Pt. 1: Recommendations Regarding Fish Stocking and Alternative Options
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A White Paper on the Status and Needs of Largemouth Bass Culture in the North Central Region
A WHITE PAPER ON THE STATUS AND NEEDS OF LARGEMOUTH BASS CULTURE IN THE NORTH CENTRAL REGION Prepared by Roy C. Heidinger Fisheries and Illinois Aquaculture Center Southern Illinois University-Carbondale for the North Central Regional Aquaculture Center Current Draft as of March 29, 2000 TABLE OF CONTENTS INTRODUCTION AND JUSTIFICATION OF THE DOCUMENT ....................2 CURRENT STATUS OF THE INDUSTRY ........................................2 Markets ...................................................................2 Supply/Demand ..........................................................2 Legality ...................................................................3 BIOLOGY/AQUACULTURE TECHNOLOGY .....................................3 Biology ...................................................................4 Culture ....................................................................4 Brood Stock ............................................................4 Fry and Fingerling Production ................................................5 Diseases and Pests ........................................................6 Water Quality, Handling, and Transport ........................................7 CRITICAL LIMITING FACTORS AND RECOMMENDATIONS ....................7 Nutrition ..................................................................7 Production Densities ..........................................................8 Marketing .................................................................8 Diseases ..................................................................8 -
Partnering with Extractive Industries for the Conservation of Biodiversity in Africa
Partnering with Extractive Industries for the Conservation of Biodiversity in Africa: A Guide for USAID Engagement November 2008 This publication was produced for review by the United States Agency for International Development. It was prepared by the Biodiversity Analysis and Technical Support (BATS) Team. PARTNERING WITH EXTRACTIVE INDUSTRIES FOR THE CONSERVATION OF BIODIVERSITY IN AFRICA: A GUIDE FOR USAID ENGAGEMENT November 2008 Biodiversity Assessment and Technical Support Program (BATS) EPIQ IQC: EPP-I-00-03-00014-00, Task Order 02 Dr. Joao Stacishin de Queiroz Brian App Renee Morin Wendy Rice Biodiversity Analysis and Technical Support for USAID/Africa (BATS) is funded by the U.S. Agency for International Development, Bureau for Africa, Office of Sustainable Development (AFR/SD). This program is implemented by Chemonics International Inc., World Conservation Union, World Wildlife Fund, and International Program Consortium in coordination with program partners: the U.S. Forest Service/International Programs and the Africa Biodiversity Collaborative Group. ON THE COVER (Left to Right): Bauxite shipment, Guinea (BATS / Brian App), Oil platform construction site, Namibia (Alexander Hafemann), Illegal Timber Processing, Madagascar (BATS /Steve Dennison), Artisanal Fishing Tools, Mali (BATS / Brian App) The authors’ views expressed in this publication do not necessarily reflect the views of the United States Agency for International Development or the United States Government. CONTENTS Introduction 1 Section I Analysis of Risk and Potential -
Ecosystem Services Generated by Fish Populations
AR-211 Ecological Economics 29 (1999) 253 –268 ANALYSIS Ecosystem services generated by fish populations Cecilia M. Holmlund *, Monica Hammer Natural Resources Management, Department of Systems Ecology, Stockholm University, S-106 91, Stockholm, Sweden Abstract In this paper, we review the role of fish populations in generating ecosystem services based on documented ecological functions and human demands of fish. The ongoing overexploitation of global fish resources concerns our societies, not only in terms of decreasing fish populations important for consumption and recreational activities. Rather, a number of ecosystem services generated by fish populations are also at risk, with consequences for biodiversity, ecosystem functioning, and ultimately human welfare. Examples are provided from marine and freshwater ecosystems, in various parts of the world, and include all life-stages of fish. Ecosystem services are here defined as fundamental services for maintaining ecosystem functioning and resilience, or demand-derived services based on human values. To secure the generation of ecosystem services from fish populations, management approaches need to address the fact that fish are embedded in ecosystems and that substitutions for declining populations and habitat losses, such as fish stocking and nature reserves, rarely replace losses of all services. © 1999 Elsevier Science B.V. All rights reserved. Keywords: Ecosystem services; Fish populations; Fisheries management; Biodiversity 1. Introduction 15 000 are marine and nearly 10 000 are freshwa ter (Nelson, 1994). Global capture fisheries har Fish constitute one of the major protein sources vested 101 million tonnes of fish including 27 for humans around the world. There are to date million tonnes of bycatch in 1995, and 11 million some 25 000 different known fish species of which tonnes were produced in aquaculture the same year (FAO, 1997). -
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). -
2019 Fish Stocking Report
