A Large 28S Rdna-Based Phylogeny Confirms the Limitations Of
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Jau Catfish Amazon Species Watch
The ultimate in ‘hosted’ angling adventures throughout the Amazon UK Agent and Promotional Management for Amazon-Angler.com Contact: Facebook @amazon-connect.co.uk, Web: www.amazon-connect.co.uk & [email protected] Amazon Species Watch Jau Catfish Scientific Classification Another beauty of the Amazon - THE JAU or Gilded Catfish Kingdom: Animalia The Jau (Zungaro zungaro) is one of the three big Catfish species (Piraiba the largest), within the Phylum: Chordata Amazon and Orinoco basins and can be caught throughout Brazil, Peru, Bolivia, Colombia, Class: Actinopterygii Ecuador, Guyana and Venezuela. Whilst the current record sits at c.109lb (Brazil) weights of Order: Siluriformes c.200lb are highly likely. The Jau is solid muscle, and is at home in slow moving waters, deep Family: Pimelodidae holes as well as in fast currents. Easily identifiable through its dark and often ‘marbled’ skin, Genus: Zungaro these catfish have strength and stamina on their side, and will always use current and/or Species: Z. zungaro structure to their advantage. Once hooked, they are fierce fighters with a penchant for changing direction when least expected, often catching the angler off guard. One thing’s for certain though, give them get the edge and they will run rings around you. As with the other big Catfish of the region, strong primary and terminal tackle is essential. Catching Jau Use of either ‘live’ or ‘dead’ bait’ are effective and proven techniques. For both, don’t be put off by the size of bait you will use, large Jau have huge mouths and can easily swallow in whole fish or chunks of ‘cut-bait’ at 5lb+, but you will need to get the bait down as quickly as possible and then hold it there. -
Embryonic Development in Zungaro Jahu
Zygote 25 (February), pp. 17–31. c Cambridge University Press 2016 doi:10.1017/S0967199416000277 First Published Online 22 November 2016 Embryonic development in Zungaro jahu Camila Marques2, Francine Faustino3, Bruno Bertolucci2, Maria do Carmo Faria Paes4, Regiane Cristina da Silva4 and Laura Satiko Okada Nakaghi1 Fundação Amaral Carvalho, Jaú, São Paulo, Brazil; Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil; and UNESP’s Aquaculture Centre (CAUNESP), Universidade Estadual Paulista, Campus Jaboticabal, São Paulo, Brazil Date submitted: 26.06.2016. Date revised: 01.08.2016. Date accepted: 16.08.2016 Summary The aim of this study was to characterize the embryonic development of Zungaro jahu, a fresh water teleostei commonly known as ‘jaú’. Samples were collected at pre-determined times from oocyte release to larval hatching and analysed under light microscopy, transmission electron microscopy and scanning electron microscopy. At the first collection times, the oocytes and eggs were spherical and yellowish, with an evident micropyle. Embryo development took place at 29.4 ± 1.5°C and was divided into seven stages: zygote, cleavage, morula, blastula, gastrula, organogenesis, and hatching. The differentiation of the animal and vegetative poles occured during the zygote stage, at 10 min post-fertilization (mpf), leading to the development of the egg cell at 15 mpf. From 20 to 75 mpf, successive cleavages resulted in the formation of 2, 4, 8, 16, 32 and 64 blastomeres. The morula stage was observed between 90 and 105 mpf, and the blastula and gastrula stage at 120 and 180 mpf; respectively. The end of the gastrula stage was characterized by the presence of the yolk plug at 360 mpf. -
Inland Waters
