DOCSLIB.ORG

Poecilia Sphenops Valenciennes, 1846 (Cyprinodontiformes

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Poecilia Sphenops Valenciennes, 1846 (Cyprinodontiformes Check List 9(5): 1129–1131, 2013 © 2013 Check List and Authors Chec List ISSN 1809-127X (available at www.checklist.org.br) Journal of species lists and distribution N Poecilia sphenops Valenciennes, 1846 (Cyprinodontiformes, ISTRIBUTIO Brazil D Poeciliidae): New record in rio Sergipe basin, northeastern 1* 1 RAPHIC , Marlene Silva de Almeida Pereira and Carlos Augusto G Figueiredo2 EO Marcelo Fulgêncio Guedes de Brito G N O 1 Universidade Federal de Sergipe, Programa de Pós-Graduação em Ecologia e Conservação. Av. Marechal Rondon s/n, Rosa Elze. CEP OTES 49100-000. São Cristóvão, Sergipe, SE, Brazil. N * 2 CorrUniversidadeesponding Federal author. do Email: Estado [email protected] do Rio de Janeiro, Instituto de Biociências, Núcleo de Gestão Ambiental, Av. Pasteur, nº 458, Sala 512-F. CEP 22290-240. Rio de Janeiro, RJ, Brazil. Abstract: Poecilia sphenops Valenciennes, 1846 in The present paper reports the first record of non-native species northeastern Brazil in rio Sergipe basin, a coastal drainage of the Sergipe state.P. sphenops This species was collected at seven sites in the Caatinga biome. The cause of the introduction is not known, but we believe it is a direct impact of the aquarium trade absencethrough theof parental aquarium care dumping such as performed Astyanax lacustrisby hobbyists. and Serrapinnus The presence heterodon of in natural waterbodies increases nativeconcerns poeciliid for interference Poecilia vivipara with native. ecosystems, and the risk of eggs predation in native species with low fecundity and , competition and hybridization with the Poeciliidae is the most important family of Cyprinodontiformes, represented from eastern United trade (Axelrod et al. States to South America and Africa including Madagascar commonappearance, species some speciesbeing the are guppyimportant (Poecilia in the aquariumreticulata (Nelson 2006). Three subfamilies are recognized: 2007), where, in Brazil, thePoecilia most Aplocheilichthyinae (22 species), Procatopodinae (61 sphenops Xiphophorus helleri species), and Poeciliinae (273 species) (Eschemeyer and Peters, 1859); X.the maculatus black molly (melanic variety of Fong 2013). Members of the subfamily Poeciliinae have );X. the variatus swordtail ( Hekel, 1848); theP. velifera platyfish [ (Günther,P. latipinna 1866)]; the variable (Alvesplatyfish et al[ (Meek, 1904)], and the sail-fin mollies (Parentia modified 1981) anal-fin (see withFigure a copulatory1, inset). Embryosorgan called develop the [ (Regan, 1914), and (Lesueur, 1821)] internallygonopodium, in this which subfamily, makes varyinginternal fromfertilization matrotrophic possible to . 2007; Magalhães and Jacobi 2008). In additionP. reticulatato the aquarium trade, it is not uncommonet al. 2008). for some species to be used as biological controls of mosquitoes such as lecitotrophic types (Kunz 2004). Owing to their attractive (Sherley 2000; Chandra Figure 1. Poecilia sphenops Adult male of non-native (31.8 mm SL) and tip of the modified anal-fin (gonopodium). Scale bar = 1 mm. 1129 Brito et al. | New record of Poecilia sphenops in northeastern Brazil The molly Poecilia sphenops occurs from Mexico to Colombia (Lucinda 2003). Presents greater plasticity and guppy Poecilia reticulata survival at different gradients of temperature (Báron et al. Oreochromisother non-native niloticus species were recorded at the same sites: et al. 2011). This The collection includedPeters, 204 females1859; and(13.70 Nile – tilapia47.70 P. sphenops in (Linnaeus, 1758). 