Microhabitat Selection by Octomys Mimax (Rodentia: Octodontidae)
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Evolution of the Largest Mammalian Genome
GBE Evolution of the Largest Mammalian Genome Ben J. Evans1,*, Nathan S. Upham1,2,3,*, Goeffrey B. Golding1, Ricardo A. Ojeda4, and Agustina A. Ojeda4 1Biology Department, McMaster University, Hamilton, Ontario, Canada 2Field Museum of Natural History, Chicago, IL 3Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 4Grupo de Investigaciones de la Biodiversidad (GIB), Instituto Argentino de Investigaciones de Zonas Aridas (IADIZA), Mendoza, Argentina *Corresponding authors: E-mails: [email protected]; [email protected]. Accepted: June 21, 2017 Data deposition: Sequence data and assemblies from this study are deposited in the Sequence Read Archive of the National Center for Biotechnology Information (NCBI), study SRP102508, bioproject PRJNA380259, including RNA sequencing (RNAseq) reads and transcriptome assemblies for O. mimax, T. barrerae, X. tropicalis,andX. laevis, and whole genome sequencing (WGS) reads, for O. mimax and T. barrerae. Contigs >200 bp in length from the draft whole genome assemblies for O. mimax and T. barrerae have been deposited at DDBJ/ENA/GenBank in subproject ID SUB2517200 under the accession NDGM00000000 and NDGN00000000. The versions described in this paper are version NDGM01000000 and NDGN01000000. High abundance k-mer contig assemblies are provided in the Supplementary Material online. Abstract The genome of the red vizcacha rat (Rodentia, Octodontidae, Tympanoctomys barrerae) is the largest of all mammals, and about double the size of their close relative, the mountain vizcacha rat Octomys mimax, even though the lineages that gave rise to these species diverged from each other only about 5 Ma. The mechanism for this rapid genome expansion is contro- versial, and hypothesized to be a consequence of whole genome duplication or accumulation of repetitive elements. -
The Octodontidae Revisited
THE OCTODONTIDAE REVISITED UNA REVISION DE OCTODONTIDAE Milton Gallardo, R. Ojeda, C. González, and C. Ríos ABSTRACT The monophyletic and depauperate assemblage of South American octodontid rodents has experienced an extensive adaptive radiation from above-ground dwellers to subterranean, saxicolous, and gerbil-like deserticolous life forms. Complex and saltational chromosomal repatterning is a hallmark of octodontid evolution. Recent molecular evidence links these chromosome dynamics with quantum genome size shifts, and probably with reticulate evolution via introgressive hybridization in the desert dwellers Tympanoctomys barrerae and Pipanacoctomys aureus. Genome duplication represents a novel mechanism of evolution in mammals and its adaptive role is reflected in the ability of deserticolous species to colonize the extreme environment of salt flats. Unique to Tympanoctomys is a the rigid bundle of hairs behind the upper incisors which is crucial to efficiently peel saltbush leaves and probably explains its broader distribution relative to P. aureus. This feature, in association with other attributes (e. g., specialized kidneys, large bullae, feeding behavior) has enabled Tympanoctomys to cope with extreme environmental conditions. Key words: Octodontidae, Octodontids, South American mammals, tetraploidy, Tympanoctomys barrerae. RESUMEN Los octodóntidos son un grupo de roedores monofiléticos que han experimentado una extensa radiación adaptativa desde especies que viven en la superficie a formas de vida subterráneas o de tipo gerbos, especializados a la vida desertícola. La evolución de los octodóntidos está marcada por reordenamientos cromsómicos complejos y de tipo saltatorio. Las evidencias moleculares recientes indican una estrecha asociación entre esta dinámica cromosómica, los cambios genómicos cuánticos y la evolución Pp. xx-xx in Kelt, D. A., E. -
45763089029.Pdf
