DOCSLIB.ORG

Impacts of Ocean Acidification on Multiplication and Caste Organisation of Parasitic Trematodes in Their Gastropod Host

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Impacts of Ocean Acidification on Multiplication and Caste Organisation of Parasitic Trematodes in Their Gastropod Host Mar Biol (2016) 163:96 DOI 10.1007/s00227-016-2871-5 FEATURE ARTICLE Impacts of ocean acidification on multiplication and caste organisation of parasitic trematodes in their gastropod host Pauline Guilloteau1 · Robert Poulin1 · Colin D. MacLeod1 Received: 1 December 2015 / Accepted: 8 March 2016 © Springer-Verlag Berlin Heidelberg 2016 Abstract Ocean acidification is predicted to impact the may also impact transmission success and parasite abun- structure and function of all marine ecosystems in this cen- dance of some trematodes, with possible consequences for tury. As focus turns towards possible impacts on interac- marine communities and ecosystems. tions among marine organisms, its effects on the biology and transmission potential of marine parasites must be evaluated. In the present study, we investigate two marine Introduction trematode species (Philophthalmus sp. and Parorchis sp., both in the family Philophthalmidae) infecting two marine Since the preindustrial period, emissions of CO2 in the gastropods. These trematodes are unusual in that their asex- atmosphere have increased drastically, with atmospheric ually multiplying stages within snails display a division levels rising each year by 0.5 % (Solomon et al. 2007). As of labour, with two distinct castes, a large-bodied morph oceans play a major role in the processes driving the natu- producing infective stages and a smaller morph playing a ral carbon cycle, the current input of atmospheric CO2 is defensive role against other competing parasites. Using a buffered by oceanic uptake, amounting to nearly a third potentiometric ocean acidification simulation system, we of carbon added to the atmosphere from human activity in test the impacts of acidified seawater (7.8 and 7.6 pH) on the past 200 years (Fabry et al. 2008; Doney et al. 2009). the production of free-living infective stages (cercariae), Due to the equilibrium between atmospheric CO2 and dis- the size and survival of encysted resting stages (metacercar- solved oceanic CO2 at the water surface, the non-negligible iae), and the within-host division of labour measured as the input of dissolved CO2 is modifying seawater chemistry by ratio between numbers of the two morphs. In general, low changing the balance of different chemical reactions (Dick- pH conditions caused an increase in cercarial production son et al. 2007). These chemical changes lead to a reduc- and a reduction in metacercarial survival. The ratio of the tion in carbonate ion concentrations, but an increase in two castes within snail hosts tended to shift towards more concentrations of bicarbonate ions and hydrogen ions, thus of the smaller defensive morphs under low pH. However, lowering pH (i.e. pH log [H+]), a phenomenon known = − the observed effects of reduced pH were species specific as ocean acidification (OA). The main consequences for and not always unimodal. These results suggest that ocean marine ecosystems are a reduction in average seawater acidification can affect the biology of marine parasites and pH and a decline in the availability of calcium carbonate (CaCO3) used by many groups of marine organisms, such as molluscs, echinoderms, crustaceans, corals, and many Responsible Editor: T. Reusch. species of plankton that synthesise calcified structures (Orr Reviewed by A. Kostadinova and an undisclosed expert. et al. 2005). Moreover, the increase in hydrogen ions in seawater affects acid–base homoeostasis in several marine * Robert Poulin organisms (Pörtner et al. 2004), leading to more energy [email protected] required for maintenance of intra- and extra-cellular bal- 1 Department of Zoology, University of Otago, PO Box 56, ances. Surface-ocean pH has fallen by approximately 0.1 Dunedin 9054, New Zealand units to its present 8.1 pH value (Doney et al. 2009; Fabry 1 3 96 Page 2 of 10 Mar Biol (2016) 163:96 et al. 2008; Riebesell et al. 2010) and is predicted to drop labour, with the small rediae acting as ‘soldiers’ defending to approximately 7.6 by the year 2100 and to 7.4 by 2300 the redial colony against other parasites trying to establish (Intergovernmental Panel on Climate Change (IPCC) in the same snail host, and the large reproductive rediae 2014). produce cercariae that will leave the snail to complete the Research on the effects of OA is now founded on precise life cycle (Hechinger et al. 2011; Leung and Poulin 2011; understanding of carbonate chemical reactions and the use Lloyd and Poulin 2012, 2014; Mouritsen and Halvorsen of realistic OA simulation systems (Riebesell et al. 2010). 