DOCSLIB.ORG

Proposal for Support of Research on the Systematics and Evolution of the Fishes Endemic to the Mesa Central of Mexico

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Proposal for Support of Research on the Systematics and Evolution of the Fishes Endemic to the Mesa Central of Mexico PROPOSAL FOR SUPPORT OF RESEARCH ON THE SYSTEMATICS AND EVOLUTION OF THE FISHES ENDEMIC TO THE MESA CENTRAL OF MEXICO To: National Science Foundation From; Clyde D. Barbour Systematic Biology University of Utah Washington 25, D. C. 1. Institution.- Department of Zoology and Entomology University of Utah Salt Lake City, Utah 84112 (Telephone: 322-7586) 2. Principal Investigator.- Clyde D. Barbour, Assistant Professor of Zoology and Curator of Fishes 3. Title of Project Proposed.- The Systematics and Evolution of the Fishes Endemic to the Mesa Central of Mexico 4. Desired Starting Date.- September 1, 1967 5. Period of Time for Which Support is Requested.- Two years, beginning September 1, 1967 and terminating August 31, 1969. 6. Description of Research Proposed.- Introduction The Central Plateau is the largest physiographic region of Mexico. According to West (1964) it "extends from the present United States-Mexico border southward to the latitude of Mexico City." This area is enclosed by mountain systems on the east, west and south. Elevations are the low- est at the international border (less than 1000 m.) and slowly increase as one progresses southward. At its southern extremity the plateau sur- face may rise to more than 2000 m. The Mesa Central of Mexico is defined as the southern one-third of the Central Plateau. This tropical highland extends south from about the latitude of San Luis Potosi and Aguas Calientes to the Transverse Volcanic Axis that marks the southern limit of the plateau (West, a.. cit.). This region is drained principally by the westward flowing Lerma-Santiago river system although other rivers have cut back into the edges of the plateau, _ e.,_ the Panuco, Balsas, Armeria, and the Ameca. The uplifted and isolated nature of the Mesa Central has resulted in the development of .a highly endemic fish fauna. The family Goodeidae (Cyprinodontoidei, about 30 species) and the following genera are largely restricted to the present or former Lerma-Santiago drainage and those rivers that have cut back into this portion of the plateau: Chirostoma (Atherinidae, 22 species), Poblana (Atherinidae, 3 species), Algansea (Cyprinidae, about 5 species), Xystrosus and Falcularius (Cyprinidae, both monotypic), Evarra (Cyprinidae, 2 species) and Aztecula (Cyprinidae, 4 species). A major exception to this uniform pattern of distribution is the small enclave of Lerma-Santiago fishes (one goodeid and one ather- inid) found in and around the headwaters of the Mezquital River in the State of Durango. Studies on the fishes of this region were initiated by myself in 1962. Since that time I have personally made 95 collections on the Mesa Central and have accumulated a considerable body of taxonomic information concerning the genus Chirostoma (Barbour, 1966). My own observations and a survey of the pertinent literature have revealed that there are still challenging taxonomic and evolutionary problems to be solved in the other unique groups. Field work by Dr. Robert R. Miller and his students at the University of Michigan and by myself while I was at Tulane University has resulted in the accumulation of series of specimens for many of the species where formerly there had existed, at worst, only the type or type series. These facts make a taxonomic study of this fauna not only desirable but also feasible. Besides Chirostoma, the genera Poblana, Evarra, and Aztecula are being omitted from this proposal. Poblana is presently under study by my student, Mr. Robert Bolland, as a master's problem. Evarra and Aztecula are closely allied to the large and complex genus Notropis. While an attempt will be made to make comprehensive collections of these cyprinids, formal study is deferred to a later date. It is the conviction of most plant and animal systematists and eco- logists that the rapid exploitation and depletion of the natural environ- ment lend a new urgency to their studies. Although there are scientists who would debate this point, it is my belief that studies concerning physics, chemistry, et cetera can be put off to a future date without great loss. Atoms and molecules will always be around to study. The half-life of our natural environment, particularly our terrestrial and fresh-water habitats, is critically short. In an age of steel and concrete it is a truism to say what is here today can very easily be totally and irreplaceably gone tomorrow. Nowhere is this statement more clearly demon- strated than on the dry Mesa Central. The diversion of parts of the Lerma River for cities and agriculture has reduced the living space of aquatic animals and pollution resulting from raw sewage and increasing industri- alization renders more and more the remaining waters unfit for life. The recent introduction of the largemouth bass, Micropterus salmoides, into