Mastozoología Neotropical ISSN: 0327-9383 ISSN: 1666-0536 [email protected] Sociedad Argentina para el Estudio de los Mamíferos Argentina Frugone, María José; Correa, Loreto A; Sobrero, Raúl ACTIVITY AND GROUP-LIVING IN THE PORTER’S ROCK RATS, Aconaemys porteri Mastozoología Neotropical, vol. 26, núm. 2, 2019, Julio-, pp. 487-492 Sociedad Argentina para el Estudio de los Mamíferos Tucumán, Argentina Disponible en: http://www.redalyc.org/articulo.oa?id=45763089029 Cómo citar el artículo Número completo Sistema de Información Científica Redalyc Más información del artículo Red de Revistas Científicas de América Latina y 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 Mastozoología Neotropical, 26(2):487-492 Mendoza, 2019 Copyright © SAREM, 2019 Versión on-line ISSN 1666-0536 hp://www.sarem.org.ar hps://doi.org/10.31687/saremMN.19.26.2.0.05 hp://www.sbmz.org Nota ACTIVITY AND GROUP-LIVING IN THE PORTER’S ROCK RATS, Aconaemys porteri María José Frugone1, Loreto A. Correa2,3 and Raúl Sobrero4 1Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Santiago, Chile. 2Escuela de Medicina Veterinaria, Facultad de Ciencias. Universidad Mayor, Santiago, Chile. 3Departamento de Ecología, Facultad de Ciencias, Ponticia Universidad Católica de Chile. 4Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL) / Consejo Nacional de Investigaciones Cientícas y Técnicas (CONICET), Esperanza, Argentina. [Correspondence: Raúl Sobrero <[email protected]>] ABSTRACT. We provide the rst systematic data on behavior and ecology of Aconaemys porteri. -
Hystrx It. J. Mamm. (Ns) Supp. (2007) V European Congress of Mammalogy
Hystrx It. J. Mamm . (n.s.) Supp. (2007) V European Congress of Mammalogy RODENTS AND LAGOMORPHS 51 Hystrx It. J. Mamm . (n.s.) Supp. (2007) V European Congress of Mammalogy 52 Hystrx It. J. Mamm . (n.s.) Supp. (2007) V European Congress of Mammalogy A COMPARATIVE GEOMETRIC MORPHOMETRIC ANALYSIS OF NON-GEOGRAPHIC VARIATION IN TWO SPECIES OF MURID RODENTS, AETHOMYS INEPTUS FROM SOUTH AFRICA AND ARVICANTHIS NILOTICUS FROM SUDAN EITIMAD H. ABDEL-RAHMAN 1, CHRISTIAN T. CHIMIMBA, PETER J. TAYLOR, GIANCARLO CONTRAFATTO, JENNIFER M. LAMB 1 Sudan Natural History Museum, Faculty of Science, University of Khartoum P. O. Box 321 Khartoum, Sudan Non-geographic morphometric variation particularly at the level of sexual dimorphism and age variation has been extensively documented in many organisms including rodents, and is useful for establishing whether to analyse sexes separately or together and for selecting adult specimens to consider for subsequent data recording and analysis. However, such studies have largely been based on linear measurement-based traditional morphometric analyses that mainly focus on the partitioning of overall size- rather than shape-related morphological variation. Nevertheless, recent advances in unit-free, landmark/outline-based geometric morphometric analyses offer a new tool to assess shape-related morphological variation. In the present study, we used geometric morphometric analysis to comparatively evaluate non-geographic variation in two geographically disparate murid rodent species, Aethmoys ineptus from South Africa and Arvicanthis niloticus from Sudan , the results of which are also compared with previously published results based on traditional morphometric data. Our results show that while the results of the traditional morphometric analyses of both species were congruent, they were not sensitive enough to detect some signals of non-geographic morphological variation. -
Tympanoctomys: 75 Años De Historia. Estado Actual Del Conoci- Miento Del Género
Rev. Mus. Argentino Cienc. Nat., n.s. 20(1): 109-122, 2018 ISSN 1514-5158 (impresa) ISSN 1853-0400 (en línea) Tympanoctomys: 75 años de historia. Estado actual del conoci- miento del género Agustina A. OJEDA, Andrea del Pilar TARQUINO-CARBONELL, Leandro M. VÉLEZ & Ricardo A. OJEDA Grupo de Investigaciones de la Biodiversidad, Instituto Argentino de Investigaciones de Zonas Áridas (IADIZA), CCT Mendoza. CONICET. Av. Ruiz Leal s/n Parque General San Martín, Mendoza, CP 5500 Argentina, e-mail: [email protected] Abstract: This contribution is a tribute to José Yepes on the 75th anniversary of his description of the ge- nus Tympanoctomys, and the 90th anniversary of his admission to the Argentine Museum of Natural Sciences “Bernardino Rivadavia”. Viscacha rats are the epitome of South American rodents adapted to desert habitats, and are a true model, not only to present different specialized attributes for life in xeric environments, but also as one of the mammals with the highest chromosomal number. In this chapter, we present an overview of the state of knowledge of the genus and related species, regarding aspects such as distribution, ecology, genetic and conserva- tion. Perspectives focus on gaps and unresolved issues that are fascinating and promising research lines. Key words: José Yepes, Octodontids, Rodents, Viscacha Rats Resumen: Esta contribución es un homenaje a José Yepes por los 75 años transcurridos desde que describiera el género Tympanoctomys, y por los 90 años de su ingreso al Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”. Las ratas vizcacha son el epítome de roedores sudamericanos adaptados al desierto, y han constituido un verdadero modelo, no solo por presentar distintos atributos especializados para la vida en ambientes xéricos, sino también como uno de los mamíferos con mayor número cromosómico. -
