DOCSLIB.ORG

Nominal Taxa of Freshwater Mollusca from Southeast Asia Described by Dr

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Nominal Taxa of Freshwater Mollusca from Southeast Asia Described by Dr Ecologica Montenegrina 41: 73-83 (2021) This journal is available online at: www.biotaxa.org/em http://dx.doi.org/10.37828/em.2021.41.11 https://zoobank.org/urn:lsid:zoobank.org:pub:2ED2B90D-4BF2-4384-ABE2-630F76A1AC54 Nominal taxa of freshwater Mollusca from Southeast Asia described by Dr. Nguyen N. Thach: A brief overview with new synonyms and fixation of a publication date IVAN N. BOLOTOV1,2, EKATERINA S. KONOPLEVA1,2,*, ILYA V. VIKHREV1,2, MIKHAIL Y. GOFAROV1,2, MANUEL LOPES-LIMA3,4,5, ARTHUR E. BOGAN6, ZAU LUNN7, NYEIN CHAN7, THAN WIN8, OLGA V. AKSENOVA1,2, ALENA A. TOMILOVA1, KITTI TANMUANGPAK9, SAKBOWORN TUMPEESUWAN10 & ALEXANDER V. KONDAKOV1,2 1N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Northern Dvina Emb. 23, 163000 Arkhangelsk, Russia. 2Northern Arctic Federal University, Northern Dvina Emb. 17, 163002 Arkhangelsk, Russia. 3CIBIO/InBIO – Research Center in Biodiversity and Genetic Resources, University of Porto, Campus Agrário de Vairão, Rua Padre Armando Quintas 7, 4485-661 Vairão, Portugal. 4CIIMAR/CIMAR – Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal. 5SSC/IUCN – Mollusc Specialist Group, Species Survival Commission, International Union for Conservation of Nature, c/o The David Attenborough Building, Pembroke Street, CB2 3QZ Cambridge, United Kingdom. 6North Carolina Museum of Natural Sciences, 11 West Jones St., Raleigh, NC 27601, United States of America 7Fauna & Flora International – Myanmar Programme, Yangon, Myanmar. 8 Department of Zoology, Dawei University, Dawei, Tanintharyi Region, Myanmar. 9Department of Science, Faculty of Science and Technology, Loei Rajabhat University, Loei, Thailand. 10Department of Biology, Faculty of Science, Mahasarakham University, Maha Sarakham, Thailand. *Corresponding author: [email protected] Received: 27 February 2021│ Accepted by V. Pešić: 21 April 2021 │ Published online: 26 April 2021. In this correspondence, we present a summary of taxonomic names of freshwater Mollusca introduced by Dr. Nguyen N. Thach, an enthusiastic and productive malacologist from Vietnam. We show that this researcher described one new genus and 12 new nominal species of freshwater molluscs from Southeast Asia. Two of these nominal species, Sinanodonta hunganhi Thach, 2016 and Lanceolaria bogani Thach, 2016 (Bivalvia: Unionidae), were already considered junior synonyms of S. jourdyi (Morlet, 1886) and L. fruhstorferi (Dautzenberg, 1900), respectively (Do et al. 2018; Đặng and Hố 2019). Here, we propose one more synonym for the invasive Golden Apple Snail as follows: Pomacea canaliculata (Lamarck, 1822) [=Pomacea thachi Huber in Thach, 2020 syn. nov.] (Gastropoda: Ampullariidae). Furthermore, we establish the formal synonymy for the following taxa: Taia Annandale, 1918 [=Boganmargarya Thach, 2018 syn. nov.]; Taia shanensis (Kobelt, 1909) [=Boganmargarya huberi Thach, 2018 syn. nov.] (Gastropoda: Viviparidae); Brotia henriettae (Gray in Griffith & Pidgeon, 1833) [=Brotia frankhuberi Thach, 2020 syn. nov.; Brotia bogani Thach & Huber in Thach, 2020 syn. nov.] (Gastropoda: Pachychilidae); Pila pesmei (Morlet, 1889) Ecologica Montenegrina, 41, 2021, 73-83 FRESHWATER MOLLUSCA DESCRIBED BY DR. NGUYEN N. THACH [=Pila huberi Thach, 2020 syn. nov.] (Gastropoda: Ampullariidae); and Paludomus andersoniana Nevill, 1877 [=Paludomus huberi Thach, 2020 syn. nov.] (Gastropoda: Paludomidae). Additionally, four nominal species are treated here as taxa inquirenda: Melanoides thachi Huber in Thach, 2020 (Gastropoda: Thiaridae), Trochoita frankohleri Thach & Huber in Thach, 2020 (Gastropoda: Viviparidae), Paracrostoma huberi Thach, 2018 (Gastropoda: Pachychilidae), and Pseudodon artbogani Thach & Huber in Thach, 2020 (Bivalvia: Unionidae). We also show that the publication date written on the title page of the book “New Shells of South Asia. Volume 2” (Thach, 2020a) is a bit misleading and that this book appeared in the printed form on 23 June 2020. The latter date is fixed here as the date of availability of taxonomic names introduced in this work. Finally, we present an annotated checklist of freshwater Mollusca described by N. N. Thach with approximate coordinates of the type localities and reference to corresponding river drainage basins. Nguyen N. Thach is a productive amateur malacologist, who initially published several faunal reviews and guides on Mollusca from Vietnam (Thach 2005, 2007, 2012). These works were considered an important source of taxonomic and distributional information on the regional malacofauna, at least for freshwater taxa (Do et al. 2018). Later, this author described multiple new taxa of marine, terrestrial, and freshwater molluscs from Southeast Asia in a series of papers and books (e.g., Thach 2016a, 2016b, 2017, 2018, 2020a). In summary, these works contain descriptions of one new genus and 12 new nominal species of freshwater Mollusca (Appendix). The new species-group names were attributed to three bivalves and nine gastropods. Several of these species were co-authored/authored by Franz Huber, who is an amateur shell collector from Austria (Thach 2020a). All the Mollusca taxa under discussion conform to the requirements of the International Code of Zoological Nomenclature and must be considered taxonomically available names (see Appendix). The holotypes of these nominal species were deposited in the following museums: North Carolina Museum of Natural Sciences [NCSM], Raleigh, North Carolina, United States of America (8 species); Muséum National d’Histoire Naturelle [MNHN], Paris, France (2 species); British Museum of Natural History [NHMUK], London, United Kingdom (1 species); Royal Belgian Institute of Natural Sciences [IRSNB], Brussels, Belgium (1 species). The protologues contain color images of the type series of each new taxon (Thach 2016b, 2016c, 2018, 2020a). It is nice to see that four names are dedicated to Dr. Arthur Bogan, a prominent American malacologist, who is working in the NCSM (Thach 2016c, 2018, 2020a; see Appendix for detail). These names are as follows: Pseudodon artbogani Thach & Huber in Thach, 2020 and Lanceolaria bogani Thach, 2016 [=L. fruhstorferi (Dautzenberg, 1900)] (Bivalvia: Unionidae), Brotia bogani Thach & Huber in Thach, 2020 (Gastropoda: Pachychilidae), and the genus Boganmargarya Thach, 2018 (Gastropoda: Viviparidae). Although a complete reappraisal of N. N. Thach’s freshwater Mollusca will be published elsewhere, here we would discuss and revise a few remarkable nomenclatural cases which appeared in this work. These examples mostly arose because the author overlooked several historical works on the target taxa. In particular, one genus and five nominal species were described from Lake Inle in Myanmar as follows: Boganmargarya Thach, 2018; Boganmargarya huberi Thach, 2018; Brotia frankhuberi Thach, 2020; B. bogani Thach & Huber in Thach, 2020; Melanoides thachi Huber in Thach, 2020; and Paludomus huberi Thach, 2020 (see Appendix). This lake and surrounding water bodies were a focus of comprehensive surveys, the results of which were published in a special volume of “Records of the Indian Museum” (Vol. 14, 1918) edited by the Director of the Zoological Survey of India Dr. Nelson Annandale. This 214-page volume contains 13 chapters characterizing the geography, geology, natural history, and fauna of this lake in detail (Annandale 1918a). Three chapters comprise