2002; Hernández and Bückle 2002; Evans paperPoecilia reports sphenops the first record of non-native mm SL), 78 males (13.70 – 44.12 mm SL) and 66 juveniles siteswater in bodies the rio at Sergipenortheastern basin, Brazil. Sergipe state, northeastern developmental(8.00 – 13.52 mm stages SL). (sensu The analysis of some ovaries (n= (Figure 1) was collected at seven 50) revealed reproductive females and embryos in distinct a small coastal drainage of Sergipe state, limited to the of P. sphenops in rio Sergipe basin.Haynes 1995). These records Brazil (Figure 2) under SISBIO permit # 20104-1. This is andThe the presence ofof juvenilesP. sphenops suggest natural recruitment north by São Francisco and Japaratuba basins, and south in Brazil was recorded by Vaza-Barris basin (Rocha 2006). The region of sampled in Rio de Janeiro state at rivers in the urban region of tosites hydrological is typical of stress the Caatinga, (Prado 2003). a unique Voucher Brazilian specimens biome, Japarepaguá at Rio de Janeiro cityet (Bizerrilal. and Silveira- usedwhere in the this climate study isare semiarid deposited and under the rivers their are respective subject Primo 2001), and Minas Gerais state at Paraíba do Sul, and São Francisco basins (Alves 2007; Chaves and Magalhães 2010). These introductions were associated catalogue numbers CIUFS 581, CIUFS 589, CIUFS 647 and with the aquarium trade as people gave up the hobby and CIUFS 681, in the Universidade Federal de Sergipe fish released themet intoal. public waters through the aquarium collection (CIUFS). Poeciliadumping sphenops(Bizerril andprobably Primo reached2001; Padilla the riversand Williams of rio duringTrawl 20 minutes),(5 mm mesh) catching and 348 sieve specimens (4 mm of mesh) P. sphenops were. 2004; Alves 2007; Chaves and Magalhães 2010). deployed in shallow waters during the day (four persons in 10% formalin and later stored in 70% ethanol (Uieda Sergipe basin the same way. Alternatively, owing to its Fishes were euthanized (Borsky and Hodson 2003), fixed reputation as a voracious fish, it was released to control the lambari Astyanax lacustris for mosquito larvae. The highly larvivorous etcapacity al. 2008), of Serrapinnusand Castro heterodon1999). It was syntopic to native, barrigudinho species fish belonging to Poeciliidae family led to the introduction Poecilia vivipara Bloch and Schneider,(Lütken, 1801 1875), and the piaba cará in several countries (Sherley 2000; Chandra Geophagus brasiliensis (Eigenmann, 1915) whereinThe possiblefishes find establishment suitable conditions of P. sphenopsthey can becomeshould invasive (Puth and Post 2005). (Quoy and Gaimard, 1824). Two A. lacustrisbe verified and to S.evaluate heterodon its ,effects and especially on native P.species vivipara with, a specieslow fecundity of same and genus absence and similar of parental life history care suchattributes. as invasiveIt is generally species, acknowledged especially cultivated that closely ones, related selected species for theircompete resilience, for similar are more resources prone (Hutchinsonto be invasive, 1959), and mayand outcompete native species using the same niches (Alves et al. 2007). The hybridization between invasive and nativeP. vivipara species is a threat to conservation.P. mexicana Genetic introgression cannot Courtenaybe dismissed and because Meffe (1989),hybrids andbetween the same native may be true and non-native P. sphenops andwere the alreadynative P. recordedvivipara. by This case deserves attention since there are records ofwith establishment the invasive of Poecilia et al. 2011). The probable establishment of P. sphenopswith in rioconsequences Sergipe basin to native is of fauna (Sherley 2000; Evans become established, andconcern, these because areas whereare mangroves this poeciliid of rio Sergipe estuary. they tend to disperse naturallyet al .and (2008), colonize this speciesnew areas, are theAccording