certain isolated lakes and Lake Chapala itself will certainly take its toll of the native fauna. Indeed, one isolated population (out of three) of an undescribed subspecies of Chirostoma humboldtianum was already near extinction in 1963 because of this predator. As the area to be studied has undergone much volcanic activity in the recent past, many of the goodeids are highly restricted in their geographical distribution and may be considered to be endangered species. If the opportunity to study these fishes is not seized quickly, it may well be lost forever. Abstract The goal of the research described herein is to analyse systemati- cally the fishes peculiar to the Mesa Central. The research aims at the following specific objectives: 1) The family Goodeidae A. To ascertain the limits of specific variationiand so define the valid species. B. To reevaluate generic relationships. C. To determine, if possible, the position of the family within the suborder Cyprinodontoidei. -2- 2) The genus Algansea A. To ascertain the limits of specific variation and so define the valid species. B. To determine the relationship of this genus to other North American Cyprinidae. 3) The genera Falcularius and Xystrosus To determine the relationships of these monotypic genera to the other cyprinids of the Mesa Central. 4) To make a coherent and reasonable statement concerning the evo- lution of fishes on the Mesa Central of Mexico. Scope of the Problem Proposed The geographic scope of this project is limited by the distribution of the fishes under study. The fact that these distribution patterns have their center on the Mesa Central serves only to emphasize the highly en- demic nature of the fauna and does not reflect any arbitrary divisions on my part. The Lerma drainage and that part of the Santiago River above the waterfall near the city of Guadalajara have been designated a natural fish province of Middle America by Meek (1904), Regan (1907) and Stuart (1964). The philosophical approach to this problem is primarily taxonomic. Although much of my present thinking on the relationships of the fishes under consideration is based on morphological differences and similarities, I am aware that biological relationships are more than such morphological phenomena. It is for this reason that information on ecology and behavior is always sought in the field to augment other findings. I am also of the opinion that taxonomic schemes should reflect, whenever possible, evolutionary relationships. This emphasis on phylogeny inevitably leads to a general discussion of the problem of speciation and adaptive radiation as exemplified by the groups under study. In this regard, the proposed study transcends "straight" taxonomy. Wherever poss- ible, present distribution patterns will be correlated with past geologic events (Clements, 1963; Alvarez, 1966). My theory that character displace- ment is partially responsible for the diverse morphology found in the various species, particularly in the genus Chirostoma, will be investigated as will the idea that considerable evolutionary parallelism on the generic as well as on the specific level is also present. It is obvious that the research program described in this proposal cannot be completed in two years. At the end of this period the completed work will be evaluated and a new proposal submitted to the National Science Foundation or another granting agency. At the final conclusion of this study, it is hoped that a coherent statement regarding the taxonomy, distri- bution and evolution of the fishes of the Mesa Central can be made. Methods Fishes will be obtained chiefly by means of 10 ft. nylon common-sense seines. In the larger rivers and lakes, gill and trammel nets will be used to supplement the smaller seines. These large nets will be set from a canoe. -3- Size of specimens preserved is limited by the size of field con- tainers. For this reason, 3 and 5 gallon glass buckets are carried into the field as well as the standard 1/2 gallon jars. Ten percent formalin is used as the preservative. Detailed notes as well as photographs of color patterns will be made from live or freshly killed specimens in the field. If it is at all possible, a few specimens will be retained for observation in the laboratory. Basic data on habits and habitat which are routinely obtained are as follows: 1) general description and photograph of the habitat; 2) identification of the dominant plants in the habitat; 3) determination of width, flow, turbidity, temperature and bottom conditions of the aquatic habitat. The depth of capture and weather are also noted. Specific laboratory procedure to be followed is given below under the appropriate headings. Previous Work by_ the Principal Investigator The following progress has already been made toward the stated ob- jectives: 1) As a result of my dissertation work, I am familiar not only with the literature concerning the geology and the ichthyofauna of the Mesa Central, but have already spent a total of three months in the field. I have personally collected most of the species that I plan to study.