2015). As in social insects like ants and termites (Oster and From an ecological perspective, there is growing interest Wilson 1978), the ratio of small-to-large rediae is likely to in the more indirect effects of OA, for instance, effects on be optimised to yield maximum fitness, i.e. cercarial out- interspecific interactions such as predation, competition and put, for the colony. Earlier research has shown that external parasitism (Kroeker et al. 2013; McCormick et al. 2013; stressors can indeed affect the caste ratios of social trema- MacLeod and Poulin 2015). Parasites are often neglected in tode colonies (Lloyd and Poulin 2013). marine ecological research because of their small size. How- The present study investigates two trematode species, ever, parasites are diverse and abundant, and now known to both of the family Philophthalmidae: Philophthalmus sp. impact host population dynamics, interspecific interactions, (Martorelli et al. 2008) and Parorchis sp. (O’Dwyer et al. community structure, food web complexity and ecosystems 2014), which use the New Zealand gastropods Zeacumantus energetics (Sousa 1991; Poulin 1999; Mouritsen and Poulin subcarinatus and Austrolittorina cincta, respectively, as first 2002; Thompson et al. 2005; Kuris et al. 2008). There are intermediate host. Both are very common parasites of gas- many reasons to believe OA could impact parasites either tropods in New Zealand intertidal habitats, and their rediae directly or indirectly through their hosts, in ways that could infect the gonad and digestive tissue of the host, leading to change their interactions with their hosts and their influence its castration (Fredensborg et al. 2005). Both species display on ecosystems (MacLeod and Poulin 2012). a division of labour inside the first intermediate host (Leung In intertidal environments, parasitic trematodes are par- and Poulin 2011; Lloyd and Poulin 2012; Kamiya and Pou- ticularly abundant and known to affect the biology of the lin 2013; O’Dwyer et al. 2014). Cercariae of Philophthal- two or three host species involved in their complex life mus sp. and Parorchis sp. do not use a second intermediate cycle. Typically, adult worms live in the gut of a verte- host but instead leave the snail to encyst on a hard substrate, brate definitive host, such as a bird or fish, from where they such as the shell of other gastropods or seaweed (Lei and release eggs in host faeces (Galaktionov and Dobrovolskij Poulin 2011; Neal and Poulin 2012; O’Dwyer et al. 2014), 2003). Snails serve as first intermediate host, becoming in the process losing their tail and becoming metacercariae. infected after accidentally ingesting eggs or by free-swim- The survival of cercariae of both species, and metacercariae ming larvae hatched from eggs. Following asexual (clonal) at least in the case of Philophthalmus sp., is significantly multiplication within the snail host, free-swimming infec- lower under conditions of reduced pH (MacLeod and Poulin tive stages, or cercariae, emerge from snails in large num- 2015). However, the effects of OA on caste ratio and overall bers and seek a second intermediate host, which they pen- trematode colony fitness in these trematodes with division etrate and in which they encyst as metacercariae, to await of labour remain unexplored. ingestion by a suitable definitive host, in which they develop The main objective of this study was to experimentally into adult worms. In some trematode species, however, there assess the impact of OA on colony organisation and fitness is no second intermediate host; cercariae encyst on various in these two trematodes. Specifically, we test the effects of substrates and become metacercariae, awaiting ingestion by OA on cercarial output, metacercarial size, metacercarial a definitive host (Galaktionov and Dobrovolskij 2003). Mul- survival, and within-host colony structure measured as the tiple studies have documented how sensitive cercariae and relative numbers (ratio) of the two castes. Cercarial pro- metacercariae attached to external substrates are to abiotic duction and metacercarial survival are key steps in parasite conditions, such as temperature (Studer et al. 2010; Mor- transmission, and thus, our results have bearing