Estimating the number of Broodfish and Spawning. Number of Broodfish Production goals determine the number of broodfish required to produce the desired.

Slides:



Advertisements
Similar presentations
Maintenance of Landscape Maintain newly planted plants in a given environment Prune ornamental plants to maintain an attractive landscape.
Advertisements

Class 3: Soil Sampling and Testing Chris Thoreau.
Guidelines for Setting “Proper” Stocking Rate
Math 2320 Differential Equations Worksheet #4. 1a) Model the growth of the population of 50,000 bacteria in a petri dish if the growth rate is k.
By Danny Chase. Where they live Mississippi river Missouri River Moderate to swift currents Sandy Wide river areas 2-47 feet deep Muddy warm water.
Hormones in Aquacultre/Fish Reproduction Dr. Craig Kasper.
About Milkweed Bugs Large Milkweed Bug Small Milkweed Bug
Salmon Life Cycle Oregon Department of Fish and Wildlife
Introduction This Hatching Picture Tutorial is a product of the Catfish Hatchery of Abaflix Emerald Investment Ltd, Plot 6, Sanni-Luba Street, G.R.A, Ijebu-Ode.
Impacts of the 2010 Cold Stun Event on N.C. Spotted Seatrout N. C. Marine Fisheries Commission New Bern November 4, 2010.
American Cichlid Pond Propagation
Will Coker. us Sciaenops Ocellatus Wide distribution spreading from the Western Atlantic to Mexico and S. America Found in sandy or muddy coastal waters.
The Seahorse During courtship, the female sea horse transfers her eggs to the father's pouch, located under his tail. The father can carry as many as.
WARM-FRESHWATER AQUACROPS [objectives]
Environmental Resources Unit C Animal Wildlife Management.
Life history Broodstock –Spawning and care –Fertilization methods Egg development and hatching –Stages of development –Methods of incubation Fry rearing.
Gender Determination, Care, Water Quality Management, and Nutrition.
The Tale of the Tape Measuring Pond Surface Area and Volume for Stocking and Chemical Applications Billy Higginbotham Professor and Extension Wildlife.
Pond Management Chapter 21. Ponds or Small Impoundments
Arkansas Farm Pond Management Calendar Although managing a small pond or lake is a year-round effort, timing is often critical to the success of individual.
Propagating and Selling Fish!
Bull Minnow Aquaculture Kaylee D’Aloise. Taxonomy Scientific Name: -Fundulus grandis Common Names: -gulf Killifish -mud minnows -mudfish -bullminnow.
Improving Catfish Production Efficiency Gary Burtle Animal & Dairy Science University of Georgia.
Presentation by Karen Jensen Marine Aquaculture 2013.
Condensation Piping and Installation Drain Pans
Selection and Breeding Programs. Management Broodfish management is an important aspect of channel catfish culture Having a reliable source of fingerlings.
Aquaculture of the Bluefin Tuna. Taxonomy Genus Thunnus Species: Maccoyii, Orientalis, Thynnus.
CHANNEL CATFISH CULTURE
Fecundity Management Strategies. Why Talk About This? As managers, we utilize various methods in managing broodstock collection – we never want to be.
Importance of Protecting Lake Trout. 250,000 lakes in Ontario 1% of these contain lake trout Central/eastern Ontario has >1/3 of lakes Provincial responsibility.
Limits on Population can the world be taken over by one organism?
Food Fish Aquaculture Cortney Ohs, Ph.D. University of Florida Indian River Research and Education Center School of Forest Resources and Conservation Program.
Thomas Piecuch  Natural range extends from central Mexico to Massachusetts.  World Record 94 lbs. 2 oz.  AL state record.
Planting & Maintenance of Ornamental Plants By: Johnny M. Jessup Agriculture Teacher/FFA Advisor.
The husbandry of marine or saltwater organisms Mariculture.
REPRODUCTION Part 1 OCS Biology Mrs. Bonifay. Spontaneous Generation Many years ago, some people thought living things could come from nonliving things.
Aquatic animal diseases, Health care & Management © TANUVAS, 2011 Visit to organized hatchery Contents Components of a fish hatchery Brood fish ponds Breeding.
Fish Biology
Environmental Resources Unit C Animal Wildlife Management.
Yellow Perch Broodstock
Hamlin Lake Fisheries Management: Past, Present, and Future Hamlin Lake Preservation Society, 8/2/2013 Mark Tonello, MDNR Fisheries Management Biologist.
Rejuvenation of Hawaiian Fishponds Part 1. Reproduction of Hawaiian Oysters Part 2. Extension Services on the Big Island Daren Garriques Jr. Extension.
Techniques to Develop Food- Sized Sunfish Lincoln University Charles E. Hicks Principle Investigator *
There are five known species of peacock bass. The Peacock Bass is an exotic species that is originate and thrive in South American waters. The range of.
Artificial breeding of Greater bony lipped barb (Osteochilus melanopleura) Aquaculture of Indigenous Mekong Fish Species (AIMS), Vietnam Component Aquaculture.
Spring Management of over winter colonies / Making Nuc’s.
Unit VIII Post stocking management. INTRODUCTION This phase includes the activities to be undertaken from stocking of fingerlings up to the final harvesting.
 Bull Minnow Fundulus Grandis A.K.A. Gulf Killifish, Mud Minnows.
© DRL © 2014 CHANGE. Game Rules: 1. Roll die and move forward that number of spaces 2. Choose another player to draw a card for the part of the.
Commonly Cultured Species in the United States Spring 2013 Davis.
Copyright © 2012 Delmar, Cengage Learning. ALL RIGHTS RESERVED. Chapter 10 The Aquaculture Industry.
By:Brynley Jo Bald Eagles.
By: Ben I. and Leo W.. Recommended Fish  Goldfish: usually don’t live very long but in some cases they can live up to a year.  Betta Fish: can live.
Fish Health Management
Bell Work Typically in Arizona When does the Bass spawning season begin?
SELECTION METHODS AND BREEDING PLANS. NEED FOR GENETIC VARIATION  Genetic variation provides the raw material for selection.  Without additive genetic.
Different types of fish hatcheries - Chinese type of carp hatchery
Breeding of common carp (Cyprinus carpio)
SPAWNING TECHNIQUES: INDUCED BREEDING, ARTIFICIAL AND NATURAL SEX-REVERSAL, HYBRIDIZATION Because development occur externally, it is possible to direct.
Marine Animal Reproductive Behaviour
Aquaculture Unit 11th -12th Grade.
Aquaculture Unit 6 Lesson 1
Freshwater Prawns in Georgia
About Milkweed Bugs Large Milkweed Bug Small Milkweed Bug
Estimating the number of Broodfish and Spawning
?.
Gender Determination, Care, Water Quality Management, and Nutrition
Selection and Breeding Programs
Culture of Hybrid Striped Bass In the U. S.
Trout and Salmon Culture
Presentation transcript:

Estimating the number of Broodfish and Spawning

Number of Broodfish Production goals determine the number of broodfish required to produce the desired number of fingerlings If fingerlings are used on the farm, the producer only needs enough to replace the fish that will be harvested and sold in the following year If the fingerlings will be sold to other producers, the annual production goal is based on the number of fingerlings needed to achieve a certain income Production may be limited by the available pond space

Number of Broodfish The number of pounds of female broodfish required to produce a specific number of fingerlings can be estimated based on: Assumption of egg production Survival of eggs to fry in the hatchery Survival of fry to fingerlings in the nursery

Number of Broodfish ConditionsDesired NumberNumber Needed 70% of swim-up fry survive to become fingerlings 1,000,000 (million) fingerlings 1,000,000/0.70=1,429,000 swim-up fry required 80% survival in the hatchery from egg to swim-up fry 1,000,000 (million) fingerlings 1,429,000/0.80=1,786,000 eggs required 3,000 eggs are produced per pound of body weight 1,000,000 (million) fingerlings 1,786,000/3,000=596 pounds of female broodfish required

Number of Broodfish The average range of broodfish ponds used in the southeastern U.S. is 5 to 30 acres The more manageable ponds range from 5 to 10 acres Stocking broodfish into several ponds is recommended Stocking all of the broodfish into one pond is risky All of the broodfish and subsequent progeny could be lost if water quality deteriorates or a disease outbreak occurs

Spawning Seasonal changes in water temperature control the reproductive cycle in channel catfish Exposure to water temperatures below 50 F for a month or more over the winter stimulates egg production The subsequent slow rise in the average water temperature to 68 to 77 F initiates spawning in the spring

Spawning The majority of channel catfish are spawned using the open pond method: Broodfish are held in ponds with spawning containers Can be milk or cream cans, metal barrels, nail kegs, tile, ammunition cans, plastic buckets, or plastic containers The fish are allowed to select their mates and spawn naturally

Spawning Most spawning containers have an internal volume of 20 gallons and an opening of 6 to 9 inches across Spawning containers are not placed in the pond until the water temperature reaches 75 F The channel catfish spawning season in the U.S. can begin in early April and last until mid-July

Spawning The length of the season and the start of the season depend on water temperature Once water temperature has reached 70 F and remains at that temperature for at least 3 consecutive days, spawning begins In the southern U.S. spawning season usually begins in late April In the northern U.S. spawning season does not begin until mid-May

Spawning Spawning containers are placed in the ponds several days before the beginning of spawning season This gives the males time to clean and prepare them Containers are placed along the pond bank in 2 to 3 feet of water at 10- to 30-foot intervals with the open end of the container toward the center of the pond Containers are marked with a stake or float for convenient location when there is need to check for egg masses

Spawning Not all fish spawn at the same time It is not necessary to have a spawning container for every pair of fish The number of containers needed depends on whether the egg mass will remain in the pond and receive paternal care or will be removed to the hatchery If egg masses are not immediately removed to the hatchery, more containers will be needed because each container will be occupied longer

Spawning Various ratios of containers to stocked broodfish pairs have been used 1:4 and 1:5 are common Spawning may cease if water quality deteriorates or weather turns unreasonably warm Spawning may resume if water temperature drops within 10 to 25 days of the onset of warm weather One option may be to drain the pond and replace one- fourth to one-half of the pond water with cool, high quality well water to resume spawning

Spawning Once spawning begins, containers should be inspected during the late morning of every third or fourth day to determine if eggs are present If little or no spawning activity occurs, broodstock should be checked for parasites or disease Always continue feeding

Spawning You may want to consider moving the fish if the lack of spawning cannot be attributed to poor water quality or disease You can resume spawning by moving the fish to newly filled ponds or into existing brood ponds where spawning has been successful and is nearly complete