Load more

Recommended publications
  • The Evolution of the Placenta Drives a Shift in Sexual Selection in Livebearing Fish
    LETTER doi:10.1038/nature13451 The evolution of the placenta drives a shift in sexual selection in livebearing fish B. J. A. Pollux1,2, R. W. Meredith1,3, M. S. Springer1, T. Garland1 & D. N. Reznick1 The evolution of the placenta from a non-placental ancestor causes a species produce large, ‘costly’ (that is, fully provisioned) eggs5,6, gaining shift of maternal investment from pre- to post-fertilization, creating most reproductive benefits by carefully selecting suitable mates based a venue for parent–offspring conflicts during pregnancy1–4. Theory on phenotype or behaviour2. These females, however, run the risk of mat- predicts that the rise of these conflicts should drive a shift from a ing with genetically inferior (for example, closely related or dishonestly reliance on pre-copulatory female mate choice to polyandry in conjunc- signalling) males, because genetically incompatible males are generally tion with post-zygotic mechanisms of sexual selection2. This hypoth- not discernable at the phenotypic level10. Placental females may reduce esis has not yet been empirically tested. Here we apply comparative these risks by producing tiny, inexpensive eggs and creating large mixed- methods to test a key prediction of this hypothesis, which is that the paternity litters by mating with multiple males. They may then rely on evolution of placentation is associated with reduced pre-copulatory the expression of the paternal genomes to induce differential patterns of female mate choice. We exploit a unique quality of the livebearing fish post-zygotic maternal investment among the embryos and, in extreme family Poeciliidae: placentas have repeatedly evolved or been lost, cases, divert resources from genetically defective (incompatible) to viable creating diversity among closely related lineages in the presence or embryos1–4,6,11.
    [Show full text]
  • Endangered Species
    FEATURE: ENDANGERED SPECIES Conservation Status of Imperiled North American Freshwater and Diadromous Fishes ABSTRACT: This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes of North America prepared by the American Fisheries Society’s Endangered Species Committee. Since the last revision in 1989, imperilment of inland fishes has increased substantially. This list includes 700 extant taxa representing 133 genera and 36 families, a 92% increase over the 364 listed in 1989. The increase reflects the addition of distinct populations, previously non-imperiled fishes, and recently described or discovered taxa. Approximately 39% of described fish species of the continent are imperiled. There are 230 vulnerable, 190 threatened, and 280 endangered extant taxa, and 61 taxa presumed extinct or extirpated from nature. Of those that were imperiled in 1989, most (89%) are the same or worse in conservation status; only 6% have improved in status, and 5% were delisted for various reasons. Habitat degradation and nonindigenous species are the main threats to at-risk fishes, many of which are restricted to small ranges. Documenting the diversity and status of rare fishes is a critical step in identifying and implementing appropriate actions necessary for their protection and management. Howard L. Jelks, Frank McCormick, Stephen J. Walsh, Joseph S. Nelson, Noel M. Burkhead, Steven P. Platania, Salvador Contreras-Balderas, Brady A. Porter, Edmundo Díaz-Pardo, Claude B. Renaud, Dean A. Hendrickson, Juan Jacobo Schmitter-Soto, John Lyons, Eric B. Taylor, and Nicholas E. Mandrak, Melvin L. Warren, Jr. Jelks, Walsh, and Burkhead are research McCormick is a biologist with the biologists with the U.S.
    [Show full text]
  • Molecular Systematics of Western North American Cyprinids (Cypriniformes: Cyprinidae)
    Zootaxa 3586: 281–303 (2012) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA Copyright © 2012 · Magnolia Press Article ISSN 1175-5334 (online edition) urn:lsid:zoobank.org:pub:0EFA9728-D4BB-467E-A0E0-0DA89E7E30AD Molecular systematics of western North American cyprinids (Cypriniformes: Cyprinidae) SUSANA SCHÖNHUTH 1, DENNIS K. SHIOZAWA 2, THOMAS E. DOWLING 3 & RICHARD L. MAYDEN 1 1 Department of Biology, Saint Louis University, 3507 Laclede Avenue, St. Louis, MO 63103, USA. E-mail S.S: [email protected] ; E-mail RLM: [email protected] 2 Department of Biology and Curator of Fishes, Monte L. Bean Life Science Museum, Brigham Young University, Provo, UT 84602, USA. E-mail: [email protected] 3 School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA. E-mail: [email protected] Abstract The phylogenetic or evolutionary relationships of species of Cypriniformes, as well as their classification, is in a era of flux. For the first time ever, the Order, and constituent Families are being examined for relationships within a phylogenetic context. Relevant findings as to sister-group relationships are largely being inferred from analyses of both mitochondrial and nuclear DNA sequences. Like the vast majority of Cypriniformes, due to an overall lack of any phylogenetic investigation of these fishes since Hennig’s transformation of the discipline, changes in hypotheses of relationships and a natural classification of the species should not be of surprise to anyone. Basically, for most taxa no properly supported phylogenetic hypothesis has ever been done; and this includes relationships with reasonable taxon and character sampling of even families and subfamilies.
