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EVALUATION of BOTANICAL PISCICIDES on NILE TILAPIA Oreochromis Niloticus L
EVALUATION OF BOTANICAL PISCICIDES ON NILE TILAPIA Oreochromis niloticus L. AND MOSQUITO FISH Gambusia affinis BAIRD AND GIRARD Arsenia G. Cagauan, Marjorie C. Galaites and Lorenz J. Fajardo College of Fisheries and Freshwater Aquaculture Center Central Luzon State University, Science City of Muñoz, Nueva Ecija 3120, Philippines Abstract The study assessed the piscicidal activity of ten locally available plants to two freshwater fishes; Nile tilapia (O. niloticus L.) and mosquito fish (G. affinis Baird and Girard). It focused on the laboratory determination of lethal concentrations (LC50 and LC100) through a static bioassay test. The ten plants tested were ampalaya Momordica charantia, adelfa Nerium indicum, agave Agave cantala, kalamansi Citrus mitis, lagundi Vitex negundo, madre de cacao Gliricidia sepium, makabuhai Tinosphora rhumpii, neem Azadirachta indica, physic nut Jatropa curcas and sambong Blumea balsamifera. Based on the 24-hour lethal concentration (LC100), the plants with the strongest piscicidal activity to Nile tilapia and mosquito fish were makabuhai and kalamansi, respectively. The toxicity to Nile tilapia of the ten plants arranged in the order of decreasing toxicity is as follows: makabuhai (0.82 ml l-1) > adelfa (1.06 ml l-1) > ampalaya (2.59 ml l-1) > kalamansi (5 ml l-1) > neem (12.4 ml l-1) > physic nut (26.67 ml l-1) > lagundi (31.5 ml l-1) > agave (74.29 ml l-1) > madre de cacao (90 ml l-1) > sambong (125.71 ml l-1). For mosquito fish, the toxicity of the ten plants arranged in the order of decreasing toxicity is as follows: kalamansi (3 ml l-1) > makabuhai (6 ml l-1) > adelfa (7.87 ml l-1) > neem (8.31 ml l-1) > ampalaya (13.5 ml l-1) > lagundi (50 ml l-1) > sambong (80 ml l-1) > physic nut (81.67 ml l-1) > agave (102.08 ml l-1) >madre de cacao (117.5 ml l-1). -
Preliminary Researches on the Effect of Essential Oils on Moulds Isolated
Popa G. O. et al./Scientific Papers: Animal Science and Biotechnologies, 2018, 51 (2) SaMSTNb23 and SaMSTNb33: Emerging Markers for Growth Traits in Huchen (Hucho hucho, Linnaeus, 1758) 1, 1, 1 1 Gina–Oana Popa ‡, *, Ramona Nechifor ‡, Alexandru Burcea , Maria Samu , Andreea Dudu1, Marieta Costache1, Marilena Maereanu2, Sergiu Emil Georgescu1 1University of Bucharest, Faculty of Biology, Department of Biochemistry and Molecular Biology, 91-95 Splaiul Independenței, 050095, Bucharest, Romania 2S.C. Danube Research-Consulting S.R.L., 89bis Câmpia Libertății Street, 825200, Isaccea, Romania ‡The first two authors contributed equally to this work. Abstract Huchen or Danube salmon (Hucho hucho, Linnaeus, 1758) is an economically and ecologically valuable salmonid species, among the most endangered fish species inhabiting the Danube basin. Consequently, appropriate conservation measures are required to prevent the species extinction. Although H. hucho is a poorly studied species, there are several studies on other salmonid species regarding fast growth markers. Following these studies, the main purpose of the current study was to determine growth-related SNPs in myostatin gene in H. hucho. Therefore, we analysed 20 aquaculture individuals of same age separated in two groups according length and weight, by sequencing the amplification product of SaMSTNb23 and SaMSTNb33 primers pairs. We also statistically analysed the differences in the development of individuals over time regarding total length, weight and head length. Significantly variations were observed (p < 0.001) for the measured traits in both groups. Regarding the genetic analysis, we observed nine SNPs in the mstn gene structure. Considering these results, it appears that the analysed markers are not appropriate for genetic analysis of growth traits in H. -
Huchen (Hucho Hucho) ERSS