the results of taxonomic and morphological research on freshwater malacofauna from the lake (Annandale 1918b, 1918c; Prashad 1918), including the comprehensive “Aquatic Molluscs of the Inle Lake and connected waters” with numerous shell images of gastropods and bivalves (Annandale 1918b). Regrettable, however, N. N. Thach overlooked those historical works, presenting a thorough taxonomic revision of freshwater molluscs from Lake Inle with descriptions of taxa from several families such as Viviparidae, Pachychilidae, Thiaridae, Paludomidae, and others. Hence, a genus and five nominal species described by N. N. Thach from this lake could represent junior synonyms of some already known taxa, and certainly need a revision. The genus Boganmargarya was introduced on the basis of conchological features alone. In the diagnosis, it was compared with Tchangmargarya He, 2013 and Margarya Nevill, 1877 (Thach, 2018). Unfortunately, the author was not aware of the genus Taia Annandale, 1918 that was described from 74 BOLOTOV ET AL. Myanmar. This genus was established for a group of peculiar viviparids from the Salween and Irrawaddy river basins, reaching the maximum species diversity in Lake Inle (Annandale 1918b). In the original description, Annandale (1918b: 124) wrote that “The shells of these remarkable species exhibit affinities both with Vivipara (s.s.) and with Margarya, Nevill; they also have some resemblance to those of Tulotoma, Haldeman”. Furthermore, Annandale (1918b: 124) developed a key for identification of the 11 fossil and recent Taia species from the Shan State of Myanmar based on conchological features. Using this key, we found that the holotype of Boganmargarya huberi undoubtedly belongs to Taia shanensis (Kobelt, 1909). The formal synonymy is proposed here as follows: Taia shanensis (Kobelt, 1909) [=Boganmargarya huberi Thach, 2018 syn. nov.]; and Taia Annandale, 1918 [=Boganmargarya Thach, 2018 syn. nov.] (Gastropoda: Viviparidae). The status of Brotia frankhuberi
Load more

Recommended publications
  • Molecular Phylogenetic Evidence That the Chinese Viviparid Genus Margarya (Gastropoda: Viviparidae) Is Polyphyletic
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Springer - Publisher Connector Article SPECIAL ISSUE June 2013 Vol.58 No.18: 21542162 Adaptive Evolution and Conservation Ecology of Wild Animals doi: 10.1007/s11434-012-5632-y Molecular phylogenetic evidence that the Chinese viviparid genus Margarya (Gastropoda: Viviparidae) is polyphyletic DU LiNa1, YANG JunXing1*, RINTELEN Thomas von2*, CHEN XiaoYong1 & 3 ALDRIDGE David 1 State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China; 2 Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung an der Humboldt-Universität zu Berlin, Berlin 10115, Germany; 3 Aquatic Ecology Group, Department of Zoology, Cambridge University, Downing Street, Cambridge CB2 3EJ, UK Received February 28, 2012; accepted May 25, 2012; published online February 1, 2013 We investigated the phylogeny of the viviparid genus Margarya, endemic to Yunnan, China, using two mitochondrial gene frag- ments (COI and 16S rRNA). The molecular phylogeny based on the combined dataset indicates that Margarya is polyphyletic, as two of the three well-supported clades containing species of Margarya also comprise species from other viviparid genera. In one clade, sequences of four species of Margarya even cluster indiscriminately with those of two species of Cipangopaludina, indi- cating that the current state of Asian viviparid taxonomy needs to be revised. Additionally, these data suggest that shell evolution in viviparids is complex, as even the large and strongly sculptured shells of Margarya, which are outstanding among Asian viviparids, can apparently be easily converted to simple smooth shells.
