Bioenergetics and Growth of White Steenbras, Lithognathus Lithognathus, Under Culture Conditions
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TNP SOK 2011 Internet
GARDEN ROUTE NATIONAL PARK : THE TSITSIKAMMA SANP ARKS SECTION STATE OF KNOWLEDGE Contributors: N. Hanekom 1, R.M. Randall 1, D. Bower, A. Riley 2 and N. Kruger 1 1 SANParks Scientific Services, Garden Route (Rondevlei Office), PO Box 176, Sedgefield, 6573 2 Knysna National Lakes Area, P.O. Box 314, Knysna, 6570 Most recent update: 10 May 2012 Disclaimer This report has been produced by SANParks to summarise information available on a specific conservation area. Production of the report, in either hard copy or electronic format, does not signify that: the referenced information necessarily reflect the views and policies of SANParks; the referenced information is either correct or accurate; SANParks retains copies of the referenced documents; SANParks will provide second parties with copies of the referenced documents. This standpoint has the premise that (i) reproduction of copywrited material is illegal, (ii) copying of unpublished reports and data produced by an external scientist without the author’s permission is unethical, and (iii) dissemination of unreviewed data or draft documentation is potentially misleading and hence illogical. This report should be cited as: Hanekom N., Randall R.M., Bower, D., Riley, A. & Kruger, N. 2012. Garden Route National Park: The Tsitsikamma Section – State of Knowledge. South African National Parks. TABLE OF CONTENTS 1. INTRODUCTION ...............................................................................................................2 2. ACCOUNT OF AREA........................................................................................................2 -
Fasanbi SHOWCASE
Threatened Species Monitoring PROGRAMME Threatened Species in South Africa: A review of the South African National Biodiversity Institutes’ Threatened Species Programme: 2004–2009 Acronyms ADU – Animal Demography Unit ARC – Agricultural Research Council BASH – Big Atlassing Summer Holiday BIRP – Birds in Reserves Project BMP – Biodiversity Management Plan BMP-S – Biodiversity Management Plans for Species CFR – Cape Floristic Region CITES – Convention on International Trade in Endangered Species CoCT – City of Cape Town CREW – Custodians of Rare and Endangered Wildflowers CWAC – Co-ordinated Waterbird Counts DEA – Department of Environmental Affairs DeJaVU – December January Atlassing Vacation Unlimited EIA – Environmental Impact Assessment EMI – Environmental Management Inspector GBIF – Global Biodiversity Information Facility GIS – Geographic Information Systems IAIA – International Association for Impact Assessment IAIAsa – International Association for Impact Assessment South Africa IUCN – International Union for Conservation of Nature LAMP – Long Autumn Migration Project LepSoc – Lepidopterists’ Society of Africa MCM – Marine and Coastal Management MOA – memorandum of agreement MOU – memorandum of understanding NBI – National Botanical Institute NEMA – National Environmental Management Act NEMBA – National Environmental Management Biodiversity Act NGO – non-governmental organization NORAD – Norwegian Agency for Development Co–operation QDGS – quarter-degree grid square SABAP – Southern African Bird Atlas Project SABCA – Southern African -
Teleostei: Sparidae)*