Holdridge Life Zone Map: Republic of Argentina María R
United States Department of Agriculture Holdridge Life Zone Map: Republic of Argentina María R. Derguy, Jorge L. Frangi, Andrea A. Drozd, Marcelo F. Arturi, and Sebastián Martinuzzi Forest International Institute General Technical November Service of Tropical Forestry Report IITF-GTR-51 2019 In accordance with Federal civil rights law and U.S. Department of Agriculture (USDA) civil rights regulations and policies, the USDA, its Agencies, offices, and employees, and institutions participating in or administering USDA programs are prohibited from discriminating based on race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, family/parental status, income derived from a public assistance program, political beliefs, or reprisal or retaliation for prior civil rights activity, in any program or activity conducted or funded by USDA (not all bases apply to all programs). Remedies and complaint filing deadlines vary by program or incident. Persons with disabilities who require alternative means of communication for program information (e.g., Braille, large print, audiotape, American Sign Language, etc.) should contact the responsible Agency or USDA’s TARGET Center at (202) 720-2600 (voice and TTY) or contact USDA through the Federal Relay Service at (800) 877-8339. Additionally, program information may be made available in languages other than English. To file a program discrimination complaint, complete the USDA Program Discrimination Complaint Form, AD-3027, found online at http://www.ascr.usda.gov/complaint_filing_cust.html and at any USDA office or write a letter addressed to USDA and provide in the letter all of the information requested in the form. -
Discovery of Tetraploidy in a Mammal the Red Viscacha Rat Is Unaffected by Having Double the Usual Number of Chromosomes
brief communications Discovery of tetraploidy in a mammal The red viscacha rat is unaffected by having double the usual number of chromosomes. olyploidy, or having more than a pair of each type of chromosome, is con- abcedfg Psidered to be unlikely in mammals 1 9 because it would disrupt the mechanism of dosage compensation that normally inacti- vates one X chromosome in females1. Also, 10 18 any imbalance in chromosome number should affect the normal developmental 19 27 processes and therefore constitute an evolu- tionary end, as in triploid humans2. Nevertheless, genetic evidence indicates 28 36 that the red viscacha rat, Tympanoctomys 3 barrerae (Octodontidae) , is tetraploid. T. 37 SC 45 barrerae, which is a highly specialized desert rodent4, has the largest chromosome com- plement in mammals5 with a single XY sex- 46 50 10µm XY 10 µm chromosome system (Fig. 1). Although little is known about meiotic chromosome Figure 1 C-banded karyotype of a male Tympanoctomys barrerae Figure 2 Bright-field photomicrograph of sperm cells from differ- pairing in T. barrerae, the constant diploid from Mendoza, Argentina (4N4102; fundamental number of ent genera in the families Octodontidae and Abrocomidae. a, Tym- number found in 13 specimens examined at autosomal arms is 200). The karyotype includes 36 pairs of meta- panoctomys barrerae; b, Aconaemys fuscus; c, Octodon degus; three localities in Argentina indicates that centric to submetacentric chromosomes and 14 pairs of subtelo- d, Spalacopus cyanus; e, Octomys mimax; f, Octodontomys segregation occurs normally. centric autosomes. The X chromosome is the largest element, gliroides; g, Abrocoma bennetti. In mammals without excessive consti- present in two copies in females. -
Morphology of the Limbs in the Semi-Fossorial Desert Rodent Species of Tympanoctomys (Octodontidae, Rodentia)