Huchen (Hucho hucho) Ecological Risk Screening Summary U.S. Fish & Wildlife Service, April 2011 Revised, January 2019, February 2019 Web Version, 4/30/2019 Photo: Liquid Art. Licensed under CC-SA 4.0 International. Available: https://commons.wikimedia.org/wiki/File:Danube_Salmon_-_Huchen_(Hucho_hucho).jpg. (January 2019). 1 Native Range and Status in the United States Native Range From Froese and Pauly (2019): “Europe: Danube drainage [Austria, Bosnia and Herzegovina, Bulgaria, Croatia, Germany, Hungary, Italy, Romania, Serbia, Slovakia, Slovenia, Switzerland, and Ukraine].” “Population has declined [in Slovenia] due to pollution and river regulation. Conservation measures include artificial propagation and stocking [Povz 1996]. Status of threat: Regionally extinct [Bianco and Ketmaier 2016].” 1 “Considered locally extinct (extirpated) in 1990 [in Switzerland] [Vilcinskas 1993].” “Extinct in the wild in 2000 [in Czech Republic] [Lusk and Hanel 2000]. This species is a native species in the basin of the Black Sea (the rivers Morava and Dyje). At present, its local and time- limited occurrence depends on the stocking material from artificial culture. Conditions that will facilitate the formation of a permanent population under natural conditions are not available [Lusk et al. 2004]. […] Status of threat: extinct in the wild [Lusk et al. 2011].” From Freyhof and Kottelat (2008): “The species is severely fragmented within the Danube drainage, where most populations exclusively depend on stocking and natural reproduction is very limited due to habitat alterations and flow regime changes.” From Grabowska et al. (2010): “The exceptional case is huchen (or Danubian salmon), Hucho hucho. The huchen’s native range in Poland was restricted to two small rivers (Czarna Orawa and Czadeczka) of the Danube River basin, […]” Status in the United States Froese and Pauly (2019) report an introduction to the United States between 1870 and 1874 that did not result in an established population. -
Imagine the Silver Beauty and the Fighting Spirit of Atlantic Salmon; The
Sakhalin Silver Text and Photos: Clemens Ratschan Imagine the silver beauty and the fighting spirit of Atlantic salmon; the complex, unpredictable life- history of sea trout and combine with the ferocious take and body mass of a predatory taimen. This will give you a glimpse of what fishing for Sakhalin taimen, the silver of the Russian Far East, is about. AM PLEASED TO introduce Siberian taimen, Hucho taimen. No this fish to the readers of wonder, scientists also erroneously Chasing Silver, because in related this far-eastern species to many respects it forms a the large-sized, non-anadromous missing link between the predators of the genus Hucho, which Ifishery for anadromous salmon and is a branch of the salmonoid tree for huchen, a big predatory non- that occurs exclusively in Eurasia. anadromous salmonoid in my home In Central Europe, Hucho hucho is country of Austria (‘Danube salmon’ restricted to the Danube System, in English. See article “Taimen” by where self-sustaining stocks are Wolfgang Hauer, issue 3/2010). presently only found in a handful of Sakhalin taimen is one of the rivers in Germany, Austria, Slovakia least-known salmonid species among and former Yugoslavia. Huchen is non-Russian fishermen; even many very closely related to the already- Russians tend to confuse it with the mentioned Siberian taimen. The latter | 62 | Chasing Silver Fly Fishing Magazine April’s Fav Five www.chasingsilvermagazine.com | 63 | Sakhalin Silver inhabits a distant, vast range from a habits. But one ecological feature expeditions to Japan. Later, the fish few places in European Russia to the is unique – all members of the true was assigned to the genus Parahucho, Lena and Amur rivers in the very far huchen live exclusively in fresh water, with regard to some obvious east of northern Asia. -
FISHING NEWSLETTER 2020/2021 Table of Contents FWP Administrative Regions and Hatchery Locations
FISHING NEWSLETTER 2020/2021 Table of Contents FWP Administrative Regions and Hatchery Locations .........................................................................................3 Region 1 Reports: Northwest Montana ..........................................................................................................5 Region 2 Reports: West Central Montana .....................................................................................................17 Region 3 Reports: Southwest Montana ........................................................................................................34 Region 4 Reports: North Central Montana ...................................................................................................44 