477 Fish, crustaceans, molluscs, etc Capture production by species items America, South - Inland waters C-03 Poissons, crustacés, mollusques, etc Captures par catégories d'espèces Amérique du Sud - Eaux continentales (a) Peces, crustáceos, moluscos, etc Capturas por categorías de especies América del Sur - Aguas continentales English name Scientific name Species group Nom anglais Nom scientifique Groupe d'espèces 2012 2013 2014 2015 2016 2017 2018 Nombre inglés Nombre científico Grupo de especies t t t t t t t Common carp Cyprinus carpio 11 321 114 134 179 169 46 240 Cyprinids nei Cyprinidae 11 425 429 423 400 400 400 400 ...A Caquetaia kraussii 12 ... ... 11 182 111 559 64 Nile tilapia Oreochromis niloticus 12 5 7 3 6 255 257 159 Tilapias nei Oreochromis (=Tilapia) spp 12 9 133 9 210 9 093 8 690 8 600 8 600 8 600 Oscar Astronotus ocellatus 12 1 847 1 862 1 951 1 941 1 825 1 813 1 815 Velvety cichlids Astronotus spp 12 391 385 318 571 330 345 334 Green terror Aequidens rivulatus 12 26 38 20 24 36 30 34 Cichlids nei Cichlidae 12 13 013 13 123 12 956 12 400 12 403 12 735 12 428 Arapaima Arapaima gigas 13 1 478 1 504 1 484 2 232 1 840 2 441 1 647 Arawana Osteoglossum bicirrhosum 13 1 642 1 656 1 635 1 570 1 571 2 200 2 056 Banded astyanax Astyanax fasciatus 13 1 043 1 052 1 039 1 000 1 000 1 000 1 000 ...A Brycon orbignyanus 13 8 8 8 8 8 9 14 ...A Brycon dentex 13 35 20 5 6 11 10 6 ...A Brycon spp 13 .. -
The Biology and Genetics of Electric Organ of Electric Fishes
International Journal of Zoology and Animal Biology ISSN: 2639-216X The Biology and Genetics of Electric Organ of Electric Fishes Khandaker AM* Editorial Department of Zoology, University of Dhaka, Bangladesh Volume 1 Issue 5 *Corresponding author: Ashfaqul Muid Khandaker, Faculty of Biological Sciences, Received Date: November 19, 2018 Department of Zoology, Branch of Genetics and Molecular Biology, University of Published Date: November 29, 2018 DOI: 10.23880/izab-16000131 Dhaka, Bangladesh, Email: [email protected] Editorial The electric fish comprises an interesting feature electric organs and sense feedback signals from their called electric organ (EO) which can generate electricity. EODs by electroreceptors in the skin. These weak signals In fact, they have an electrogenic system that generates an can also serve in communication within and between electric field. This field is used by the fish as a carrier of species. But the strongly electric fishes produce electric signals for active sensing and communicating with remarkably powerful pulses. A large electric eel generates other electric fish [1]. The electric discharge from this in excess of 500 V. A large Torpedo generates a smaller organ is used for navigation, communication, and defense voltage, about 50 V in air, but the current is larger and the and also for capturing prey [2]. The power of electric pulse power in each case can exceed I kW [5]. organ varies from species to species. Some electric fish species can produce strong current (100 to 800 volts), The generating elements of the electric organs are especially electric eel and some torpedo electric rays are specialized cells termed electrocytes. -
Report on the Status of Mediterranean Chondrichthyan Species
United Nations Environment Programme Mediterranean Action Plan Regional Activity Centre For Specially Protected Areas REPORT ON THE STATUS OF MEDITERRANEAN CHONDRICHTHYAN SPECIES D. CEBRIAN © L. MASTRAGOSTINO © R. DUPUY DE LA GRANDRIVE © Note : The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of UNEP concerning the legal status of any State, Territory, city or area, or of its authorities, or concerning the delimitation of their frontiers or boundaries. © 2007 United Nations Environment Programme Mediterranean Action Plan Regional Activity Centre for Specially Protected Areas (RAC/SPA) Boulevard du leader Yasser Arafat B.P.337 –1080 Tunis CEDEX E-mail : [email protected] Citation: UNEP-MAP RAC/SPA, 2007. Report on the status of Mediterranean chondrichthyan species. By Melendez, M.J. & D. Macias, IEO. Ed. RAC/SPA, Tunis. 241pp The original version (English) of this document has been prepared for the Regional Activity Centre for Specially Protected Areas (RAC/SPA) by : Mª José Melendez (Degree in Marine Sciences) & A. David Macías (PhD. in Biological Sciences). IEO. (Instituto Español de Oceanografía). Sede Central Spanish Ministry of Education and Science Avda. de Brasil, 31 Madrid Spain [email protected] 2 INDEX 1. INTRODUCTION 3 2. CONSERVATION AND PROTECTION 3 3. HUMAN IMPACTS ON SHARKS 8 3.1 Over-fishing 8 3.2 Shark Finning 8 3.3 By-catch 8 3.4 Pollution 8 3.5 Habitat Loss and Degradation 9 4. CONSERVATION PRIORITIES FOR MEDITERRANEAN SHARKS 9 REFERENCES 10 ANNEX I. LIST OF CHONDRICHTHYAN OF THE MEDITERRANEAN SEA 11 1 1. -
CBD Fifth National Report