not only ley and Lewis 2013), salinity (Lei and Poulin 2011) and pH on the social biology of these trematodes, but also on the (Koprivnikar et al. 2010; MacLeod and Poulin 2015). infection risk they pose for birds and snails. Here, we focus on how OA affects a recently discovered facet of trematode biology. In some species, the asexually multiplying stages within a snail intermediate host, known Methods as rediae, come in two morphotypes representing distinct castes: a larger-bodied reproductive caste and a smaller Snail collection and parasite identification non-reproductive caste (Hechinger et al. 2011; Leung and Poulin 2011; Miura 2012; Nielsen et al. 2014). Much In February and March 2015, Z. subcarinatus and A. cincta evidence indicates that this represents a true division of snails were collected by hand at low tide on the intertidal 1 3 Mar Biol (2016) 163:96 Page 3 of 10 96 mudflat of Lower Portobello Bay (LPB), Otago Harbour, 2-amino-2-hydroxy-1,3-propanediol (TRIS) and 2-ami- South Island, New Zealand (45°80′S, 170°66′E). Prior nopyridine (AMP), prepared in accordance with Dickson to the study, all snails were maintained in well-aerated 2 et al. (2007). To maintain appropriate seawater chemistry, L seawater aquaria (20 °C, >95 % oxygen, 8.05 pH) and i.e.
Load more

Recommended publications
  • Environmental Stressors Induced Strong Small-Scale Phenotypic
    bioRxiv preprint doi: https://doi.org/10.1101/2020.10.06.327767; this version posted March 11, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 1 Environmental stressors induced strong small-scale phenotypic 2 differentiation in a wide-dispersing marine snail 3 Nicolás Bonel1,2,3*, Jean-Pierre Pointier4 & Pilar Alda1,2 4 5 6 1 Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS—CCT—CONICET Bahía 7 Blanca), Camino de la Carrindanga km 7, Bahía Blanca 8000, Argentina. 8 9 10 2 Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina. 11 12 13 3 Centre d’Écologie Fonctionnelle et Évolutive, UMR 5175, CNRS—Université de Montpellier, 14 Université Paul-Valéry Montpellier—École Pratique des Hautes Études—IRD, 34293 Montpellier Cedex 15 05, France. 16 17 4 PSL Research University, USR 3278 CNRS–EPHE, CRIOBE Université de Perpignan, Perpignan, 18 France. 19 20 * To whom correspondence should be addressed: [email protected] (N. Bonel) 21 22 23 24 25 Running head: Small-scale phenotypic differentiation in a wide-dispersing snail 26 27 28 29 30 31 Key words: adaptive plasticity, shell characters, genital morphology, intertidal 32 zonation, contrasting selection pressures, planktotrophic snail, high dispersal potential. 33 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.10.06.327767; this version posted March 11, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission.
    [Show full text]
  • E Urban Sanctuary Algae and Marine Invertebrates of Ricketts Point Marine Sanctuary
    !e Urban Sanctuary Algae and Marine Invertebrates of Ricketts Point Marine Sanctuary Jessica Reeves & John Buckeridge Published by: Greypath Productions Marine Care Ricketts Point PO Box 7356, Beaumaris 3193 Copyright © 2012 Marine Care Ricketts Point !is work is copyright. Apart from any use permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission of the publisher. Photographs remain copyright of the individual photographers listed. ISBN 978-0-9804483-5-1 Designed and typeset by Anthony Bright Edited by Alison Vaughan Printed by Hawker Brownlow Education Cheltenham, Victoria Cover photo: Rocky reef habitat at Ricketts Point Marine Sanctuary, David Reinhard Contents Introduction v Visiting the Sanctuary vii How to use this book viii Warning viii Habitat ix Depth x Distribution x Abundance xi Reference xi A note on nomenclature xii Acknowledgements xii Species descriptions 1 Algal key 116 Marine invertebrate key 116 Glossary 118 Further reading 120 Index 122 iii Figure 1: Ricketts Point Marine Sanctuary. !e intertidal zone rocky shore platform dominated by the brown alga Hormosira banksii. Photograph: John Buckeridge. iv Introduction Most Australians live near the sea – it is part of our national psyche. We exercise in it, explore it, relax by it, "sh in it – some even paint it – but most of us simply enjoy its changing modes and its fascinating beauty. Ricketts Point Marine Sanctuary comprises 115 hectares of protected marine environment, located o# Beaumaris in Melbourne’s southeast ("gs 1–2). !e sanctuary includes the coastal waters from Table Rock Point to Quiet Corner, from the high tide mark to approximately 400 metres o#shore.