ECOLOGYt OSMOREGULATION AND REPRODUCTIVE BIOLOGY OF THE WHITE STEENBRAS t LITHOGNATHUS LITHOGNATHUS (TELEOSTEI: SPARIDAE)* JOHN A. P. MEHL Cape Provincial Department of Nature Conservation and Zoological Institute, University of Stellenbosch PUBLISHED FEBRUARY 1974 ABSTRACT Over a one-year period 437 steenbras, Lithog1Ulthus Iithog1Ulthus, ranging from 8-39 em fork length were sampled from the Heuningnes River Estuary. The length-weight relationship was linear and there was no fluctuation in the modal size range throughout the year. Steenbras up to the age of six years and over inhabited the estuary, adapting to large salinity fluctuations. Abundance of food items, mainly Crustacea and Annelida, and virtual absence of predators made the estuary an ideal nursery ground. Ectoparasitic infestation by leeches and copepods was moderately intense without causing any apparent deleterious effects. In a series of experiments designed to study osmoregulation in steenbras, it was found that haema tocrits from fish sampled after 48 hours in freshwater were significantly (p<O,01) higher than the seawater controls. Two of the five protein fractions, however, as well as total protein, chloride, sodium, potassium and osmolality were all significantly (p<O,Ol) decreased in freshwater. Steenbras were unable to survive more than one week in freshwater. Due to capture diuresis the plasma con stituents from a freshly captured sample were all significantly (p<O,Ol) higher when compared to steenbras acclimated for 48 hours in seawater. Gonads from the entire estuarine sample were all infantile, virtually impossible to sex and showed . ) no macroscopic signs of development. Histology of a representative sample showed them to be all 0 1 hermaphroditic, with mainly testicular-dominant ovotestes. -
The Living Planet Index (Lpi) for Migratory Freshwater Fish Technical Report
THE LIVING PLANET INDEX (LPI) FOR MIGRATORY FRESHWATER FISH LIVING PLANET INDEX TECHNICAL1 REPORT LIVING PLANET INDEXTECHNICAL REPORT ACKNOWLEDGEMENTS We are very grateful to a number of individuals and organisations who have worked with the LPD and/or shared their data. A full list of all partners and collaborators can be found on the LPI website. 2 INDEX TABLE OF CONTENTS Stefanie Deinet1, Kate Scott-Gatty1, Hannah Rotton1, PREFERRED CITATION 2 1 1 Deinet, S., Scott-Gatty, K., Rotton, H., Twardek, W. M., William M. Twardek , Valentina Marconi , Louise McRae , 5 GLOSSARY Lee J. Baumgartner3, Kerry Brink4, Julie E. Claussen5, Marconi, V., McRae, L., Baumgartner, L. J., Brink, K., Steven J. Cooke2, William Darwall6, Britas Klemens Claussen, J. E., Cooke, S. J., Darwall, W., Eriksson, B. K., Garcia Eriksson7, Carlos Garcia de Leaniz8, Zeb Hogan9, Joshua de Leaniz, C., Hogan, Z., Royte, J., Silva, L. G. M., Thieme, 6 SUMMARY 10 11, 12 13 M. L., Tickner, D., Waldman, J., Wanningen, H., Weyl, O. L. Royte , Luiz G. M. Silva , Michele L. Thieme , David Tickner14, John Waldman15, 16, Herman Wanningen4, Olaf F., Berkhuysen, A. (2020) The Living Planet Index (LPI) for 8 INTRODUCTION L. F. Weyl17, 18 , and Arjan Berkhuysen4 migratory freshwater fish - Technical Report. World Fish Migration Foundation, The Netherlands. 1 Indicators & Assessments Unit, Institute of Zoology, Zoological Society 11 RESULTS AND DISCUSSION of London, United Kingdom Edited by Mark van Heukelum 11 Data set 2 Fish Ecology and Conservation Physiology Laboratory, Department of Design Shapeshifter.nl Biology and Institute of Environmental Science, Carleton University, Drawings Jeroen Helmer 12 Global trend Ottawa, ON, Canada 15 Tropical and temperate zones 3 Institute for Land, Water and Society, Charles Sturt University, Albury, Photography We gratefully acknowledge all of the 17 Regions New South Wales, Australia photographers who gave us permission 20 Migration categories 4 World Fish Migration Foundation, The Netherlands to use their photographic material. -
Pcr-Based Dgge Identification of Bacteria and Yeasts
ESTABLISHMENT OF A GENETIC DATABASE AND MOLECULAR METHODS FOR THE IDENTIFICATION OF FISH SPECIES AVAILBLE ON THE SOUTH AFRICAN MARKET DONNA-MAREÈ CAWTHORN Dissertation presented for the degree of DOCTOR OF PHILOSOPHY (FOOD SCIENCE) in the Faculty of AgriSciences at Stellenbosch University Promotor: Prof. R.C. Witthuhn Co-promotor: Dr. H.A. Steinman December 2011 Stellenbosch University http://scholar.sun.ac.za ii DECLARATION By submitting this dissertation electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the sole author thereof (save to the extent explicitly otherwise stated), that reproduction and publication thereof by Stellenbosch University will not infringe any third party rights and that I have not previously in its entirety or in part submitted it for obtaining any qualification. 