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Colonizacion Por Invertebrados De Macrofitos Emergentes Durante Su Descomposicion En El Rio Parana
Colonizacih por invertebrados de macr~$?tos emergentes durante su descomposicih en el rio Parami Alicia Por DE NEIFF (1) y Yolanda BRUQUETAS DE ZOZAYA (1) RESUMEN La colonizaci6n de la broza de Polygonum acuminatum y Panicum elephantipes fue esludiada en un brazo secundario del rio Parana que entra en la isla Choui. Las pérdidas de peso SECOfueron medidas debajo del agua (a 2 m de profundidad), utilizando la técnica de las bolsas de broza. La abundancia de inverfebrados que colonizan el detrito fue expresada por bolsa de broza y por g de peso seco remanenie. Los coeficientes de decaimiento de P. ac.uminatum y P. elephantipes, estimados en base a 50 dias de descomposicion, fueron 0,017 y 0,0085 respectivamente. Las densidades de 10s invertebrados aumentaron con la progresiva descomposicion de las plantas. Hubo una correlacion linear negativa entre el peso seco remanente y el nrimero de invertebrados por g de broza remanente. Las maximas densidades fueron menores que 17 invertebrados por g de broza remanente. Una disminucion de la densidad fue observada después de 10s 24 dias de incubacidn. cuando el rio Parami inundo la isla Choui. Durante 10s primeros 7 dias recolectores y predatores tuvieron abundancia relafiva semejantes en el material de ambas especies. Los colonizadores mas abundantes fueron Chironomus SP.,‘ Dicrotendipes sp, g Ablabesmyia sp. Los colectores filtradores (Cyclesthe,ria hislopii y Cythe.ridella ilosvayi) fueron dominantes a 10s 30 dias de incubation. PALABRAS ~LAVES: Decomposicion - Colonizacion por invertebrados - Macrofîtos - Sudamerica - Agua dulce. RÉSUMÉ COLONISATION PAR LES INVERTÉBRÉS DE MACROPHYTE~ ÉMERGÉS DURANT LEUR DÉCOMPOSITION DANS LE RIO PARANA La colonisation de Polygonum ac.uminatum et de Panicum elephantipes en décomposition a été étudié dans un bras secondaire du Rio Paranci qui pénètre dans l’île de Choui. -
December 2011
Ellipsaria Vol. 13 - No. 4 December 2011 Newsletter of the Freshwater Mollusk Conservation Society Volume 13 – Number 4 December 2011 FMCS 2012 WORKSHOP: Incorporating Environmental Flows, 2012 Workshop 1 Climate Change, and Ecosystem Services into Freshwater Mussel Society News 2 Conservation and Management April 19 & 20, 2012 Holiday Inn- Athens, Georgia Announcements 5 The FMCS 2012 Workshop will be held on April 19 and 20, 2012, at the Holiday Inn, 197 E. Broad Street, in Athens, Georgia, USA. The topic of the workshop is Recent “Incorporating Environmental Flows, Climate Change, and Publications 8 Ecosystem Services into Freshwater Mussel Conservation and Management”. Morning and afternoon sessions on Thursday will address science, policy, and legal issues Upcoming related to establishing and maintaining environmental flow recommendations for mussels. The session on Friday Meetings 8 morning will consider how to incorporate climate change into freshwater mussel conservation; talks will range from an overview of national and regional activities to local case Contributed studies. The Friday afternoon session will cover the Articles 9 emerging science of “Ecosystem Services” and how this can be used in estimating the value of mussel conservation. There will be a combined student poster FMCS Officers 47 session and social on Thursday evening. A block of rooms will be available at the Holiday Inn, Athens at the government rate of $91 per night. In FMCS Committees 48 addition, there are numerous other hotels in the vicinity. More information on Athens can be found at: http://www.visitathensga.com/ Parting Shot 49 Registration and more details about the workshop will be available by mid-December on the FMCS website (http://molluskconservation.org/index.html). -
The Malacological Society of London