    [Show full text]
  • The Eye Fluke Philophthalmus Hegeneri (Digenea: Philophthalmidae)
    Kuwait J. Sci. Eng. 3171) pp. 119-133, 2004 The eye ¯uke Philophthalmus hegeneri Digenea: Philophthalmidae) in Kuwait Bay J. ABDUL-SALAM, B. S. SREELATHA AND H. ASHKANANI Department of Biological Sciences, Kuwait University, P. O. Box 5969, Safat, Kuwait 13060 ABSTRACT The eye ¯uke Philophthalmus hegeneri Penner and Fried, 1963 was reared from cercariae developing in the marine snail Cerithium scabridum in Kuwait Bay. Infected snails released megalurous cercariae which readily encysted in characteristically ¯ask-shaped cysts. Adult ¯ukes were recovered from the ocular orbit of experimentally infected domestic ducklings inoculated with excysted metacercariae. The adult and larval stages of the ¯uke are described and compared with those of the other marine-acquired Philophthalmus species. The metacercaria of the Kuwaiti isolate of P. hegeneri diers from those of an American isolate from Batillaria minima in the Gulf of Mexico in the process of encystment, and metacercarial cyst shape resembles those of P. larsoni from a congeneric snail, C. muscarum, from Florida, suggesting a close relationship. The present record signi®cantly extends the known geographical range of P. hegeneri and implicates a new intermediate host. Keywords: Digenea; Metacercaria; Philophthalmus hegeneri; Cerithium scabridum; Kuwait Bay. INTRODUCTION Members of the genus Philophthalmus Loose, 1899 7Philophthalmidae Travassos, 1918) are widely distributed eye ¯ukes of aquatic birds. The life cycle of Philophthalmus has been established through studies on species utilizing freshwater or marine snails as intermediate host 7Fisher & West 1958, Penner & Fried 1963, Howell & Bearup 1967, McMillan & Macy 1972, Dronen & Penner 1975, Radev et al. 2000). Although more than 36 Philophthalmus species have been reported, only P.
    [Show full text]
  • Las Prácticas Individuales Y La Práctica De Consenso En La Historia De La Helmintología: Un Estudio a Partir De La Filosofía De La Ciencia De Philip Kitcher
    Las prácticas individuales y la práctica de consenso en la historia de la helmintología: Un estudio a partir de la filosofía de la ciencia de Philip Kitcher Tesis doctoral Lic. Martín Orensanz Director: Dr. Guillermo Denegri Co-directora: Dra. Susana Gisela Lamas Ilustración del siglo XVI, del médico y cirujano Ambroise Paré. El texto que acompaña la imagen dice “La figura de un gusano que fue expelido mediante el vómito”. Ilustración del siglo XVII, del médico Edward Tyson. Se trata de una lombriz solitaria que fue encontrada en el intestino de un perro doméstico. ÍNDICE Introducción Capítulo 1 El conocimiento de los helmintos en la Época Antigua 1. Comentarios generales 2. Hipócrates 3. Aristóteles 4. La práctica de consenso en la Época Antigua Capítulo 2 La Edad Media 1. Comentarios generales 2. Avicena 3. Arnauld de Villaneuve 4. La práctica de consenso en la Edad Media Capítulo 3 El siglo XVI 1. Comentarios generales 2. Paracelso 3. Ambroise Paré 4. La práctica de consenso en el siglo XVI Capítulo 4 El siglo XVII 1. Comentarios generales 2. William Ramesey 3. Francesco Redi 4. Edward Tyson 5. Anthony van Leeuwenhoek 6. La práctica de consenso en el siglo XVII Capítulo 5 El siglo XVIII 1. Comentarios generales 2. Nicholas Andry de Boisregard 3. Antonio Vallisneri 4. Carlos Linneo 5. Marcus Elieser Bloch 6. Johann August Ephraim Goeze 7. La práctica de consenso en el siglo XVIII Capítulo 6 El siglo XIX 1. Comentarios generales 2. Karl Asmund Rudolphi 2 3. Johannes Japetus Steenstrup 4. Gottlieb Heinrich Friedrich Küchenmeister 5. Patrick Manson 6.
