WWW.DISSERTATION.XLIBX.INFO
FREE ELECTRONIC LIBRARY - Dissertations, online materials
 
<< HOME
CONTACTS



Pages:   || 2 | 3 | 4 | 5 |

«Cortney L. ohs r. Leroy CresweLL MAtthew A. DiMAggio University of Florida/iFAs Indian River Research and Education Center 2199 South Rock Road Fort ...»

-- [ Page 1 ] --

growing

MARINE

BAITFISH

A guide to

Florida’s common

marine baitfish and

their potential for

aquaculture

growing

MARINE

BAITFISH

A guide to

Florida’s common

marine baitfish and

their potential

for aquaculture

Cortney L. ohs

r. Leroy CresweLL

MAtthew A. DiMAggio

University of Florida/iFAs

Indian River Research and Education Center 2199 South Rock Road Fort Pierce, Florida 34945 sgeB 69 February 2013

CONTENTS

2 Croaker Micropogonias undulatus 3 Pinfish Lagodon rhomboides 5 Killifish Fundulus grandis 7 Pigfish Orthopristis chrysoptera 9 Striped Mullet Mugil cephalus 10 Spot Leiostomus xanthurus 12 Ballyhoo Hemiramphus brasiliensis 13 Mojarra Eugerres plumieri 14 Blue Runner Caranx crysos 15 Round Scad Decapterus punctatus 16 Goggle-Eye Selar crumenophthalmus 18 Atlantic Menhaden Brevoortia tyrannus 19 Scaled Sardine Harengula jaguana 20 Atlantic Threadfin Opisthonema oglinum 21 Spanish Sardine Sardinella aurita 22 Tomtate Haemulon aurolineatum 23 Sand Perch Diplectrum formosum 24 Bay Anchovy Anchoa mitchilli 25 References 29 Example of Marine Baitfish Culture: Pinfish ABOUT Florida’s recreational fishery has a $7.5 billion annual economic impact—the highest in the United States. In 2006 Florida’s recreational saltwater fishery alone had an economic impact of $5.2 billion and was responsible for 51,500 jobs.

Despite Florida’s status as a premier fishing location, only two of the 257 baitfish farms recorded in the 2005 USDA Census of Aquaculture were located in Florida. Since 2005 about 10 new marine baitfish farms have been added, but this disparity clearly illustrates the potential for expansion and diversification of aquaculture within Florida to include marine baitfish production.

Today almost all marine baitfishes sold in stores are wild caught using nets and traps, making availability of most species seasonal despite a year-round demand. Marine baitfish produced by aquaculture could provide anglers with a consistent supply of sought-after species in desired sizes regardless of season, as well as potentially alleviate collection pressure on targeted wild populations.

Successful production and marketing of marine baitfish will require a business plan that includes production of multiple crops through controlled spawning during the off-cycle. A year-round supply would allow marketing of cultured baitfish when the wild supply is limited so that a premium price can be attained.

Substantial research to evaluate the aquaculture potential of many species of marine baitfish suggests that some species have high aquaculture potential while others, for a variety of reasons, are less promising. You can learn more by reading the research and extension publications referenced at the end of this document, and by visiting the University of Florida/IFAS Indian River Research

and Education Center’s aquaculture website:

http://irrec.ifas.ufl.edu/aquaculture/index.html

–  –  –

Croaker are medium-sized, slightly elongate, moderately compressed, and silvery in color with a pinkish cast. The back and upper sides are grayish with black spots forming irregular, oblique lines above the lateral line. The dorsal fin has small black dots and a black edge; other fins are pale to yellowish. The chin has three to five pairs of barbels along the inner edge of the lower jaw. Atlantic croaker “croak” by vibrating their swim bladders with special muscles as part of their spawning ritual and when handled.