presence to ofPetrescu-Mag P. reticulata speciescapable in of Sergipe’s surviving drainages in coastal also brackish needs to bewaters. investigated. Finally, , another non-native poeciliid Acknowledgments: We thank all the members of the Laboratório Figure 2. Poecilia sphenops in rio Sergipe de Ictiologia (UFS) who helped us with the field work. Fapitec basin, Sergipe state, northeastern Brazil. (#019.203.00909/2009-8) and CNPq (#483103/2010-1) for financial Map of records of non-native support. Special thanks to Hans Kelstrup for revision of the English version, and for the suggestions of an anonymous reviewer. 1130 Brito et al. | New record of Poecilia sphenops in northeastern Brazil Literature Cited The American Naturalist Hutchinson, G.E. 1959.Developmental Homage to Santabiology Rosalia of Teleost or why fishesare there. Dordrecht: so many Alves, C.B.M., F. Vieira, A.L.B. MagalhãesIn T.M. Bert and (ed.). M.F.G. Ecological Brito. 2007. and Impacts Genetic Springer.kinds of animals? 636 p. 93(870):145-159 Implicationsof non-native of fish Aquaculture species in Activities Minas Gerais, Brazil: present situation Kunz, Y.W. 2004. In and prospects; p. 291-314 Check List of the Freshwater Fishes Dr. Axelrod´s Atlas of Freshwater Aquarium. New Fishes York: .Springer. Neptune City: T.F.H. Lucinda,of South P.H.F. and 2003.Family Central America Poeciliidae;. Porto Alegre: p: 555-581 Edipucrs. R.E. Reis, S.O. Axelrod, G.S., W.E. Burgess, H.R. Axelrod, N. Pronek and J.G. Walls.2007. Kullander and C.J. Ferraris-Jr.(ed.). Neotropical sexualPublications differentiation Inc. 1160 p.in Poecilia sphenops Valenciennes (Pisces: Magalhães,Biology andA.L.B. Conservation and Jacobi, C.M. 2008. Ornamental exotic fish Báron,Poeciliidae). S.B., R.F. Bückle Aquaculture and S. Research Espina. 2002. Environmental factors and introduced intoFishes Atlantic of the worldforest water bodies, Brazil. Peixes de águas interiores 3: 73-77. do estado do Rio de Janeiro 33: 615-619. Nelson, J.S. 2006. New York: John Wiley & Sons. 601 p. Bizerril, C.R.S.F. and P.B. Silveira-Primo. 2001. Padilla,ecosystems. D. K. and Frontier S. L. Williams.
Load more

Recommended publications
  • FAMILY Poeciliidae Bonaparte 1831
    FAMILY Poeciliidae Bonaparte 1831 - viviparous toothcarps, livebearers SUBFAMILY Poeciliinae Bonaparte 1831 - viviparous toothcarps [=Unipupillati, Paecilini, Belonesocini, Cyprinodontidae limnophagae, Gambusiinae, Tomeurinae, Poeciliopsinae, Heterandriini, Guirardinini, Cnesterodontini, Pamphoriini, Xiphophorini, Alfarini, Quintanini, Xenodexiinae, Dicerophallini, Scolichthyinae, Priapellini, Brachyrhaphini, Priapichthyini] GENUS Alfaro Meek, 1912 - livebearers [=Furcipenis, Petalosoma, Petalurichthys] Species Alfaro cultratus (Regan, 1908) - Regan's alfaro [=acutiventralis, amazonum] Species Alfaro huberi (Fowler, 1923) - Fowler's alfaro GENUS Belonesox Kner, 1860 - pike topminnows Species Belonesox belizanus Kner, 1860 - pike topminnow [=maxillosus] GENUS Brachyrhaphis Regan, 1913 - viviparous toothcarps [=Plectrophallus, Trigonophallus] Species Brachyrhaphis cascajalensis (Meek & Hildebrand, 1913) - Río Cascajal toothcarp Species Brachyrhaphis episcopi (Steindachner, 1878) - Obispo toothcarp [=latipunctata] Species Brachyrhaphis hartwegi Rosen & Bailey, 1963 - Soconusco gambusia Species Brachyrhaphis hessfeldi Meyer & Etzel, 2001 - Palenque toothcarp Species Brachyrhaphis holdridgei Bussing, 1967 - Tronadora toothcarp Species Brachyrhaphis olomina (Meek, 1914) - Orotina toothcarp Species Brachyrhaphis parismina (Meek, 1912) - Parismina toothcarp Species Brachyrhaphis punctifer (Hubbs, 1926) - Quibari Creek toothcarp Species Brachyrhaphis rhabdophora (Regan, 1908) - Río Grande de Terraba toothcarp [=tristani] Species Brachyrhaphis roseni
    [Show full text]
