Ruth Francis-Floyd

0000-0003-4821-7826

Third Grade Manatee Curriculum—Lesson 14: Reviewing What We Know about Manatees

Maia McGuire and Ruth Francis-Floyd

Third Grade Manatee Curriculum—Lesson 4: Manatees Are Mammals; They Are Closely Related to Elephants

Ruth Francis-Floyd and Maia McGuire

Dissolved Oxygen for Fish Production

Ruth Francis-Floyd

This document is about dissolved oxygen (DO). DO refers to oxygen gas that is dissolved in water. Fish "breathe" oxygen just as land animals do. However, fish are able to absorb oxygen directly from the water into their bloodstream using gills, whereas land animals use lungs to absorb oxygen from the atmosphere. First published in 1992.

Third Grade Manatee Curriculum—Lesson 12: Pollution and Other Threats to Manatees

Maia McGuire and Ruth Francis-Floyd

Carp Edema Virus Disease (CEVD) / Koi Sleepy Disease (KSD)

Shohreh Hesami, Pedro Viadanna, Natalie Steckler, Staci Spears, Patrick Thompson, Karen Kelley, Roy Yanong, Ruth Francis-Floyd, Johnny Shelley, Joseph Groff, Andy Goodwin, Olga Haenen, and Thomas Waltzek

Carp edema virus disease is killing wild and cultured varieties of carp and worrying koi enthusiasts and carp aquaculturists in the United States and around the world. The disease causes skin lesions and swelling and is sometimes called “koi sleepy disease” because infected fish become lethargic and unresponsive. This 6-page fact sheet describes symptoms, diagnosis, prevention, and what fish producers, wholesalers, or retailers can do if they suspect carp may have contracted the disease.

Koi Herpesvirus Disease (KHVD)

Kathleen H. Hartman, Roy P.E. Yanong, Deborah B. Pouder, B. Denise Petty, Ruth Francis-Floyd, Allen C. Riggs, and Thomas B. Waltzek

Koi herpesvirus (KHV) is a highly contagious virus that causes significant morbidity and mortality in common carp varieties. Common carp is raised as a foodfish in many countries and has also been selectively bred for the ornamental fish industry where it is known as koi. The first recognized case of KHV occurred in the United Kingdom in 1996. Since then other cases have been confirmed in almost all countries that culture koi and/or common carp with the exception of Australia. This fact sheet is intended to inform veterinarians, biologists, fish producers and hobbyists about KHV disease.

Stress—Its Role in Fish Disease

Ruth Francis-Floyd

This document is Circular 919, one of a series of the School of Forest Resources and Conservation, Program in Fisheries and Aquatic Sciences, UF/IFAS Extension. Original publication date December 1990. Revised February 2015 and November 2018.

Third Grade Manatee Curriculum—Lesson 13: Manatee Migration Activity

Maia McGuire and Ruth Francis-Floyd

Third Grade Manatee Curriculum—Lesson 11: Biodegradable or Not?

Maxine Floyd, Maia McGuire, and Ruth Francis-Floyd

Diagnostic Methods for the Comprehensive Health Assessment of the Long-Spined Sea Urchin, Diadema antillarum

Ruth Francis-Floyd, Jan Landsberg, Roy Yanong, Yasu Kiryu, Shirley Baker, Deborah Pouder, William Sharp, Gabriel Delgado, Nicole Stacy, Tom Waltzek, Heather Walden, Roxanna Smolowitz, and Greg Beck

This 55-page document contains a wealth of information on the long-spined sea urchin, which is an important animal in coral reef ecosystems. The publication discusses diagnostic methods for Diadema antillarum and provides reporting forms for laboratory and diagnostic work.

Third Grade Manatee Curriculum—Lesson 18: Let's Have a Manatee Science Night!

Maia McGuire and Ruth Francis-Floyd

Third Grade Manatee Curriculum—Lesson 15: Collecting Data about Manatees

Maxine Floyd, Maia McGuire, and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 10: Summarizing What We Know about Cetaceans

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Third Grade Manatee Curriculum—Lesson 8: How Much Do Manatees Need to Eat?

