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Invertebrate Responses to Large-Scale Change: Impacts of Eutrophication and Cataclysmic Earthquake Events in a Southern New Zealand Estuary
Invertebrate Responses to Large-Scale Change: Impacts of Eutrophication and Cataclysmic Earthquake Events in a Southern New Zealand Estuary A thesis submitted in partial fulfilment of the requirements for the degree of Doctorate of Philosophy in Ecology at the University of Canterbury, New Zealand Jennifer Erin Skilton 2013 Abstract Abstract Environmental stress and disturbance can affect the structure and functioning of marine ecosystems by altering their physical, chemical and biological features. In estuaries, benthic invertebrate communities play important roles in structuring sediments, influencing primary production and biogeochemical flux, and occupying key food web positions. Stress and disturbance can reduce species diversity, richness and abundance, with ecological theory predicting that biodiversity will be at its lowest soon after a disturbance with assemblages dominated by opportunistic species. The Avon-Heathcote Estuary in Christchurch New Zealand has provided a novel opportunity to examine the effects of stress, in the form of eutrophication, and disturbance, in the form of cataclysmic earthquake events, on the structure and functioning of an estuarine ecosystem. For more than 50 years, large quantities (up to 500,000m3/day) of treated wastewater were released into this estuary but in March 2010 this was diverted to an ocean outfall, thereby reducing the nutrient loading by around 90% to the estuary. This study was therefore initially focussed on the reversal of eutrophication and consequent effects on food web structure in the estuary as it responded to lower nutrients. In 2011, however, Christchurch was struck with a series of large earthquakes that greatly changed the estuary. Massive amounts of liquefied sediments, covering up to 65% of the estuary floor, were forced up from deep below the estuary, the estuary was tilted by up to a 50cm rise on one side and a corresponding drop on the other, and large quantities of raw sewage from broken wastewater infrastructure entered the estuary for up to nine months. -
Molecular Detection of Human Parasitic Pathogens
MOLECULAR DETECTION OF HUMAN PARASITIC PATHOGENS MOLECULAR DETECTION OF HUMAN PARASITIC PATHOGENS EDITED BY DONGYOU LIU Boca Raton London New York CRC Press is an imprint of the Taylor & Francis Group, an informa business CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2013 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S. Government works Version Date: 20120608 International Standard Book Number-13: 978-1-4398-1243-3 (eBook - PDF) This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmitted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. For permission to photocopy or use material electronically from this work, please access www.copyright.com (http://www.copyright.com/) or contact the Copyright Clearance Center, Inc. -
Parasite Effects on Growth of the Mud Whelk, Cominella
PARASITE EFFECTS ON GROWTH OF THE MUD WHELK, COMINELLA GLANDIFORMIS (REEVE,. 1874). A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Zoology. By Brett ~.esney t;"''' University of Canterbury, 1989. Some specimens of the mud whelk, Cominella glandiformis, pictured with the principal means of dissection. TABLE OF CONTENTS. Abstract Page 1 General Introduction Page 2 Chapter 1 - A field study of Comine77a g7andiformis and its parasite fauna from the Avon-Heathcote estuary, with emphasis on the relationship between host size and parasite prevalence Page 12 Chapter 2 - General histology, and anthelmintic elimination of parasite infection in Comine77a g7andiformis Page 29 Chapter 3 - A brief description of Urosporidium sp., hyperparasite of a trematode from Comine77a g7 andiformi s Page 50 Chapter 4 - A comparison of laboratory growth rates for infected and non-infected Comine77a g7andiformis Page 59 General Discussion and Conclusion Page 72 Acknowledgements Page 81 References Page 82 Appendix - Scatterplots and correlation statistics for Comine77a g7andiformi.s collected from the field Page 88 1. ABSTRACT. The mud whelk, Comine77a glandiformis, from the Avon-Heathcote estuary in Christchurch, is infected by three species of larval digenean parasite. The prevalence of infection in C. g7andiformis was found to increase with snail length for each parasite species. This introduced the possibility that gigantism could be occurring, and investigation of this formed the study basis. Differences were apparent between sexes of snail, and juvenile and adult individuals, with respect to both infection and position on the shore. For the analyses used, a combination of length and shell weight was found to be the most effective measure of snail size, but wet and dry tissue weights could also be used. -