i ii GUYANA’S FIFTH NATIONAL REPORT TO THE CONVENTION ON BIOLOGICAL DIVERSITY Approved by the Cabinet of the Government of Guyana May 2015 Funded by the Global Environment Facility Environmental Protection Agency Ministry of Natural Resources and the Environment Georgetown September 2014 i ii Table of Contents ACKNOWLEDGEMENT ........................................................................................................................................ V ACRONYMS ....................................................................................................................................................... VI EXECUTIVE SUMMARY ......................................................................................................................................... I 1. INTRODUCTION .............................................................................................................................................. 1 1.1 DESCRIPTION OF GUYANA .......................................................................................................................................... 1 1.2 RATIFICATION AND NATIONAL REPORTING TO THE UNCBD .............................................................................................. 2 1.3 BRIEF DESCRIPTION OF GUYANA’S BIOLOGICAL DIVERSITY ................................................................................................. 3 SECTION I: STATUS, TRENDS, THREATS AND IMPLICATIONS FOR HUMAN WELL‐BEING ...................................... 12 2. IMPORTANCE OF BIODIVERSITY -
Diversity and Risk Patterns of Freshwater Megafauna: a Global Perspective
Diversity and risk patterns of freshwater megafauna: A global perspective Inaugural-Dissertation to obtain the academic degree Doctor of Philosophy (Ph.D.) in River Science Submitted to the Department of Biology, Chemistry and Pharmacy of Freie Universität Berlin By FENGZHI HE 2019 This thesis work was conducted between October 2015 and April 2019, under the supervision of Dr. Sonja C. Jähnig (Leibniz-Institute of Freshwater Ecology and Inland Fisheries), Jun.-Prof. Dr. Christiane Zarfl (Eberhard Karls Universität Tübingen), Dr. Alex Henshaw (Queen Mary University of London) and Prof. Dr. Klement Tockner (Freie Universität Berlin and Leibniz-Institute of Freshwater Ecology and Inland Fisheries). The work was carried out at Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Germany, Freie Universität Berlin, Germany and Queen Mary University of London, UK. 1st Reviewer: Dr. Sonja C. Jähnig 2nd Reviewer: Prof. Dr. Klement Tockner Date of defense: 27.06. 2019 The SMART Joint Doctorate Programme Research for this thesis was conducted with the support of the Erasmus Mundus Programme, within the framework of the Erasmus Mundus Joint Doctorate (EMJD) SMART (Science for MAnagement of Rivers and their Tidal systems). EMJDs aim to foster cooperation between higher education institutions and academic staff in Europe and third countries with a view to creating centres of excellence and providing a highly skilled 21st century workforce enabled to lead social, cultural and economic developments. All EMJDs involve mandatory mobility between the universities in the consortia and lead to the award of recognised joint, double or multiple degrees. The SMART programme represents a collaboration among the University of Trento, Queen Mary University of London and Freie Universität Berlin. -
Global Catfish Biodiversity 17
American Fisheries Society Symposium 77:15–37, 2011 © 2011 by the American Fisheries Society Global Catfi sh Biodiversity JONATHAN W. ARMBRUSTER* Department of Biological Sciences, Auburn University 331 Funchess, Auburn University, Alabama 36849, USA Abstract.