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Fish) of the Helford Estuary
HELFORD RIVER SURVEY A survey of the Pisces (Fish) of the Helford Estuary A Report to the Helford Voluntary Marine Conservation Area Group funded by the World Wide Fund for Nature U.K. and English Nature P A Gainey 1999 1 Summary The Helford Voluntary Marine Conservation Area (hereafter HVMCA) was designated in 1987 and since that time a series of surveys have been carried out to examine the flora and fauna present. In this study no less that eighty species of fish have been identified within the confines of the HVMCA. Many of the more common fish were found to be present in large numbers. Several species have been designated as nationally scarce whilst others are nationally rare and receive protection at varying levels. The estuary is obviously an important nursery for several species which are of economic importance. A full list of the fish species present and the protection some of them receive is given in the Appendices Nine species of fish have been recorded as new to the HVMCA. ISBN 1 901894 30 4 HVMCA Group Office Awelon, Colborne Avenue Illogan, Redruth Cornwall TR16 4EB 2 CONTENTS Summary Location Map - Fig. 1.......................................................................................................... 1 Intertidal sites - Fig. 2 ......................................................................................................... 2 Sublittoral sites - Fig. 3 ...................................................................................................... 3 Bathymetric chart - Fig. 4 ................................................................................................. -
Monogenea: Gyrodactylidae) from Syngnathus Acus (Syngnathidae) from South Africa
FOLIA ParasitologICA 57[1]: 11–15, 2010 © Institute of Parasitology, Biology Centre ASCR ISSN 0015-5683 (print), ISSN 1803-6465 (online) http://www.paru.cas.cz/folia/ Gyrodactylus eyipayipi sp. n. (Monogenea: Gyrodactylidae) from Syngnathus acus (syngnathidae) from south Africa David B. Vaughan1,5, Kevin W. Christison2,5, haakon hansen3 and Andrew P. shinn4 1 Aquatic Animal Health Research, Two Oceans Aquarium, P.O. Box 50603, Victoria & Alfred Waterfront, Cape Town, 8000, South Africa; 2 Department of Environmental Affairs and Tourism, Marine and Coastal Management, Private Bag X 2, Roggebaai, 8012, South Africa; 3 National Veterinary Institute, Section for Parasitology, P.O. Box 750 Sentrum, NO-0106, Oslo, Norway; 4 Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, Scotland, UK; 5 Department of Biodiversity and Conservation Biology, University of the Western Cape, Private Bag X 17, Bellville, 7535, South Africa Abstract: Gyrodactylus eyipayipi sp. n. is described from the skin, gills, flute and male brood pouch of captive specimens of the greater pipefishSyngnathus acus L., collected for and maintained at the Two Oceans Aquarium in Cape Town, South Africa. It is the first marineGyrodactylus species reported from the African continent. The new species is compared to the three known Gyrodactylus species affecting syngnathiform hosts (G. pisculentus Williams, Kritsky, Dunnigan, Lash et Klein, 2008, G. shorti Holliman, 1963, and G. syngnathi Appleby, 1996). Although all four species have similar-sized and shaped attachment hooks with some overlap, separation of the species is possible using marginal hook morphology. The marginal hooks of G. eyipayipi measure (mean) 30 µm in total length and are larger than those of the three other species (mean, 24–28 µm). -
Length-Weight Relationships of Marine Fish Collected from Around the British Isles
Science Series Technical Report no. 150 Length-weight relationships of marine fish collected from around the British Isles J. F. Silva, J. R. Ellis and R. A. Ayers Science Series Technical Report no. 150 Length-weight relationships of marine fish collected from around the British Isles J. F. Silva, J. R. Ellis and R. A. Ayers This report should be cited as: Silva J. F., Ellis J. R. and Ayers R. A. 2013. Length-weight relationships of marine fish collected from around the British Isles. Sci. Ser. Tech. Rep., Cefas Lowestoft, 150: 109 pp. Additional copies can be obtained from Cefas by e-mailing a request to [email protected] or downloading from the Cefas