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Bulletin of the British Museum (Natural History)
A new catfish from Sierra Leone Gordon Jon Howes Zoology Department, British Museum (Natural History), Cromwell Road, London SW7 5BD A collection of freshwater fishes from Sierra Leone made by Dr A. I. Payne contained three specimens of a previously undescribed dwarf catfish. At first sight these small fishes (33-5- 36 mm SL) were thought to be the juveniles of a Synodontis species, but closer examination showed many significant differences. Furthermore, dissection of two specimens revealed that they were adult females, having ripe ovaries. In overall morphology the new catfish appears closer to members of the Mochokidae sensu lato than to those of any other siluroid family, (see p. 168). The possibility that these fishes belonged to the dwarf mochokid genus Microsynodontis was dispelled when comparisons were made with species of that genus. MOCHOKIELLA gen. nov. Fishes of a small size with a shallow body (depth 25-5-27-9 of SL). Head broad (almost equal to its length) with dorsal profile sloped, snout rounded, ethmoid with narrow rostral process. Nostrils widely separated, the posterior situated midway between the anterior nostril and the orbital rim. Anterior nostril tubular. Mouth small, lower lip developed only at the corners of the mouth. Premaxillary teeth short and conical, in a broad patch. Dentary teeth like those on the premaxilla, set in a broad semi-crescentic band. Vomerine teeth absent. One pair of maxillary and two pairs of mandibular barbels. The maxillary barbel long, reaching to the tip of the cleithral process. Outer mandibular barbel extending to halfway along the cleithral process, the inner reaching to the base of the pectoral spine. -
Evidence of Hidden Diversity and Taxonomic Conflicts in Five Stream Fishes from the Eastern Zimbabwe Highlands Freshwater Ecoregion
A peer-reviewed open-access journal ZooKeys 768: 69–95Evidence (2018) of hidden diversity and taxonomic conflicts in five stream fishes... 69 doi: 10.3897/zookeys.768.21944 RESEARCH ARTICLE http://zookeys.pensoft.net Launched to accelerate biodiversity research Evidence of hidden diversity and taxonomic conflicts in five stream fishes from the Eastern Zimbabwe Highlands freshwater ecoregion Albert Chakona1,2, Wilbert T. Kadye2, Taurai Bere3, Daniel N. Mazungula1,2, Emmanuel Vreven4,5 1 South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown, South Africa, 6140 2 Department of Ichthyology and Fisheries Science, Rhodes University, P.O. Box 94, Grahamstown, South Africa, 6140 3 School of Wildlife, Ecology and Conservation, Chinhoyi University of Technology, P. Bag 7724, Chinhoyi, Zimbabwe 4 Royal Museum for Central Africa, Section of Vertebrates, Ichthyology, Leuvensesteenweg 13, 3080, Tervuren, Belgium 5 KU Leuven, Department of Biology, Laboratory of Biodiversity and Evolutio- nary Genomics, Deberiotstraat 32, 3000 Leuven, Belgium Corresponding author: Albert Chakona ([email protected]) Academic editor: N. Bogutskaya | Received 30 October 2018 | Accepted 25 April 2018 | Published 19 June 2018 http://zoobank.org/9621930C-8C43-40D0-8554-684035E99FAA Citation: Chakona A, Kadye WT, Bere T, Mazungula DN, Vreven E (2018) Evidence of hidden diversity and taxonomic conflicts in five stream fishes from the Eastern Zimbabwe Highlands freshwater ecoregion. ZooKeys 768: 69–95. https://doi.org/10.3897/zookeys.768.21944 Abstract -
TAAS 39(4).Indb
This article was downloaded by: [Mr O LF Weyl] On: 30 December 2014, At: 07:56 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK African Journal of Aquatic Science Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/taas20 Species-specific impact of introduced largemouth bass Micropterus salmoides in the Groot Marico Freshwater Ecosystem Priority Area, South Africa PK Kimberga, DJ Woodfordbc, H Rouxd & OLF Weylbc a Hydrocynus Consulting, Kyalami, South Africa b South African Institute for Aquatic Biodiversity (SAIAB), Grahamstown, South Africa c Centre for Invasion Biology, SAIAB, Grahamstown, South Africa d Department of Rural, Environment and Agricultural Development, North West Provincial Government, Mahikeng, South Africa Published online: 02 Dec 2014. Click for updates To cite this article: PK Kimberg, DJ Woodford, H Roux & OLF Weyl (2014) Species-specific impact of introduced largemouth bass Micropterus salmoides in the Groot Marico Freshwater Ecosystem Priority Area, South Africa, African Journal of Aquatic Science, 39:4, 451-458, DOI: 10.2989/16085914.2014.976169 To link to this article: http://dx.doi.org/10.2989/16085914.2014.976169 PLEASE SCROLL DOWN FOR ARTICLE Taylor & Francis makes every effort to ensure the accuracy of all the information (the “Content”) contained in the publications on our platform. However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. -