    [Show full text]
  • Larval Stages of Digenetic Flukes and Their Molluscan
    STUDIES ON THE INTERACTIONS BETWEEN LARVAL STAGES OF DIGENETIC FLUKES AND THEIR MOLLUSCAN HOSTS. MICHAEL ANTONY PRICE SUBMITTED IN ACCORDANCE WITH THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY THE UNIVERSITY OF LEEDS DEPARTMENT OF PURE AND APPLIED ZOOLOGY. MARCH 1984 Snails of the species Thais (Nucella) lapillus (L) were collected from Scarborough South Bay, and Robin Hoods Bay, North Yorkshire. The presence of the rediae of Parorchia acanthus. NICOLL (Digenea: PHILOPHTHALMIDAE) in T-,. lapillus individuals was previously associated with abnormal shell growth by Feare (1970a). His work has been extended to provide more conclusive evidence of parasitic gigantism in T, larAllus infested with P-,. acanthus-. - The energy increment and soft tissue mass increase associated with shell growth has been calculated for a sample of infested T, lapillus individuals. As reported by Cooley (1958) and Feare (1969) infestation with P_.. acanthus rediae progressively destroys the host gonad. The resultant reproductive saving was estimated for non-infested male and female T, lapillus from Robin Hoods Bay in 1981 and the energy values obtained were compared with estimates of the average energy loss from infested M., laDillus as a result of cercarial production and redial growth. The proportion of the whole body dry mass of infested M, lapillus. individuals contributed by the redial population was generally similar to the gonadal proportion of non-infested femalest but did not follow the same seasonal cycle. The digestive gland of infested dogwhelks was proportionally reduced from that of non-infested females in August only. The growth of redial populations within the hosts through the summer is suggested as a possible cause of host gigantism.
    [Show full text]
  • Four Marine Digenean Parasites of Austrolittorina Spp. (Gastropoda: Littorinidae) in New Zealand: Morphological and Molecular Data
    Syst Parasitol (2014) 89:133–152 DOI 10.1007/s11230-014-9515-2 Four marine digenean parasites of Austrolittorina spp. (Gastropoda: Littorinidae) in New Zealand: morphological and molecular data Katie O’Dwyer • Isabel Blasco-Costa • Robert Poulin • Anna Falty´nkova´ Received: 1 July 2014 / Accepted: 4 August 2014 Ó Springer Science+Business Media Dordrecht 2014 Abstract Littorinid snails are one particular group obtained. Phylogenetic analyses were carried out at of gastropods identified as important intermediate the superfamily level and along with the morpholog- hosts for a wide range of digenean parasite species, at ical data were used to infer the generic affiliation of least throughout the Northern Hemisphere. However the species. nothing is known of trematode species infecting these snails in the Southern Hemisphere. This study is the first attempt at cataloguing the digenean parasites Introduction infecting littorinids in New Zealand. Examination of over 5,000 individuals of two species of the genus Digenean trematode parasites typically infect a Austrolittorina Rosewater, A. cincta Quoy & Gaim- gastropod as the first intermediate host in their ard and A. antipodum Philippi, from intertidal rocky complex life-cycles. They are common in the marine shores, revealed infections with four digenean species environment, particularly in the intertidal zone representative of a diverse range of families: Philo- (Mouritsen & Poulin, 2002). One abundant group of phthalmidae Looss, 1899, Notocotylidae Lu¨he, 1909, gastropods in the marine intertidal environment is the Renicolidae Dollfus, 1939 and Microphallidae Ward, littorinids (i.e. periwinkles), which are characteristic 1901. This paper provides detailed morphological organisms of the high intertidal or littoral zone and descriptions of the cercariae and intramolluscan have a global distribution (Davies & Williams, 1998).