Equal Partnership: Two Trematode Species, Not One, Manipulate the Burrowing Behaviour of the New Zealand Cockle, Austrovenus Stutchburyi
Journal of Helminthology (2004) 78, 195–199 DOI: 10.1079/JOH2003231 Equal partnership: two trematode species, not one, manipulate the burrowing behaviour of the New Zealand cockle, Austrovenus stutchburyi C. Babirat, K.N. Mouritsen and R. Poulin* Department of Zoology, University of Otago, PO Box 56, Dunedin, New Zealand Abstract Metacercariae of the trematode Curtuteria australis (Echinostomatidae) accumulate in the foot of the New Zealand cockle Austrovenus stutchburyi, severely impairing the cockle’s ability to burrow under the sediments. This results in increased predation by birds on cockles, and thus enhanced transmission rates of the parasite to its bird definitive hosts. This host manipulation by the trematode is costly: fish regularly crop the tip of the foot of cockles stranded on the sediment surface, killing any metacercariae they ingest. A second, previously undetected trematode species (characterized by 23 collar spines) co-existing with C. australis, has been found in the foot of cockles in the Otago Harbour, South Island, New Zealand. The relative abundance of the two species varies among localities, with the identity of the numerically dominant species also changing from one locality to the next. Both C. australis and the new species have a strong preference for encysting in the tip of the cockle’s foot, where their impact on the burrowing ability of the host is greatest, and where they both face the risk of cropping by fish. Results indicate that these two species are ecological equivalents, and their combined numbers determine -
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. -
Prerequisites for Flying Snails: External Transport Potential of Aquatic Snails by Waterbirds Author(S): C
Prerequisites for flying snails: external transport potential of aquatic snails by waterbirds Author(s): C. H. A. van Leeuwen and G. van der Velde Source: Freshwater Science, 31(3):963-972. 2012. Published By: The Society for Freshwater Science URL: http://www.bioone.org/doi/full/10.1899/12-023.1 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Freshwater Science, 2012, 31(3):963–972 ’ 2012 by The Society for Freshwater Science DOI: 10.1899/12-023.1 Published online: 17 July 2012 Prerequisites for flying snails: external transport potential of aquatic snails by waterbirds 1,2,3,5 2,4,6 C. H. A. van Leeuwen AND G. van der Velde 1 Department of Aquatic -
Spined Echinostoma Spp.: a Historical Review
ISSN (Print) 0023-4001 ISSN (Online) 1738-0006 Korean J Parasitol Vol. 58, No. 4: 343-371, August 2020 ▣ INVITED REVIEW https://doi.org/10.3347/kjp.2020.58.4.343 Taxonomy of Echinostoma revolutum and 37-Collar- Spined Echinostoma spp.: A Historical Review 1,2, 1 1 1 3 Jong-Yil Chai * Jaeeun Cho , Taehee Chang , Bong-Kwang Jung , Woon-Mok Sohn 1Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea; 2Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul 03080, Korea; 3Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Korea Abstract: Echinostoma flukes armed with 37 collar spines on their head collar are called as 37-collar-spined Echinostoma spp. (group) or ‘Echinostoma revolutum group’. At least 56 nominal species have been described in this group. However, many of them were morphologically close to and difficult to distinguish from the other, thus synonymized with the others. However, some of the synonymies were disagreed by other researchers, and taxonomic debates have been continued. Fortunately, recent development of molecular techniques, in particular, sequencing of the mitochondrial (nad1 and cox1) and nuclear genes (ITS region; ITS1-5.8S-ITS2), has enabled us to obtain highly useful data on phylogenetic relationships of these 37-collar-spined Echinostoma spp. Thus, 16 different species are currently acknowledged to be valid worldwide, which include E. revolutum, E. bolschewense, E. caproni, E. cinetorchis, E. deserticum, E. lindoense, E. luisreyi, E. me- kongi, E. miyagawai, E. nasincovae, E. novaezealandense, E. -
Selfing and Outcrossing in a Parasitic Hermaphrodite Helminth (Trematoda, Echinostomatidae)
