Rotifera: Monogononta) in Relation to Environmental Factors
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Rotifera: Monogononta) from Minorcan Inland Waters (Balearic Isles: Spain
CONTRIBUTION TO THE KNOWLEDGE OF THE ROTIFER FAUNA (ROTIFERA: MONOGONONTA) FROM MINORCAN INLAND WATERS (BALEARIC ISLES: SPAIN) J. De Manuel Departament d'Ecologia, Facultat de Biologia, Universitat de Barcelona. Avda. Diagonal 645, 08028 Barcelona. Spain. Keywords: Rotifera, new records, Baleanc, archipelago, biogeography, Spain. ABSTRACT Forty-four species of rotifers have been identified in Minorca inland waters. Permanent ponds, temporary pools, flowing waters, and artificial pools were sampled. Most of the species are new records for the island and twenty- nine are new to the Balearic Isles. The families Brachionidae and Lecanidae provide half of the taxa. Keratella procurva (Thorpe, 1912), which is considered a subtropical species, occurred with a widespread distnbution in the island. Different taxa and «Formenkreis» found are mentioned. Original drawings and scanning photomicrographs of some species are presented. Typical assemblages of populations from every environment are also described. INTRODUCTION ficult if we are focusing on the rotifer commu- nities. Traditionally, rotifers have been considered as Rotifers from the Balearic Isles have been in- cosmopolitan organisms of scanty biogeographical sufficiently studied, the only records are from the interest. However, an important degree of ende- works on freshwater biology by MARGALEF (1951, micity has been obsewed in species found in iso- 1952, 1953), DE RIDDER (1967), and PRETUS lated areas from severa1 latitudes (DUMONT,1983). (1989). It suggests that the zoogeographical significance The present paper adds new records to the of rotifers cannot be undewalued. knowledge of the rotifer fauna of Minorca. It in- Production of resting eggs, which may be vestigates the occurrence of the species in the dif- carried by air or accidentally by migrating birds, ferent habitat categories sampled, and discusses as well as by «human transport~,is an efficient some biogeographical particularities. -
The Taxonomy of Brachionus Plicatilis Species Complex (Rotifera: Monogononta) from the Southern Kerala (India) with a Note on Their Repro- Ductive Preferences
J. Mar. Biol. Ass. India, 48 (I) : 6 - 13, January - June 2006 The taxonomy of Brachionus plicatilis species complex (Rotifera: Monogononta) from the Southern Kerala (India) with a note on their repro- ductive preferences P. S Anitha and Rani Mary George Central Marine Fisheries Research Institute, P. B. No. 1603, Ernakulam North P. O., Cochin-682 018, India E. mail: [email protected] Abstract This paper deals with the species of Brackionu.s plicatilis complex (Rotifera: Monogononta) found in a brackishwater lake,Veli-Aakulam, in Southern Kerala. Morphological and reproductive potential studies revealed that these rotifers have sigiificant morphological distinction with regard to ecological preferences. The three related rotifers in our study were classified as Brachionu.~plicatilis Miiller, 1786, B. rotundifi)rmi.s Tschugunoff, 1921 and B. murrayi Fadeew, 1925. The fine morphology and morphometric data revealed that taxonomic characters were constant enough to recognize three well-defined morphologies and B. rrlurrayi is redescribed. The reproductive potential studies in relation to ecological parameters showed that the 'r' values of these rotifers were significantly influenced by salinity as well as temperature, and was species specific. In the light of reproductive preferences, the reorganization of three distinct species has been confirmed by this study and this would allow further comparative work in these lines on this economically important species complex. Keywords: Brachionus plicatilis species complex, reproductive preferences Introduction Among brachionid rotifers, Brachionus plicatilis The occurrence of B. plicatilis in Indian waters was Miiller, 1786 (Monogononta) is probably one of the best- noted by a few numbers of workers (Rao and Mohan, studied taxa because of its suitability as an initial live feed 1984; Shakuntala and Singh, 1993; Gopakumar and for various finfish and shellfish larvae (Lubzens, 1987). -
Old Woman Creek National Estuarine Research Reserve Management Plan 2011-2016