    [Show full text]
  • Soft-Bottom Benthic Communities Otago Harbour and Blueskin Bay
    ISSN 0083-7903, 80 (Print) ISSN 2538-1016; 80 (Online) ISS 0083-7903 Soft-bottom Benthic Communities m• Otago Harbour and Blueskin Bay, New Zealand by S. F. RAINER New Zealand Oceanographic Institute Memoir 80 1981 NEW ZEALAND DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH Soft-bottom Benthic Communities Otago Harbour and Blueskin Bay, New Zealand by S. F. RAINER Portobello Marine Laboratory, Portobello, New Zealand New Zealand Oceanographic Institute Memoir 80 1981 This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ ISSN 0083-7903 Received for publication: July 1974 <O Crown Copyright 1981 This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ CONTENTS Page LIST OF FIGURES 4 LIST OFTABLES 4 ABSTRACT 5 INTRODUCTION 6 SAMPLINGAND LABORA TORY METHODS 6 THEBENTinC ENVIRONMENT 7 General description and sample locations 7 Water temperature and salinity 8 Tides and currents 13 Sediments 14 Pollution 14 THEBENTiilC CoMMUNITIES. 14 Harbour mud corr.munity 14 Harbour fine sand community 15 Harbour stable shell-sand community 15 Harbour unstable sand community 16 Shallow off-shore fine sand community 20 DISCUSSION 21 The classification of benthic communities in a shallow-water deposit environment 21 The effect of shell and macroscopic algae on species composition 22 Patternsof diversity 24 Comparison with other shallow-water soft-bottom communities 28 ACKNOWLEDGMENTS 31 REFERENCES 31 APPENDICES 33 1.
    [Show full text]
  • 2006-2007 Intertidal Reef Biodiversity on Kangaroo
    2006-2007 Kangaroo Island Natural Resources Management Board INTERTIDAL REEF BIODIVERSITY Intertidal Reef Biodiversity on Kangaroo Island – 2007 ON KANGAROO ISLAND 1 INTERTIDAL REEF BIODIVERSITY ON KANGAROO ISLAND Oceans of Blue: Coast, Estuarine and Marine Monitoring Program A report prepared for the Kangaroo Island Natural Resources Management Board by Kirsten Benkendorff Martine Kinloch Daniel Brock June 2007 2006-2007 Kangaroo Island Natural Resources Management Board Intertidal Reef Biodiversity on Kangaroo Island – 2007 2 Oceans of Blue The views expressed and the conclusions reached in this report are those of the author and not necessarily those of persons consulted. The Kangaroo Island Natural Resources Management Board shall not be responsible in any way whatsoever to any person who relies in whole or in part on the contents of this report. Project Officer Contact Details Martine Kinloch Coast and Marine Program Manager Kangaroo Island Natural Resources Management Board PO Box 665 Kingscote SA 5223 Phone: (08) 8553 4980 Fax: (08) 8553 0122 Email: [email protected] Kangaroo Island Natural Resources Management Board Contact Details Jeanette Gellard General Manager PO Box 665 Kingscote SA 5223 Phone: (08) 8553 0111 Fax: (08) 8553 0122 Email: [email protected] © Kangaroo Island Natural Resources Management Board This document may be reproduced in whole or part for the purpose of study or training, subject to the inclusion of an acknowledgment of the source and to its not being used for commercial purposes or sale. Reproduction for purposes other than those given above requires the prior written permission of the Kangaroo Island Natural Resources Management Board.