—Catfi shes are a broadly distributed order of freshwater fi shes with 3,407 cur- rently valid species. In this paper, I review the different clades of catfi shes, all catfi sh fami- lies, and provide information on some of the more interesting aspects of catfi sh biology that express the great diversity that is present in the order. I also discuss the results of the widely successful All Catfi sh Species Inventory Project. Introduction proximately 10.8% of all fi shes and 5.5% of all ver- tebrates are catfi shes. Renowned herpetologist and ecologist Archie Carr’s But would every one be able to identify the 1941 parody of dichotomous keys, A Subjective Key loricariid catfi sh Pseudancistrus pectegenitor as a to the Fishes of Alachua County, Florida, begins catfi sh (Figure 2A)? It does not have scales, but it with “Any damn fool knows a catfi sh.” Carr is right does have bony plates. It is very fl at, and its mouth but only in part. Catfi shes (the Siluriformes) occur has long jaws but could not be called large. There is on every continent (even fossils are known from a barbel, but you might not recognize it as one as it Antarctica; Figure 1); and the order is extremely is just a small extension of the lip. There are spines well supported by numerous complex synapomor- at the front of the dorsal and pectoral fi ns, but they phies (shared, derived characteristics; Fink and are not sharp like in the typical catfi sh. -
AQUACULTURE in the ENSENADA REGION of NORTHERN BAJA CALIFORNIA, MEXICO José A
University of Connecticut OpenCommons@UConn Department of Ecology & Evolutionary Biology - Publications Stamford 4-1-2008 MARINE SCIENCE ASSESSMENT OF CAPTURE-BASED TUNA (Thunnus orientalis) AQUACULTURE IN THE ENSENADA REGION OF NORTHERN BAJA CALIFORNIA, MEXICO José A. Zertuche-González Universidad Autonoma de Baja California Ensenada Oscar Sosa-Nishizaki Centro de Investigacion Cientifica y de Educacion Superior de Ensenada (CICESE) Juan G. Vaca Rodriguez Universidad Autonoma de Baja California Ensenada Raul del Moral Simanek Consejo Nacional de Ciencia y Tecnologia (CONACyT) Ensenada Charles Yarish University of Connecticut, [email protected] Recommended Citation Zertuche-González, José A.; Sosa-Nishizaki, Oscar; Vaca Rodriguez, Juan G.; del Moral Simanek, Raul; Yarish, Charles; and Costa- Pierce, Barry A., "MARINE SCIENCE ASSESSMENT OF CAPTURE-BASED TUNA (Thunnus orientalis) AQUACULTURE IN THE ENSENADA REGION OF NORTHERN BAJA CALIFORNIA, MEXICO" (2008). Publications. 1. https://opencommons.uconn.edu/ecostam_pubs/1 See next page for additional authors Follow this and additional works at: https://opencommons.uconn.edu/ecostam_pubs Part of the Marine Biology Commons Authors José A. Zertuche-González, Oscar Sosa-Nishizaki, Juan G. Vaca Rodriguez, Raul del Moral Simanek, Charles Yarish, and Barry A. Costa-Pierce This report is available at OpenCommons@UConn: https://opencommons.uconn.edu/ecostam_pubs/1 1 MARINE SCIENCE ASSESSMENT OF CAPTURE-BASED TUNA (Thunnus orientalis) AQUACULTURE IN THE ENSENADA REGION OF NORTHERN BAJA CALIFORNIA, -
Food Composition and Digestive Enzymes in the Gut of the African Electric Catfish Malapterurus Electricus (Gmelin 1789) (Malapteruridae)
Food composition and digestive enzymes in the gut of the African electric catfish Malapterurus electricus (Gmelin 1789) (Malapteruridae) Item Type conference_item Authors Adedire, C.O.; Aiyegbeni, M.L.; Fagbenro, O.A. Download date 04/10/2021 18:18:20 Link to Item http://hdl.handle.net/1834/21364 FOOD CO OSITION AND DIGESTIVE ENZY II S IN THE GUT OF T E AFRICAN ELECTRIC CATFISH, Malapterurus electricus (GMELIN 1789) (MALAPTERU AE) Oyedapo A. FAGBENRO*, Chris O. ADED & Michael L. AIYEGI:. *Department of Fisheries and Wildlife, **Department of Biology, Federal UniversiV of Technology, P.M.B. 704, Akure, NIGERIA. ABST CT Analyses of stomach contents of 330 Malapterurus electricus (Standard length, 10.1-30.5cm) in Mahin Lagoon (Southwestern Nigeria) establisheditas a bottom feeder.There was a preponderance of insects accounting for >80% occurrence and > 25% of total volume in stomachs of specimens, suggesting a stenophagous predatory habit.Qualitative and quantitative assays of digestive enzymes in the different regions of the gut (oesophagus, stomach, doudenum, ileum, rectum) were investigated. CarbohydraseS (amylase, maltase), chitinase, proteases (pepsin, chymotrypsin, trypsin) and lipases were detected in different gut regions with different activity. The pattern of distribution and relative activity of the enzymes correlated with his predatory diet. Key Words: Carbohydrase, proteases,lipases,g,utregions,electriccatfish, Malcrpterurus electricus. ODUCTION The African electric catfishes, Malapterurus lacepede (Family Malapteruridae) are endemic to tropical Africa (Leveque et al., 1991), and of the three species presently recognized (M ekctricus M rninjiriya, M microstoma) (Teugels, 1996), M electricus (Gmelin 1789) is common in commercial catches in west Africa (Holden & Reed, 1972).It is more or less available throughout the year and the dietary habits have been previously studied by Sagua (1979, 1987), based on samples taken in freshwater floodplains and Lake Kainji (Nigeria). -