Region 5 Reports: South Central Montana ...................................................................................................65 Region 6 Reports: Northeast Montana ........................................................................................................73 Region 7 Reports: Southeast Montana .........................................................................................................86 Montana Fish Hatchery Reports: .......................................................................................................................92 Murray Springs Trout Hatchery ...................................................................................................................92 Washoe Park Trout Hatchery .......................................................................................................................93 -
Genetic Evaluation of the Self-Sustaining Status of a Population of the Endangered Danube Salmon, Hucho Hucho
Hydrobiologia DOI 10.1007/s10750-016-2726-6 PRIMARY RESEARCH PAPER Genetic evaluation of the self-sustaining status of a population of the endangered Danube salmon, Hucho hucho S. Weiss . T. Schenekar Received: 6 October 2015 / Revised: 1 March 2016 / Accepted: 2 March 2016 Ó The Author(s) 2016. This article is published with open access at Springerlink.com Abstract A new multiplex microsatellite protocol Keywords Huchen Á Microsatellites Á Stocking Á was developed for population screening of the endan- Parentage analysis Á IUCN Á European habitat directive gered Danube salmon (or huchen) Hucho hucho. Allelic variation was screened at five newly cloned and four previously published loci in 246 samples to help evaluate the self-sustaining status of an urban Introduction population of huchen in the framework of a contro- versial environmental assessment in the Mur River, The endangered Danube salmon Hucho hucho (Lin- Austria. The loci revealed 78 alleles (mean = 8.6), naeus, 1758), or huchen as commonly known in and in the Mur River an average expected heterozy- Central Europe, is among the largest salmonid fishes in gosity of 0.668. We inferred that the huchen popula- the world. Endemic to the Danube basin, huchen have tion in and around the city of Graz is self-sustaining lost, according to Holcˇ´ık(1990), two-thirds of its based on the following evidence, which includes both global distribution and up to 90% of its original habitat genetic and non-genetic sources of information: (1) in particular regions, such as Austria (Schmutz et al., there is little to no current stocking; (2) presence of 2002). -
FWP Fish Removal Projects Fish and Wildlife Commission Work Session May 18, 2021
FWP Fish Removal Projects Fish and Wildlife Commission Work Session May 18, 2021 Fish removal is a common method used to manipulate population densities and species composition of a fishery. Fish removals may be used to reduce competition between species, remove undesirable or invasive species, protect species with elevated conservation risk, or to improve the quality of a sport fishery. Removals are often intended to restore or reintroduce native fish to a drainage or to improve an existing fishery. Most removal projects aspire to improve fishing opportunity by reintroducing species better suited for available habitats or by reducing competition with other species. Tools commonly used by FWP for removal include angling regulations, netting and electrofishing, dewatering, construction of barriers, and use of piscicides/chemicals (Table 1). These are described in more detail below. Table 1: Comparison of fish control or removal methods commonly used for fisheries management. Control Method Advantages Disadvantages Typical Use Angling regulations Allows harvest of Slow, angling pressure often Used where total removal not fish, and less fish inadequate for significant possible or necessary waste change, and many species/sizes not vulnerable Netting and Can allow for Unlikely to eradicate fish and Used in large lakes or rivers where Electrofishing selective removal could harm non-targeted species chemicals not feasible, small streams through bycatch to reduce species competition, or where sensitive/endangered species must be protected Dewatering -