AN ECOLOGICAL and SYSTEMATIC SURVEY of FISHES in the RAPIDS of the LOWER ZA.Fre OR CONGO RIVER
AN ECOLOGICAL AND SYSTEMATIC SURVEY OF FISHES IN THE RAPIDS OF THE LOWER ZA.fRE OR CONGO RIVER TYSON R. ROBERTS1 and DONALD J. STEWART2 CONTENTS the rapids habitats, and the adaptations and mode of reproduction of the fishes discussed. Abstract ______________ ----------------------------------------------- 239 Nineteen new species are described from the Acknowledgments ----------------------------------- 240 Lower Zaire rapids, belonging to the genera Introduction _______________________________________________ 240 Mormyrus, Alestes, Labeo, Bagrus, Chrysichthys, Limnology ---------------------------------------------------------- 242 Notoglanidium, Gymnallabes, Chiloglanis, Lampro Collecting Methods and Localities __________________ 244 logus, Nanochromis, Steatocranus, Teleogramma, Tabulation of species ---------------------------------------- 249 and Mastacembelus, most of them with obvious Systematics -------------------------------------------------------- 249 modifications for life in the rapids. Caecomasta Campylomormyrus _______________ 255 cembelus is placed in the synonymy of Mastacem M ormyrus ____ --------------------------------- _______________ 268 belus, and morphologically intermediate hybrids Alestes __________________ _________________ 270 reported between blind, depigmented Mastacem Bryconaethiops -------------------------------------------- 271 belus brichardi and normally eyed, darkly pig Labeo ---------------------------------------------------- _______ 274 mented M astacembelus brachyrhinus. The genera Bagrus -
A Guide to the Parasites of African Freshwater Fishes
A Guide to the Parasites of African Freshwater Fishes Edited by T. Scholz, M.P.M. Vanhove, N. Smit, Z. Jayasundera & M. Gelnar Volume 18 (2018) Chapter 2.1. FISH DIVERSITY AND ECOLOGY Martin REICHARD Diversity of fshes in Africa Fishes are the most taxonomically diverse group of vertebrates and Africa shares a large portion of this diversity. This is due to its rich geological history – being a part of Gondwana, it shares taxa with the Neotropical region, whereas recent close geographical affnity to Eurasia permitted faunal exchange with European and Asian taxa. At the same time, relative isolation and the complex climatic and geological history of Africa enabled major diversifcation within the continent. The taxonomic diversity of African freshwater fshes is associated with functional and ecological diversity. While freshwater habitats form a tiny fraction of the total surface of aquatic habitats compared with the marine environment, most teleost fsh diversity occurs in fresh waters. There are over 3,200 freshwater fsh species in Africa and it is likely several hundreds of species remain undescribed (Snoeks et al. 2011). This high diversity and endemism is likely mirrored in diversity and endemism of their parasites. African fsh diversity includes an ancient group of air-breathing lungfshes (Protopterus spp.). Other taxa are capable of breathing air and tolerate poor water quality, including several clariid catfshes (e.g., Clarias spp.; Fig. 2.1.1D) and anabantids (Ctenopoma spp.). Africa is also home to several bichir species (Polypterus spp.; Fig. 2.1.1A), an ancient fsh group endemic to Africa, and bonytongue Heterotis niloticus (Cuvier, 1829) (Osteoglossidae), a basal actinopterygian fsh. -
Conference Proceedings 2006