ACKNOWLEDGMENTS This meeting was made possible due to generous contributions from the following individuals and organizations: Unitas Malacologica The program committee: The American Malacological Society Lynn Bonomo, Samantha Donohoo, The Western Society of Malacologists Kelly Larkin, Emily Otstott, Lisa Paggeot David and Dixie Lindberg California Academy of Sciences Andrew Jepsen, Nick Colin The Company of Biologists. Robert Sussman, Allan Tina The American Genetics Association. Meg Burke, Katherine Piatek The Malacological Society of London The organizing committee: Pat Krug, David Lindberg, Julia Sigwart and Ellen Strong THE MALACOLOGICAL SOCIETY OF LONDON 1 SCHEDULE SUNDAY 11 AUGUST, 2019 (Asilomar Conference Center, Pacific Grove, CA) 2:00-6:00 pm Registration - Merrill Hall 10:30 am-12:00 pm Unitas Malacologica Council Meeting - Merrill Hall 1:30-3:30 pm Western Society of Malacologists Council Meeting Merrill Hall 3:30-5:30 American Malacological Society Council Meeting Merrill Hall MONDAY 12 AUGUST, 2019 (Asilomar Conference Center, Pacific Grove, CA) 7:30-8:30 am Breakfast - Crocker Dining Hall 8:30-11:30 Registration - Merrill Hall 8:30 am Welcome and Opening Session –Terry Gosliner - Merrill Hall Plenary Session: The Future of Molluscan Research - Merrill Hall 9:00 am - Genomics and the Future of Tropical Marine Ecosystems - Mónica Medina, Pennsylvania State University 9:45 am - Our New Understanding of Dead-shell Assemblages: A Powerful Tool for Deciphering Human Impacts - Sue Kidwell, University of Chicago 2 10:30-10:45 -
Gundlachia Radiata (Guilding, 1828): First Record Of
ISSN 1809-127X (online edition) © 2011 Check List and Authors Chec List Open Access | Freely available at www.checklist.org.br Journal of species lists and distribution N Mollusca, Gastropoda, Heterobranchia, Ancylidae, Gundlachia radiata (Guilding, 1828): First record of ISTRIBUTIO occurrence for the northwestern region of Argentina D 1* 2 RAPHIC Ximena Maria Constanza Ovando , Luiz Eduardo Macedo de Lacerda and Sonia Barbosa dos G 2 EO Santos G N O 1 Facultad de Ciencias Naturales e Instituto Miguel Lillo. Miguel Lillo 205. CP 4000 Tucumán, Argentina. 2 Universidade do Estado do Río de Janeiro, Instituto de Biologia Roberto Alcantara Gomes, Laboratório de Malacologia. Rua São Francisco Xavier OTES 524. PHLC 525/2, CEP 20550-900, Rio de Janeiro, RJ, Brasil. N * Corresponding author. E-mail: [email protected] Abstract: Gundlachia radiata (Guilding, 1828), in northwestern region (Jujuy province), Argentina. Adult and juveniles specimens of this freshwater limpet were collected in In the present paper we report for the first time the presence of point of occurrence of G. radiata in South America. As a result, the distributional range of this species is increased and the two temporary water bodies. This record represents the first report of this species in Argentina but also is the southernmost species richness of Ancylidae in Argentina is incremented to a total of seven species classified in four genera. The Ancylidae sensu latum are freshwater pulmonate snails, characterized by a pateliform shell. Ancylidae are cosmopolitan, and according to Santos (2003) there are seven genera in South America: Anisancylus Pilsbry, 1924; Gundlachia Pfeiffer, 1849; Hebetancylus Pilsbry, 1913; Uncancylus Pilsbry, 1913; Burnupia Walker, 1912; Ferrissia Walker, 1913 and Laevapex Walker, 1903. -
Malacología Latinoamericana. Moluscos De Agua Dulce De Argentina
Malacología Latinoamericana. Moluscos de agua dulce de Argentina Alejandra Rumi, Diego E. Gutiérrez Gregoric, Verónica Núñez & Gustavo A. Darrigran División Zoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n°, 1900, La Plata, Buenos Aires, Argentina; [email protected], [email protected], [email protected], [email protected] Recibido 28-VI-2006. Corregido 14-II-2007. Aceptado 27-VII-2007. Abstract: Latin American Malacology. Freshwater Mollusks from Argentina. A report and an updated list with comments on the species of freshwater molluscs of Argentina which covers an area of 2 777 815 km2 is presented. Distributions of Gastropoda and Bivalvia families, endemic, exotic, invasive as well as entities of sanitary importance are also studied and recommendations on their conservation are provided. Molluscs related to the Del Plata Basin have been thoroughly studied in comparison to others areas of the country. This fauna exhibits relatively