  • Alien Freshwater Fish, Xiphophorus Interspecies Hybrid (Poeciliidae) Found in Artificial Lake in Warsaw, Central Poland
    Available online at www.worldscientificnews.com WSN 132 (2019) 291-299 EISSN 2392-2192 SHORT COMMUNICATION Alien freshwater fish, Xiphophorus interspecies hybrid (Poeciliidae) found in artificial lake in Warsaw, Central Poland Rafał Maciaszek1,*, Dorota Marcinek2, Maria Eberhardt3, Sylwia Wilk4 1 Department of Genetics and Animal Breeding, Faculty of Animal Sciences, Warsaw University of Life Sciences, ul. Ciszewskiego 8, 02-786 Warsaw, Poland 2 Faculty of Animal Sciences, Warsaw University of Life Sciences, ul. Ciszewskiego 8, 02-786 Warsaw, Poland 3 Faculty of Veterinary Medicine, Warsaw University of Life Sciences, ul. Ciszewskiego 8, 02-786 Warsaw, Poland 4 Veterinary Clinic “Lavia-Vet”, Jasionka 926, 36-002, Jasionka, Poland *E-mail address: [email protected] ABSTRACT This paper describes an introduction of aquarium ornamental fish, Xiphophorus interspecies hybrid (Poeciliidae) in an artificial water reservoir in Pole Mokotowskie park complex in Warsaw, Poland. Caught individuals have been identified, described and presented in photographs. Measurements of selected physicochemical parameters of water were made and perspectives for the studied population were evaluated. The finding is discussed with available literature describing introductions of alien species with aquaristical origin in Polish waters. Keywords: aquarium, invasive species, ornamental pet, green swordtail, southern platyfish, variatus platy, stone maroko, Pole Mokotowskie park complex, Xiphophorus ( Received 14 July 2019; Accepted 27 July 2019; Date of Publication 29 July 2019 ) World Scientific News 132 (2019) 291-299 1. INTRODUCTION The fish kept in aquariums and home ponds are often introduced to new environment accidentaly or intentionaly by irresponsible owners. Some species of these ornamental animals are characterized by high expansiveness and tolerance to water pollution, which in the case of their release in a new area may result in local ichthyofauna biodiversity decline.
    [Show full text]
  • Summary Report of Freshwater Nonindigenous Aquatic Species in U.S
    Summary Report of Freshwater Nonindigenous Aquatic Species in U.S. Fish and Wildlife Service Region 4—An Update April 2013 Prepared by: Pam L. Fuller, Amy J. Benson, and Matthew J. Cannister U.S. Geological Survey Southeast Ecological Science Center Gainesville, Florida Prepared for: U.S. Fish and Wildlife Service Southeast Region Atlanta, Georgia Cover Photos: Silver Carp, Hypophthalmichthys molitrix – Auburn University Giant Applesnail, Pomacea maculata – David Knott Straightedge Crayfish, Procambarus hayi – U.S. Forest Service i Table of Contents Table of Contents ...................................................................................................................................... ii List of Figures ............................................................................................................................................ v List of Tables ............................................................................................................................................ vi INTRODUCTION ............................................................................................................................................. 1 Overview of Region 4 Introductions Since 2000 ....................................................................................... 1 Format of Species Accounts ...................................................................................................................... 2 Explanation of Maps ................................................................................................................................