    [Show full text]
  • Gastropoda, Pleuroceridae), with Implications for Pleurocerid Conservation
    Zoosyst. Evol. 93 (2) 2017, 437–449 | DOI 10.3897/zse.93.14856 museum für naturkunde Genetic structuring in the Pyramid Elimia, Elimia potosiensis (Gastropoda, Pleuroceridae), with implications for pleurocerid conservation Russell L. Minton1, Bethany L. McGregor2, David M. Hayes3, Christopher Paight4, Kentaro Inoue5 1 Department of Biological and Environmental Sciences, University of Houston Clear Lake, 2700 Bay Area Boulevard MC 39, Houston, Texas 77058 USA 2 Florida Medical Entomology Laboratory, Institute of Food and Agricultural Sciences, University of Florida, 200 9th Street SE, Vero Beach, Florida 32962 USA 3 Department of Biological Sciences, Eastern Kentucky University, 521 Lancaster Avenue, Richmond, Kentucky 40475 USA 4 Department of Biological Sciences, University of Rhode Island, 100 Flagg Road, Kingston, Rhode Island 02881 USA 5 Texas A&M Natural Resources Institute, 578 John Kimbrough Boulevard, 2260 TAMU, College Station, Texas 77843 USA http://zoobank.org/E6997CB6-F054-4563-8C57-6C0926855053 Corresponding author: Russell L. Minton ([email protected]) Abstract Received 7 July 2017 The Interior Highlands, in southern North America, possesses a distinct fauna with nu- Accepted 19 September 2017 merous endemic species. Many freshwater taxa from this area exhibit genetic structuring Published 15 November 2017 consistent with biogeography, but this notion has not been explored in freshwater snails. Using mitochondrial 16S DNA sequences and ISSRs, we aimed to examine genetic struc- Academic editor: turing in the Pyramid Elimia, Elimia potosiensis, at various geographic scales. On a broad Matthias Glaubrecht scale, maximum likelihood and network analyses of 16S data revealed a high diversity of mitotypes lacking biogeographic patterns across the range of E.
    [Show full text]
  • Evolution of the Pachychilidae TROSCHEL, 1857 (Chaenogastropoda, Cerithioidea) – from the Tethys to Modern Tropical Rivers 41
    44 44 he A Rei Series A/ Zitteliana An International Journal of Palaeontology and Geobiology Series A /Reihe A Mitteilungen der Bayerischen Staatssammlung für Pa lä on to lo gie und Geologie 44 An International Journal of Palaeontology and Geobiology München 2004 Zitteliana Umschlag 44 1 18.01.2005, 10:04 Uhr Zitteliana An International Journal of Palaeontology and Geobiology Series A/Reihe A Mitteilungen der Bayerischen Staatssammlung für Pa lä on to lo gie und Geologie 44 CONTENTS/INHALT REINHOLD R. LEINFELDER & MICHAEL KRINGS Editorial 3 DIETRICH HERM Herbert HAGN † 5 KAMIL ZÁGORŠEK & ROBERT DARGA Eocene Bryozoa from the Eisenrichterstein beds, Hallthurm, Bavaria 17 THORSTEN KOWALKE Evolution of the Pachychilidae TROSCHEL, 1857 (Chaenogastropoda, Cerithioidea) – from the Tethys to modern tropical rivers 41 HERBERT W. SCHICK The stratigraphical signifi cance of Cymaceras guembeli for the boundary between Platynota Zone and Hypselocyclum Zone, and the correlation of the Swabian and Franconian Alb 51 GÜNTER SCHWEIGERT, RODNEY M. FELDMANN & MATTHIAS WULF Macroacaena franconica n. sp. (Crustaceae: Brachyura: Raninidae) from the Turonian of S Germany 61 JÜRGEN KRIWET & STEFANIE KLUG Late Jurassic selachians (Chondrichthyes, Elasmobranchii) from southern Germany: Re-evaluation on taxonomy and diversity 67 FELIX SCHLAGINTWEIT Calcareous green algae from the Santonian Hochmoos Formation of Gosau (Northern Calcareous Alps, Austria, Lower Gosau Group) 97 MICHAEL KRINGS & HELMUT MAYR Bassonia hakelensis (BASSON) nov. comb., a rare non-calcareous
