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  • 1
    Online Resource
    Online Resource
    Newark :John Wiley & Sons, Incorporated,
    Keywords: Estuarine fishes -- Tropics. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (386 pages)
    Edition: 1st ed.
    ISBN: 9780470694879
    Series Statement: Fish and Aquatic Resources Series
    DDC: 597.177/86/0913
    Language: English
    Note: Tropical Estuarine Fishes Ecology, Exploitation and Conservation -- Contents -- Series Foreword -- Preface and Acknowledgements -- 1 Scope and Definitions -- 1.1 Introduction -- 1.2 Defining and classifying estuaries -- 1.3 Tropical and subtropical estuaries -- 1.4 Ecology -- 1.5 Exploitation -- 1.6 Conservation -- 2 The Diversity of Tropical Estuaries -- 2.1 Introduction -- 2.2 Open estuaries -- 2.2.1 Regional examples -- East Africa -- West Africa -- Asia -- Australasia -- South America -- Central America -- Gulf of Mexico -- 2.3 Estuarine coastal waters -- 2.3.1 Regional examples -- Gulf of Carpentaria, Australia -- Bay of Bengal -- San Miguel Bay, Philippines -- Gulf of Mexico -- West Africa -- 2.4 Blind estuaries -- 2.4.1 Regional examples -- East Africa -- West Africa -- India -- Southeast Asia -- 2.5 Coastal lakes -- 2.5.1 Regional examples -- East Africa -- West Africa -- India -- South America -- Gulf of Mexico -- 2.6 Physical factors influencing the nature of tropical estuaries -- 2.7 Catastrophic events -- 3 Fish Faunas and Communities -- 3.1 Numbers of species and classification -- 3.2 The diversity and pattern of life cycles -- 3.2.1 Estuarine species -- Subtropics -- Tropics -- 3.2.2 Marine migrants -- 3.2.3 Anadromous species -- 3.2.4 Freshwater migrants -- 3.3 Species assemblages -- 3.3.1 Indo-West Pacific -- East Africa -- South Asia -- Southeast Asia -- Australasia -- Estuarine coastal waters of the Indo-West Pacific -- 3.3.2 Tropical East Atlantic -- Ebrie Lagoon, Ivory Coast -- Lagos Lagoon, Nigeria -- Fatala estuary, Guinea -- Comparisons with the east African coast -- Estuarine coastal waters of the Tropical East Atlantic -- 3.3.3 Tropical West Atlantic -- Guaratuba Bay, Brazil -- Tortuguero estuary, Costa Rica -- Sinnamary estuary, French Guiana -- Orinoco system, Venezuela -- Estuarine coastal waters. , Terminos Lagoon and Campeche Sound, Gulf of Mexico -- Laguna Madre, Texas, USA -- Mississippi delta region, USA -- 3.3.4 Tropical East Pacific -- Rio Claro, Costa Rica -- The coastal lakes of Guerrero State, Mexico -- Jiquilisco Bay, El Salvador -- 3.4 Zoogeographic comparisons -- 4 Trophic Ecology -- 4.1 Introduction -- 4.2 Feeding specialisation or flexibility? -- 4.2.1 Gerreidae -- 4.2.2 Mugilidae -- 4.2.3 Ariidae -- 4.2.4 Sciaenidae -- 4.2.5 Eleotridae -- 4.2.6 Lepidophagy -- 4.3 Ontogenetic changes in diets -- 4.3.1 Sciaenops ocellutus -- 4.3.2 Lates calcarifer -- 4.3.3 Mugilidae -- 4.3.4 Toxotidae -- 4.3.5 Rhabdosurgus holubi -- 4.4 Trophic levels among estuarine fishes -- 4.4.1 Herbivorous fishes -- Partial herbivores -- Herbivorous for part of life history -- Obtaining most of nutrition from plants -- 4.4.2 Iliophagous fishes -- 4.4.3 Meiofauna feeders -- 4.4.4 Macrobenthos feeders -- 4.4.5 Plankton feeders -- 4.4.6 Piscivorous species -- 4.5 Foodwebs -- 4.5.1 Food webs in different types of estuaries -- 4.5.2 Effects of natural and anthropogenic perturbations on food webs -- 5 Reproductive Strategies -- 5.1 Introduction -- 5.2 Sexual allocation -- 5.2.1 Single sex or hermaphrodite? -- 5.3 Spawning strategies -- 5.3.1 Methods of spawning -- 5.3.2 Spawning stimuli -- Seasonal stimuli -- Proximal stimuli -- 5.3.3 Spawning sites and behaviour -- 5.3.4 Spawning in highly variable or extreme environments -- 5.4 Reproductive characteristics of major taxa -- 5.4.1 Elopiformes -- 5.4.2 Clupeiformes -- Clupeidae -- Engraulididae -- 5.4.3 Ariidae -- 5.4.4 Mugilidae -- 5.4.5 Polynemidae -- 5.4.6 Haemulidae -- 5.4.7 Carangidae -- 5.4.8 Gobiidae -- 