Maia McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Streptococcal Infections of Fish

Roy P. E. Yanong and Ruth Francis-Floyd

Streptococcus is a genus of bacteria that includes some species that cause serious diseases in a number of different hosts. A major identifying feature of Streptococcus is that they are Gram-positive (they appear purple/blue when stained using a procedure called a Gram stain). By contrast, most of the common disease-causing bacteria of fish are Gram-negative (appear pink with a Gram stain). This is important when considering treatment options and will be discussed in greater detail below. First published Feb. 2002.

Cetaceans 4 Grade Curriculum—Lesson 4: How Big Are Cetaceans?

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Monogenean Parasites of Fish

Ruth Francis-Floyd, RuthEllen Klinger, Denise Petty, and Deborah Pouder

Monogeneans are a class of parasitic flatworms that are commonly found on fishes and lower aquatic invertebrates. Most monogeneans are browsers that move about freely on the fish’s body surface feeding on mucus and epithelial cells of the skin and gills; however, a few adult monogeneans will remain permanently attached to a single site on the host. Some monogenean species invade the rectal cavity, ureter, body cavity, and even the blood vascular system. Between 4,000 and 5,000 species of monogeneans have been described. They are found on fishes in fresh and saltwater, and in a wide range of water temperatures.

Third Grade Manatee Curriculum—Lesson 7: What Do Manatees Need to Survive?

Maia McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 7: How Do Whales Eat?

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Amonio en sistemas acuáticos

Ruth Francis-Floyd, Craig Watson, Denise Petty y Deborah B. Pouder.

De todos los parámetros de calidad de agua que afectana los peces, el amonio es el más importante después del oxígeno, especialmente en sistemas de cultivo intensivo. Aún en bajas concentraciones, el amonio provoca estrés y daña las branquias y otros tejidos de los peces. Los peces expuestos a niveles bajos de amonio a lo largo de un tiempo son más susceptibles a las infecciones bacterianas, presentan un crecimiento deficiente y no toleran el manejo de rutina tan bien como los peces cultivados en agua libre de amonio. En concentraciones altas, el amonio matará a los peces, y es probable que muchas pérdidas de producción inexplicables hayan sido causadas por amonio disuelto en el agua.

Third Grade Manatee Curriculum—Lesson 9: Manatees Need Warm Water to Survive

Maia McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 6: Cetacean Behaviors

Ruth Francis-Floyd and Maia Patterson McGuire

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Third Grade Manatee Curriculum—Lesson 5: Manatees and Their Cousins

Maia McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Use of Formalin to Control Fish Parasites

Ruth Francis-Floyd and Deborah B. Pouder

A UF/IFAS numbered Management.

Third Grade Manatee Curriculum—Lesson 16: Sharing What We Know about Manatees

Maia McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Third Grade Manatee Curriculum—Lesson 1: Starting to Learn about Manatees

Heather Maness, Ruth Francis-Floyd, and Maia McGuire

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 13: North Atlantic Right Whale Migration

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Third Grade Manatee Curriculum—Lesson 10: How Students Impact Their Environment

Maxine Floyd, Maia McGuire, and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 2: Cetaceans—What Makes a Whale a Whale?

Ruth Francis-Floyd and Maia Patterson McGuire

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 8: Food Chains

Maia Patterson McGuire, Brenda Cannaliato, and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Cryptobia iubilans in Cichlids

Ruth Francis Floyd and Roy Yanong

After many years of diagnostics at the University of Florida and at other laboratories around the country, it appears that Cryptobia iubilans is not uncommon among cichlids, and that environmental and other factors determine the extent of disease.

Cetaceans 4 Grade Curriculum—Outline

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 12: Identifying Individual North Atlantic Right Whales

Maia Patterson McGuire, Ruth Francis-Floyd, and Brenda Cannaliato

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Spring Viremia of Carp Virus (SVCv)

Barbara D. Petty, Ruth Francis-Floyd, Kathleen H. Hartman, and Roy P.E. Yanong

Spring viremia of carp is a viral disease that can cause significant mortality in several cyprinid species including all varieties of the common carp. It was reported in koi and feral carp in the United States for the first time in 2002. SVCV is a reportable pathogen to USDA. This revised 5-page fact sheet is intended to inform veterinarians, biologists, culturists, and hobbyists about Spring viremia of carp virus.