    [Show full text]
  • Some Freshwater Mollusca from Ceylon with Notes on Their
    CORE Metadata, citation and similar papers at core.ac.uk Provided by Aquatic Commons Bull. Fish. Res. Stn., Ceylon. Vol. 20, No.2, ]Jp. 135-140, Dec0m6er, 1969 Soine Freshwater Mollusca fro1n Ceylon 'vith Notes on their Distribution and Biology By C. H. FEHNANDO INTRODUCTION Very few records of freshwater molluscs of Ceylon are available in recent publications and 'l>lthough they are of importance as food for fishes and vectors of parasites -vve know little of their role in these ca.pacities in Ceylon. The present paper is to be considered more as a pointer to the group than as a study of the freshwater molluscs of Ceylon. The author collected freshwater molhiscs during surveys made for the study of systematics and distribution of various freshwater invertebrates. Some of this material together with specimens collected by colleagues was sent to Dr. W. S. S. Van Benthem-.Jutting formerly of the Rijksmuseum, Amsterdam. This material was thoroughly studied and identified by her. Also some material was sent to the late Dr. L. A. W. C. Vemnans of Leiden on whose clea,th the material was deposited in the Rijksmuseum, Leiden. The author was able to examine the records of this material identified by workers in Leiden. Material of freshwater molluscs purchased by the Museum in Leiden and labelled Ceylon was also seen by the author. I have made no Berious attempt to sort out synonomy. Dming the period 1952-1969 I have made ob::;ervations on the distribution 1:md abundance of freshwater molluscs in Ceylon. I have included some remarks ba,sed on these observations.
    [Show full text]
  • Abstract Volume
    ABSTRACT VOLUME August 11-16, 2019 1 2 Table of Contents Pages Acknowledgements……………………………………………………………………………………………...1 Abstracts Symposia and Contributed talks……………………….……………………………………………3-225 Poster Presentations…………………………………………………………………………………226-291 3 Venom Evolution of West African Cone Snails (Gastropoda: Conidae) Samuel Abalde*1, Manuel J. Tenorio2, Carlos M. L. Afonso3, and Rafael Zardoya1 1Museo Nacional de Ciencias Naturales (MNCN-CSIC), Departamento de Biodiversidad y Biologia Evolutiva 2Universidad de Cadiz, Departamento CMIM y Química Inorgánica – Instituto de Biomoléculas (INBIO) 3Universidade do Algarve, Centre of Marine Sciences (CCMAR) Cone snails form one of the most diverse families of marine animals, including more than 900 species classified into almost ninety different (sub)genera. Conids are well known for being active predators on worms, fishes, and even other snails. Cones are venomous gastropods, meaning that they use a sophisticated cocktail of hundreds of toxins, named conotoxins, to subdue their prey. Although this venom has been studied for decades, most of the effort has been focused on Indo-Pacific species. Thus far, Atlantic species have received little attention despite recent radiations have led to a hotspot of diversity in West Africa, with high levels of endemic species. In fact, the Atlantic Chelyconus ermineus is thought to represent an adaptation to piscivory independent from the Indo-Pacific species and is, therefore, key to understanding the basis of this diet specialization. We studied the transcriptomes of the venom gland of three individuals of C. ermineus. The venom repertoire of this species included more than 300 conotoxin precursors, which could be ascribed to 33 known and 22 new (unassigned) protein superfamilies, respectively. Most abundant superfamilies were T, W, O1, M, O2, and Z, accounting for 57% of all detected diversity.
