentrum.at SPIXIANA ©Zoologische Staatssammlung München;download: http://www.biodiversitylibrary.org/; www.biologiezentrum.at marked reduction in unnecessary parts, while the In the present paper, I propose an hypothetical an- functional parts are strongly developed. Therefore, cestral ostracod antennula which is quite different it is sometimes difficult to recognize the various from the "ground plan" ostracod limb proposed by components of a primitive crustacean limb part. Hartmann (1966) (comprising all three protopod The antennula has retained a clearly recogniz- segments, several endites and two epipodites, four able biramous form in two crustacean ciasses, segmented endopod and eight segmented exopod), Remipedia and Malacostraca; while in four others however, in contrast to Maddocks (2000), with the (Branchiopoda, Maxillopoda, Cephalocarida and clear presence of two rami (Fig. 3). The presence of Ostracoda) it has undergone profound reductions the exopod remnants on the darwinulid antennula (for the illustration of the antennula in different (Fig. 5) indicates that this ramus existed in the os- crustacean ciasses see Brusca & Brusca 1990). In tracod ancestor. Using topology as an important tool Ostracoda the antennula has a maximum of eight in the search for homology (Rieppel 1994), it would articles and has sensory and locomotory functions. be possible to distinguish between protopod, endo- In the subclass Myodocopa the antennula of most pod and exopod on the antennula in the recent species shows sexual dimorphism (see Poulsen 1962, Ostracoda. 1965, Hörne et al. 2002). Many authors, especially To aid comparison between taxa and to facilitate recent ones, consider the ostracod antennula to be the identification of homologous structures, a Stand- uniramous, lacking any trace of protopod, endopod ard terminology was adopted (Huys & Boxshall and exopod, and refer to all articles as podomeres 1991).
    [Show full text]
  • Crustacea, Ostracoda, Darwinulidae), with the Description of a New Species, V
    Zootaxa 3666 (1): 062–072 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2013 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3666.1.6 http://zoobank.org/urn:lsid:zoobank.org:pub:7A546EDE-D791-4E72-93CF-3B95E3D601DD Contribution to the knowledge of the genus Vestalenula Rossetti & Martens, 1998 (Crustacea, Ostracoda, Darwinulidae), with the description of a new species, V. carinata n. sp., from the island of Florianópolis, Brazil RICARDO L. PINTO1,5, CARLOS E. F. ROCHA2, GIAMPAOLO ROSSETTI3 & KOEN MARTENS4 1Laboratory of Micropaleontology, Institute of Geosciences, University of Brasília, ICC Central – ASS339/10, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasilia – DF, Brazil 2Department of Zoology, Institute of Biosciences, University of São Paulo, Rua do Matão, trav. 14, n. 101, CEP 05508-900, São Paulo, Brazil 3University of Parma, Department of Life Sciences, Viale Parco Area delle Scienze 11A, I-43124 Parma, Italy 4Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium, and University of Ghent, Department of Biology, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium 5Corresponding author. E-mail: [email protected] Abstract The genus Vestalenula is the most species rich in the putative ancient asexual ostracod Family Darwinulidae. Several new Recent species were described from various continents, mostly based on carapace shape and structure. These species were found in a variety of aquatic and (semi-) terrestrial habitats, including springs, streams, interstitial waters, leaf litter in for- ests and in splash zones of waterfalls. Here, we describe V. c ar ina ta n.
    [Show full text]