Range: The Atlantic croaker occurs in the northern and eastern parts of the Gulf of Mexico, along the Atlantic coast of the United States from south Massachusetts to Florida, in the Greater Antilles, and along the South American Atlantic coast from Surinam to Argentina. Its US fishing grounds extend from the Rio Grande to Tampa Bay in the Gulf of Mexico and from northern Florida to Cape Hatteras on the Atlantic coast. In Florida, Atlantic croaker are seldom found south of Tampa Bay in the Gulf of Mexico or the Indian River Lagoon on the Atlantic coast.

Habitat: Croaker are found over mud and sandy bottoms in coastal waters to about 3,300 feet (1,000 m) deep and in estuaries where their nursery and feeding grounds are located. Croaker can thrive in fresh water or sea water and in a wide range of temperatures 48–90°F (9–32°C); they are most abundant in waters over 75°F (24°C). Post-larval and juvenile Atlantic croaker occupy estuarine nursery areas where they feed on benthic plankton and invertebrates, such as grass shrimp and worms.

Size: Average 8 inches (20 cm), maximum 14 inches (36 cm) Bait use: Small croaker (2–3 inches, 5–7.5 cm) are used for flounder and spotted sea trout, with medium sizes (4–6 inches, 10–15 cm) appealing to redfish, snook, and piscivorous gamefish. Larger specimens (7–8 inches, 17.5–20 cm) are used offshore for grouper and snapper.

2 Aquaculture potential: Although the reproductive biology and spawning of wild-caught fish is well-documented, aquaculture methods for croaker are only partially known. Spawning occurs offshore in late summer, although they have been induced to spawn with hormones; females release 40,000–110,000 eggs.





Larval rearing regimes similar to red drum have been used with relatively good success. Newly hatched larvae can be cultured in tanks with phytoplankton and fed rotifers (Brachionus spp.) 3 to 12 days post hatch. Brine shrimp (Artemia sp.) can be added during days 10 to 12, as well as micro-particulate diets (250 µm particle size). Juveniles consume high protein (45%) formulated diets and exhibit rapid growth and survival. Wild juveniles grow rapidly, reaching 6–8 inches (15–20 cm) in the first year. Wild caught juveniles reared in cages in heated effluent (86°F, 30°C) and fed 45% protein formulated feed grew 0.6 inches (1.5 cm)/month. At that growth rate, a 1-inch (2.5 cm) croaker would reach 4 inches (10 cm) total length in 5 months.

Suggested reading Creswell, R.L., C.L. Ohs, and C. L. Miller. 2010. Candidate Species for Aquaculture: Croaker, Micropogonias undulatus. University of Florida, www.edis.ifas.ufl.edu/fa148.

–  –  –

Pinfish are compressed and oval, olive colored above, bluish-silver along the sides with thin yellow stripes running longitudinally. A dark shoulder spot occurs near the anterior origin of the lateral line. Six broad diffuse vertical dark bars occur along each side of the body, and these are most prominent in younger individuals and in individuals experiencing stress. The anal fin and the forked caudal fin are both yellowish with broad light blue margins.

–  –  –

Range: Pinfish inhabit the eastern coast of the United States from New England south to Florida (most abundant south of Virginia), Bermuda, the northern Gulf of Mexico, the northern coast of Cuba, and the Yucatán Peninsula. They are absent from the Bahamas and Antilles.

Habitat: Pinfish are found throughout estuaries and nearshore waters, typically in vegetated benthic habitats such as seagrass beds. The species is also commonly encountered on bare sand or rock reefs, mangrove habitats, and off of inlet jetties. Juveniles inhabit vegetated shallow estuaries and mangroves. Adults inhabit vegetated deeper channels, jetties, and offshore reefs. Pinfish tolerate water temperatures ranging from 50–95°F (10–35°C) and salinities 0–75 g/L.

Size: Average 3–5 inches (8–10 cm), maximum 12 inches (30 cm) Bait use: Popular bait for offshore bottom fishing. Pinfish ranging from 1.5–6.0 inches (3.75–15 cm) are frequently used by both inshore and offshore anglers to target a wide range of game fish. Arguably the most popular live bait in the southeastern US.