    [Show full text]
  • GASTROPODA: THIARIDAE) EN MEDELLÍN, COLOMBIA Acta Biológica Colombiana, Vol
    Acta Biológica Colombiana ISSN: 0120-548X [email protected] Universidad Nacional de Colombia Sede Bogotá Colombia VERGARA, DANIELA; VELÁSQUEZ, LUZ ELENA LARVAS DE DIGENEA EN Melanoides tuberculata (GASTROPODA: THIARIDAE) EN MEDELLÍN, COLOMBIA Acta Biológica Colombiana, vol. 14, núm. 1, 2009, pp. 135-142 Universidad Nacional de Colombia Sede Bogotá Bogotá, Colombia Disponible en: http://www.redalyc.org/articulo.oa?id=319027882008 Cómo citar el artículo Número completo Sistema de Información Científica Más información del artículo Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Página de la revista en redalyc.org Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Acta biol. Colomb., Vol. 14 No. 1, 2009 135 - 142 LARVAS DE DIGENEA EN Melanoides tuberculata (GASTROPODA: THIARIDAE) EN MEDELLÍN, COLOMBIA Larval stages of digenea from Melanoides tuberculata (Gastropoda: Thiaridae) in Medellín, Colombia DANIELA VERGARA1, Microbióloga, Estudiante Ph. D.; LUZ ELENA VELÁSQUEZ1,2, Bióloga M.Sc. 1 Programa de Estudio y Control de Enfermedades Tropicales PECET. Sede de Investigación Universitaria SIU Universidad de Antioquia. Calle 62 No. 52-69. 2 Escuela de Microbiología/UdeA Correspondencia: Luz Elena Velásquez. [email protected] Sede de Investigación Universitaria SIU Universidad de Antioquia. Calle 62 No. 52-69, Torre 2, laboratorio 730. Teléfono: 219 65 14. Fax 219 65 11. Medellín, Colombia. Presentado 14 de agosto de 2008, aceptado 20 de octubre de 2008, correcciones 10 de diciembre de 2008. RESUMEN Se describen las larvas de digeneos que se obtuvieron en Melanoides tuberculata (Gastropoda: Thiaridae), molusco dulceacuícola del que se colectaron 125 especíme- nes en el lago del Jardín Botánico Joaquín Antonio Uribe de Medellín.
    [Show full text]
  • Cercariae in Molluscs Melanoides Kainarensis
    International Journal of Current Research and Review Research Article DOI: http://dx.doi.org/10.31782/IJCRR.2020.121421 Philophthalmus Lucipetus (Trematoda, Philophthalmidae) Cercariae in Molluscs IJCRR Melanoides Kainarensis Section: Life Sciences Sci. Journal Impact 1 1 Factor: 6.1 (2018) Ulugbek Abdulakimovich Shakarbaev , Firuza Djalaliddinovna Akramova , ICV: 90.90 (2018) Djalaliddin Azimovich Azimov1 1Institute of Zoology, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan. ABSTRACT . Cercariae of Philophthalmus lucipetus (Rudolphi, 1819) were detected in molluscs Melanoides kainarensis Starobogatov et Iz- zatullaev, 1980. Of the 4,629 examined individuals of M. kainarensis from Boshkhovuz, a warm body of water in the Karnabchul steppe (Nurabad District, Samarkand Province), 407 individuals (9.01%) were infected with cercariae and parthenitae of flukes from the genus Philophthalmus Looss, 1899, whose species was identified as Ph. lucipetus. Key Words: Melanoides kainarensis, Philophthalmus lucipetus, Parthenitae, Cercariae, Molluscs. INTRODUCTION MATERIALS AND METHODS The geographical range of Philophthalmus lucipetus 1 is quite This work was based on the results of faunistic and ex- wide. Populations of this trematode were recorded in many perimental research carried out in 2010-2019 to study the countries in Europe, Asia, Africa, and Americas in various fauna and morphology and biology of cercariae developing ecological groups of birds. Mature trematodes parastitise the in freshwater mollusks. The mollusks were collected from conjunctival sac and cause a grave disease in agricultural and a warm spring (Boshkhovuz in the Karnabchul steppe, Nu- game birds. In CIS countries this trematode species was re- rabad District, Samarkand province) following a commonly corded in Anser anser in Ukraine 2.