the biggest specific richness and keeps its affinity with the fauna of other regions of the basin in areas of Paraguay and Brasil. The 4 500 records of molluscs considered in this paper arise from the study of the collections of Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Buenos Aires; Museo de La Plata, La Plata and Fundación “Miguel Lillo”, Tucumán. These institutions keep very important collections of molluscs in southern South America. Field information has recently been obtained and localities cited by other authors are also included in the data base. Until today, 166 species have been described, 101 belonging to 10 families of Gastropoda and 65 to 7 of Bivalvia. -
Mollusca: Gastropoda: Pulmonata: Basommatophora) Revista De Biología Tropical, Vol
Revista de Biología Tropical ISSN: 0034-7744 [email protected] Universidad de Costa Rica Costa Rica Barbosa dos Santos, Sonia Estado atual do conhecimento dos ancilídeos na América do Sul (Mollusca: Gastropoda: Pulmonata: Basommatophora) Revista de Biología Tropical, vol. 51, núm. 3, 2003, pp. 191-223 Universidad de Costa Rica San Pedro de Montes de Oca, Costa Rica Available in: http://www.redalyc.org/articulo.oa?id=44911879011 Abstract Ancylids are widespreaded pateliforms basommatophorans in lentic and lotic continental freshwater habitats. This paper shows a list of South American species based on literature revision and personal observations about systematic and morphology as well as some morphological, biological, ecological and paleontological data. Seven genera and at least thirteen good species are found: Anisancylus dutrae (Santos, 1994); Anisancylus obliquus (Broderip & Sowerby, 1832); Burnupia ingae Lanzer, 1991; Burnupia sp.; Ferrissia gentilis Lanzer, 1991; Ferrissia sp.; Gundlachia bakeri Pilsbry, 1913; Gundlachia radiata (Guilding, 1828); Gundlachia ticaga (Marcus & Marcus, 1962); Hebetancylus moricandi (d¿Orbigny, 1837); Laevapex sp.; Uncancylus concentricus (d´Orbigny, 1835) and Uncancylus crequii (Bavay, 1904). Gundlachia leucaspis (Ancey, 1901); Gundlachia lutzi Walker, 1925; Gundlachia saulcyana (Bourguignat, 1853); Hebetancylus philippianus (Biese, 1948); Laevapex vazi Santos, 1989; Uncancylus foncki (Philippi, 1866) and Uncancylus patagonicus (Biese, 1948) need to be revised. Anatomical data show that SouthAmericanancylids are not closed related to Ancylus fluviatilis Müller, 1774. It is necessary to improve the knowledgement specially about morphology, biology, geographical distribution and genetics in order to assess the true systematic position ofthe called neotropical genera (Anisancylus Pilsbry, 1924; Gundlachia Pfeiffer, 1849; Hebetancylus Pilsbry, 1913 and Uncancylus Pilsbry, 1913) and also Burnupia Walker, 1912 and Ferrissia Walker, 1903. -
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. -
Uncancylus Concentricus (D´Orbigny, 1835): Antecedentes De La Especie
Sociedad Malacológica de Chile (SMACH) Amici Molluscarum 19: 41-43 (2011) Uncancylus concentricus (d´Orbigny, 1835): antecedentes de la especie Carmen Fuentealba Jara Facultad de Ciencias Naturales y Oceanográficas, Departamento de Zoología, Universidad de Concepción, Chile. Casilla 160-C. E-mail: [email protected] Sistemática Clase Gastropoda Cuvier, 1797. diagnosis a nivel específico. La ovotestis presenta Subclase Pulmonata Cuvier, 1797. alrededor de 25 folículos, la vesícula seminal está Orden Basommatophora Keferstein, 1864. ubicada en la porción media del ovispermioducto. Familia Ancylidae Rafinesque, 1815. La próstata por lo general presenta cinco folículos Género Uncancylus Pilsbry, 1913. alargados (d´Orbigny, 1835; Clessin, 1882; Wurtz, Uncancylus concentricus (d´Orbigny, 1835). 