Old Woman Creek National Estuarine Research Reserve Management Plan 2011-2016 April 1981 Revised, May 1982 2nd revision, April 1983 3rd revision, December 1999 4th revision, May 2011 Prepared for U.S. Department of Commerce Ohio Department of Natural Resources National Oceanic and Atmospheric Administration Division of Wildlife Office of Ocean and Coastal Resource Management 2045 Morse Road, Bldg. G Estuarine Reserves Division Columbus, Ohio 1305 East West Highway 43229-6693 Silver Spring, MD 20910 This management plan has been developed in accordance with NOAA regulations, including all provisions for public involvement. It is consistent with the congressional intent of Section 315 of the Coastal Zone Management Act of 1972, as amended, and the provisions of the Ohio Coastal Management Program. OWC NERR Management Plan, 2011 - 2016 Acknowledgements This management plan was prepared by the staff and Advisory Council of the Old Woman Creek National Estuarine Research Reserve (OWC NERR), in collaboration with the Ohio Department of Natural Resources-Division of Wildlife. Participants in the planning process included: Manager, Frank Lopez; Research Coordinator, Dr. David Klarer; Coastal Training Program Coordinator, Heather Elmer; Education Coordinator, Ann Keefe; Education Specialist Phoebe Van Zoest; and Office Assistant, Gloria Pasterak. Other Reserve staff including Dick Boyer and Marje Bernhardt contributed their expertise to numerous planning meetings. The Reserve is grateful for the input and recommendations provided by members of the Old Woman Creek NERR Advisory Council. The Reserve is appreciative of the review, guidance, and council of Division of Wildlife Executive Administrator Dave Scott and the mapping expertise of Keith Lott and the late Steve Barry. -
Keratella Rotifers Found in Brazil, and  Survey of Keratella Rotifers from the Neotropics
AMAZONIANA X 2 223 - 236 Kiel, Oktober 1981 Keratella rotifers found in Brazil, and â survey of Keratella rotifers from the Neotropics by Paul N. Turner Dr. Paul N. Turner, Dept. Invert. Zool., Nat. Mus. Nat. Hist. Washington, D. C. 20560, USA (accepted for publication: May 19871 Abstract Eight Brazilian lakes sampled by Francisco de Assis Esteves and Maria do Socorro R. Ibañez lrere exanined for ¡otifers. Of the 57 species found, four were members of the genus Keratella, A literature search revealed about 15 species and subspecies of Kerøtella recorded from the Neotropics, 1 1 of these frorn Brazil. All known Neotropical Keratella rotifers are discussed and figured, with highlights on the endemics. Related species are discussed when confnsion may arise with identifications. Taxonomic details of specific significance are listed in order of importance, and the state ofexpert consensus about this genus is given. Ecology and distribution of these rotifers are also discussed. Key words : Rotifers, Keratella, distribution, Neotropics, South America. Resumo Oito lagos brasileiros pesquisados por F. A. Esteves e M. S. R. Ibañez foram examinados a fim de determinar as espécies de Rotifera presentes nos mesmos. Entre as 57 espécies distintas que foram constatadas nos lagos, 4 foram membros do gênero Kerat:ella. Pesquisa na lite¡atura científica revelou registros de cerca de 15 espécies e subespócies de Keratella nas regiões neotropicais, sendo 10 espécies registradas no Brasil. Fornecem-se figuras de todas as espécies de Keratellø atualmente registradas nas regiões neo- tropicais, com ênfase ãs espécies endêmicas. Discutem.se casos de possível confusão entre espécies parecidas. -
A Revised Key to the Zooplankton of Lake Champlain
Plattsburgh State University of New York Volume 6 (2013) A Revised Key to the Zooplankton of Lake Champlain Mark LaMay, Erin Hayes-Pontius, Ian M. Ater, Timothy B. Mihuc (faculty) Lake Champlain Research Institute, SUNY Plattsburgh, Plattsburgh, NY 12901 ABSTRACT This key was developed by undergraduate research students working on a project with NYDEC and the Lake Champlain Monitoring program to develop long-term data sets for Lake Champlain plankton. Funding for development of this key was provided by, the Lake Champlain Basin Program and the New York Department of Environmental Conservation (NYDEC). The key contains couplet keys for the major taxa in Cladocera and Copepoda and Rotifer plankton in Lake Champlain. Illustrations are by Erin Hayes-Pontius and Ian Ater. Many thanks to the employees of the Lake Champlain Research Institute for hours of excellent work in the field and in the lab: especially Casey Bingelli, Heather Bradley, Amanda Groves and Carrianne Pershyn. Keywords: Lake Champlain; zooplankton; identification; key INTRODUCTION Lake Champlain is one of the largest freshwater bodies in the United States. The Lake Champlain drainage basin is bordered by the Adirondack Mountains of New York to the west and the Green Mountains of Vermont to the east. This unique ecosystem has a surface area of 1130 km2, a length of 200 km and a mean depth of 19.4 m. The lake shoreline extends from Quebec in the north, 200 km south to Whitehall, New York, where it connects to the Hudson-Champlain canal. Islands and man-made transport causeways divide the lake into several distinct parts: Main Lake, South Lake, and Northeast Arm including Missisquoi Bay, and Malletts Bay. -