website www.cefas.defra.gov.uk. © Crown copyright, 2013 This publication (excluding the logos) may be re-used free of charge in any format or medium for research for non-commercial purposes, private study or for internal circulation within an organisation. This is subject to it being re-used accurately and not used in a misleading context. The material must be acknowledged as Crown copyright and the title of the publication specified. This publication is also available at www.cefas.defra.gov.uk For any other use of this material please apply for a Click-Use Licence for core material at www.hmso.gov.uk/copyright/licences/ core/core_licence.htm, or by writing to: HMSO’s Licensing Division St Clements House 2-16 Colegate Norwich NR3 1BQ Fax: 01603 723000 E-mail: [email protected] 3 Contents Contents 1. Introduction 5 2. -
Species Fact Sheets for the Wadden Sea Fish Strategy
Species Fact Sheets for the Wadden Sea Fish Strategy Factsheets for Wadden Sea Fish Strategy Wadden for Factsheets Overview of 19 species in the Wadden Sea sampled in the Demersal Fish Survey 1 Introduction The Demersal Fish Survey (DFS) is a beam trawl survey covering the subtidal and deeper channels of the Wadden Sea and the coastal zone Tulp et al. (2008, 2015). It has been carried out in September-October since 1970 and the largest size classes. Most size classes show This is especially relevant because it is likely that is concurrently carried out in the Fish in the Wadden Sea The current status of fish in the Wadden Sea higher densities in the mid 1980s and a decline factors outside the Wadden Sea (North Sea, coastal waters (up to 25m depth) afterwards. estuaries, rivers) determine the distribution and from the southern border of the has been analysed by the research institutes abundance of the species in the Wadden Sea Netherlands to Esbjerg, including IMARES and NIOZ in cooperation with the the Wadden Sea, the outer part Programme towards a Rich Wadden Sea This study shows that there is a lack of data on itself. of the Ems-Dollard estuary, (PRW). The results are published in the report the fish community in the Wadden Sea. Not and the Westerschelde and the “Wadden Sea Fish Haven – development only on the drivers affecting the trends, but Important habitats for fish have disappeared in Oosterschelde in the south-east. agenda for fish in the Wadden Sea and also on the species themselves. -
Greater Pipefish (Syngnathus Acus) Actinopterygii (Chordata:Syngnathiformes )
Greater pipefish (Syngnathus acus) Actinopterygii (Chordata:Syngnathiformes ) Chordata->Actinopterygii->Syngnathiformes IUCN Red List Categorisation: Least Concern The family Syngnathidae to which the pipefish belong contains sea horses and pipefish are superficially similar in appearance. Male pipefish incubate eggs in their brood pouch and give birth to fully formed juveniles (~3cm in lenth). This species tends to live in eel grass or in algae and loss of eel grass habitat may impact on the species . A 2006 study found that juveniles have a limited ability to disperse or colonise new areas and this may increase the species vulnerability to habitat fragmentation1. A long thin body with a long, thin snout pipefish are easily distinguishable from any other group of fish in Irish waters. Quite a long fish they can reach up to 50cm in length (see photos below for scale) and are typically found in relatively shallow waters with muddy or sandy bottoms. 4 species of pipefish occur in Irish waters and they can be difficult to distinguish one from another. However the greater pipefish has a distinctive hump behind the eyes (right) which is lacking in other pipefish. 1. Silva, Karine & Monteiro, Nuno & Almada, Vítor & Vieira, Natividade. (2006). Development and early life history behaviour of aquarium reared Syngnathus acus (Pisces : Syngnathidae). Journal of the Marine Biological Associa- tion of the UK. 86. 1469-1472. 10.1017/ S0025315406014536. Most records of this species are from the west, southwest and north coasts of the island with few on the east coast and the data from the Irish Groundfish survey shows a similar pattern. -
The Trophic Structure of a Wadden Sea Fish Community and Its Feeding Interactions with Alien Species