FOSAF THE FEDERATION OF SOUTHERN AFRICAN FLYFISHERS PROCEEDINGS OF THE 10 TH YELLOWFISH WORKING GROUP CONFERENCE STERKFONTEIN DAM, HARRISMITH 07 – 09 APRIL 2006 Edited by Peter Arderne PRINTING & DISTRIBUTION SPONSORED BY: sappi 1 CONTENTS Page List of participants 3 Press release 4 Chairman’s address -Bill Mincher 5 The effects of pollution on fish and people – Dr Steve Mitchell 7 DWAF Quality Status Report – Upper Vaal Management Area 2000 – 2005 - Riana 9 Munnik Water: The full picture of quality management & technology demand – Dries Louw 17 Fish kills in the Vaal: What went wrong? – Francois van Wyk 18 Water Pollution: The viewpoint of Eco-Care Trust – Mornē Viljoen 19 Why the fish kills in the Vaal? –Synthesis of the five preceding presentations 22 – Dr Steve Mitchell The Elands River Yellowfish Conservation Area – George McAllister 23 Status of the yellowfish populations in Limpopo Province – Paul Fouche 25 North West provincial report on the status of the yellowfish species – Daan Buijs & 34 Hermien Roux Status of yellowfish in KZN Province – Rob Karssing 40 Status of the yellowfish populations in the Western Cape – Dean Impson 44 Regional Report: Northern Cape (post meeting)– Ramogale Sekwele 50 Yellowfish conservation in the Free State Province – Pierre de Villiers 63 A bottom-up approach to freshwater conservation in the Orange Vaal River basin – 66 Pierre de Villiers Status of the yellowfish populations in Gauteng Province – Piet Muller 69 Yellowfish research: A reality to face – Dr Wynand Vlok 72 Assessing the distribution & flow requirements of endemic cyprinids in the Olifants- 86 Doring river system - Bruce Paxton Yellowfish genetics projects update – Dr Wynand Vlok on behalf of Prof. -
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. -
Occasional Papers of the Museum of Zoology University of Michigan
February, 2006 OCCASIONAL PAPERS OF THE MUSEUM OF ZOOLOGY UNIVERSITY OF MICHIGAN CHILOGLANIS PRODUCTUS, A NEW SPECIES OF SUCKERMOUTH CATFISH (SILURIFORMES:MOCHOKIDAE) FROM ZAMBIA By Heok Hee Ngl and Reeve M. Bailey1 ABSTRACT.- Chiloglaizis productus, new species, is described from the Lunzua River, which drains into the southern tip of Lake Tanganyika in Zambia. It is easily distinguished from congeners in having a color pattern consisting of a pale midlateral stripe on a purplish gray body and without any other distinct pale patches or bands, and by the nature of its sexual dimorphism in caudal fin shape: males have a produced caudal fin (vs. diamond shaped, forked or trilobate in males of otlicr sexually dimorphic congeners). Kcy words: Chiloglaninae, Lunzua River, Lake Tanganyika INTRODUCTION Suckermouth catfishes of the genus Chiloglanis Peters, 1868 are endemic to Africa and are easily recognized by a sucker or oral disc formed by the enlarged upper and lower lips and a naked body. A total of 45 nominal species of Chiloglanis have been recognized (Seegers, 1996). During an ichthyological survey in Zambia, the second author obtained material from the Lunzua River, tributary to the southern tip of Lake Tanganyika that is clearly different from described species. The description of this material as Chiloglanis productus, new species, forms the basis of this study. METHODS AND MATERIALS Measurements were made point-to-point using a dial caliper to the nearest 0.1 mm following the methods of Ng (2004) with the following addition: oral disc width is the widest transverse distance between the extremities of the oral disc. -
Introduction to Fisheries Management
LECTURE NNOTE ON FIS 201 (2Units) INTRODUCTION TO FISHERIES MANAGEMENT PREPARED BY DR (MRS) IKENWEIWE N. BOLATITO AQUACULTURE AND FISHERIES DEPARTMENT UNIVERSITY OF AGRICULTURE,ABEOKUTA 1 INTRODUCTION ICTHYOLOGY is the scientific study of fish. Fish, because of the possession of notochord belong to the phylum chordata. They are most numerous vertebrates. About 20,000 species are known to science, and compare to other classes, aves 98,600species and mammals 8600species, reptiles 6,000 spandamphibians 2,000species.Fish also in various shape and forms from the smallest niamoy17mmT.L the giant whale shark that measures 15m and heights 25 tonnes. Fish are poikilothermic cold blooded animals that live in aquatic environment Most fish , especially the recent species, have scales on their body and survive in aquatic environment by the use of gills for respiration. Another major characteristic of a typical fish is the presence of gill slits which cover the gills on the posterior. (1) FISH TAXONOMY. Everyone is at heart a taxonomist whether by virtue or necessity or because of mere curiosity. 1. To know/identify the difference component in a fish population. That is to name and arrange. 2. To study the population dynamics in a population. (Number of each species in a population.) 3. Important in fish culture propagation – to know the species of fish that is most suitable for culture. 4. To exchange information to people in other parts of the world living known that both are dealing on the same species. 5. Reduce confusion as same Latin word generally acceptable worldwide are used while vernacular names differ form one location to another. -