5.4.9 Chondrichthys -- 5.5 Ecology of larval fish -- 5.5.1 Composition, diversity and density of ichthyoplankton assemblages -- 5.5.2 Factors affecting recruitment and distribution of larvae. , 6 Effects of Structure and Hydrology -- 6.1 Introduction -- 6.2 Structure -- 6.2.1 Vegetation -- Mangroves -- Seagrasses -- Reed beds -- Swamp forests -- 6.2.2 Substrata -- 6.3 Salinity -- 6.4 Turbidity -- 6.4.1 Distribution in relation to turbidity -- 6.4.2 The significance of turbidity -- 6.5 Water movements -- 6.5.1 Currents and tidal influences -- 6.5.2 Wave action and turbulence -- 6.6 How important are the various structural and hydrological factors? -- 7 Mangroves and Estuarine Dependence -- 7.1 Introduction -- 7.2 The validity of the concept of estuarine dependence -- 7.3 Geographical distribution and evolution -- 7.4 Advantages and disadvantages of an estuarine phase in the life cycle -- 7.4.1 Costs and benefits -- 7.4.2 Predation -- 7.4.3 Food supply -- 7.4.4 Shelter -- 7.5 Estuarine dependency and fisheries production -- 8 Estuarine Fisheries -- 8.1 Introduction -- 8.2 Production and productivity -- 8.3 Problems and issues in tropical estuarine fisheries -- 8.4 Types of fisheries -- 8.4.1 Asian fisheries -- The Hilsa fishery, South Asia -- The Lake Chilka fishery, India -- The Pichavaram fishery, India -- The Larut-Matang fishery, Malaysia -- 8.4.2 African fisheries -- The Kosi fishery, South Africa -- The Ebrie Lagoon fishery, Ivory Coast -- 8.4.3 South and Central American fisheries -- The Gulf of Nicoya fishery, Costa Rica -- The Cienaga Grande de Santa Marta fishery, Colombia -- The fisheries of Lake Maracaibo, Venezuela -- The Valenca Delta fishery, Brazil -- 8.4.4 Australasian fisheries -- The Barramundi fisheries of Australia and Papua New Guinea -- 8.5 Management -- 8.5.1 Definitions and goals -- 8.5.2 The developing-country situation -- 8.5.3 Community based management -- Asia -- Africa -- Relationships with aquaculture -- 8.5.4 Resource allocation -- 8.5.5 Integrated management -- 9 Effects of Fishing -- 9.1 Introduction. , 9.2 Effects of catching fish -- 9.2.1 Effects on the target species -- Southeast Asia -- West Africa -- 9.2.2 Effects on non-target species -- Southeast Asia -- The Gulf of Carpentaria -- Indian coastal waters -- Southeast Africa -- Australian estuaries -- Effects on charismatic fauna -- 9.2.3 Effects of fish removal on nursery functions -- West Africa -- Southeast Africa -- 9.2.4 Effects of removal of species on trophic structure -- West Africa -- 9.3. Effects of habitat alteration caused by fishing -- 9.3.1. Effects on nursery function by removal or alteration of habitats -- West Africa -- 9.3.2. Effects of reductions in water quality caused by fishing -- 9.4 Extinctions -- 9.5 Solutions? -- 10 Effects of Industry and Agriculture -- 10.1 Introduction -- 10.2 Physical changes -- 10.2.1 Effects of dams and weirs -- Obstruction -- Freshwater retention and changes in flow patterns -- 10.2.2 Dredging -- 10.2.3 Mangrove loss -- 10.2.4 Effects of residential canal estates and marinas -- 10.3 Industrial and agricultural effluents -- 10.3.1 Persistent organochlorines -- 10.3.2 Oil and hydrocarbons -- 10.3.3 Trace metals -- 10.3.4 Sewage -- 10.4 Effects of large-scale agriculture -- 10.4.1 Sugar cane -- Effects of sugar cane farming -- Effects of discharges from sugar cane mills -- 10.4.2 Oil palm plantations -- 10.5 Mass mortality of fishes -- 10.5.1 Naturally occurring phenomena -- 10.5.2 Anthropogenic sources of mortality -- 11 Conservation, Rehabilitation and Climate Change -- 11.1 Introduction -- 11.2 Threats, costs and benefits -- Dilemmas -- Benefits -- 11.2.1 What is being conserved? -- 11.2.2 Conservation management -- Protected areas -- Indicators -- 11.2.3 Man as part of the ecosystem -- 11.3 Rehabilitation and restoration -- 11.4 Climate change and sea level rise -- References -- Taronomic Index -- Geographic Index -- Subject Index.