Catalase in Brachionus Calyciflorus During the Aging Process
Changes in Expression of Manganese Superoxide Dismutase, Copper and Zinc Superoxide Dismutase and Catalase in Brachionus calyciflorus during the Aging Process Jianghua Yang, Siming Dong, Qichen Jiang, Tengjiao Kuang, Wenting Huang, Jiaxin Yang* Jiangsu Province Key Laboratory for Biodiversity & Biotechnology and Jiangsu Province Key Laboratory for Aquatic Live Food, School of Biological Sciences, Nanjing Normal University, Nanjing, Jiangsu, People’s Republic of China Abstract Rotifers are useful model organisms for aging research, owing to their small body size (0.1–1 mm), short lifespan (6–14 days) and the relative easy in which aging and senescence phenotypes can be measured. Recent studies have shown that antioxidants can extend the lifespan of rotifers. In this paper, we analyzed changes in the mRNA expression level of genes encoding the antioxidants manganese superoxide dismutase (MnSOD), copper and zinc SOD (CuZnSOD) and catalase (CAT) during rotifer aging to clarify the function of these enzymes in this process. We also investigated the effects of common life- prolonging methods [dietary restriction (DR) and resveratrol] on the mRNA expression level of these genes. The results showed that the mRNA expression level of MnSOD decreased with aging, whereas that of CuZnSOD increased. The mRNA expression of CAT did not change significantly. This suggests that the ability to eliminate reactive oxygen species (ROS) in the mitochondria reduces with aging, thus aggravating the damaging effect of ROS on the mitochondria. DR significantly increased the mRNA expression level of MnSOD, CuZnSOD and CAT, which might explain why DR is able to extend rotifer lifespan. Although resveratrol also increased the mRNA expression level of MnSOD, it had significant inhibitory effects on the mRNA expression of CuZnSOD and CAT. -
Brachionus Rotifers As a Model for Investigating Dietary and Metabolic Regulators of Aging
Nutrition and Healthy Aging 6 (2021) 1–15 1 DOI 10.3233/NHA-200104 IOS Press Review Brachionus rotifers as a model for investigating dietary and metabolic regulators of aging Kristin E. Gribble∗ Marine Biological Laboratory, Woods Hole, MA, USA Abstract. Because every species has unique attributes relevant to understanding specific aspects of aging, using a diversity of study systems and a comparative biology approach for aging research has the potential to lead to novel discoveries applicable to human health. Monogonont rotifers, a standard model for studies of aquatic ecology, evolutionary biology, and ecotoxicology, have also been used to study lifespan and healthspan for nearly a century. However, because much of this work has been published in the ecology and evolutionary biology literature, it may not be known to the biomedical research community. In this review, we provide an overview of Brachionus rotifers as a model to investigate nutritional and metabolic regulators of aging, with a focus on recent studies of dietary and metabolic pathway manipulation. Rotifers are microscopic, aquatic invertebrates with many advantages as a system for studying aging, including a two-week lifespan, easy laboratory culture, direct development without a larval stage, sexual and asexual reproduction, easy delivery of pharmaceuticals in liquid culture, and transparency allowing imaging of cellular morphology and processes. Rotifers have greater gene homology with humans than do established invertebrate models for aging, and thus rotifers may be used to investigate novel genetic mechanisms relevant to human lifespan and healthspan. The research on caloric restriction; dietary, pharmaceutical, and genetic interventions; and transcriptomics of aging using rotifers provide insights into the metabolic regulators of lifespan and health and suggest future directions for aging research. -
Volume 2, Chapter 4-7C: Invertebrates: Rotifer Taxa