Aquaculture potential: Pinfish are a resilient, easy-to-maintain, fast-growing fish that tolerate a wide range of environmental conditions, and as such show great potential as a new aquaculture species with the purpose of being sold as marine baitfish. They tolerate high densities, reproduce in tanks, grow rapidly, and have established high-demand markets. Hormone injections are effective for ovulation and volitional spawning in pinfish; up to 90,000 eggs per female have been collected. Fertilized pinfish eggs have a single oil globule, a spherical yolk, and are buoyant in seawater. Eggs range in diameter from 0.90–1.05 mm. Pinfish larvae should be cultured at approximately 77°F (25°C) and fed rotifers, Branchionus sp., at first feeding (3 days post hatch) because they are small enough to be consumed. Rotifers should be fed to larvae at a density of 5–15 rotifers/mL from 3 to 21 days post hatch. Early juveniles have fully formed fins and range in size from 0.47–0.55 inches (12.0–13.9 mm). Pinfish grow rapidly and can reach a marketable size of 1.97–4.9 inches (5.0–12.5 cm) midway through their first year. Pinfish can grow 0.35–0.39 g/day with a mean survival of 94 to 99% over an 82 day growth period. Average food conversion ratio ranges from 1.7 to 1.9. Further studies in recirculating aquaculture systems, inland ponds, and low-salinity culture methods are needed to define the most appropriate culture techniques and protocols.

Suggested reading Ohs, C.L., M.A. DiMaggio, and S.W. Grabe. 2011. Species Profile: Pinfish, Lagodon rhomboides.

Southern Regional Aquaculture Center Publication Number 7210. 6 pp.

Ohs, C.L., S.W. Grabe, and M.A. DiMaggio. 2010. Candidate Species for Aquaculture: Pinfish, Lagodon rhomboides. University of Florida, www.edis.ifas.ufl.edu/fa168.

–  –  –

Killifish are stout-bodied, about one-fourth as deep as long. Their body is thickest just posterior of the pectoral fins. Both back and belly are rounded, and the top of the head is flat between the eyes and the snout. The mouth is at the tip of the snout and is so small that it does not gape back to the eye. The most striking feature of Fundulus is their very deep caudal peduncle and rounded caudal fin. Killifishes vary in shade from very pale to dark, according to the color of their surroundings. Out of breeding season the males are dark greenish or steel blue above, while the belly is white, pale yellow, or orange. The dorsal, anal, and caudal fins are dark green or dusky with pale mottling. The females are typically paler than the males and are more uniform in color.

Range: F. grandis—Florida to Vera Cruz, Mexico; F. heteroclitus—Gulf of St.

Lawrence to NE Florida; F. seminolis—throughout Florida, mostly inland areas.

Habitat: Fundulus spp. are recognized as hardy fish that tolerate a wide range of water temperatures and salinities. Found in shoals along sheltered shores where the tide flows over seagrass, tidal creeks that cut through salt marshes, on the shores of harbors, and in the brackish water at the mouths of streams and estuaries, particularly in little muddy pools, creeks, and ditches. As a group, they are very tolerant of low dissolved oxygen. Killifish are omnivorous, feeding on vegetation, plankton, and small crustaceans and mollusks, and occasionally eggs and small fish.

Size: Average 3 inches (8 cm), maximum 8 inches (20 cm) Bait use: These hardy fish are one of the most popular bait species for both marine and freshwater fishing. They are particularly popular as flounder bait.

–  –  –

Aquaculture potential: Considerable information is available on the technical aspects of Fundulus sp. culture. In addition, few perceived regulatory concerns or environmental impacts should limit continued development. However, economic issues appear to be a major impediment to commercial expansion.