The trophic structure of a Wadden Sea fish community and its feeding interactions with alien species Die trophische Struktur einer Fischgemeinschaft des Wattenmeeres und deren Fraßinteraktionen mit gebietsfremden Arten DISSERTATION Zur Erlangung des Doktorgrades der Mathematisch-Naturwissenschaftlichen Fakultät der Christian-Albrechts-Universität zu Kiel vorgelegt von Florian Kellnreitner Kiel, 2012 Referent: Dr. habil. Harald Asmus Korreferent: Prof. Dr. Thorsten Reusch Tag der mündlichen Prüfung: 24. April 2012 Zum Druck genehmigt: Contents Summary .............................................................................................................................................. 1 Zusammenfassung ................................................................................................................................ 3 1. General Introduction ........................................................................................................................ 5 2. The Wadden Sea of the North Sea and the Sylt-Rømø Bight .........................................................14 3. Seasonal variation of assemblage and feeding guild structure of fish species in a boreal tidal basin. ..................................................................................................................27 4. Trophic structure of the fish community in a boreal tidal basin, the Sylt- Rømø Bight, revealed by stable isotope analysis .........................................................................55 5. Feeding interactions -
Preliminary Report of a Biometric Analysis of Greater Pipefish Syngnathus Acus Linnaeus, 1758 for the Western Black Sea
Turkish Journal of Zoology Turk J Zool (2015) 39: 917-924 http://journals.tubitak.gov.tr/zoology/ © TÜBİTAK Research Article doi:10.3906/zoo-1408-57 Preliminary report of a biometric analysis of greater pipefish Syngnathus acus Linnaeus, 1758 for the western Black Sea Taner YILDIZ*, Uğur UZER, Firdes Saadet KARAKULAK Department of Fisheries Technology, Faculty of Fisheries, İstanbul University, Laleli, İstanbul, Turkey Received: 22.08.2014 Accepted/Published Online: 27.02.2015 Printed: 30.09.2015 Abstract: The main objective of this study was to analyze the differences and similarities in morphometric characteristics among specimens of greater pipefishSyngnathus acus Linnaeus, 1758 that were collected and described based on data from bottom-trawl surveys and commercial trawl fisheries in the western Black Sea between September 2010 and October 2011. A total of 280 specimens were analyzed, of which 191 were female and 89 were male. Female individuals ranged from 15.6 to 33.8 cm in total length, whereas male individuals ranged from 16.6 to 39.2 cm. For the biometric analysis, 14 morphometric characteristics were analyzed. The females and males were found to differ in maximum body height, maximum body width, and head length (P < 0.05). The length–length equations for overall converted body lengths of fish were linear. The morphometric characteristics were strongly positively correlated except for head length / total length and snout width / head length (P < 0.05). The length–weight relationship of this species was described by the following equation: TW (g) = 0.0001 × TL3.415 (cm). Relationships between the characteristics were defined separately for both sexes. -
A Study of Syngnathids Diseases and Investigation
A Study of Syngnathid Diseases and Investigation of Ulcerative Dermatitis by Véronique LePage A Thesis presented to The University of Guelph In partial fulfilment of requirements for the degree of Master of Science in Pathobiology Guelph, Ontario, Canada © Véronique LePage, August, 2012 ABSTRACT A STUDY OF SYNGNATHID DISEASES AND INVESTIGATION OF ULCERATIVE DERMATITIS Dr. Véronique LePage Advisor: University of Guelph, 2012 Dr. John S. Lumsden A 12-year retrospective study of 172 deceased captive syngnathids (Hippcampus kuda, H. abdominalis, and Phyllopteryx teaniolatus) from the Toronto Zoo was performed. The most common cause of mortality was an ulcerative dermatitis, occurring mainly in H. kuda. The dermatitis often presented clinically as ‘red-tail’, or hyperaemia of the ventral aspect of the tail caudal to the vent, or as multifocal epidermal ulcerations occurring anywhere. Light microscopy often demonstrated filamentous bacteria associated with these lesions, and it was hypothesized that