A peer-reviewed open-access journal ZooKeys 710:Morphology 77–96 (2017) of the limbs in the semi-fossorial desert rodent species of Tympanoctomys... 77 doi: 10.3897/zookeys.710.14033 RESEARCH ARTICLE http://zookeys.pensoft.net Launched to accelerate biodiversity research Morphology of the limbs in the semi-fossorial desert rodent species of Tympanoctomys (Octodontidae, Rodentia) M. Julieta Pérez1, Rubén M. Barquez2, M. Mónica Díaz1,2 1 PIDBA (Programa de Investigaciones de Biodiversidad Argentina), PCMA (Programa de Conservación de los Murciélagos de Argentina), CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Facultad de Ciencias Naturales e IML-Universidad Nacional de Tucumán. Miguel Lillo 251, 4000. Tucumán, Argentina 2 Fundación Miguel Lillo. Miguel Lillo 205, 4000. Tucumán, Argentina Corresponding author: M. Julieta Pérez ([email protected]) Academic editor: R. López-Antoñanzas | Received 7 June 2017 | Accepted 26 September 2017 | Published 19 October 2017 http://zoobank.org/4E701E29-1D3E-4092-B150-94BD7C52957B Citation: Pérez MJ, Barquez RM, Díaz MM (2017) Morphology of the limbs in the semi-fossorial desert rodent species of Tympanoctomys (Octodontidae, Rodentia). ZooKeys 710: 77–96. https://doi.org/10.3897/zookeys.710.14033 Abstract Here, a detailed description of the forelimbs and hindlimbs of all living species of the genus Tympa- noctomys are presented. These rodents, highly adapted to desert environments, are semi-fossorial with capacity to move on the surface as well as to build burrows. The shape, structure, and size of the limbs are described. Contrary to what was expected for scratch digging semi-fossorial species, Tympanoctomys have slender humerus, radius and ulna; with narrow epicondyles of the humerus and short olecranon of the ulna with poorly developed processes. -
List of Taxa for Which MIL Has Images
LIST OF 27 ORDERS, 163 FAMILIES, 887 GENERA, AND 2064 SPECIES IN MAMMAL IMAGES LIBRARY 31 JULY 2021 AFROSORICIDA (9 genera, 12 species) CHRYSOCHLORIDAE - golden moles 1. Amblysomus hottentotus - Hottentot Golden Mole 2. Chrysospalax villosus - Rough-haired Golden Mole 3. Eremitalpa granti - Grant’s Golden Mole TENRECIDAE - tenrecs 1. Echinops telfairi - Lesser Hedgehog Tenrec 2. Hemicentetes semispinosus - Lowland Streaked Tenrec 3. Microgale cf. longicaudata - Lesser Long-tailed Shrew Tenrec 4. Microgale cowani - Cowan’s Shrew Tenrec 5. Microgale mergulus - Web-footed Tenrec 6. Nesogale cf. talazaci - Talazac’s Shrew Tenrec 7. Nesogale dobsoni - Dobson’s Shrew Tenrec 8. Setifer setosus - Greater Hedgehog Tenrec 9. Tenrec ecaudatus - Tailless Tenrec ARTIODACTYLA (127 genera, 308 species) ANTILOCAPRIDAE - pronghorns Antilocapra americana - Pronghorn BALAENIDAE - bowheads and right whales 1. Balaena mysticetus – Bowhead Whale 2. Eubalaena australis - Southern Right Whale 3. Eubalaena glacialis – North Atlantic Right Whale 4. Eubalaena japonica - North Pacific Right Whale BALAENOPTERIDAE -rorqual whales 1. Balaenoptera acutorostrata – Common Minke Whale 2. Balaenoptera borealis - Sei Whale 3. Balaenoptera brydei – Bryde’s Whale 4. Balaenoptera musculus - Blue Whale 5. Balaenoptera physalus - Fin Whale 6. Balaenoptera ricei - Rice’s Whale 7. Eschrichtius robustus - Gray Whale 8. Megaptera novaeangliae - Humpback Whale BOVIDAE (54 genera) - cattle, sheep, goats, and antelopes 1. Addax nasomaculatus - Addax 2. Aepyceros melampus - Common Impala 3. Aepyceros petersi - Black-faced Impala 4. Alcelaphus caama - Red Hartebeest 5. Alcelaphus cokii - Kongoni (Coke’s Hartebeest) 6. Alcelaphus lelwel - Lelwel Hartebeest 7. Alcelaphus swaynei - Swayne’s Hartebeest 8. Ammelaphus australis - Southern Lesser Kudu 9. Ammelaphus imberbis - Northern Lesser Kudu 10. Ammodorcas clarkei - Dibatag 11. Ammotragus lervia - Aoudad (Barbary Sheep) 12. -
Argentina Wine Annual Report Wine Annual Argentina
THIS REPORT CONTAINS ASSESSMENTS OF COMMODITY AND TRADE ISSUES MADE BY USDA STAFF AND NOT NECESSARILY STATEMENTS OF OFFICIAL U.S. GOVERNMENT POLICY Required Report - public distribution Date: 3/17/2014 GAIN Report Number: Argentina Wine Annual Argentina Wine Annual Report Approved By: Melinda D. Sallyards Prepared By: Andrea Yankelevich Report Highlights: The calendar year (CY) 2014 grape crop is estimated to be 2.09 million metric tons (MMT), down 27 percent from CY2013. CY2014 will be one of the worst in the last 15 years as a result of the exceptional bad weather during the crop season in the main production provinces of Mendoza and San Juan. However, quality is reported to be very good. Given the decrease in grape production, wine production in CY2014 