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  • 2
    Online Resource
    Online Resource
    Newark :John Wiley & Sons, Incorporated,
    Keywords: Estuarine fishes. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (1107 pages)
    Edition: 1st ed.
    ISBN: 9781119705352
    DDC: 338.3727
    Language: English
    Note: Intro -- Volume I -- Title Page -- Copyright Page -- Contents -- List of Contributors -- Preface -- Acknowledgements -- Chapter 1 Introduction -- 1.1 Scope of the book -- 1.2 Reasons why this synthesis is important -- 1.3 Estuary definition and types -- 1.4 Chapter descriptions -- 1.5 Conclusions -- 1.6 References -- Chapter 2 Fish Assemblages and Functional Groups -- 2.1 Introduction -- 2.2 Zoogeography, salinity and estuarine fish assemblages -- 2.3 Estuarine typology and fish assemblages -- 2.4 Fish guilds and functional groups -- 2.4.1 Estuarine Use Functional Group (EUFG) -- 2.4.2 Feeding Mode Functional Group (FMFG) -- 2.4.3 Reproductive Mode Functional Group (RMFG) -- 2.5 Do functional groups drive fish assemblage structure? -- 2.6 Fish functional groups and guild analyses -- 2.7 Acknowledgements -- 2.8 References -- Chapter 3 Reproduction, Ontogeny and Recruitment -- 3.1 Introduction -- 3.1.1 Scope of the chapter -- 3.2 Estuarine support of reproduction and recruitment -- 3.2.1 Replenishment: modes and patterns -- 3.2.1.1 Modes of reproduction -- 3.2.1.2 Early-lifestages and nurseries -- 3.2.2 Sources of variability in reproductive success and recruitment -- 3.2.2.1 Habitat and water quality -- 3.2.2.2 Hydrography and physics -- 3.2.2.3 Foods of early-lifestages -- 3.2.2.4 Predators -- 3.2.2.5 Weather, climate and estuarine change -- 3.3 Early-life stages and recruitment dynamics -- 3.3.1 Dispersal, transport and retention -- 3.3.1.1 Offshore to estuary transport processes -- 3.3.1.2 Swimming as a transport mechanism -- 3.3.1.3 Near-and within-estuarytransport processes -- 3.3.1.4 Retention: estuarine features and processes -- 3.3.2 Settlement -- 3.3.3 Larval and juvenile production processes -- 3.3.3.1 Larval feeding -- 3.3.4 Larval and juvenile production: growth and mortality -- 3.3.4.1 Rates and variability -- 3.3.4.2 Predation. , 3.3.4.3 Environmental factors -- 3.4 Adults and recruitment -- 3.4.1 Adult stock -- 3.4.1.1 Stock structure, contingents and cohorts -- 3.4.1.2 Maternal effects -- 3.4.2 Scales and patterns of variability in reproductive success -- 3.4.2.1 Recruitment levels and variability -- 3.4.2.2 Adult stock and recruitment -- 3.4.2.3 Predicting and forecasting recruitment -- 3.4.3 Recruitment: an integrated, evolved process -- 3.5 Threats to reproduction and recruitment in estuaries -- 3.5.1 Excessive fishing: depletion of adults and by-catch of juveniles -- 3.5.2 Habitat destruction and degradation -- 3.5.3 Impoundments and flow regulation -- 3.5.4 Power plants -- 3.5.5 Estuary contaminants: water quality degradation -- 3.5.6 Eutrophication -- 3.5.7 Climate change -- 3.5.8 Catastrophic events -- 3.6 Case studies -- 3.6.1 Pleuronectiformes -- 3.6.2 Sciaenidae -- 3.6.3 Anchoa mitchilli (Engraulidae) -- 3.6.4 Brevoortia tyrannus and Brevoortia spp. (Clupeidae) -- 3.6.5 Morone saxatilis (Moronidae) -- 3.6.6 Gadidae and Clupeidae (Baltic Sea) -- 3.6.7 Lateolabrax japonicus (Lateolabracidae) -- 3.6.8 Fundulus heteroclitus (Fundulidae) -- 3.7 Summary and conclusions -- 3.8 Acknowledgements -- 3.9 References -- Chapter 4 Habitat Use and Connectivity -- 4.1 Introduction -- 4.2 Habitat diversity -- 4.2.1 Water column habitat -- 4.2.2 Unstructured shallow habitats -- 4.2.3 Structured benthic habitats -- 4.2.3.1 Salt marshes -- 4.2.3.2 Submerged aquatic vegetation -- 4.2.3.3 Mangroves -- 4.2.3.4 Shellfish beds -- 4.2.3.5 Woody debris -- 4.2.3.6 Rocky and gravel bottoms -- 4.3 Geomorphological and hydrological variables -- 4.4 Physico-chemical variables -- 4.5 Dynamics of juvenile habitat use -- 4.5.1 Temperature effects -- 4.5.2 Salinity effects -- 4.5.3 Settlement habitats -- 4.5.4 Connectivity among estuarine habitats -- 4.5.5 Alien species -- 4.6 Adult habitat use. , 4.7 Habitat fidelity by juveniles and adult fishes -- 4.8 Ecological context -- 4.9 Connectivity between estuarine, freshwater and marine ecosystems -- 4.9.1 Migrations into estuaries -- 4.9.2 Migrations out of estuaries -- 4.9.3 Migrations between estuaries -- 4.10 Conclusions -- 4.11 Acknowledgements -- 4.12 References -- Chapter 5 Feeding Ecology and Trophic Dynamics -- 5.1 Introduction -- 5.2 Fish foraging behaviour and food intake -- 5.2.1 Prey detection -- 5.2.2 Feeding periodicity -- 5.2.3 Food intake -- 5.2.4 Feeding movements and migrations -- 5.3 Factors influencing feeding ecology -- 5.3.1 Environmental factors -- 5.3.1.1 Water temperature, salinity and dissolved oxygen -- 5.3.1.2 Tidal regime and substratum composition -- 5.3.2 Biological factors -- 5.3.2.1 Body size -- 5.3.2.2 Ontogenetic changes in fish diets -- 5.3.3 Foraging specialisations -- 5.3.4 Opportunistic versus specialised feeding -- 5.4 Ecotrophomorphology -- 5.5 Trophic categorization -- 5.5.1 Herbivorous species -- 5.5.2 Detritivorous species -- 5.5.3 Zoobenthivorous species -- 5.5.4 Zooplankivorous species -- 5.5.5 Piscivorous species -- 5.5.5.1 Cannibalism -- 5.6 Competition, resource partitioning, energy flow and connectivity -- 5.6.1 Intra-specific and inter-specific competition -- 5.6.2 Resource partitioning -- 5.6.3 Energy flow and connectivity -- 5.7 FishBase approach to Functional Feeding Groups -- 5.7.1 Example of an FFG analysis -- 5.8 Fish food sources in estuaries -- 5.8.1 Submerged macrophyte habitats -- 5.8.2 Emergent macrophyte habitats -- 5.9 Food web complexity -- 5.9.1 Vertical and horizontal feeding patterns by fishes -- 5.10 Predators of fish in estuaries -- 5.10.1 Invertebrates -- 5.10.2 Birds -- 5.10.3 Reptiles -- 5.10.4 Mammals -- 5.11 Effects of natural and anthropogenic perturbations on food webs -- 5.12 Acknowledgements -- 5.13 References. , Chapter 6 Fishes and Estuarine Environmental Health -- 6.1 Estuarine environmental health: concepts, definitions and assessment -- 6.2 Anthropogenic pressures impacting estuarine fish assemblages -- 6.2.1 Habitat loss and physical degradation -- 6.2.2 Pollution -- 6.2.3 River flow regulation -- 6.2.4 Fisheries and aquaculture -- 6.2.5 Non-indigenous species -- 6.2.6 Climate change -- 6.2.7 Integration of human pressures: the global change context -- 6.3 Fish biomarkers responding to human pressures -- 6.3.1 Bioaccumulation and biomagnification -- 6.3.2 Biomarkers of exposure -- 6.4 Fishes as biological indicators -- 6.5 Main methodological approaches to assess estuarine health using fish as indicators -- 6.5.1 Historical data and reference conditions -- 6.5.2 Experimental approaches -- 6.5.3 Environmental impact assessment and other risk assessment methods -- 6.5.4 Qualitative methods -- 6.5.5 Quantitative indicators -- 6.5.6 Models -- 6.6 Environmental health fish-based indices -- 6.7 Disentangling fish responses in the multi-stress context of global changes -- 6.7.1 Univariate approaches -- 6.7.2 Multivariate approaches -- 6.8 Future research directions -- 6.9 References -- Chapter 7 Climate Change and Fishes in Estuaries -- 7.1 Introduction -- 7.2 Global, regional and local patterns -- 7.2.1 Predictors of fish taxonomic diversity at global and regional scales -- 7.2.2 Predictors of fish taxonomic diversity at local scales -- 7.2.3 Predictors of fish functional diversity at global, regional and local scales -- 7.3 Potential impacts of environmental/climate stressors on estuarine fish -- 7.3.1 Salinity and freshwater flow impacts -- 7.3.2 Temperature impacts -- 7.3.3 Dissolved oxygen impacts -- 7.3.4 Impacts of elevated CO2 -- 7.3.5 Sea level rise -- 7.3.6 Estuary entrance channel openings and fish access -- 7.3.7 Disease. , 7.4 Climate change and fisheries in estuaries -- 7.4.1 Links to fisheries catches -- 7.4.2 Socio-economic effects and management implications -- 7.5 Case studies -- 7.5.1 Arctic -- 7.5.2 Temperate northern Atlantic -- 7.5.3 Temperate northern Pacific -- 7.5.4 Tropical Atlantic -- 7.5.5 Indo-Pacific -- 7.5.6 Temperate South America -- 7.5.7 Temperate southern Africa -- 7.5.8 Temperate Australia -- 7.6 Gaps in knowledge and future research directions -- 7.7 Acknowledgements -- 7.8 References -- Chapter 8 Estuarine Degradation and Rehabilitation -- 8.1 Introduction -- 8.1.1 Hazards and risks to estuarine fish and fisheries and their habitats -- 8.1.2 Effects of climate change on estuarine fish and fisheries -- 8.1.3 Effects of estuarine degradation on ecosystem services -- 8.1.4 Effects of estuarine degradation on water quality and impacts on fish -- 8.1.5 Heavy metals -- 8.1.6 Organic pollutants -- 8.1.7 Pharmaceutical and personal care products -- 8.1.8 Nutrients -- 8.1.9 Effects on water quantity, hydropeak and flow alteration on fish -- 8.1.10 Effects of fishing -- 8.2 Estuarine restoration and habitat creation -- 8.3 Current practices -- 8.4 Ecological engineering -- 8.5 Contribution of modelling tools to more process-based restoration objectives -- 8.5.1 Introduction -- 8.5.2 Framework -- 8.5.2.1 Towards a more process-orientedapproach -- 8.5.2.2 Towards integrated objectives -- 8.6 Why modelling processes? -- 8.6.1 Physical phenomena -- 8.6.2 Species use of the estuarine environment and compartmental interactions -- 8.6.3 Overview -- 8.7 Modelling tools -- 8.7.1 Biogeochemical modelling -- 8.7.2 Hydromorphological sedimentary modelling -- 8.7.2.1 Modelling vegetation-sediment interactions -- 8.7.2.2 Modelling formation and dynamics of tidal channels -- 8.7.2.3 Modelling biological impacts on sedimentary dynamics -- 8.8 Life-cycle modelling. , 8.8.1 'Static' approaches: statistical habitat suitability.
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  • 3
    Online Resource
    Online Resource
    Milton :Taylor & Francis Group,
    Keywords: Gray mullets. ; Electronic books.
    Description / Table of Contents: Mullets (grey mullets) are a family (Mugilidae) and order of ray-finned fish found in temperate and tropical waters worldwide. There are approximately 80 species of mullet; these fish have been considered an important food source in Mediterranean Europe since Roman times. This book provides a long overdue update on the biology and ecology of mullets and features comprehensive coverage of the key features of the Mugilidae family, such as recent DNA evidence and morphological data that challenge the traditional taxonomy.
    Type of Medium: Online Resource
    Pages: 1 online resource (534 pages)
    Edition: 1st ed.