Heredity 77 (1996 1—8 Received 7 April 1995 Selfing and outcrossing in a parasitic hermaphrodite helminth (Trematoda, Echinostomatidae) SANDRINE TROUVE, FRANOIS RENAUDtI PATRICK DURAND & JOSEPH JOURDANE* Centre de Biologie et d'Ecologie Tropicale et Méditerranéenne, Laboratoire de Biologie Animale, CNRS URA 698, Université de Perpignan, Avenue de Villeneuve, 66860 Perpignan Cedex and fLaboratoire de Parasitologie Comparée, CNRS URA 698, USTL Montpe/lier II, Place E. Batailon, 34095 Montpe/lier Cedex 05, France Echinostomesare simultaneous hermaphrodite trematodes, parasitizing the intestine of verte- brates. They are able to self- and cross-inseminate. Using electrophoretic markers specific for three geographical isolates (strains) of Echinostoma caproni, we studied the outcrossing rate from a 'progeny-array analysis' by comparing the mother genotype with those of its progeny. In a simultaneous infection of a single mouse with two individuals of two different strains, each individual exhibits an unrestricted mating pattern involving both self- and cross-fertilization. The association in mice of two adults of the same strain and one adult of another strain shows a marked mate preference between individuals of the same isolate. From mice coinfected with one parent of the three isolates, each parent was shown to be capable of giving and receiving sperm to and from at least two different partners. Mating system polymorphism in our parasitic model is thus discussed in the context of the theories usually advanced. Keywords:assortativemating, -
Sequence and Structural Variation in the Genome of the Biomphalaria Glabrata Embryonic (Bge) Cell Line Nicolas J
Wheeler et al. Parasites & Vectors (2018) 11:496 https://doi.org/10.1186/s13071-018-3059-2 RESEARCH Open Access Sequence and structural variation in the genome of the Biomphalaria glabrata embryonic (Bge) cell line Nicolas J. Wheeler1, Nathalie Dinguirard1, Joshua Marquez2, Adrian Gonzalez2, Mostafa Zamanian1, Timothy P. Yoshino1 and Maria G. Castillo2* Abstract Background: The aquatic pulmonate snail Biomphalaria glabrata is a significant vector and laboratory host for the parasitic flatworm Schistosoma mansoni, an etiological agent for the neglected tropical disease schistosomiasis. Much is known regarding the host-parasite interactions of these two organisms, and the B. glabrata embryonic (Bge) cell line has been an invaluable resource in these studies. The B. glabrata BB02 genome sequence was recently released, but nothing is known of the sequence variation between this reference and the Bge cell genome, which has likely accumulated substantial genetic variation in the ~50 years since its isolation. Results: Here, we report the genome sequence of our laboratory subculture of the Bge cell line (designated Bge3), which we mapped to the B. glabrata BB02 reference genome. Single nucleotide variants (SNVs) were predicted and focus was given to those SNVs that are most likely to affect the structure or expression of protein-coding genes. Furthermore, we have highlighted and validated high-impact SNVs in genes that have often been studied using Bge cells as an in vitro model, and other genes that may have contributed to the immortalization of this cell line. We also resolved representative karyotypes for the Bge3 subculture, which revealed a mixed population exhibiting substantial aneuploidy, in line with previous reports from other Bge subcultures. -
Genetic Structure and Shell Shape Variation Within a Rocky Shore Whelk Suggest Both Diverging and Constraining Selection with Gene Flow
Biological Journal of the Linnean Society, 2018, XX, 1–17. With 4 figures. Downloaded from https://academic.oup.com/biolinnean/advance-article-abstract/doi/10.1093/biolinnean/bly142/5139735 by Massey University user on 25 October 2018 Genetic structure and shell shape variation within a rocky shore whelk suggest both diverging and constraining selection with gene flow MICHAEL R. GEMMELL1, STEVEN A. TREWICK1, JAMES S. CRAMPTON2,3, FELIX VAUX1, SIMON F. K. HILLS1, ELIZABETH E. DALY1, BRUCE A. MARSHALL4, ALAN G. BEU2, and MARY MORGAN-RICHARDS1*, 1Ecology Group, College of Sciences, Massey University, Palmerston North, New Zealand 2GNS Science, PO Box 30-368, Lower Hutt, New Zealand 3School of Geography, Environment & Earth Sciences, Victoria University, Victoria University of Wellington, PO Box 600, Wellington, New Zealand 4Museum of New Zealand Te Papa Tongarewa, Wellington, New Zealand Received 26 June 2018; revised 26 August 2018; accepted for publication 27 August 2018 Variation in snail shell shape has provided evolutionary biologists with excellent material for the study of local adaptation to local environments. However, the assumption that shell shape variation is evidence of distinct lineages (species) might have led to taxonomic inflation within some gastropod lineages. Here, we compare shell shape variation and genetic structure of two independent lineages of New Zealand rocky shore whelks in order to understand the process that leads to an unusual disjunct distribution. We examined the Buccinulum vittatum complex (three subspecies plus Buccinulum colensoi) using mitochondrial DNA sequences, 849 single nucleotide polymorphisms and geometric morphometric data on shell shape. Specimens within the range of B. colensoi shared nuclear markers and mitochondrial DNA haplotypes with the southern subspecies Buccinulum vittatum littorinoides, whereas the northern samples (Buccinulum vittatum vittatum) had distinct genotypes. -
Dispersal Ability, Habitat Characteristics, and Sea-Surface
Baptista et al. BMC Ecol Evo (2021) 21:128 BMC Ecology and Evolution https://doi.org/10.1186/s12862-021-01862-1 RESEARCH Open Access Dispersal ability, habitat characteristics, and sea-surface circulation shape population structure of Cingula trifasciata (Gastropoda: Rissoidae) in the remote Azores Archipelago L. Baptista1,2,3,4*, H. Meimberg1, S. P. Ávila2,3,4,5, A. M. Santos4,6 and M. Curto1,7 Abstract Background: In the marine realm, dispersal ability is among the major factors shaping the distribution of species. In the Northeast Atlantic Ocean, the Azores Archipelago is home to a multitude of marine invertebrates which, despite their dispersal limitations, maintain gene fow among distant populations, with complex evolutionary and biogeo- graphic implications. The mechanisms and factors underlying the population dynamics and genetic structure of non- planktotrophic gastropods within the Azores Archipelago and related mainland populations are still poorly under- stood. The rissoid Cingula trifasciata is herewith studied to clarify its population structure in the Northeast Atlantic Ocean and factors shaping it, with a special focus in intra-archipelagic dynamics. Results: Coupling microsatellite genotyping by amplicon sequencing (SSR-GBAS) and mitochondrial datasets, our results suggest the diferentiation between insular and continental populations of Cingula trifasciata, supporting previously raised classifcation issues and detecting potential cryptic diversity. The fnding of connectivity between widely separated populations was startling. In unique ways, dispersal ability, habitat type, and small-scale oceano- graphic currents appear to be the key drivers of C. trifasciata’s population structure in the remote Azores Archipelago. Dispersal as non-planktotrophic larvae is unlikely, but its small-size adults easily engage in rafting. -
Tese Daniele Acuña
UFRRJ INSTITUTO DE VETERINÁRIA CURSO DE PÓS-GRADUAÇÃO EM CIÊNCIAS VETERINÁRIAS TESE Morfologia dos Ovos e Estágios Larvais de Eurytrema coelomaticum (Giard & Billet, 1892) (Digenea, Dicrocoeliidae) e Análise Bioquímica da Interface Parasito-Primeiro Hospedeiro Intermediário, Bradybaena similaris (Férussac, 1821) (Gastropoda, Xanthonychidae) Daniele de Oliveira Franco Acuña 2011 UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO INSTITUTO DE VETERINÁRIA CURSO DE PÓS-GRADUAÇÃO EM CIÊNCIAS VETERINÁRIAS MORFOLOGIA DOS OVOS E ESTÁGIOS LARVAIS DE Eurytrema coelomaticum (GIARD & BILLET, 1892) (DIGENEA, DICROCOELIIDAE) E ANÁLISE BIOQUÍMICA DA INTERFACE PARASITO-PRIMEIRO HOSPEDEIRO INTERMEDIÁRIO, Bradybaena similaris (FÉRUSSAC, 1821) (GASTROPODA, XANTHONYCHIDAE) DANIELE DE OLIVEIRA FRANCO ACUÑA Sob a Orientação do Professor Doutor Jairo Pinheiro da Silva e Co-orientação das Professoras Doutoras Solange Viana Paschoal Blanco Brandolini e Aleksandra Menezes de Oliveira Tese submetida como requisito parcial para obtenção do grau de Doutora em Ciências, no Curso de Pós-Graduação em Ciências Veterinárias, Área de Concentração em Parasitologia Veterinária. Seropédica, RJ Julho de 2011 UFRRJ / Biblioteca Central / Divisão de Processamentos Técnicos 578.65 A189m Acuña, Daniele de Oliveira Franco, 1979-. T Morfologia dos ovos e estágios larvais de Eurytrema coelomaticum (Giard & Billet, 1892) (Digenea, Dicrocoeliidae) e análise bioquímica da interface parasito-primeiro hospedeiro intermediário, Bradybaena similaris (Férussac, 1821) (Gastropoda, Xanthonychidae) / Daniele de Oliveira Franco Acuña - 2011. 132 f.: il. Orientador: Jairo Pinheiro da Silva. Tese (Doutorado) – Universidade Federal Rural do Rio de Janeiro, Curso de Pós-Graduação em Ciências Veterinárias. Bibliografia: f. 96-111. 1. Parasitas – Teses. 2. Eurytrema coelomaticum - Morfologia – Teses. 3. Larva - Teses. I. Silva, Jairo Pinheiro da,1969-. II. Universidade Federal Rural do Rio de Janeiro.