False to UVS. Mothers and Gown on Sunday, Oct
You Cannot Vote Nov.'4 unless You Are Made a Voter Today home of .M r and.Mra Keith Cook ‘ ^ Gaidtier-hqM£L ... 'Jjliyg.. ..j; MM U it T u f Of S41 OeaUr are welcome. ' 18 awmNr of the Welfare of tlte Martao Coipa licketa for the Manchester Reg Averagg Daily Net Press Run The Weather A fSiW Aawelation of Jfew York, istered Ndraes hafveat dance to Set Coal 4>l^ $ 7 ,5 0 0 to For'tha Week Ended Forecast of t],' 8. Weather ' wea i ^ n a rtstng vote of morrow. night at theTOuntry Club' Oct. 11. 1853 on at a refular meet- are availaBle at the gift-vhop at Su p p ^ 1 ,1 0 0 Girls in : ’ the aaaodation In the MM- the hoepltal. Tonight fair, cold; low In lower itm Houao in Hew York Ctty ------- ■ ' Manef^tee'h Program' 10,641 SFe; froot In" low plaeoa. Sunday ’soSkMattay nifrht for hie outatandlng Ail girls participating in the fair, a little warmer; higB In low Girl Scout community service pro~ " n i chairman ' qf the Manches- Member eT the Abdlt er ere. - waA' In helping Marine veterane. Bf.OrwUatleBa. , , ■s. ' ^— eepeetanjr tn the fleld ofTjtrtamtnB gram 'in ■«»« ■ window of W ilkins l^ G lirl K out' flilance' cqrnmtttK;' M ancheM ler-^4 City o f Viliage Charm- store next ,>(i'*ek are urged to Be amptl^inenL Mr. Markey la the i . R< Monahan, announce! that thCi OMUMCticut welfare repreaentatlve at the Girl Seput office. 983 Main street, tomorrow' morning at 10 annual houae-tO-houae . -
APPENDIX C Use of Piscicides and Neutralization Compounds
APPENDIX C Use of Piscicides and Neutralization Compounds Historic Use of Piscicides to Manage Fisheries Fisheries managers rely on a variety of tools to manage and assess fish populations. Historically, these have included the use of piscicides. Two piscicides, rotenone and antimycin A, are currently registered by EPA for general use in the United States under the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA). By law, the EPA is authorized to register a pesticide only if it will not cause unreasonable adverse effects on human health or the environment. Originally, piscicides were mainly used to control out-of-balance or undesirable fish populations so that sport fish could be stocked for recreational purposes. Today, antimycin and rotenone are used in fisheries management for a variety of purposes, including (Finlayson et al. 2000): • Eradication of nonnative fish, • Restoration of threatened and endangered fish, • Support of recreational fisheries by controlling undesirable fish, • Eradication of fish to control disease, • Quantification of populations of aquatic organisms, • Eradication of competing fish in rearing facilities or ponds prior to restocking. Although physical removal methods (e.g., nets, traps, seines, electrofishing, dewatering, and combinations of physical control techniques) are available for reducing or controlling fish communities, they are generally incapable of eradicating fish (Finlayson et al. 2000). Meronek et al. (1996) review of fish control projects found that success rates for physical removal methods ranged from 33 percent to 57 percent. In most streams, only piscicide applications or complete dewatering can eradicate entire populations of undesirable fish (Schnick 1974). Rotenone Rotenone has been used in the United States to manage fish populations since the 1930s and is the piscicide of choice for application in ponds and lakes. -
Acute Toxicity Evaluation of Water Extract Stem Barks of Balanites Aegyptiaca on Adults of Three Different Fish Species
Vol. 11(2), pp. 9-15, February 2019 DOI: 10.5897/JTEHS2018.0426 Article Number: CC6770C60069 ISSN: 2006-9820 Copyright ©2019 Journal of Toxicology and Environmental Author(s) retain the copyright of this article http://www.academicjournals.org/JTEHS Health Sciences Full Length Research Paper Acute toxicity evaluation of water extract stem barks of Balanites aegyptiaca on adults of three different fish species Alamrew Eyayu1,2* and Abebe Getahun2 1Department of Biology, College of Natural Sciences, Debre Berhan University, Debre Berhan, P. O. Box 445, Ethiopia. 