    [Show full text]
  • Extinction Rates in North American Freshwater Fishes, 1900–2010 Author(S): Noel M
    Extinction Rates in North American Freshwater Fishes, 1900–2010 Author(s): Noel M. Burkhead Source: BioScience, 62(9):798-808. 2012. Published By: American Institute of Biological Sciences URL: http://www.bioone.org/doi/full/10.1525/bio.2012.62.9.5 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. Articles Extinction Rates in North American Freshwater Fishes, 1900–2010 NOEL M. BURKHEAD Widespread evidence shows that the modern rates of extinction in many plants and animals exceed background rates in the fossil record. In the present article, I investigate this issue with regard to North American freshwater fishes. From 1898 to 2006, 57 taxa became extinct, and three distinct populations were extirpated from the continent. Since 1989, the numbers of extinct North American fishes have increased by 25%. From the end of the nineteenth century to the present, modern extinctions varied by decade but significantly increased after 1950 (post-1950s mean = 7.5 extinct taxa per decade).
    [Show full text]
  • PHYLOGENY and ZOOGEOGRAPHY of the SUPERFAMILY COBITOIDEA (CYPRINOIDEI, Title CYPRINIFORMES)
    PHYLOGENY AND ZOOGEOGRAPHY OF THE SUPERFAMILY COBITOIDEA (CYPRINOIDEI, Title CYPRINIFORMES) Author(s) SAWADA, Yukio Citation MEMOIRS OF THE FACULTY OF FISHERIES HOKKAIDO UNIVERSITY, 28(2), 65-223 Issue Date 1982-03 Doc URL http://hdl.handle.net/2115/21871 Type bulletin (article) File Information 28(2)_P65-223.pdf Instructions for use Hokkaido University Collection of Scholarly and Academic Papers : HUSCAP PHYLOGENY AND ZOOGEOGRAPHY OF THE SUPERFAMILY COBITOIDEA (CYPRINOIDEI, CYPRINIFORMES) By Yukio SAWADA Laboratory of Marine Zoology, Faculty of Fisheries, Bokkaido University Contents page I. Introduction .......................................................... 65 II. Materials and Methods ............... • • . • . • . • • . • . 67 m. Acknowledgements...................................................... 70 IV. Methodology ....................................•....•.........•••.... 71 1. Systematic methodology . • • . • • . • • • . 71 1) The determinlttion of polarity in the morphocline . • . 72 2) The elimination of convergence and parallelism from phylogeny ........ 76 2. Zoogeographical methodology . 76 V. Comparative Osteology and Discussion 1. Cranium.............................................................. 78 2. Mandibular arch ...................................................... 101 3. Hyoid arch .......................................................... 108 4. Branchial apparatus ...................................•..••......••.. 113 5. Suspensorium.......................................................... 120 6. Pectoral
    [Show full text]
  • Multi-Locus Fossil-Calibrated Phylogeny of Atheriniformes (Teleostei, Ovalentaria)
    Molecular Phylogenetics and Evolution 86 (2015) 8–23 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Multi-locus fossil-calibrated phylogeny of Atheriniformes (Teleostei, Ovalentaria) Daniela Campanella a, Lily C. Hughes a, Peter J. Unmack b, Devin D. Bloom c, Kyle R. Piller d, ⇑ Guillermo Ortí a, a Department of Biological Sciences, The George Washington University, Washington, DC, USA b Institute for Applied Ecology, University of Canberra, Australia c Department of Biology, Willamette University, Salem, OR, USA d Department of Biological Sciences, Southeastern Louisiana University, Hammond, LA, USA article info abstract Article history: Phylogenetic relationships among families within the order Atheriniformes have been difficult to resolve Received 29 December 2014 on the basis of morphological evidence. Molecular studies so far have been fragmentary and based on a Revised 21 February 2015 small number taxa and loci. In this study, we provide a new phylogenetic hypothesis based on sequence Accepted 2 March 2015 data collected for eight molecular markers for a representative sample of 103 atheriniform species, cover- Available online 10 March 2015 ing 2/3 of the genera in this order. The phylogeny is calibrated with six carefully chosen fossil taxa to pro- vide an explicit timeframe for the diversification of this group. Our results support the subdivision of Keywords: Atheriniformes into two suborders (Atherinopsoidei and Atherinoidei), the nesting of Notocheirinae Silverside fishes within Atherinopsidae, and the monophyly of tribe Menidiini, among others. We propose taxonomic Marine to freshwater transitions Marine dispersal changes for Atherinopsoidei, but a few weakly supported nodes in our phylogeny suggests that further Molecular markers study is necessary to support a revised taxonomy of Atherinoidei.