Glime, J. M. 2017. Invertebrates: Rotifer Taxa – Monogononta. Chapt. 4-7c. In: Glime, J. M. Bryophyte Ecology. Volume 2. 4-7c-1 Bryological Interaction. Ebook sponsored by Michigan Technological University and the International Association of Bryologists. Last updated 18 July 2020 and available at <http://digitalcommons.mtu.edu/bryophyte-ecology2/>. CHAPTER 4-7c INVERTEBRATES: ROTIFER TAXA – MONOGONONTA TABLE OF CONTENTS Notommatidae ............................................................................................................................................ 4-7c-2 Cephalodella ....................................................................................................................................... 4-7c-2 Drilophaga ........................................................................................................................................ 4-7c-10 Enteroplea ......................................................................................................................................... 4-7c-11 Eosphora ........................................................................................................................................... 4-7c-11 Eothinia ............................................................................................................................................. 4-7c-12 Monommata ...................................................................................................................................... 4-7c-12 Notommata ....................................................................................................................................... -
Sexual Reproductive Biology of Brachionus Quadridentatus Hermanns (Rotifera: Monogononta)
desire 1 7/03/2006 8:32 PM Page 81 Hidrobiológica 2006, 16 (1): 81-87 Sexual reproductive biology of Brachionus quadridentatus Hermanns (Rotifera: Monogononta) Estudio de la biología sexual reproductiva del rotífero Brachionus quadridentatus Hermanns (Rotifera: Monogononta) Desiree Díaz1, Gustavo E. Santos-Medrano2, Marcelo Silva-Briano3, Araceli Adabache-Ortiz3 and Roberto Rico-Martínez2 1University of Illinois at Urbana-Champaign. Student of the Program of Biophysics. 607 South Mathews Avenue. Urbana, IL , 61801, USA. 2 y 3Universidad Autónoma de Aguascalientes. Centro Básico. Departamentos de Biología y Química. Avenida Universidad 940, Aguascalientes, Ags. C.P. 20100, México. Díaz D., G. E. Sánchez-Medrano, M. Silva-Briano, A. Adabache-Ortiz and R. Rico-Martínez, 2006. Sexual reproductive biology of Brachionus quadridentatus Hermanns Rotífera Monogononta. Hidrobiológica 16 (1): 81-87. ABSTRACT This study examined important aspects of the sexual reproductive biology of the monogonont rotifer Brachionus quadridentatus Hermanns. Observations on the following was made: 1) Morphological description of the male, 2) An analysis of mating behavior, 3) An analysis of female and male life-span at 25oC, and 4) Morphometric characterization of the three types of eggs known in this species and determination of hatching percentages of sexual eggs at 20 and 25oC. SEM photographs of the male are included, the female and parthenogenetic and sexual eggs. Some complementary photographs with the light microscope are also included. The mating behavior of B. quadridentatus is similar to those of other brachionids. Attempted copulations lasted on average 12.4 s, and completed copulations lasted on average 71.4 s. B. quadridentatus is the Brachionus species with the longest duration of copulation recorded so far. -
About the Book the Format Acknowledgments
About the Book For more than ten years I have been working on a book on bryophyte ecology and was joined by Heinjo During, who has been very helpful in critiquing multiple versions of the chapters. But as the book progressed, the field of bryophyte ecology progressed faster. No chapter ever seemed to stay finished, hence the decision to publish online. Furthermore, rather than being a textbook, it is evolving into an encyclopedia that would be at least three volumes. Having reached the age when I could retire whenever I wanted to, I no longer needed be so concerned with the publish or perish paradigm. In keeping with the sharing nature of bryologists, and the need to educate the non-bryologists about the nature and role of bryophytes in the ecosystem, it seemed my personal goals could best be accomplished by publishing online. This has several advantages for me. I can choose the format I want, I can include lots of color images, and I can post chapters or parts of chapters as I complete them and update later if I find it important. Throughout the book I have posed questions. I have even attempt to offer hypotheses for many of these. It is my hope that these questions and hypotheses will inspire students of all ages to attempt to answer these. Some are simple and could even be done by elementary school children. Others are suitable for undergraduate projects. And some will take lifelong work or a large team of researchers around the world. Have fun with them! The Format The decision to publish Bryophyte Ecology as an ebook occurred after I had a publisher, and I am sure I have not thought of all the complexities of publishing as I complete things, rather than in the order of the planned organization. -