the filamentous bacteria were from the Flavobacteriaceae family. Bacteria cultured from ulcerative lesions and DNA extracted from ulcerated tissues were examined using universal bacterial 16S rRNA gene primers. A filamentous bacterial isolate and DNA sequences with high sequence identity to Cellulophaga fucicola were obtained from ulcerated tissues. Additionally, in situ hybridization using species-specific RNA probes labeled filamentous bacteria invading musculature at ulcerative skin lesions. ACKNOWLEDGEMENTS I would first like to thank my advisor John Lumsden for his support and guidance throughout the past 6+ years. He not only has passed on a great deal of wisdom and provided encouragement throughout the years but he has also provided me with the confidence and social connections to excell in the area of aquatic animal medicine and pathology. -
Fish Reverse Ring Test Bulletin F-RRT06
The National Marine Biological Analytical Quality Control Scheme www.nmbaqcs.org Fish Reverse Ring Test Bulletin F-RRT06 2014/2015 Author: Sarah Hussey Reviewed by: Charlotte Newberry Approved by: Richard Arnold Contact: Sarah Hussey [email protected] Thomson Unicomarine Ltd. Date of Issue: March 2015 Contents Tables Table 1. Summary of data and specimens received from participating laboratories for the sixth fish reverse ring test – FRRT_06. Table 2. Summary of taxonomic errors by participating laboratories for the sixth fish reverse ring test – FRRT_06, sorted by taxonomic group. The pages following Table 1 and 2 show the individual laboratory results following the re-analysis of specimens by Thomson Unicomarine Ltd. Appendix 1. References 2 Table 1. Summary of data and specimens received from participating laboratories for the sixth reverse ring test - FRRT_06. Number of Number of Size Range Number of Taxonomic Thomson Unicomarine Species Submitted Taxonomic Specimens (Min - Max; mm) Discrepancies References Errors Raja clavata ; Thornback Ray 1 113 0 0 Wheeler 1969 Engraulis encrasicolus ; Anchovy 5 44 - 94 0 0 Wheeler 1969 Alosa fallax ; Twaite shad 1 330 0 0 Wheeler 1969 Clupea harengus ; Herring 17 42 - 257 0 1 Maitland & Herdson 2009 Sardina pilchardus ; Pilchard 2 48 - 215 1 0 Maitland & Herdson 2009 Sprattus sprattus ; Sprat 13 35 - 122 0 0 Maitland & Herdson 2009 Abramis brama ; Common Bream 1 90 - 160 0 0 Maitland & Herdson 2009 Leuciscus leuciscus ;Dace 2 66-93 0 0 Maitland & Herdson 2009 Phoxinus phoxinus ; Minnow 1 54 0 0 Maitland & Herdson 2009 Rutilus rutilus ; Roach 1 135 0 0 Maitland & Herdson 2009 Barbatula barbatula ; Stone Loach 1 39 0 0 Maitland & Herdson 2009 Argentina sphyraena ; Argentine 1 160 0 0 Maitland & Herdson 2009 Osmerus eperlanus ; Smelt 5 77 - 166 0 0 Wheeler 1969 Salmo salar ; Atlantic Salmon 1 64 0 0 Maitland & Herdson 2009 Salmo trutta ; Brown Trout 1 128 0 0 Maitland & Herdson 2009 3 Table 1. -
Aquatic Zoos
AQUATIC ZOOS A critical study of UK public aquaria in the year 2004 by Jordi Casamitjana CONTENTS INTRODUCTION ---------------------------------------------------------------------------------------------4 METHODS ------------------------------------------------------------------------------------------------------7 Definition ----------------------------------------------------------------------------------------------7 Sampling and public aquarium visits --------------------------------------------------------------7 Analysis of the data --------------------------------------------------------------------------------10 UK PUBLIC AQUARIA PROFILE ------------------------------------------------------------------------11 Types of public aquaria ----------------------------------------------------------------------------11 Animals kept in UK public aquaria----------------------------------------------------------------12 Number of exhibits in UK pubic aquaria --------------------------------------------------------18 Biomes of taxa kept in UK public aquaria ------------------------------------------------------19 Exotic versus local taxa kept in UK public aquaria --------------------------------------------20 Trend in the taxa kept in UK public aquaria over the years ---------------------------------21 ANIMAL WELFARE IN UK PUBLIC AQUARIA ------------------------------------------------------23 ABNORMAL BEHAVIOUR --------------------------------------------------------------------------23 Occurrence of stereotypy in UK public aquaria --------------------------------------29 -