08 November 2011 _________________________ ___________________ Donna-Mareè Cawthorn Date Copyright © 2011 Stellenbosch University All rights reserved Stellenbosch University http://scholar.sun.ac.za iii ABSTRACT Consumers have the right to accurate information on the fish products they purchase to enable them to make educated seafood selections that will not endanger their own wellbeing or the wellbeing of the environment. Unfortunately, marine resource scarcity, financial incentives and inadequate or poorly enforced regulations have all promoted the mislabelling of fish species on global markets, the results of which may hold economic, conservation and health consequences. The primary aims of this study were to determine the most commonly available fish species on the South African market, to establish and compare DNA-based methods for the unambiguous identification of these species and to utilise the most applicable methods to evaluate the extent of mislabelling on the local fisheries market. -
Tides and Moon Drive Fish Movements in a Brackish Lagoon T ∗ Marco Milardi , Mattia Lanzoni, Anna Gavioli, Elisa Anna Fano, Giuseppe Castaldelli
Estuarine, Coastal and Shelf Science 215 (2018) 207–214 Contents lists available at ScienceDirect Estuarine, Coastal and Shelf Science journal homepage: www.elsevier.com/locate/ecss Tides and moon drive fish movements in a brackish lagoon T ∗ Marco Milardi , Mattia Lanzoni, Anna Gavioli, Elisa Anna Fano, Giuseppe Castaldelli Department of Life Sciences and Biotechnology, University of Ferrara, Via Luigi Borsari 46, Ferrara, 44121, Italy ARTICLE INFO ABSTRACT Keywords: Brackish lagoons, on the edge between marine and freshwater ecosystems, are vulnerable aquatic environments Moon that act as nursery grounds for several of the most commercially exploited fish families. We used long-term Tide passive gear data, to investigate whether the moon and tides affected fish movement between inner and outer Shallow lagoon habitats in a Northern Mediterranean coastal lagoon. In particular, we used multivariate, threshold and non- Juvenile fishes linear correlation analyses to explore the relationship between fish catches and moon and tide variables in Movement transitional habitats, accounting for the presence of potential prey and other major temporal and environmental Grey shrimp variables. Fish movements between habitats were influenced by moon and tide factors, which had effects comparable to annual and seasonal variations, respectively. Overall, the magnitude of effects related to the moon parameters were smaller than most environmental parameters examined, but still larger than e.g. the presence of invertebrate prey (lagoon shrimp) or some of the tide factors. European flounder catches were positively cor- related with disk illumination, while sand and black goby were influenced by the moon phase. Other benthic and pelagic species showed no significant correlation. -
DNA Barcoding Reveals a High Incidence of Fish Species
Food Research International 46 (2012) 30–40 Contents lists available at SciVerse ScienceDirect Food Research International journal homepage: www.elsevier.com/locate/foodres DNA barcoding reveals a high incidence of fish species misrepresentation and substitution on the South African market Donna-Mareè Cawthorn a,⁎, Harris Andrew Steinman b, R. Corli Witthuhn a a Department of Food Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa b Food & Allergy Consulting & Testing Services (F.A.C.T.S), P.O. Box 565, Milnerton, 7435, South Africa article info abstract Article history: The mislabelling of fishery products has emerged as a serious problem on global markets, raising the need for Received 11 April 2011 the development of analytical tools for species authentication. DNA barcoding, based