Fundulus species are oviparous; fecundity is relatively low at 100 to 300 eggs per day over a 3 to 5 day spawning period for F. heteroclitus, depending on fish size, and lower with other Fundulus species. The timing and duration of the spawning seasons for the different species will vary based upon geographic location and water temperature parameters. Multiple spawns can be expected over the course of a spawning season. Eggs are attached to solid substrates for the incubation period of 7 to 21 days depending upon water temperature and salinity. A need exists for research on Fundulus culture in ponds and recirculating water systems, and egg incubation techniques.

Suggested reading Adams, C. and A. Lazur. 2001. Economic considerations for the prospective mudminnow culturist in Florida. University of Florida, www.edis.ifas.ufl.edu/fa309.

Anderson, J.A. and C.C. Green. 2013. Cacahoe minnow production manual. http://www.lsuagcenter.com/ en/crops_livestock/aquaculture/baitfish/minnows/Cocahoe-Minnow-Production-.htm.

DiMaggio, M.A., C.L. Ohs, S.W. Grabe, B.D. Petty, and A.L. Rhyne. 2010. Osmoregulatory evaluation of the Seminole killifish after gradual seawater acclimation. North American Journal of Aquaculture.

72(1):124-131.

–  –  –

Pigfish have long anal fins, matching the soft dorsal fin in shape and in size.

The head is sloped and pointed, the snout almost pig-like, and the lips thin. A background color of bluish-gray is marked with brassy spots in indistinct lines that are horizontal below the lateral line but extend obliquely upward and backward above the lateral line. These oblique markings are also found on the cheeks. The head is covered with bronze spots, and the fins are yellowish bronze with dusky margins. The name pigfish was probably derived from the chattering noises they make when caught. Like other members of the grunt family, a pigfish makes a grunting sound by rubbing the teeth in their throat together. Pigfish also use these pharyngeal teeth to grind up shellfish and small bits of other food.

Range: Pigfish inhabit the Atlantic coast of the United States from New York to the northern Bahamas and Bermuda, but are less common north of Virginia.

They are also found in the Gulf of Mexico from Florida to the Yucatán peninsula.



Pages:   || 2 | 3 | 4 | 5 |


Similar works:

«ADRODDIAD BLYNYDDOL / ANNUAL REPORT 1981-82 MAXWELL FRASER BEQUEST & TREFIN ARCHDDERWYDD CYMRU BEQUEST 1982001 Ffynhonnell / Source The late Maxwell Fraser (Mrs Edgar Phillips), Slough, Berkshire. Blwyddyn / Year Adroddiad Blynyddol / Annual Report 1981-82 Disgrifiad / Description A brief description of this bequest appeared in last year's Annual Report. It consists of the manuscripts and papers of Maxwell Fraser (1902-80), authoress and travel writer, and of her husband, Edgar Phillips...»

«iOS Auto Layout Demystified Erica Sadun Upper Saddle River, NJ • Boston • Indianapolis • San Francisco New York • Toronto • Montreal • London • Munich • Paris • Madrid Cape Town • Sydney • Tokyo • Singapore • Mexico City Many of the designations used by manufacturers and sellers to distinguish their products Editor-in-Chief are claimed as trademarks. Where those designations appear in this book, and the pubMark Taub lisher was aware of a trademark claim, the...»

«Participatory multi-criteria assessment for monitoring actions and supporting decision making to combat desertification in the San Simon watershed (Arizona) Item type text; Electronic Dissertation Authors Ocampo-Melgar, Anahi Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance)...»

«The Dog Who Loved a Queen (The Animal Stars Book 2) By Jackie French ISBN: 9780732285081 Publication Date: August, 2007 RRP: $14.99 Teaching Notes written by Christine Sarandis Book Description To the world outside her luxurious prison, Mary Queen of Scots is either a shameless beauty who killed her husband, or the rightful queen of England and Scotland, tragically held captive by Elizabeth the First. But to the dog who loved her, Mary is simply his mistress, and the centre of his life. While...»