    [Show full text]
  • Description of Girardinichthys Ireneae Sp.N. from Zacapu, Michoacan, Mexico with Remarks on the Genera Girardinichthys BLEEKER
    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Annalen des Naturhistorischen Museums in Wien Jahr/Year: 2003 Band/Volume: 104B Autor(en)/Author(s): Radda Alfred C., Meyer M.K. Artikel/Article: Description of Girardinichthys ireneae sp.n.. 5-9 ©Naturhistorisches Museum Wien, download unter www.biologiezentrum.at Ann. Naturhist. Mus. Wien 104 B 5-9 Wien, März 2003 Description of Girardinichthys ireneae sp.n. from Zacapu, Michoacan, Mexico with remarks on the genera Girardinichthys BLEEKER, 1860 and Hubbsina DE BUEN, 1941 (Goodeidae, Pisces) Alfred C. Radda* & Manfred K. Meyer** Summary After some remarks on systematics and taxonomy of the genera Girardinichthys BLEEKER, 1860 and Hubbsina DE BUEN, 1941 a new species Girardinichthys (Hubbsina) ireneae from Zacapu, Michoacan, Mexico, is described. Zusammenfassung Nach einigen Anmerkungen zur Systematik und Taxonomie der Gattungen Girardinichthys BLEEKER, 1860 und Hubbsina DE BUEN, 1941 wird eine neue Art, Girardinichthys (Hubbsina) ireneae von Zacapu, Michoacan, Mexiko beschrieben. Resumen Despues de algunas observaciones acerca de la sistematica y taxonomia del genero Girardinichthys BLEEKER, 1860 y Hubbsina DE BUEN, 1941 se puede describir una nueva especie, Girardinichthys (Hubbsina) ireneae de Zacapu, Michoacan, Mexico. Remarks on Girardinichthys BLEEKER, 1860 and Hubbsina DE BUEN, 1941 Until today two species of the genus Girardinichthys and one species of Hubbsina have been described: Girardinichthys
    [Show full text]
  • Reproductive Aspects of Yellow Fish Girardinichthys Multiradiatus (Meek, 1904) (Pisces: Goodeidae) in the Huapango Reservoir, State of Mexico, Mexico
    American Journal of Life Sciences 2013; 1(5): 189-194 Published online September 10, 2013 (http://www.sciencepublishinggroup.com/j/ajls) doi: 10.11648/j.ajls.20130105.11 Reproductive aspects of yellow fish Girardinichthys multiradiatus (Meek, 1904) (Pisces: Goodeidae) in the Huapango Reservoir, State of Mexico, Mexico Cruz-Gómez Adolfo *, Rodríguez-Varela Asela del Carmen, Vázquez-López Horacio Laboratorio de Ecología de Peces, Facultad de Estudios Superiores Iztacala, UNAM, Av. De Los Barrios, No. 1, Los Reyes Iztacala, Tlalnepantla, Estado de México, México, C. P. 54090 Email address: [email protected](A. Cruz-Gómez), [email protected]. mx(A. del C. Rodríguez-Varela), [email protected](H. Vázquez-López) To cite this article: Cruz-Gómez Adolfo, Rodríguez-Varela Asela del Carmen, Vázquez-López Horacio. Reproductive Aspects of Yellow Fish Girardinichthys Multiradiatus (Meek, 1904) (Pisces: Goodeidae) in the Huapango Reservoir, State of Mexico, Mexico. American Journal of Life Sciences, Vol. 1, No. 5, 2013, pp. 189-194. doi: 10.11648/j.ajls.20130105.11 Abstract: The sexual maturity, age at first maturation and fecundity in females of the yellow fish Girardinichthys multiradiatus were analyzed in the Huapango reservoir located in the State of Mexico, Mexico. From July 2007 to May 2008 bimonthly samplings were carried out and, using a bait well net, 407 individuals were collected (245 females and 162 males). Overall, the sex ratio between females/males was 1.51:1 ( P <0.05). The age of first maturation in the females was 33 mm of standard length. The spawning period occurred in July and accounted for the highest values in the gonadosomatic index.