    [Show full text]
  • A Checklist of the Fishes of the Monterey Bay Area Including Elkhorn Slough, the San Lorenzo, Pajaro and Salinas Rivers
    f3/oC-4'( Contributions from the Moss Landing Marine Laboratories No. 26 Technical Publication 72-2 CASUC-MLML-TP-72-02 A CHECKLIST OF THE FISHES OF THE MONTEREY BAY AREA INCLUDING ELKHORN SLOUGH, THE SAN LORENZO, PAJARO AND SALINAS RIVERS by Gary E. Kukowski Sea Grant Research Assistant June 1972 LIBRARY Moss L8ndillg ,\:Jrine Laboratories r. O. Box 223 Moss Landing, Calif. 95039 This study was supported by National Sea Grant Program National Oceanic and Atmospheric Administration United States Department of Commerce - Grant No. 2-35137 to Moss Landing Marine Laboratories of the California State University at Fresno, Hayward, Sacramento, San Francisco, and San Jose Dr. Robert E. Arnal, Coordinator , ·./ "':., - 'I." ~:. 1"-"'00 ~~ ~~ IAbm>~toriesi Technical Publication 72-2: A GI-lliGKL.TST OF THE FISHES OF TtlE MONTEREY my Jl.REA INCLUDING mmORH SLOUGH, THE SAN LCRENZO, PAY-ARO AND SALINAS RIVERS .. 1&let~: Page 14 - A1estria§.·~iligtro1ophua - Stone cockscomb - r-m Page 17 - J:,iparis'W10pus." Ribbon' snailt'ish - HE , ,~ ~Ei 31 - AlectrlQ~iu.e,ctro1OphUfi- 87-B9 . .', . ': ". .' Page 31 - Ceb1diehtlrrs rlolaCewi - 89 , Page 35 - Liparis t!01:f-.e - 89 .Qhange: Page 11 - FmWulns parvipin¢.rl, add: Probable misidentification Page 20 - .BathopWuBt.lemin&, change to: .Mhgghilu§. llemipg+ Page 54 - Ji\mdJ11ui~~ add: Probable. misidentifioation Page 60 - Item. number 67, authOr should be .Hubbs, Clark TABLE OF CONTENTS INTRODUCTION 1 AREA OF COVERAGE 1 METHODS OF LITERATURE SEARCH 2 EXPLANATION OF CHECKLIST 2 ACKNOWLEDGEMENTS 4 TABLE 1
    [Show full text]
  • Poecilia Picta, a Close Relative to the Guppy, Exhibits Red Male Coloration Polymorphism: a System for Phylogenetic Comparisons
    Zurich Open Repository and Archive University of Zurich Main Library Strickhofstrasse 39 CH-8057 Zurich www.zora.uzh.ch Year: 2015 Poecilia picta, a close relative to the guppy, exhibits red male coloration polymorphism: a system for phylogenetic comparisons Lindholm, Anna K ; Sandkam, Ben ; Pohl, Kristina ; Breden, Felix Abstract: Studies on the evolution of female preference and male color polymorphism frequently focus on single species since traits and preferences are thought to co-evolve. The guppy, Poecilia reticulata, has long been a premier model for such studies because female preferences and orange coloration are well known to covary, especially in upstream/downstream pairs of populations. However, focused single species studies lack the explanatory power of the comparative method, which requires detailed knowledge of multiple species with known evolutionary relationships. Here we describe a red color polymorphism in Poecilia picta, a close relative to guppies. We show that this polymorphism is restricted to males and is maintained in natural populations of mainland South America. Using tests of female preference we show female P. picta are not more attracted to red males, despite preferences for red/orange in closely related species, such as P. reticulata and P. parae. Male color patterns in these closely related species are different from P. picta in that they occur in discrete patches and are frequently Y chromosome-linked. P. reticulata have an almost infinite number of male patterns, while P. parae males occur in discrete morphs. We show the red male polymorphism in P. picta extends continuously throughout the body and is not a Y-linked trait despite the theoretical prediction that sexually-selected characters should often be linked to the heterogametic sex chromosome.