«MARVIN’S ICE SHELF JOURNEY, 1906 Vivian C. Bushnell* T extent of the ice shelf along the north coast of Ellesmere Island became HE of considerable interest in 1952 when Fletcher’s Ice Island, T-3, was first occupied as a station for weather observations and geophysical studies by The United States Air Force. Aerial observations had shown the similarity between the surface features of the ice island and those of the ice shelf (Koenig et al., 1952). In order to make a thorough comparison of...»

«‘All the World’s a Stage’: Theatricality, ˆ Spectacle and the Flaneuse in Doris Lessing’s Vision of London ROSARIO ARIAS Abstract Doris Lessing has lived in London since she first arrived there in 1949, from Southern Rhodesia (now Zimbabwe). Lessing has always expressed her passion for the city of London, which has been turned into the setting for most of her novels and short stories. In addition, in her fictional and autobiographical texts the author reveals her love for...»

«Brain Gym’s Midline Movements Focus on two-sided (left-right) movement across the midline of the body. Development and/or properly functioning bilateral movement skills are important for crawling, walking, seeing depth, and are a prerequisite for whole-body coordination and ease of learning in the near-visual area. The Midline Movements help integrate binocular vision, binaural hearing, and the left and right sides of the brain. Over the last century, crawling has been used in neurological...»

«THE SOCIAL LIFE OF JAPAN’S ADOLECHNIC Todd Joseph Miles Holden INTRODUCTION This chapter addresses key themes of this book by offering insights into the world of Japanese adolescents. As the hybrid term adolechnic indicates, most Japanese youth make extensive use of communication technology. But do such technologies affect the rhythms and nature of their existence? For instance, does technological mediation enable youth to inhabit plural worlds? Does it bear on their socialization? And what...»

«The Peak Oil and Die-Off. Mat Savinar Part I: Introduction “Perhaps the sentiments contained in the following pages are not yet sufficiently fashionable to procure them general favor; a long habit of not thinking a thing wrong gives it a superficial appearance of being right, and raises at first a formidable outcry in defense of custom. But the tumult soon subsides. Time makes more converts than reason.” -Thomas Paine, Common Sense (1776) “For my part, whatever anguish of spirit it may...»

«Cognitive Ability and Strategic Sophistication∗ Jeffrey Carpenter† Michael Graham‡ Jesse Wolf§ October 31, 2012 Abstract In three experiments we examine the extent to which strategic sophistication (i.e., inductive reasoning, iterative dominance and level-k thinking) is determined by broader cognitive skills. In the first experiment we replicate previous results showing strong associations between cognitive ability and sophistication in a game of iterative dominance. We then extend the...»

«THE RECEPTION IN NINETEENTH-CENTURY ENGLAND OF CZECH LITERATURE AND OF THE CZECH LITERARY REVIVAL by JAMES DUNCAN NAUGHTON of Churchill College Dissertation submitted for the degree of Ph.D. at the University of Cambridge CAMBRIDGE 1977 Electronic version – Oxford, 2008 Ph.D. degree awarded 1978. This is an electronically scanned version of the author’s original typescript, with minor typographical adjustments, including endnotes converted to footnotes. Original page numbers are indicated...»

«Brno Studies in English Volume 38, No. 2, 2012 ISSN 0524-6881 DOI: 10.5817/BSE2012-2-10 Reviews Carol Berkenkotter, Vijay K. Bhatia and Maurizio Gotti (eds.): Insights into Academic Genres. Bern: Peter Lang, 2012. ISBN 978-3-0343-1211-0, 468 pp. Over the eleven years since its establishment in 2001, the series “Linguistic Insights” has won very positive recognition among scholars in various disciplines of linguistics. The series, issued by the publishing house Peter Lang and under the...»





 
<<  HOME   |    CONTACTS
2016 www.dissertation.xlibx.info - Dissertations, online materials

Materials of this site are available for review, all rights belong to their respective owners.
If you do not agree with the fact that your material is placed on this site, please, email us, we will within 1-2 business days delete him.