on the sequencing of a Accepted 8 November 2011 standardised region of the cytochrome c oxidase I (COI) gene, has received considerable attention as an ac- curate and broadly applicable tool for animal species identifications. The aim of this study was to investigate Keywords: the utility of DNA barcoding for the identification of a variety of commercial fish in South Africa and, in so DNA barcoding doing, to estimate the prevalence of species substitution and fraud prevailing on this market. A ca. 650 Fish species fi Identification base pair (bp) region of the COI gene was sequenced from 248 sh samples collected from seafood whole- Mislabelling salers and retail outlets in South Africa, following which species identifications were made in the Barcode Species authentication of Life Database (BOLD) and in GenBank. DNA barcoding was able to provide unambiguous species-level identifications for 235 of 248 (95%) samples analysed. -
The Use of Fish Species in a Marine Conservation Plan for Kwazulu-Natal
31/03/2011 The use of fish species in a marine conservation plan for KwaZulu-Natal. The use of fish species in a marine conservation plan for KwaZulu-Natal By Philip Haupt Submitted in partial fulfillment of the requirements for the degree of MSc in the Faculty of Science at the Nelson Mandela Metropolitan University. 31 March 2011 Supervisor: Dr A.T. Lombard Co-supervisors: Dr P.S. Goodman, Dr K. Sink Specialist advisors: Mr B. Q. Mann, Dr E. Lagabrielle, Dr J. Harris Philip Haupt, MSc thesis, Nelson Mandela Metropolitan University 31/03/2011 The use of fish species in a marine conservation plan for KwaZulu-Natal. Table of contents Summary..….…………….………….…………….…………….………….……………. Pages i-ii General Introduction The use of fish species in a marine conservation plan for KwaZulu-Natal. ….………….……1 Chapter One Selecting Fish Species for Marine Conservation planning…………….…………….…………16 Chapter Two Spatial and temporal resolution of marine fish data in KwaZulu-Natal…………….…………53 Chapter Three Modelling seasonal species life cycle envelopes for marine fish in KwaZulu-Natal…………93 Chapter Four Spatio-temporal marine conservation planning for fish species in KwaZulu-Natal…………128 General Conclusions……………………………………………………………….……………169 Overall acknowledgements……………………………………………………….……………176 Appendices (follows Overall acknowledgements) Appendix 1…………………………………………………………….………………….Pages 1-19 Appendix 2…………………………………………….…………………………….…….Pages 1-3 Appendix 3……………………………………………………...………………………….Pages 1-2 Appendix 4………………………………………………………………...……………….Pages 1-2 Appendix 5………………………………………………………………...……………….Pages -
By Species Items
415 Fish, crustaceans, molluscs, etc Capture production by species items Atlantic, Southeast C-47 Poissons, crustacés, mollusques, etc Captures par catégories d'espèces Atlantique, sud-est (a) Peces, crustáceos, moluscos, etc Capturas por categorías de especies Atlántico, sudoriental English name Scientific name Species group Nom anglais Nom scientifique Groupe d'espèces 1995 1996 1997 1998 1999 2000 2001 Nombre inglés Nombre científico Grupo de especies mt mt mt mt mt mt mt West coast sole Austroglossus microlepis 31 463 409 517 393 463 571 589 Mud sole Austroglossus pectoralis 31 769 909 837 859 768 800 844 Southeast Atlantic soles nei Austroglossus spp 31 1 365 480 1 197 773 926 965 650 Tonguefishes Cynoglossidae 31 4 3 - - - - 10 Flatfishes nei Pleuronectiformes 31 229 195 120 935 912 592 1 928 Shallow-water Cape hake Merluccius capensis 32 26 832 777 906 2 060 658 1 863 Cape hakes Merluccius capensis,M.paradox. 32 277 186 286 443 260 955 306 269 309 954 300 743 323 257 Gadiformes nei Gadiformes 32 - - - 3 - - - Bonefish Albula vulpes 33 - 154 - - - - - Sea catfishes nei Ariidae 33 21 19 76 132 102 459 2 435 Mullets nei Mugilidae 33 1 259 1 086 972 908 757 561 125 Groupers nei Epinephelus spp 33 32 48 41 59 33 17 18 Groupers, seabasses nei Serranidae 33 235 1 002 460 1 417 347 2 341 4 229 Bigeyes nei Priacanthus spp 33 3 1 1 3 7 2 1 Snappers, jobfishes nei Lutjanidae 33 - - - - - - 1 Bigeye grunt Brachydeuterus auritus 33 124 146 228 262 167 191 1 181 Grunts, sweetlips nei Haemulidae (=Pomadasyidae) 33 149 1 031 557 440 412 817 1 715 Canary drum (=Baardman) Umbrina canariensis 33 .. -