    [Show full text]
  • Kyfishid[1].Pdf
    Kentucky Fishes Kentucky Department of Fish and Wildlife Resources Kentucky Fish & Wildlife’s Mission To conserve, protect and enhance Kentucky’s fish and wildlife resources and provide outstanding opportunities for hunting, fishing, trapping, boating, shooting sports, wildlife viewing, and related activities. Federal Aid Project funded by your purchase of fishing equipment and motor boat fuels Kentucky Department of Fish & Wildlife Resources #1 Sportsman’s Lane, Frankfort, KY 40601 1-800-858-1549 • fw.ky.gov Kentucky Fish & Wildlife’s Mission Kentucky Fishes by Matthew R. Thomas Fisheries Program Coordinator 2011 (Third edition, 2021) Kentucky Department of Fish & Wildlife Resources Division of Fisheries Cover paintings by Rick Hill • Publication design by Adrienne Yancy Preface entucky is home to a total of 245 native fish species with an additional 24 that have been introduced either intentionally (i.e., for sport) or accidentally. Within Kthe United States, Kentucky’s native freshwater fish diversity is exceeded only by Alabama and Tennessee. This high diversity of native fishes corresponds to an abun- dance of water bodies and wide variety of aquatic habitats across the state – from swift upland streams to large sluggish rivers, oxbow lakes, and wetlands. Approximately 25 species are most frequently caught by anglers either for sport or food. Many of these species occur in streams and rivers statewide, while several are routinely stocked in public and private water bodies across the state, especially ponds and reservoirs. The largest proportion of Kentucky’s fish fauna (80%) includes darters, minnows, suckers, madtoms, smaller sunfishes, and other groups (e.g., lam- preys) that are rarely seen by most people.
    [Show full text]
  • Courtship and Mating of Nomorhamphus Liemi Vogt, 1978 (Zenarchopteridae)
    Bulletin of Fish Biology Volume 9 Nos. 1/2 15.12.2007 27-38 Courtship and mating of Nomorhamphus liemi Vogt, 1978 (Zenarchopteridae) Balz und Kopulation von Nomorhamphus liemi Vogt, 1978 (Zenarchopteridae) Thomas Magyar & Hartmut Greven Institut für Zoomorphologie und Zellbiologie der Heinrich-Heine-Universität Düsseldorf, Universitäts- str. 1, D-40225 Düsseldorf, Germany; [email protected] Summary: Courtship and mating of the males of the viviparous halfbeak Nomorhamphus liemi includes various elements such as watching the female, approach, swimming towards the female, nipping, checking, copulatory events, emerging, retreat and escape) and of females such as resting, cooperative behaviour (if any), evasion, retreat, threatening, biting. Males courted virgins (presumably receptive) and gravid (presumably unreceptive) females. Starting copulations or copulation attempts, the male swims alongside the female, rapidly bends his body and flicks his genital region towards the female urogenital aperture. Distinction between cooperative copulations, sneak copulations and copulation attempts is nearly impossible due to the rapidity of the process. However, some indirect evidence is given by the receptivity state of the female (non-receptive, but also otherwise reluctant females may attack males) and her cooperative behaviour. Presumably receptive females did not escape and occasionally appeared to tilt their genital opening towards the male’s genital. We were not able to visualize the immediate physical contact of mates with the technique
    [Show full text]
  • Gambusia Affinis)
    Pacific Northwest Aquatic Invasive Species Profile: Western mosquitofish (Gambusia affinis) Laura Johnson FISH 423 December 3, 2008 Figure 1. Western mosquitofish G. affinis (photo source: www.usgs.gov). Diagnostic information eleven short spines on ray 3 (Page and Burr 1991). Order: Cyprinodontiformes Until 1988, both the western mosquitofish (G. Family: Poeciliidae affinis) and eastern mosquitofish (G. holbrooki) Genus: Gambusia were classified as subspecies of G. affinis. The Species: affinis classification of each fish as a separate species is important since they are native to different Common names: Western mosquitofish, portions of the eastern United States (Wooten et mosquitofish al. 1988). G. affinis can be distinguished from G. holbrooki by having six dorsal rays instead of The western mosquitofish, Gambusia seven, and a lack of prominent teeth on affinis, is a small (maximum 6.5 cm) gray or gonopodial ray three (Page and Burr 1991). brown fish with a rounded tail and upturned mouth (Figures 1 and 2). It may have a large Life-history and basic ecology dusky to black teardrop marking beneath its eye (as in Figure 1), but this marking is sometimes Life cycle reduced (as in Figure 2). G. affinis has a dark G. affinis are ovoviviparous, meaning stripe along its back to the dorsal fin, yellow and that the young develop within eggs inside the blue iridescence on transparent silver-gray body mother’s body and are then born live and do not sides, and six dorsal rays. G. affinis can be receive additional nourishment from the mother further distinguished from other members of its (Wydoski and Whitney 2003).