THE IUCN RED LIST of SEAHORSES and PIPEFISHES in the MEDITERRANEAN SEA © Edwin Van Den Sande / Guylian Seahorses of the World Pregnant Male Guttulatus Hippocampus
THE IUCN RED LIST OF SEAHORSES AND PIPEFISHES IN THE MEDITERRANEAN SEA © Edwin van den Sande / Guylian Seahorses of the World Hippocampus guttulatus Hippocampus Pregnant male Key Facts • The Syngnathidae (or ‘Syngnathids’) are a family of fishes which includes seahorses, pipefishes, pipehorses, and the leafy, ruby, and weedy seadragons. The name is derived from the Greek word ‘syn’, meaning “fused” or “together”, and ‘gnathus’, meaning “with jaw’. • The Syngnathidae are in the Order Syngnathiformes, which has one other representative in the Mediterranean: the longspine snipefish, Macroramphosus scolopax (Linnaeus, 1758) (Family: Centriscidae), which is listed as Least Concern at the Mediterranean Sea level. • Syngnathids are unique fishes in that they exhibit male pregnancy and give birth to live young. They may be at heightened extinction risk because they produce relatively few offspring and exhibit high site fidelity. • 13 species are found in the Mediterranean Sea and all have been assessed for the IUCN Red List of Threatened Species at the Mediterranean level. None of species are endemic to the Mediterranean. • Both seahorses found in the Mediterranean (Hippocampus hippocampus and Hippocampus guttulatus) are Near Threatened because their populations are declining as a result of habitat degradation caused by coastal development and destructive fishing gears such as trawls and dredges. Seahorses and pipefishes are taken as bycatch in trawl fisheries and sometimes retained and targeted for sale to aquaria, use in traditional medicines, and as curious and religious amulets. • However more than half of the seahorses and pipefishes found in the Mediterranean Sea (seven species) are currently considered Data Deficient because there is insufficient information available to assess their extinction risk and further research is needed to understand their distribution, population trends and threats. -
Productivity and Susceptibility Analysis: Application and Suitability for Data Poor Assessment of Elasmobranchs in Northern European Seas
SCRS/2012/079 COLLECT. VOL. SCI. PAP. ICCAT, 69(4): 1679-1698 (2013) PRODUCTIVITY AND SUSCEPTIBILITY ANALYSIS: APPLICATION AND SUITABILITY FOR DATA POOR ASSESSMENT OF ELASMOBRANCHS IN NORTHERN EUROPEAN SEAS. Sophy R. McCully1, Finlay Scott1, Jim R. Ellis1, Graham M. Pilling2 SUMMARY National and European-wide shark conservation plans aim to manage elasmobranch stocks sustainably. However there has been limited success towards such targets, as a result of uncertainties and data deficiencies hampering traditional, quantitative assessment and thus effective and practicable management. To this end an assessment method (Productivity Susceptibility Analysis, PSA), was developed for elasmobranchs caught in four mixed fisheries in northern European shelf seas. In the pelagic ecosystem, porbeagle and shortfin mako were identified as the most vulnerable species, followed by two further commercially-important bycatch sharks (thresher and blue shark), and finally swordfish, a target teleost. In the demersal ecosystem, spurdog was found to be the most vulnerable species in both bottom trawl and set net fisheries. A further six elasmobranchs (including five batoids) and three teleosts (one target teleost) comprised the 10 most vulnerable species in bottom trawl fisheries, while in set net fisheries, 11 more elasmobranchs (including eight batoids) followed spurdog in the vulnerability ranking. These results are discussed in relation to commercially assessed species, included to ‘ground-truth’ the relative risk rankings and their conservation status through IUCN listings. RÉSUMÉ Les plans de conservation des requins à l'échelle nationale et européenne visent à gérer les stocks d'élasmobranches de manière soutenable. Toutefois, ces objectifs n'ont connu un succès que très limité, en raison des incertitudes et des insuffisances des données qui ont entravé l'évaluation traditionnelle et quantitative et par conséquent la gestion efficace et viable.