is projected to decrease to 920 million liters compared to1.26 billion liters produced in CY2013. It is expected that 2014 wine exports will remain stable at 2013 levels, and will increase10 percent in 2015. However, continued high inflation put upward pressure on prices. While price increase were somewhat mitigated by the recent 25 percent peso devaluation in January 2014 lower quality wines have lost export sales. While 2014 exports and domestic consumption are forecast to remain at 2013 levels, must production might decline to make up for the production shortfall. (All data in calendar years unless otherwise specified). Executive Summary: Post forecasts an increase in grape production for CY 2015 to rebound to 2013 levels to a total of 2.87 million MMT. Production for CY 2014 is expected to decrease to 2.09 MMT, down 27 percent compared to CY2013. -
Genome Diversity and Species Richness in Mammals
bioRxiv preprint doi: https://doi.org/10.1101/709311; this version posted July 20, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Genome diversity and species richness in mammals John Herrick 2** and Bianca Sclavi 1* Author affiliations: 1. LCQB, UMR 7238 CNRS, Sorbonne Université, Paris, France 2. Department of Physics, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia VSA 1S6, Canada * Corresponding author ** Corresponding author at 3, rue des Jeûneurs, 75002 Paris, France. E-mail addresses: [email protected] (J. Herrick), bianca.sclavi@sorbonne- universite.fr (B. Sclavi). Running head: Mammal genome diversity and species richness Keywords: C-value, species richness, genome stability, Mammalia, karyotype diversity Abstract Evolutionary changes in karyotype have long been implicated in speciation events; however, the phylogenetic relationship between karyotype diversity and species richness in closely and distantly related mammalian lineages remains to be fully elucidated. Here we examine the association between genome diversity and species diversity across the class Mammalia. We tested five different metrics of genome diversity: clade-average genome size, standard deviation of genome size, diploid and fundamental numbers (karyotype diversity), sub-chromosomal rearrangements and percent synteny block conservation. We found a significant association between species richness (phylogenetic clade diversity) and genome diversity at both order and family level clades. Karyotype diversity provided the strongest support for a relationship between genome diversity and species diversity. Our results suggest that lineage specific variations in genome and karyotype stability can account for different levels of species diversity in mammals. -
Mammal Species of the World Literature Cited
Mammal Species of the World A Taxonomic and Geographic Reference Third Edition The citation for this work is: Don E. Wilson & DeeAnn M. Reeder (editors). 2005. Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed), Johns Hopkins University Press, 2,142 pp. (Available from Johns Hopkins University Press, 1-800-537-5487 or (410) 516-6900 http://www.press.jhu.edu). Literature Cited Abad, P. L. 1987. Biologia y ecologia del liron careto (Eliomys quercinus) en Leon. Ecologia, 1:153- 159. Abe, H. 1967. Classification and biology of Japanese Insectivora (Mammalia). I. Studies on variation and classification. Journal of the Faculty of Agriculture, Hokkaido University, Sapporo, Japan, 55:191-265, 2 pls. Abe, H. 1971. Small mammals of central Nepal. Journal of the Faculty of Agriculture, Hokkaido University, Sapporo, Japan, 56:367-423. Abe, H. 1973a. Growth and development in two forms of Clethrionomys. II. Tooth characters, with special reference to phylogenetic relationships. Journal of the Faculty of Agriculture, Hokkaido University, Sapporo, Japan, 57:229-254. Abe, H. 1973b. Growth and development in two forms of Clethrionomys. III. Cranial characters, with special reference to phylogenetic relationships. Journal of the Faculty of Agriculture, Hokkaido University, Sapporo, Japan, 57:255-274. Abe, H. 1977. Variation and taxonomy of some small mammals from central Nepal. Journal of the Mammalogical Society of Japan, 7(2):63-73. Abe, H. 1982. Age and seasonal variations of molar patterns in a red-backed vole population. Journal of the Mammalogical Society of Japan, 9:9-13. Abe, H. 1983. Variation and taxonomy of Niviventer fulvescens and notes on Niviventer group of rats in Thailand.