    [Show full text]
  • Seasonal Reproductive Anatomy and Sperm Storage in Pleurocerid Gastropods (Cerithioidea: Pleuroceridae) Nathan V
    989 ARTICLE Seasonal reproductive anatomy and sperm storage in pleurocerid gastropods (Cerithioidea: Pleuroceridae) Nathan V. Whelan and Ellen E. Strong Abstract: Life histories, including anatomy and behavior, are a critically understudied component of gastropod biology, especially for imperiled freshwater species of Pleuroceridae. This aspect of their biology provides important insights into understanding how evolution has shaped optimal reproductive success and is critical for informing management and conser- vation strategies. One particularly understudied facet is seasonal variation in reproductive form and function. For example, some have hypothesized that females store sperm over winter or longer, but no study has explored seasonal variation in accessory reproductive anatomy. We examined the gross anatomy and fine structure of female accessory reproductive structures (pallial oviduct, ovipositor) of four species in two genera (round rocksnail, Leptoxis ampla (Anthony, 1855); smooth hornsnail, Pleurocera prasinata (Conrad, 1834); skirted hornsnail, Pleurocera pyrenella (Conrad, 1834); silty hornsnail, Pleurocera canaliculata (Say, 1821)). Histological analyses show that despite lacking a seminal receptacle, females of these species are capable of storing orientated sperm in their spermatophore bursa. Additionally, we found that they undergo conspicuous seasonal atrophy of the pallial oviduct outside the reproductive season, and there is no evidence that they overwinter sperm. The reallocation of resources primarily to somatic functions outside of the egg-laying season is likely an adaptation that increases survival chances during winter months. Key words: Pleuroceridae, Leptoxis, Pleurocera, freshwater gastropods, reproduction, sperm storage, anatomy. Résumé : Les cycles biologiques, y compris de l’anatomie et du comportement, constituent un élément gravement sous-étudié de la biologie des gastéropodes, particulièrement en ce qui concerne les espèces d’eau douce menacées de pleurocéridés.
    [Show full text]
  • A New Freshwater Snail (Gastropoda, Pomatiopsidae) Endemic to Fuxian Lake (Yunnan, China) Identified, Based on Morphological and DNA Evidence
    Biodiversity Data Journal 8: e57218 doi: 10.3897/BDJ.8.e57218 Taxonomic Paper A new freshwater snail (Gastropoda, Pomatiopsidae) endemic to Fuxian Lake (Yunnan, China) identified, based on morphological and DNA evidence Ling Shi‡‡, Yu Shu , Chen Qiang‡‡, Ping Xu , Ying Tian‡,§, Yaqing Chang ‡ ‡ Key Laboratory of Mariculture & Stock Enhancement in North China Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, China § Dalian Shell Museum, Dalian, China Corresponding author: Ying Tian ([email protected]), Yaqing Chang ([email protected]) Academic editor: Alexander M. Weigand Received: 04 Aug 2020 | Accepted: 23 Oct 2020 | Published: 03 Nov 2020 Citation: Shi L, Shu Y, Qiang C, Xu P, Tian Y, Chang Y (2020) A new freshwater snail (Gastropoda, Pomatiopsidae) endemic to Fuxian Lake (Yunnan, China) identified, based on morphological and DNA evidence. Biodiversity Data Journal 8: e57218. https://doi.org/10.3897/BDJ.8.e57218 ZooBank: urn:lsid:zoobank.org:pub:C1FF9D49-158C-4D86-A3D4-8E8818CC2DD8 Abstract Background Lacunopsis Deshayes, 1876 is restricted to South Asia and shows a remarkable regional distribution. Fifteen species have been reported from the lower Mekong River area of Laos, Cambodia, Thailand and Vietnam. Two species, Lacunopsis auris Y.-Y. Liu, Y.-X. Wang & W.-Z. Zhang, 1980 and L. yunnanensis Y.-Y. Liu, Y.-X. Wang & W.-Z. Zhang, 1980 occur in the Yunnan Province of China. The most recent treatments of Lacunopsis date back to the 1970s and 1980s, therefore detailed information on anatomy and DNA analysis is lacking. © Shi L et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