1 Connecticut Department of Energy & Environmental Protection Bureau of Natural Resources Fisheries Division 79 Elm Street, Hartford, CT 06106 860-424-FISH (3474) https://portal.ct.gov/DEEP/Fishing/CT-Fishing The Fish Stocking Report is published annually by the Department of Energy and Environmental Protection Katie Dykes, Commissioner Rick Jacobson, Chief, Bureau of Natural Resources Fisheries Division Pete Aarrestad, Director 79 Elm Street Hartford, CT 06106-5127 Phone 860-424-FISH (3474) Email [email protected] Web https://portal.ct.gov/DEEP/Fishing/CT-Fishing ctfishandwildlife @ctfishandwildlife Table of Contents Introduction 3 Connecticut’s Stocked Fish 3 DEEP State Fish Hatcheries 6 Connecticut’s Hatchery Raised Trout 9 When and Where are Trout Stocked? 10 Trout and Salmon Stamp 11 Youth Fishing Passport Challenge – Top Anglers 2019 12 2019 Stocking Summary 13 Trout Stocked by the Fisheries Division: Summary of Catchable Trout Stocked in 2019 14 Lakes and Ponds 15 River, Streams, and Brooks 19 Other Fish Stocked by the Fisheries Division 26 Brown Trout Fry 26 Broodstock Atlantic Salmon 27 Kokanee Salmon fry 27 Northern Pike 28 Walleye 28 Channel Catfish 29 Migratory Fish Species Stocking 30 Don’t Be a Bonehead 32 Cover: Caring for a young child can be challenging. Trevor Harvey has it covered by taking his daughter fishing. In addition to introduce the next generation of anglers to fishing, he also landed a beautiful looking rainbow trout. The Connecticut Department of Energy and Environmental Protection is an Affirmative Action/Equal Opportunity Employer that is committed to complying with the requirements of the Americans with Disabilities Act. -
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 -
1998-Vol24-No1web.Pdf
Voices .-m.*r +- s I s IT down to write an address itself solely to fly fishing. We introduction to our Winter Mary have excerpted two chapters here, "An- A1998 issue, I am fresh from a Orvis Mar- gling as a Medicine" and "Capture of conversation with Richard C. Hoff- bury flies in our col- My First Salmon." I think you'll appre- mann in which we reviewed the page lection. Betts, who rescued ciate both Dawson's voice and counsel. proofs of his book excerpt (see page 2). the flies when he was cleaning out Back to Baja. I was lucky enough to This conversation was one of several the attic of Orvis's old factory building be among the 150 or so who attended we've had in the course of the last back in the mid-196os, has his own his- the second International Festival of month or so, and I enjoyed it thor- torical attachment to the collection of Women Fly Fishers there from Novem- oughly. models used for the color plates in her ber 5 to lo, 1997. I was there represent- One of the most satisfying aspects of 1892 book. You can hear a bit of his ing the Museum as a member of a pub- this job is beginning to know the au- voice in "Some of Marbury's Favorite lications panel led by former editor thors-dealing not only with the voice Bass and Fancy Lake Flies." Margot Page. Another member was of a written work, but also with the And Jiirgen Preylowski, that fabu- Lyla Foggia, an author whose book, author's more personal voice through lous designer and art director from Reel Women: The World of Women Who letters and phone conversations. -
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 -
Perfect Stocking Density Ensures Best Production and Economic Returns in Floating Cage Aquaculture System Farhaduzzaman AM1, Md
OPEN ACCESS Freely available online e Rese tur arc ul h c & a u D q e A v e f l o o Journal of l p a m n r e u n o t J ISSN: 2155-9546 Aquaculture Research & Development Research Article Perfect Stocking Density Ensures Best Production and Economic Returns in Floating Cage Aquaculture System Farhaduzzaman AM1, Md. Abu Hanif2,3*, Md. Suzan Khan1, Mahadi Hasan Osman1, Md. Neamul Hasan Shovon1, Md. Khalilur Rahman3, Shahida Binte Ahmed3 1Fisheries and Livestock Unit, Palli Karma-Sahayak Foundation, Bangladesh; 2Department of Fisheries Biology and Genetics, Patuakhali Science and Technology University, Bangladesh; 3Fisheries and Livestock Unit, Grameen Jano Unnayan Sangstha, Bangladesh ABSTRACT A density dependent research was conducted on Oreochromis niloticus to determine the growth performance, body composition, survivability, yield and financial returns in floating cage fish culture system in a tributary of Tetulia River, Bhola. Juvenile monosex tilapia with an average weight of 40.2 g were stocked in 5 floating net cages at a density of 1000 (C1), 1200 (C2), 1500 (C3), 1800 (C4) and 2000 (C5) respectively. Fish were fed with a commercial floating feed twice daily in all the treatments. After 120 days, growth in terms of body final length and weight, weight gain, percent weight gain, specific growth rate, daily weight gain, gross and net production of fish were calculated and found C3 were comparatively higher than others. Survival rate was decreased with increasing stocking density. According to cost benefit analysis (CBA), stocking density 1200 per cage was the most suitable but it should not rise more than 1500 per cage for commercial monosex tilapia culture in cage aquaculture system. -
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. -
Farm Pond Management for Recreational Fishing
MP360 Farm Pond Management for Recreational Fishing Fis ure / herie ult s C ac en u te q r A Cooperative Extension Program, University of Arkansas at Pine Bluff, U.S. Department of Agriculture, and U f County Governments in cooperation with the Arkansas n f i u v l e B Game and Fish Commission r e si n ty Pi of at Arkansas Farm Pond Management for Recreational Fishing Authors University of Arkansas at Pine Bluff Aquaculture and Fisheries Center Scott Jones Nathan Stone Anita M. Kelly George L. Selden Arkansas Game and Fish Commission Brett A. Timmons Jake K. Whisenhunt Mark Oliver Editing and Design Laura Goforth Table of Contents ..................................................................................................................................1 Introduction ..................................................................................................................1 The Pond Ecosystem .................................................................................................1 Pond Design and Construction Planning............................................................................................................................................2 Site Selection and Pond Design.......................................................................................................2 Construction…………………………………………………………………………… .............................3 Ponds for Watering Livestock..........................................................................................................3 Dam Maintenance ............................................................................................................................3