    [Show full text]
  • Big Bend Gambusia Recovery Plan
    BIG BEND GAMBUSIA RECOVERY PLAN FISH &WILDLIFE SERVICE 1984 Albuquerque, New Mexico NM NMI =I IMO NM MIN IMEN MN NMI =I MN MIMI NMI INN I= INN NMI MN RECOVERY PLAN FOR BIG BEND GAMBUSIA Gambusia gaigei Hubbs, 1929 PREPARED FOR THE U.S. FISH AND WILDLIFE SERVICE BY THE RIO GRANDE FISHES RECOVERY TEAM - APPROVED: F'724,e,r • Regio ct or, Rekon 2 DATE: 1 WIN MIN 111111 SR INS MIN AM 11118 INN NM AN Me all NMI MIN 111.1 1111111 am as SUMMARY 1. Point or condition when species will be considered for deListing: The Big Bend gambusia may never be downlisted or delisted because of its extremely limited distribution and tenuous habitat conditions. Downlisting the species to threatened classification could be considered if all recovery actions, as proposed in this Recovery Plan, are implemented. 2. What must be done to reach recovery: Steps to reach recovery include maintaining and enhancing habitats where Big Bend gambusia presently exist and establishing populations in other suitable locations. To insure against loss of the species a captive population must be maintained until survival of several populations in the wild are assured. 3. Management needs to keep the species recovered: To keep the species recovered it will be necessary to monitor populations to insure they are viable and the habitats are being managed to maintain the species. DISCLAIMER This is the completed Big Bend Gambusia Recovery Plan. It has been approved by the U.S. Fish and Wildlife Service. It dces not necessarily represent official positions or approvals of cooperating agencies and it does not necessarily represent the views of all recovery team members/ individuals, who played the key role in preparing the plan.
    [Show full text]
  • Reproductive Biology of Poecilia Sphenops Valenciennes, 1846 (Cyprinidontiformes: Poeciliidae) at the Emiliano Zapata Reservoir in Morelos, Mexico
    Neotropical Ichthyology, 14(2): e140127, 2016 Journal homepage: www.scielo.br/ni DOI: 10.1590/1982-0224-20140127 Published online: 20 June 2016 (ISSN 1982-0224) Reproductive biology of Poecilia sphenops Valenciennes, 1846 (Cyprinidontiformes: Poeciliidae) at the Emiliano Zapata Reservoir in Morelos, Mexico José L. Gómez-Márquez, Bertha Peña-Mendoza and José L. Guzmán-Santiago1 Poecilia sphenops is a native species recently recorded in the Balsas basin and the Amacuzac River in Morelos (Mexico), in which it is abundant and widely distributed. This study analyzed some aspects of the reproductive biology of Poecilia sphenops from the Emiliano Zapata Reservoir, in Central Mexico. Specimens were collected using a 20 m-long seine with a 5 mm mesh size, from January to December 2006. A total of 581 specimens were collected: 407 females (70.0%), 83 males (14.3%) and 91 individuals with no differentiated sex (15.7%). Fish ranged from 20 to 96 mm in total length and 0.01 to 13.07 g in body weight. The female to male sex ratio (4.9:1) deviated significantly from the unity (χ²= 214.2, p<0.05). Monthly variations in gonadosomatic (GSI) and hepatosomatic (HSI) indexes and ovarian development stages showed that P. sphenops spawning season occurred between July and October, concurring with the rainy season. Another reproduction peak was registered in February. The largest length registered for males and females was 96 mm and 83 mm, respectively. Poecilia sphenops es una especie nativa registrada recientemente en la cuenca del Balsas y el río Amacuzac en Morelos (México), en el cual es abundante y ampliamente distribuida.