    ISBN: 9781482252132
    DDC: 597/.7
    Language: English
    Note: Front Cover -- Preface -- Acknowledgements -- Contents -- Chapter 1: Morphology and Morphometry Based Taxonomy of Mugilidae -- Chapter 2: Implications of Molecular Phylogeny for the Taxonomy of Mugilidae -- Chapter 3: Biogeography and Distribution of Mugilidae in the Americas -- Chapter 4: The Biogeography of Mugilidae in India, South-East and East Asia -- Chapter 5: Biogeography and Distribution of Mugilidae in Australia and Oceania -- Chapter 6: Biogeography and Distribution of Mugilidae in the Western, Central and Southern Regions of Africa -- Chapter 7: Biogeography and Distribution of Mugilidae in the Mediterranean and the Black Sea, and North-East Atlantic -- Chapter 8: Musculoskeletal Anatomy of the Flathead Grey Mullet Mugil cephalus -- Chapter 9: Food and Feeding of Mugilidae -- Chapter 10: Age and Growth of Mugilidae -- Chapter 11: Sexuality and Reproduction of Mugilidae -- Chapter 12: Biology and Ecology of Fry and Juveniles of Mugilidae -- Chapter 13: Adaptation to Salinity and Osmoregulation in Mugilidae -- Chapter 14: Ecological Role of Mugilidae in the Coastal Zone -- Chapter 15: Genetics of Mugilidae -- Chapter 16: Current State of Grey Mullet Fisheries and Culture -- Chapter 17: Capture Methods and Commercial Fisheries for Mugilidae -- Chapter 18: Stock Enhancement of Mugilidae in Hawaii (USA) -- Chapter 19: Capture and Culture of Mugilidae in Taiwan -- Chapter 20: Culture of Mugilidae in Egypt -- Chapter 21: Grey Mullet as Possible Indicator of Coastal Environmental Changes: the MUGIL Project -- Back Cover.
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  • 4
    Type of Medium: Book
    Pages: xxii, 1056 Seiten, Volume 1:1 - 552 Seiten, Volume 2: 553 - 1056 , Illustration
    ISBN: 9781444336672
    Language: English
    Note: 2 Volume-Set
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  • 5
    In: Volume 1
    Type of Medium: Image
    Pages: xxii, 552 Seiten
    Language: English
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  • 6
    In: Volume 2
    Type of Medium: Image
    Pages: xxii, Seite 554-1056
    Language: English
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  • 7
    Book
    Book
    Boca Raton : CRC Press, Taylor & Francis
    Keywords: Gray mullets ; Marine fishes ; Aufsatzsammlung ; Meeräschen
    Type of Medium: Book
    Pages: X, 529 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9781482252125
    DDC: 597/.7
    Language: English
    Note: Includes bibliographical references and index
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 5 (1973), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Temperature and salinity tolerances of juvenile Rhabdosargus holubi (Steindachner) were determined experimentally. Results indicated that they are tolerant over a wide range of salinities (0.7–70‰) and temperatures (10–30°C) and that little interaction between temperature and salinity occurs. R. holubi is restricted to the warm temperate waters of southeastern Africa. It is absent from the subtropical Indian Ocean and from temperate Atlantic Ocean waters. The juveniles occur mainly in the inshore waters and estuaries. Evidence from tolerance experiments and salinity and temperature data from southern African estuaries suggested that the distribution of R. holubi is controlled by temperature.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 6 (1974), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Juvenile Rhabdosargus holubi (Steindachner), one of the commonest teleosts in south east African estuaries, are strong osmoregulators, showing little change in their internal osmotic concentration over an extremely wide salinity range. In 35‰ seawater the internal osmotic concentration is held at 370 mosmol/1. At a salinity of 1‰ the internal osmotic concentration falls to 216 mosmol/1 and at a salinity of 65‰ rises to 381 mosmol/1. When exposed to a new salinity the internal osmotic concentration does not change until after 10 h; this may be of considerable importance to fish living in areas subject to short term changes of salinity.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 6 (1974), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The population structure and growth rate of Rhabdosargus holubi (Steindachner) in the closed West Kleinemond estuary in south east Africa, from 1971–973, are described. Juvenile R. holubi invade the estuary at a length of 1–2 cm but migrate back to the sea at a length of about 14 cm without attaining maturity in the estuary. Adult R. holubi are rarely encountered in estuaries. The annual growth increment of O group R. holubi was 6 cm, almost all occurring in summer. The growth of Lithognathus lithognathus (Cuvier) was also measured in the same closed estuary and O group fish of this species also grew 6 cm per annum although 1 + fish grew 8 cm per annum.
    Type of Medium: Electronic Resource
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