    [Show full text]
  • Modelling Spatio-Temporal Changes of Benthic Macroinvertebrate Communities in Asian and European Rivers Ratha Sor
    Modelling spatio-temporal changes of benthic macroinvertebrate communities in Asian and European rivers Ratha Sor To cite this version: Ratha Sor. Modelling spatio-temporal changes of benthic macroinvertebrate communities in Asian and European rivers. Earth Sciences. Université Paul Sabatier - Toulouse III; Universiteit Gent, 2017. English. NNT : 2017TOU30148. tel-01832089 HAL Id: tel-01832089 https://tel.archives-ouvertes.fr/tel-01832089 Submitted on 6 Jul 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. THÈSE En vue de l’obtention du DOCTORAT DE L’UNIVERSITÉ DE TOULOUSE Délivré par : Université Toulouse 3 Paul Sabatier (UT3 Paul Sabatier) Cotutelle internationale avec : Ghent University (UGent), Belgium Présentée et soutenue par : Ratha SOR Le Lundi 10 juillet 2017 Titre : Modélisation des changements spatio‐temporels des communautés de macroinvertébrés benthiques dans les rivières d'Asie et d'Europe ED SEVAB : Écologie, biodiversité et évolution Unité de recherche : Évolution et Diversité Biologique (UT3 Paul Sabatier, France) Aquatic Ecology (UGent, Belgium) Directeur(s) de Thèse : Prof Sovan LEK (Université Toulouse 3 Paul Sabatier, France) Prof Peter GOETHALS (Ghent University, Belgium) Dr Pieter BOETS (Ghent University, Belgium) Rapporteurs : Prof Philippe USSEGLIO‐POLATERA (University of Lorraine, France) Dr Nam SO (Mekong River Commission, Laos PDR) Prof.
    [Show full text]
  • Key Determinants of Freshwater Gastropod Diversity and Distribution: the Implications for Conservation and Management
    water Article Key Determinants of Freshwater Gastropod Diversity and Distribution: The Implications for Conservation and Management Mi-Jung Bae 1 and Young-Seuk Park 2,* 1 Biodiversity Research Team, Freshwater Biodiversity Research Bureau, Nakdonggang National Institute of Biological Resources, Sangju, Gyeongsangbuk-do 37242, Korea; [email protected] 2 Department of Biology, Kyung Hee University, Dongdaemun, Seoul 02447, Korea * Correspondence: [email protected]; Tel.: +82-2-961-0946 Received: 2 June 2020; Accepted: 30 June 2020; Published: 4 July 2020 Abstract: Freshwater organisms are facing threats from various natural and anthropogenic disturbances. Using data sampled on a nationwide scale from streams in South Korea, we identified the crucial environmental factors influencing the distribution and abundance of freshwater gastropods. We used nonmetric multidimensional scaling and the random forest model to evaluate the relationships between environmental factors and gastropod assemblages. Among the 30 recorded species, two invasive gastropod species (Pomacea canaliculata and Physa acuta) have enlarged their distribution (10.4% and 57.3% frequency of occurrence, respectively), and were found to be widespread in streams and rivers. Our results revealed that the most influential factor in the distribution of gastropod assemblages was the ratio of cobble (%) in the substrate composition, although meteorological and physiographical factors were also important. However, the main environmental factors influencing species distribution varied among species according to habitat preference and environmental tolerance. Additionally, anthropogenic disturbance caused a decrease in the distribution of endemic species and an increase in the spatial distribution of invasive species. Finally, the results of the present study provide baseline information for planning successful strategies to maintain and conserve gastropod diversity when facing anthropogenic disturbance, as well as understanding the factors associated with the establishment of invasive species.