Malapterurus Minjiriya ERSS
Malapterurus minjiriya (a catfish, no common name) Ecological Risk Screening Summary U.S. Fish & Wildlife Service, February 2012 Revised, July 2018, August 2018 Web Version, 8/31/2018 1 Native Range and Status in the United States Native Range From Froese and Pauly (2018): “Africa: known from Niger River [Mali, Nigeria] and Volta River system [Burkina Faso, Ghana, Togo] [Norris 2002, 2003]. Also in the White Nile (Barro and Alvero Rivers) [Ethiopia], and Omo River [Ethiopia]; possibly also in Chad and Senegal basins but has not been collected here [Norris 2002].” “[In Nigeria:] Occurs in the middle [Norris 2002, 2003] and lower Niger [Olaosebikan and Raji 1998; Norris 2002] and the Niger delta [Norris 2003], including the rivers Sokoto, Rima, Nun, Benue and Taraba [Norris 2002], and in lakes Kainji [Olaosebikan and Raji 1998; Norris 2002] and Okoso [Norris 2002]. Type locality: Lake Kainji [Eschmeyer 1998].” According to Olaosebikan and Lalèyè (2010), Malapterpurus mijiriya is also located in Ouémé River in Benin. 1 Status in the United States No records of Malapterurus minjiriya in trade or in the wild in the United States were found. The Florida Fish and Wildlife Conservation Commission has listed the electric catfish M. minjiriya as a prohibited species. Prohibited nonnative species (FFWCC 2018), “are considered to be dangerous to the ecology and/or the health and welfare of the people of Florida. These species are not allowed to be personally possessed or used for commercial activities.” Means of Introductions in the United States No records of Malapterurus minjiriya in the wild in the United States were found. -
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). -
A New Species of Suckermouth Catfish (Mochokidae: Chiloglanis) from the Rio Mongo in Equatorial Guinea
Zootaxa 4652 (3): 507–519 ISSN 1175-5326 (print edition) https://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2019 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4652.3.7 http://zoobank.org/urn:lsid:zoobank.org:pub:386BA62C-B1EB-4AD3-8E9A-44951376185E A new species of suckermouth catfish (Mochokidae: Chiloglanis) from the Rio Mongo in Equatorial Guinea RAY C. SCHMIDT1,2 & CHRISTIAN BARRIENTOS3 1Biology Department, Randolph-Macon College, Ashland, VA 23005, USA 2Smithsonian Research Associate, National Museum of Natural History, Division of Fishes, Washington, DC 20560, USA 3Wildlife Conservation Society, Equatorial Guinea. Edificio Candy Vista Mar Of. 208 Bata Litoral, Equatorial Guinea Abstract A recent expedition surveyed freshwater fishes throughout the continental portion of Equatorial Guinea (Rio Muni). This portion of the Lower Guinean ichthyoprovince is relatively unknown with very few collections occurring since the 1960s. Sampling in the Rio Mongo, a tributary to the Rio Wele, yielded two Chiloglanis species; one putatively ascribed to the widespread species C. cameronensis, and the other species having similarities with C. harbinger described from the Lokoundje River in Cameroon. Morphometric analyses between the specimens from Rio Mongo and paratypes of C. harbinger confirm that they are distinct species and should be described as such. Here we describe Chiloglanis mongoensis sp. nov., a narrow endemic species only known from one locality in the Rio Mongo. We provide measurements from paratypes of C. harbinger and emphasize the need for further expeditions in the area. Key words: Endemism, specimen collection, allometric correction, biodiversity Introduction The Lower Guinea ichthyofaunal province stretches from the mouth of the Niger River to the mouth of the Congo River.