The Rotifers of Spanish Reservoirs: Ecological, Systematical and Zoogeographical Remarks
91 THE ROTIFERS OF SPANISH RESERVOIRS: ECOLOGICAL, SYSTEMATICAL AND ZOOGEOGRAPHICAL REMARKS Jordi de Manuel Barrabin Departament d'Ecologia, Universitat de Barcelona. Avd. Diagonal 645,08028 Barcelona. Spain,[email protected] ABSTRACT This article covers the rotifer data from a 1987/1988 survey of one hundred Spanish reservoirs. From each species brief infor- mation is given, focused mainly on ecology, morphology, zoogeography and distribution both in Spain and within reservoirs. New autoecological information on each species is also established giving conductivity ranges, alkalinity, pH and temperature for each. Original drawings and photographs obtained on both optical and electronic microscopy are shown of the majority of the species found. In total one hundred and ten taxa were identified, belonging to 101 species, representing 20 families: Epiphanidae (1): Brachionidae (23); Euchlanidae (1); Mytilinidae (1 ): Trichotriidae (3): Colurellidae (8); Lecanidae (1 5); Proalidae (2); Lindiidae (1); Notommatidae (5); Trichocercidae (7); Gastropodidae (5); Synchaetidae (1 1); Asplanchnidae (3); Testudinellidae (3); Conochiliidae (5):Hexarthridae (2); Filiniidae (3); Collothecidae (2); Philodinidae (Bdelloidea) (I). Thirteen species were new records for the Iberian rotifer fauna: Kerutella ticinensis (Ehrenberg); Lepadella (X.) ustucico- la Hauer; Lecane (M.) copeis Harring & Myers; Lecane tenuiseta Harring: Lecane (M.) tethis Harring & Myers; Proales fal- laciosa Wulfert; Lindia annecta Harring & Myers; Notommatu cerberus Hudson & Gosse; Notommata copeus Ehrenberg: Resticula nyssu Harring & Myers; Trichocerca vernalis Hauer; Gustropus hyptopus Ehrenberg: Collothecu mutabilis Hudson. Key Words: Rotifera, plankton, heleoplankton, reservoirs RESUMEN Este urticulo proporciona infiirmacicin sobre 10s rotferos hullados en el estudio 1987/88 realizudo sobre cien embalses espafioles. Para cnda especie se da una breve informacicin, ,fundamentalmente sobre aspectos ecoldgicos, morfoldgicos, zoo- geogriificos, asi como de su distribucidn en EspaAa y en los emldses. -
Rotifer Species Diversity in Mexico: an Updated Checklist
diversity Review Rotifer Species Diversity in Mexico: An Updated Checklist S. S. S. Sarma 1,* , Marco Antonio Jiménez-Santos 2 and S. Nandini 1 1 Laboratory of Aquatic Zoology, FES Iztacala, National Autonomous University of Mexico, Av. de Los Barrios No. 1, Tlalnepantla 54090, Mexico; [email protected] 2 Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City 04510, Mexico; [email protected] * Correspondence: [email protected]; Tel.: +52-55-56231256 Abstract: A review of the Mexican rotifer species diversity is presented here. To date, 402 species of rotifers have been recorded from Mexico, besides a few infraspecific taxa such as subspecies and varieties. The rotifers from Mexico represent 27 families and 75 genera. Molecular analysis showed about 20 cryptic taxa from species complexes. The genera Lecane, Trichocerca, Brachionus, Lepadella, Cephalodella, Keratella, Ptygura, and Notommata accounted for more than 50% of all species recorded from the Mexican territory. The diversity of rotifers from the different states of Mexico was highly heterogeneous. Only five federal entities (the State of Mexico, Michoacán, Veracruz, Mexico City, Aguascalientes, and Quintana Roo) had more than 100 species. Extrapolation of rotifer species recorded from Mexico indicated the possible occurrence of more than 600 species in Mexican water bodies, hence more sampling effort is needed. In the current review, we also comment on the importance of seasonal sampling in enhancing the species richness and detecting exotic rotifer taxa in Mexico. Keywords: rotifera; distribution; checklist; taxonomy Citation: Sarma, S.S.S.; Jiménez-Santos, M.A.; Nandini, S. Rotifer Species Diversity in Mexico: 1.