    [Show full text]
  • Trophic Specialisation Reflected by Radular Tooth Material Properties in An
    Krings et al. BMC Ecol Evo (2021) 21:35 BMC Ecology and Evolution https://doi.org/10.1186/s12862-021-01754-4 RESEARCH ARTICLE Open Access Trophic specialisation refected by radular tooth material properties in an “ancient” Lake Tanganyikan gastropod species fock Wencke Krings1,2* , Marco T. Neiber1, Alexander Kovalev2, Stanislav N. Gorb2 and Matthias Glaubrecht1 Abstract Background: Lake Tanganyika belongs to the East African Great Lakes and is well known for harbouring a high pro- portion of endemic and morphologically distinct genera, in cichlids but also in paludomid gastropods. With about 50 species these snails form a fock of high interest because of its diversity, the question of its origin and the evolutionary processes that might have resulted in its elevated amount of taxa. While earlier debates centred on these paludomids to be a result of an intralacustrine adaptive radiation, there are strong indications for the existence of several lineages before the lake formation. To evaluate hypotheses on the evolution and radiation the detection of actual adaptations is however crucial. Since the Tanganyikan gastropods show distinct radular tooth morphologies hypotheses about potential trophic specializations are at hand. Results: Here, based on a phylogenetic tree of the paludomid species from Lake Tanganyika and adjacent river systems, the mechanical properties of their teeth were evaluated by nanoindentation, a method measuring the hard- ness and elasticity of a structure, and related with the gastropods’ specifc feeding substrate (soft, solid, mixed). Results identify mechanical adaptations in the tooth cusps to the substrate and, with reference to the tooth morphology, assign distinct functions (scratching or gathering) to tooth types.
    [Show full text]
  • Working Group on Introductions and Transfers of Marine Organisms (WGITMO)
    ICES Advisory Committee on the Marine Environment ICES CM 2004/ACME:05 Ref. E, G Report of the Working Group on Introductions and Transfers of Marine Organisms (WGITMO) 25–26 March 2004 Cesenatico, Italy This report is not to be quoted without prior consultation with the General Secretary. The document is a report of an Expert Group under the auspices of the International Council for the Exploration of the Sea and does not necessarily represent the views of the Council. TABLE OF CONTENTS Section Page 1 OPENING OF THE MEETING AND INTRODUCTION........................................................................................ 1 2 TERMS OF REFERENCE, ADOPTION OF AGENDA, SELECTION OF RAPPORTEUR .................................. 1 2.1 Terms of Reference......................................................................................................................................... 1 2.2 Status of the terms of references ..................................................................................................................... 1 2.3 Adoption of the Agenda.................................................................................................................................. 2 2.4 Selection of Rapporteur .................................................................................................................................. 2 3 REVIEW OF THE 2003 WGITMO REPORT........................................................................................................... 2 4 DISCUSSION PAPER OF THE EUROPEAN
    [Show full text]
  • Proceedings of the United States National Museum
    PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM issued SMITHSONIAN INSTITUTION U. S. NATIONAL MUSEUM Vol. 103 Washington : 1954 No. 3325 THE RELATIONSHIPS OF OLD AND NEW WORLD MELANIANS By J. P. E. Morrison Recent anatomical observations on the reproductive systems of certain so-called "melanian" fresh-water snails and their marine rela- tives have clarified to a remarkable degree the supergeneric relation- ships of these fresh-water forms. The family of Melanians, in the broad sense, is a biological ab- surdity. We have the anomaly of one fresh-water "family" of snails derived from or at least structurally identical in peculiar animal characters to and ancestrally related to three separate and distinct marine famiHes. On the other hand, the biological picture has been previously misunderstood largely because of the concurrent and convergent evolution of the three fresh-water groups, Pleuroceridae, Melanopsidae, and Thiaridae, from ancestors common to the marine families Cerithiidae, Modulidae, and Planaxidae, respectively. The family Melanopsidae is definitely known living only in Europe. At present, the exact placement of the genus Zemelanopsis Uving in fresh waters of New Zealand is uncertain, since its reproductive characters are as yet unknown. In spite of obvious differences in shape, the shells of the marine genus Modulus possess at least a well- indicated columellar notch of the aperture, to corroborate the biologi- cal relationship indicated by the almost identical female egg-laying structure in the right side of the foot of Modulus and Melanopsis. 273553—54 1 357 358 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los The family Pleuroceridae, fresh-water representative of the ancestral cerithiid stock, is now known to include species living in Africa, Asia, and the Americas.
    [Show full text]