    [Show full text]
  • 2016-01 Catalog of Fishes. Online Version: (2016): 72 Records
    2016-01 Catalog of Fishes. Online Version: (2016): 72 records http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp. Genera and Species of Goodeidae W. N. Eschmeyer, R. Fricke, R. van der Laan (eds) albivallis, Crenichthys baileyi Williams [J. E.] & Wilde [G. R.] 1981:489, Fig. 7 [Southwestern Naturalist v. 25 (no. 4); ref. 8991] Preston Big Spring, White Pine County, Nevada, U.S.A. Holotype: UMMZ 203332. Paratypes: UMMZ 203333 (1, allotype); UNLV F-952 (28). •Synonym of Crenichthys baileyi (Gilbert 1893), but a valid subspecies albivallis Williams & Wilde 1981 as described -- (Fuller et al. 1999:322 [ref. 25838], Lazara 2001:71 [ref. 25711], Scoppettone & Rissler 2002:82 [ref. 25956], Scharpf 2007:27 [ref. 30398], Minckley & Marsh 2009:243 [ref. 31114], Page & Burr 2011:452 [ref. 31215]). Current status: Synonym of Crenichthys baileyi (Gilbert 1893). Goodeidae: Empetrichthyinae. Distribution: Springs in White Pine County, Nevada, U.S.A. [subspecies Albivallis]. Habitat: freshwater. atripinnis, Goodea Jordan [D. S.] 1880:299 [Proceedings of the United States National Museum v. 2 (no. 94); ref. 2382] Leon, Guanajuato, Mexico. Lectotype: USNM 23137. Paralectotypes: USNM 23137 (many). Lectotype established (as figured specimen) in caption to Pl. 114, p. 3257 in Jordan & Evermann 1900 [ref. 2446] if figured specimen is identifiable. •Valid as Goodea atripinnis Jordan 1880 -- (Espinosa Pérez et al. 1993:41 [ref. 22290], Nelson et al. 2004:107 [ref. 27807], Miller 2006:281 [ref. 28615], Scharpf 2007:28 [ref. 30398], Miranda et al. 2010:185 [ref. 31345], Page et al. 2013:104 [ref. 32708]). Current status: Valid as Goodea atripinnis Jordan 1880. Goodeidae: Goodeinae.
    [Show full text]
  • Cyprinodontiformes) En La Mesa Central De México
    Estado de conservación de los peces de la familia Goodeidae (Cyprinodontiformes) en la mesa central de México Marina Y. De la Vega-Salazar Departamento de Ecología Evolutiva, Instituto de Ecología UNAM. Dirección actual: Universidad de Guadalajara, Centro Universitario Los Lagos. Enrique Díaz de León s/n, Colonia Paseos de la Montaña Lagos de Moreno, Jalisco, México; [email protected] Recibido 10-VI-2005. Corregido 11-VIII-2005. Aceptado 15-X-2005. Abstract: Conservation status of Goodeidae familiy fishes (Cyprinodontiformes) from the Mexican Central Plateau. To establish the conservation status and threats for Goodeidae fishes in the high plateau of Mexico, I assessed limnological descriptions, and the reduction in range and in number of localities where they are found, in 53 localities (58.8% of historically reported localities). This assessment included the comparison of current collections with historical records. A principal component analysis of limnological variables showed that most remnant Goodeid species inhabit localities characterised by low environmental degradation: few appear to have a high tolerance to environmental degradation. Overall, 65% of species suffered a reduction in number of localities where they are found. Almost all species face some conservation threat, considering the criteria and categories established by the International Union for the Conservation of Nature (IUCN). Data suggest that one species is extinct (Allotoca catarinae), one more is extinct in the wild (Skiffia francesae), eight are critically endangered (Allodontichthys hubbsi, Allotoca goslinei, Allotoca regalis, Allotoca zacapuensi, Ameca splendens, Characodon audax, Hubbsina turneri, and Zoogoneticus tequila), eleven are endangered, eight can be regarded as vulnerable, four are “near threatened” and only two appear to under “least concern”.