    [Show full text]
  • Lagoon Resident Fish Species of Conservation Interest According to the Habitat Directive (92/43/CEE): a Review on Their Potential Use As Ecological Indicator Species
    water Review Lagoon Resident Fish Species of Conservation Interest According to the Habitat Directive (92/43/CEE): A Review on Their Potential Use as Ecological Indicator Species Chiara Facca * , Francesco Cavraro, Piero Franzoi and Stefano Malavasi Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, via Torino 155, 30175 Venice, Italy; [email protected] (F.C.); [email protected] (P.F.); [email protected] (S.M.) * Correspondence: [email protected]; Tel.: +39-(0)-41-234-7733 Received: 22 May 2020; Accepted: 17 July 2020; Published: 20 July 2020 Abstract: Transitional waters are fragile ecosystems with high ecological, social and economic values, that undergo numerous threats. According to the information provided by European Member States in the framework of the European Directive 92/43/EEC (Habitat Directive), the main threat to these ecosystems is represented by morphological and hydrological changes. The present work focuses on six lagoon fish species included in the Habitat Directive annex II (species requiring conservation measures: Aphanius fasciatus, A. iberus, Knipowitschia panizzae, Ninnigobius canestrinii, Valencia hispanica and V. letourneuxi) that spend their entire life cycle in the Mediterranean priority habitat 1150* “Coastal lagoons”. The overview of the current scientific literature allowed us to highlight how the presence and abundance of these species may provide important indications on the conservation status of coastal lagoon habitats. In fact, their occurrence, distribution and biology depend on the presence of peculiar structures, such as salt marshes, small channels, isolated pools and oligohaline areas. Coastal lagoon fragmentation and habitat loss have led to a significant reduction in genetic diversity or local population extinction.
    [Show full text]
  • Description of Poecilia (Acanthophacelus) Wingei N
    Contributions to Zoology, 74 (1/2) 97-115 (2005) Description of Poecilia (Acanthophacelus) wingei n. sp. from the Paría Peninsula, Venezuela, including notes on Acanthophacelus Eigenmann, 1907 and other subgenera of Poecilia Bloch and Schneider, 1801 (Teleostei, Cyprinodontiformes, Poeciliidae) Fred. N. Poeser1, Michael Kempkes2, Isaäc J. H. Isbrücker1 1 Zoological Museum Amsterdam, University of Amsterdam, P.O. Box 94766, 1090 GT, Amsterdam, The Nether- lands, e-mail: [email protected]; 2 Am Mühlenberg 25, D-46419 Isselburg – Anholt, Germany Keywords: Guppies, Poecilia reticulata, P. wingei, melanophore patterns, character displacement, Paría Peninsula, despeciation Abstract Remarks on the 'Endler’s live-bearer' ...................................... 113 Acknowledgements ..................................................................... 114 The taxonomy of the common guppy, Poecilia reticulata Peters, References ..................................................................................... 114 1859, is reviewed and the closely related Campoma guppy, P. wingei n. sp., is described. Formerly, the common guppy was not judged to be closely related to any other species of Poecilia, but Introduction the new species is the second species to be allocated in the sub- genus Acanthophacelus Eigenmann, 1907. The recognition of P. wingei results from observed character displacement, i.e., on the The common guppy, Poecilia reticulata Peters, 1859, interaction between two closely related species in a shared envi- has a long history as
    [Show full text]