Ontogenesis and Phylogenetic Interrelationships of Parasitic Flatworms
W&M ScholarWorks Reports 1981 Ontogenesis and phylogenetic interrelationships of parasitic flatworms Boris E. Bychowsky Follow this and additional works at: https://scholarworks.wm.edu/reports Part of the Aquaculture and Fisheries Commons, Marine Biology Commons, Oceanography Commons, Parasitology Commons, and the Zoology Commons Recommended Citation Bychowsky, B. E. (1981) Ontogenesis and phylogenetic interrelationships of parasitic flatworms. Translation series (Virginia Institute of Marine Science) ; no. 26. Virginia Institute of Marine Science, William & Mary. https://scholarworks.wm.edu/reports/32 This Report is brought to you for free and open access by W&M ScholarWorks. It has been accepted for inclusion in Reports by an authorized administrator of W&M ScholarWorks. For more information, please contact [email protected]. /J,J:>' :;_~fo c. :-),, ONTOGENESIS AND PHYLOGENETIC INTERRELATIONSHIPS OF PARASITIC FLATWORMS by Boris E. Bychowsky Izvestiz Akademia Nauk S.S.S.R., Ser. Biol. IV: 1353-1383 (1937) Edited by John E. Simmons Department of Zoology University of California at Berkeley Berkeley, California Translated by Maria A. Kassatkin and Serge Kassatkin Department of Slavic Languages and Literature University of California at Berkeley Berkeley, California Translation Series No. 26 VIRGINIA INSTITUTE OF MARINE SCIENCE COLLEGE OF WILLIAM AND MARY Gloucester Point, Virginia 23062 William J. Hargis, Jr. Director 1981 Preface This publication of Professor Bychowsky is a major contribution to the study of the phylogeny of parasitic flatworms. It is a singular coincidence for it t6 have appeared in print the same year as Stunkardts nThe Physiology, Life Cycles and Phylogeny of the Parasitic Flatwormsn (Amer. Museum Novitates, No. 908, 27 pp., 1937 ), and this editor well remembers perusing the latter under the rather demanding tutelage of A.C. -
In Narcine Entemedor Jordan & Starks, 1895
A peer-reviewed open-access journal ZooKeys 852: 1–21Two (2019) new species of Acanthobothrium in Narcine entemedor from Mexico 1 doi: 10.3897/zookeys.852.28964 RESEARCH ARTICLE http://zookeys.pensoft.net Launched to accelerate biodiversity research Two new species of Acanthobothrium Blanchard, 1848 (Onchobothriidae) in Narcine entemedor Jordan & Starks, 1895 (Narcinidae) from Acapulco, Guerrero, Mexico Francisco Zaragoza-Tapia1, Griselda Pulido-Flores1, Juan Violante-González2, Scott Monks1 1 Universidad Autónoma del Estado de Hidalgo, Centro de Investigaciones Biológicas, Apartado Postal 1-10, C.P. 42001, Pachuca, Hidalgo, México 2 Universidad Autónoma de Guerrero, Unidad Académica de Ecología Marina, Gran Vía Tropical No. 20, Fraccionamiento Las Playas, C.P. 39390, Acapulco, Guerrero, México Corresponding author: Scott Monks ([email protected]) Academic editor: B. Georgiev | Received 14 August 2018 | Accepted 25 April 2019 | Published 5 June 2019 http://zoobank.org/0CAC34BD-1C75-415F-973D-C37E4557D06F Citation: Zaragoza-Tapia F, Pulido-Flores G, Violante-González J, Monks S (2019) Two new species of Acanthobothrium Blanchard, 1848 (Onchobothriidae) in Narcine entemedor Jordan & Starks, 1895 (Narcinidae) from Acapulco, Guerrero, Mexico. ZooKeys 852: 1–21. https://doi.org/10.3897/zookeys.852.28964 Abstract Two species of Acanthobothrium (Onchoproteocephalidea: Onchobothriidae) are described from the spiral intestine of Narcine entemedor Jordan & Starks, 1895, in Bahía de Acapulco, Acapulco, Guerrero, Mexico. Based on the four criteria used for the identification of species of Acanthobothrium, A. soniae sp. nov. is a Category 2 species (less than 15 mm in total length with less than 50 proglottids, less than 80 testes, and with the ovary asymmetrical in shape).