1951; Hylton-Scott, 1963; Hubendick, 1964, 1967; Fernández, 1981; Castellanos, 1982; dos Santos 1995; Lanzer, 1994, 1996). Sinonimia Uncancylus concentricus ha sido relacionado con los siguientes nombres: Ancylus concentricus d´Orbigny, 1835. Ancylus culicoides d´Orbigny, 1835. Ancylus plagioxus Bourguignat, 1862. Ancylus rushii Pilsbry, 1897. Ancylus uncinatus Ancey, 1897. Hebetancylus concentricus Pilsbry, 1913. Velletia Fuhrmanni Piaget, 1914. Uncancylus ameliae Pilsbry, 1920. Uncancylus calverti Pilsbry, 1920. Gundlachia concentrica Hubendick, 1967. Descripción Figura1. Vista dorsal de la concha de Uncancylus concentricus . Ejemplar recolectado en lago Lleu-Lleu, Concha alta, transparente y delgada, con líneas de Región del Bío-Bío, Chile. crecimiento y estrías radiales, las cuales pueden presentarse algo difusas en algunos casos, espe- Figure 1. Dorsal view of the shell of Uncancylus cialmente cuando habita ambientes torrentosos. concentricus . Specimen collected from Lleu-Lleu Lake, Ápice agudo, bastante recurvado, desplazado hacia Bío-Bío Region, Chile. atrás desde el punto medio y flexionado sobre el lado derecho (Fig.1). -
Shell Morphology of the Freshwater Snail Gundlachia Ticaga (Gastropoda: Ancylidae) from Four Sites in Ilha Grande, Southeastern Brazil
ZOOLOGIA 28 (3): 334–342, June, 2011 doi: 10.1590/S1984-46702011000300007 Shell morphology of the freshwater snail Gundlachia ticaga (Gastropoda: Ancylidae) from four sites in Ilha Grande, southeastern Brazil Luiz Eduardo M. Lacerda1; Igor C. Miyahira1 & Sonia B. Santos1,2 1 Laboratório de Malacologia Límnica e Terrestre, Programa de Pós-Graduação em Ecologia e Evolução, Departamento de Zoologia, Universidade do Estado do Rio de Janeiro. Rua São Francisco Xavier 524, PHLC, sala 525/2, Maracanã, 20550-900 Rio de Janeiro, RJ, Brazil. 2 Corresponding author. E-mail: [email protected] ABSTRACT. The freshwater snail Gundlachia ticaga (Marcus & Marcus, 1962) is widely distributed in Brazil, but its morphology has been poorly studied. We compared the shell morphology of samples from four sites (Vila do Abraão, Vila de Provetá, Parnaioca and Praia do Sul) in Ilha Grande (Angra dos Reis, state of Rio de Janeiro) in order to evaluate differences within and among four populations. We used nine morphometric characters representing shell size and shape. To analyze shell morphology we considered aperture shape, sculpture of teleoconch, apex carving and position. The resulting dataset was correlated by Pearson´s linear correlation and shell differences among populations were tested using ANOVA and Discriminant Function Analysis. The results showed that there is significant variation among popula- tions concerning shell shape and morphology. Shells from preserved localities (Praia do Sul and Parnaioca) and shells from highly modified environments (Vila do Abraão and Vila de Provetá) were the most similar to each other. Results from the visual assessment and from the discriminant analysis were almost identical. -
The Genus Anisancylus Pilsbry, 1924 (Planorboidea, Ancylinae) in South America: Species Distribution and New Records
13 4 267 Ovando et al DISTRIBUTION SUMMARY Check List 13 (4): 267–275 https://doi.org/10.15560/13.4.267 The genus Anisancylus Pilsbry, 1924 (Planorboidea, Ancylinae) in South America: species distribution and new records Ximena M. C. Ovando, Caroline S. Richau, Sonia B. Santos Universidade do Estado do Rio de Janeiro (UERJ), Instituto de Biologia Roberto Alcantara Gomes, Rua São Francisco Xavier 524, PHLC, sala 525/2, CEP 20550-900, Maracanã, RJ, Brazil. Corresponding author: Ximena M. C. Ovando, [email protected] Abstract Information on the distribution of Anisancylus Pilsbry, 1924 in South America is provided. For first time, we re- corded A. dutrae (Santos 1994) in Minas Gerais state and 2 new localities in northeastern Brazil. Anisancylus obliquus (Broderip & Sowerby, 1832) is widely distributed in Chile, Peru, central and southern Argentina, Uruguay and south- ern Brazil while A. dutrae is restricted to Brazil. This freshwater genus shows a disjunct distribution in South America that could be explained by tectonics and evolution of the basins. To understand this peculiar distributional pattern, additional studies should be performed combining biogeographic and phylogeographic analyses. Key words Mollusca; Gastropoda; freshwater snails; limpets; watersheds; Neotropical Region. Academic editor: Rodrigo B. Salvador | Received 24 December 2016 | Accepted 5 June 2017 | Published 14 August 2017 Citation: Ovando XMC, Richau CS, Santos SB (2017) The genus Anisancylus Pilsbry, 1924 (Planorboidea, Ancylinae) in South America: species distribution and new records. Check List 13 (4): 267–275. https://doi.org/10.15560/13.4.275 Introduction 1993; Santos 2000; Zarges 2006), Peru (Ohlweiler and Lanzer 1993), Uruguay (Formica Corsi 1900, Ohlweiler Anisancylus was established by Pilsbry (1924), based on and Lanzer 1993, Scarabino 2004) and Argentina (Fernán- the morphology of the shell’s apex and the radula. -