2Department of Zoological Sciences, Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia. Received 17 December, 2018: Accepted 7 January, 2019 A 96 h static toxicity bioassay was carried out to examine fish responses and to determine the median lethal concentration (LC50) of Balanites aegyptiaca stem bark extract on adults of Brycinus nurse, Labeobarbus bynni and Labeobarbus intermedius. Experimental fish were exposed to piscicide plant extract of 0.0 (control), 15.0, 17.5, 20.0, 22.5, and 25.0 mgL-1. Fish exposed to these extracts except the control showed symptoms of toxicity including darting, agitated swimming, air gulping, loss of sensitivity and knockdown before death. These responses were much frequent and faster in L. bynni -1 and L. intermedius. The 96 h LC50 values for the different test fishes were 18.99, 20.72 and 20.72 mg L for L. bynni, L. intermedius and B. nurse, respectively. Based on the present investigation, we can conclude that the application of B. aegyptiaca extract causes lethal toxic effects on different fishes even at low concentrations and hence, indiscriminate use of the plant for fishing should be discouraged and regulated in order to protect fish biodiversity lose in the Alitash National Park area. -
First Record of Ectobiont Community on Wild Salmonids in Serbia
International Journal of Innovative Studies in Aquatic Biology and Fisheries (IJISABF) Volume 2, Issue 1, 2016, PP 25-28 ISSN 2454-7662 (Print) & ISSN 2454-7670 (Online) www.arcjournals.org First Record of Ectobiont Community on Wild Salmonids in Serbia Vera Nikolic¹, Sasa Maric¹, Dubravka Skraba¹*, Ana Tosic¹, Danilo Mrdak², Simonovic Predrag¹ ¹University of Belgrade, Faculty of Biology , Studentski trg 16, 11000 Belgrade, Serbia ²University of Montenegro, Faculty of Sciences and Mathematics, Department of Biology, George Washington bb, Podgorica, Montenegro [email protected],[email protected],[email protected],[email protected], [email protected], [email protected] Abstract: During 2007 and 2008 133 graylings (Thymallus thymallus), 30 huchen (Hucho hucho) and 4 brown trout (Salmo trutta) were sampled from 3 rivers in Southwest Serbia and were examined for ectobionts. Apiosoma piscicola, Epistylis lwoffi, Gyrodactylus derjavini were the representative ectobiont species on fish examined. Greater ectobiont richness was observed in April in Poblacnica River. Keywords: wild salmonids, ectobionts, Serbia. 1. INTRODUCTION Up to now, investigations of ectobionts, including parasitic organisms, were not accomplished on the salmonids in Serbia. Parasitic investigations have been done on fish species from eight hill- mountanious watercourses, two lakes and one salmonid fishpond of Sjenicko-Pesterska plateau (Uvac River Basin, south-west region of Serbia) (Cakic, 1992). Also, studies of freshwater fish ectoparasites in lakes of Homolje area have been performed (Nikolic and Simonovic 2002; Nikolic et al. 2006). Health condition of salmonid populations from Serbian waters, graylings above all, has become very important for the past few decades because constructing hydropower objects, reinforced catch and inadequate protection may lead to moving of distribution boundaries in Europe (Jankovic, 2010). -
EIFAC Technical Paper No. 42 EIFAC/T42
EIFAC Technical Paper No. 42 EIFAC/T42 REPORT OF THE SYMPOSIUM ON STOCK ENHANCEMENT IN THE MANAGEMENT OF FRESHWATER FISHERIES Held in Budapest, Hungary 31 May – 2 June 1982 in conjunction with the Twelfth Session of EIFAC FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome 1982 The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. M-43 ISBN 92-5-101280-6 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying or otherwise, without the prior permission of the copyright owner. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Publications Division, Food and Agriculture Organization of the United Nations, Via delle Terme di Caracalla. 00100 Rome, Italy. © FAO 1982 PREPARATION OF THIS DOCUMENT This report of the Symposium on Stock Enhancement in the Management of Freshwater Fisheries summarizes the first of a series of two symposia to be held by the European Inland Fisheries Advisory Commission (EIFAC) on the topic of management of inland waters. The present report will be supplemented by a Proceedings reproducing in full the text of the contributions submitted as listed in Appendix 1. The report of the second symposium will be produced following the meeting of the Thirteenth Session of EIFAC in 1984.