    [Show full text]
  • Evolutionary History and Whole Genome Sequence of Pejerrey (Odontesthes Bonariensis): New Insights Into Sex Determination in Fishes
    Evolutionary History and Whole Genome Sequence of Pejerrey (Odontesthes bonariensis): New Insights into Sex Determination in Fishes by Daniela Campanella B.Sc. in Biology, July 2009, Universidad Nacional de La Plata, Argentina A Dissertation submitted to The Faculty of The Columbian College of Arts and Sciences of The George Washington University in partial fulfillment of the requirements for the degree of Doctor of Philosophy January 31, 2015 Dissertation co-directed by Guillermo Ortí Louis Weintraub Professor of Biology Elisabet Caler Program Director at National Heart, Lung and Blood Institute, NIH The Columbian College of Arts and Sciences of The George Washington University certifies that Daniela Campanella has passed the Final Examination for the degree of Doctor of Philosophy as of December 12th, 2014. This is the final and approved form of the dissertation. Evolutionary History and Whole Genome Sequence of Pejerrey (Odontesthes bonariensis): New Insights into Sex Determination in Fishes Daniela Campanella Dissertation Research Committee: Guillermo Ortí, Louis Weintraub Professor of Biology, Dissertation Co-Director Elisabet Caler, Program Director at National Heart, Lung and Blood Institute, NIH, Dissertation Co-Director Hernán Lorenzi, Assistant Professor in Bioinformatics Department, J. Craig Venter Institute Rockville Maryland, Committee Member Jeremy Goecks, Assistant Professor of Computational Biology, Committee Member ! ""! ! Copyright 2015 by Daniela Campanella All rights reserved ! """! Dedication The author wishes to dedicate this dissertation to: My love, Ford, for his unconditional support and inspiration. For teaching me that admiration towards each other’s work is the fundamental fuel to go anywhere. My family and friends, for being there, meaning “there” everywhere and whenever. My grandpa Hugo, a pejerrey lover who knew how to fish, cook and enjoy the “silver arrows”.
    [Show full text]
  • A New Species of Algansea (Actinopterygii: Cyprinidae) from the Ameca River Basin, in Central Mexico
    Revista Mexicana de Biodiversidad 80: 483- 490, 2009 A new species of Algansea (Actinopterygii: Cyprinidae) from the Ameca River basin, in Central Mexico Una especie nueva de Algansea (Actinopterygii: Cyprinidae) en la cuenca del río Ameca en el centro de México Rodolfo Pérez-Rodríguez1*, Gerardo Pérez-Ponce de León2, Omar Domínguez-Domínguez3 and Ignacio Doadrio4 1Posgrado en Ciencias Biológicas, Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado postal 70-153, 04510, México D.F., México. 2Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado postal 70-153, 04510, México D.F., México. 3Laboratorio de Biología Acuática, Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México. 4Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, José Gutiérrez Abascal, 2, 28006 Madrid, España. *Correspondencia: [email protected] Abstract. A morphological comparative analysis was performed among different populations of the cyprinid Algansea tincella Valenciennes, 1844 from the Lerma-Chapala and Ameca River basins in central Mexico. A new species, Algansea amecae n. sp. is described from individuals collected from small tributary in the headwaters of the Ameca basin. The new species differs from Lerma-Chapala populations of A. tincella by having a lower number of transversal scales, a lower number of infraorbital pores, a prominent dark lateral stripe along the body, a black caudal spot extending onto the medial caudal inter-radial membranes, and a pigmented (“dotted”) lateral line. This new species increases the high level of endemism in the freshwater ichthyofauna of the Ameca basin. It appears to be most closely related to populations in the Lerma-Chapala-Santiago system, as is the case for several other species in the Ameca basin.
    [Show full text]