By Species Items
1 Fish, crustaceans, molluscs, etc Capture production by species items Atlantic, Southeast C-47 Poissons, crustacés, mollusques, etc Captures par catégories d'espèces Atlantique, sud-est (a) Peces, crustáceos, moluscos, etc Capturas por categorías de especies Atlántico, sudoriental English name Scientific name Species group Nom anglais Nom scientifique Groupe d'espèces 1998 1999 2000 2001 2002 2003 2004 Nombre inglés Nombre científico Grupo de especies t t t t t t t West coast sole Austroglossus microlepis 31 393 463 571 589 644 746 8 801 Mud sole Austroglossus pectoralis 31 859 768 800 844 702 754 612 Southeast Atlantic soles nei Austroglossus spp 31 773 926 965 650 492 375 493 Tonguefishes Cynoglossidae 31 - - - 10 17 28 42 Flatfishes nei Pleuronectiformes 31 935 912 592 1 928 3 465 3 069 2 636 Benguela hake Merluccius polli 32 - - - - 1 - - Shallow-water Cape hake Merluccius capensis 32 906 2 060 658 1 863 3 225 1 457 1 799 Cape hakes Merluccius capensis,M.paradox. 32 302 542 307 642 309 337 323 073 306 387 336 887 330 722 Gadiformes nei Gadiformes 32 3 - - - - - - Sea catfishes nei Ariidae 33 132 102 459 2 435 3 616 3 198 3 624 Mullets nei Mugilidae 33 908 757 561 125 122 159 127 Dusky grouper Epinephelus marginatus 33 - - - - - 41 - White grouper Epinephelus aeneus 33 - - - - - 25 - Groupers nei Epinephelus spp 33 59 33 17 18 14 7 20 Groupers, seabasses nei Serranidae 33 1 417 347 2 341 4 229 5 781 4 517 5 426 Bigeyes nei Priacanthus spp 33 3 7 2 1 2 1 1 Snappers, jobfishes nei Lutjanidae 33 - - - 1 1 0 0 Bigeye grunt Brachydeuterus auritus 33 262 167 191 1 181 4 639 4 120 3 484 Grunts, sweetlips nei Haemulidae (=Pomadasyidae) 33 440 412 817 1 715 3 514 1 905 2 142 Canary drum (=Baardman) Umbrina canariensis 33 .. -
Taxonomy and Life History of the Zebra Seabream, Diplodus Cervinus (Perciformes: Sparidae), in Southern Angola
TAXONOMY AND LIFE HISTORY OF THE ZEBRA SEABREAM, DIPLODUS CERVINUS (PERCIFORMES: SPARIDAE), IN SOUTHERN ANGOLA A thesis submitted in the fulfilment of the requirement for the degree of MASTER OF SCIENCE of RHODES UNVERSITY by Alexander Claus Winkler June 2013 ABSTRACT The zebra sea bream, Diplodus cervinus (Sparidae) is an inshore fish comprised of two boreal subspecies from the Gulf of Oman and the Mediterranean / north eastern Atlantic and one austral subspecies from South Africa and southern Angola. The assumption of a single austral subspecies has, however, been questioned due to mounting molecular and morphological evidence suggesting that the cool Benguela current is a vicariant barrier that has separated many synonymous inshore fish species between South Africa and southern Angola. The aims of this thesis are to conduct a comparative morphological analysis of Diplodus cervinus in southern Angola and South Africa in order to classify the southern Angolan population and then to conduct a life history assessment to assess the life history impact of allopatry on this species between the two regions. Results of the morphological findings of the present study (ANOSIM, p < 0.05, Rmeristic = 0.42) and (Rmorphometric = 0.30) along with a concurrent molecular study (FST = 0.4 – 0.6), identified significant divergence between specimens from South Africa (n = 25) and southern Angola (n = 37) and supported stock separation and possibly sub-speciation, depending on the classification criteria utilised. While samples from the two boreal subspecies were not available for the comparative morphological or molecular analysis, comparisons of the colouration patterns between the three subspecies, suggested similarity between the southern Angola and the northern Atlantic / Mediterranean populations. -
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