(Gastropoda: Basommatophora) I. The
73( MALACOLOGIA, 1(1): 55-72 CYTOTAXONOMIC STUDIES OF FRESHWATER LIMPETS (GASTROPODA: BASOMMATOPHORA) I. THE EUROPEAN LAKE LIMPET, ACROLOXUS LACUSTRIS 1 by J. B. Burch 2 ABSTRACT Acroloxus lacustris (Linnaeus) is a freshwater limpet common to Europe, northern Asia and Caucasia. It has nearly always been assigned to the basom- matophoran family Ancylidae, and hence is generally regarded as one of the most specialized and phylogenetically advanced basommatophorans. It is shown in this paper that in regard to certain details ot cytology, A. lacustris should not be considered closely related to other Ancylidae, but rather placed in a family by itself, the Acroloxidae, a conclusion corroborated by other authors on morphological grounds. Indeed, the various cytological differences would tend to further separate Acroloxus from other Basommatophora. The dif- ferences observed consist in the large size of the various cells of spermatogenesis, the greater volume ratio of chromatin to cytoplasm, the relatively large size of the chromosomes and the morphology of the mature sperm, whose heads are long and thread-like, not bullet- or turnip-shaped like those found in other basommatophor - an snails. In addition, the chromosome number (n=18), although characteristic of the Basommatophora in general, is different from that found in other freshwater limpets (x or basic haploid number-45 in the Ancylinae-Ferrissiinae; n=17 in the Laevapecinae). The mitotic chromosomes of A. lacustris are metacentric as characteristic of all Basommatophora; 6 pairs (including the 2 largest and the smallest) are medianly constricted; the other 12 pairs are submedianly or subterminally con- stricted. This is the first time the caryotype of any Euthyneuran snail has been accurately determined and figured. -
Ferrissia Fragilis (Tryon, 1863): a Freshwater Snail Cryptic Invader in Brazil Revealed by Morphological and Molecular Data
Aquatic Invasions (2015) Volume 10, Issue 2: 157–168 doi: http://dx.doi.org/10.3391/ai.2015.10.2.04 Open Access © 2015 The Author(s). Journal compilation © 2015 REABIC Research Article Ferrissia fragilis (Tryon, 1863): a freshwater snail cryptic invader in Brazil revealed by morphological and molecular data Luiz Eduardo Macedo de Lacerda1*, Caroline Stahnke Richau1, Cesar R.L. Amaral2, Dayse Aparecida da Silva2, Elizeu Fagundes Carvalho2 and Sonia Barbosa dos Santos1 1Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcantara Gomes, Departamento de Zoologia, Laboratório de Malacologia Límnica e Terrestre, Rua São Francisco Xavier, 524, PHLC, sala 525/2 CEP: 20550-900,Brazil 2Departamento de Ecologia, Laboratório de Diagnóstico por DNA. Rua São Francisco Xavier, 524, PHLC, CEP: 20550-900, Brazil E-mail: [email protected] (LEML), [email protected] (CSR), [email protected] (CRLA), [email protected] (DAS), [email protected] (EFC), [email protected] (SBS) *Corresponding author Received: 23 July 2014 / Accepted: 23 December 2014 / Published online: 19 January 2015 Handling editor: Vadim Panov Abstract The results of our study confirm the occurrence of the cryptic invader Ferrissia fragilis (Tryon, 1863) in Brazil, a species of worldwide geographical distribution and with poorly known morphology that is pervasive in several countries. Specimens were collected in the states of Rio de Janeiro and Minas Gerais in southeastern Brazil. We describe their morphology, and analyze the similarity of haplotypes generated from these samples with those previously obtained for F. fragilis. Shell morphology was compared by light and scanning microscopy. Soft parts of stained dissected specimens were studied under the stereomicroscope.