    [Show full text]
  • UC Santa Barbara Dissertation Template
    UC Santa Barbara UC Santa Barbara Electronic Theses and Dissertations Title Social organization in trematode parasitic flatworms Permalink https://escholarship.org/uc/item/2xg9s6xt Author Garcia Vedrenne, Ana Elisa Publication Date 2018 Supplemental Material https://escholarship.org/uc/item/2xg9s6xt#supplemental Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California UNIVERSITY OF CALIFORNIA Santa Barbara Social organization in trematode parasitic flatworms A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Ecology, Evolution and Marine Biology by Ana Elisa Garcia Vedrenne Committee in charge: Professor Armand M. Kuris, Chair Professor Kathleen R. Foltz Professor Ryan F. Hechinger Professor Todd H. Oakley March 2018 The dissertation of Ana Elisa Garcia Vedrenne is approved. _____________________________________ Ryan F. Hechinger _____________________________________ Kathleen R. Foltz _____________________________________ Todd H. Oakley _____________________________________ Armand M. Kuris, Committee Chair March 2018 ii Social organization in trematode parasitic flatworms Copyright © 2018 by Ana Elisa Garcia Vedrenne iii Acknowledgements As I wrap up my PhD and reflect on all the people that have been involved in this process, I am happy to see that the list goes on and on. I hope I’ve expressed my gratitude adequately along the way– I find it easier to express these feeling with a big hug than with awkward words. Nonetheless, the time has come to put these acknowledgements in writing. Gracias, gracias, gracias! I would first like to thank everyone on my committee. I’ve been lucky to have a committee that gave me freedom to roam free while always being there to help when I got stuck.
    [Show full text]
  • Marine Ecology Progress Series 290:109
    MARINE ECOLOGY PROGRESS SERIES Vol. 290: 109–117, 2005 Published April 13 Mar Ecol Prog Ser Impact of trematodes on host survival and population density in the intertidal gastropod Zeacumantus subcarinatus B. L. Fredensborg1, K. N. Mouritsen2, R. Poulin1,* 1Department of Zoology, University of Otago, PO Box 56, Dunedin, New Zealand 2Department of Marine Ecology, Institute of Biological Sciences, Aarhus University, Finlandsgade 14, 8200 Aarhus N, Denmark ABSTRACT: Ecological studies have demonstrated that parasites are capable of influencing various aspects of host life history and can play an important role in the structure of animal populations. We investigated the influence of infection by castrating trematodes on the reproduction, survival and population density of the intertidal snail Zeacumantus subcarinatus, using both laboratory and field studies. The results demonstrate a highly significant reduction in the reproductive output in heavily infected populations compared to populations with low trematode prevalence. A long-term labora- tory study showed reduced survival of infected snails compared to uninfected specimens, for snails held at 18 and 25°C. Furthermore, parasite-induced mortality in the field was inferred from a reduc- tion in prevalence of infection among larger size classes, indicating that infected individuals disap- pear from the population, although the effect of parasites varied between localities. A field survey from 13 localities including 2897 snails demonstrated that prevalence of castrating trematodes had a significant negative effect on both population density and biomass of Z. subcarinatus. This study pro- vides one of the first demonstrations of population-level effects of parasites on their hosts in the field. The results of this study emphasise the importance of castrating parasites as potential agents of pop- ulation regulation in host species with limited dispersal ability.
    [Show full text]