Third Grade Manatee Curriculum—Lesson 17: Exploring the Manatee's Habitat

Maia McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Ichthyophthirius multifiliis (White Spot) Infections in Fish

Ruth Francis-Floyd, Roy Yanong, and Deborah Pouder

Ichthyophthirius multifiliis (Ich) is a protozoan parasite that can cause severe losses in aquaculture and aquariums. It is introduced via new fish, substrates, plants, or equipment. Preventive measures include quarantining and treating new fish, holding plants without fish, and disinfecting decorations. Ich can cause rapid, high mortality among fish. Immediate treatment is necessary due to its fast reproduction. Since only the infective theront stage is susceptible to treatment, repeated treatments or prolonged salt use are required. Daily tank cleaning helps remove the parasite. Survivors can carry the parasite and reinfect others. This document is about how effective management and biosecurity practices, including quick treatment and multiple treatments during outbreaks, can help to control Ich and minimize economic losses. First published March 1991.

Cetaceans 4 Grade Curriculum—Lesson 14: How Do Right Whales Communicate?

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Current Aquaculture of the Eastern Oyster Crassostrea virginica and Its Potential for Innovative Technology in Florida

Emily Caffrey, Joshua Patterson, Ruth Francis-Floyd, and Roy P. E. Yanong

<p>This publication provides information on the status of oyster fisheries and aquaculture in Florida as well as general information about how oysters are grown in agricultural and restoration systems. It then introduces a series of technologies that have been developed in other US states and in other countries, strategies that may have utility in Florida. Finally, it covers some specifics of the permitting process as it relates to oyster aquaculture in Florida.</p>

Cetaceans 4 Grade Curriculum—Lesson 11: Introduction to Right Whales

Ruth Francis-Floyd and Maia Patterson McGuire

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Ammonia in Aquatic Systems

Ruth Francis-Floyd, Craig Watson, Denise Petty, and Deborah B. Pouder

Management of ammonia, the primary waste product of fish, is critical to fish health, especially in intensive systems. At low concentrations, ammonia causes stress and damages gills and other tissues. Fish exposed to low levels of ammonia over time are more susceptible to bacterial infections, have poor growth, and do not tolerate routine handling well. At higher concentrations, it will kill fish. Many unexplained production losses have likely been caused by ammonia.

Cetaceans 4 Grade Curriculum—Lesson 9: How Do Whales Stay Warm?

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Third Grade Manatee Curriculum—Introduction

Ruth Francis-Floyd and Maia McGuire

A UF/IFAS numbered Curriculum. Published by Youth development

The Use of Salt in Aquaculture

Ruth Francis-Floyd

Salt, also known as sodium chloride or NaCl, has many potential applications in fish production. It effectively controls some parasites, minimizes osmoregulatory stress during transport, and prevents methemoglobinemia (brown blood disease) in channel catfish. While the Food and Drug Administration (FDA) has not approved the use of salt in aquatic animals, FDA considers the use of salt in aquaculture to be of low regulatory priority. The agency does not regulate the use of salt to control salinity.

Cetaceans 4 Grade Curriculum—Lesson 5: Scientific Names—Understanding Where Those Funny Words Come from

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Submission of Fish for Diagnostic Evaluation

Natalie K. Stilwell, Roy P.E. Yanong, and Ruth Francis-Floyd

Submission of Fish for Diagnostic Evaluation

Third Grade Manatee Curriculum—Lesson 3: Manatee Adaptations

Alexis Morris, Maia McGuire, and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 18: Bringing It All Together

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 17: How Can We Reduce Threats to North Atlantic Right Whales?

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

A Guide to Nesting Sea Turtles in Florida

Analisa Duran, Ruth Frances-Floyd, Maia Patterson Mcguire, and Iskande Larkin

Florida’s coastline provides critical habitat for sea turtle nesting, as it has for millions of years. Throughout the state, three of the seven species of sea turtles in the world have significant nesting populations. Loggerhead, green, and leatherback sea turtles use Florida’s beaches to lay nests each year. This publication provides information on the identification, nesting characteristics, and abundance of each of the common sea turtle species who nest in Florida.

Cetaceans 4 Grade Curriculum—Lesson 1: Starting to Learn about Whales

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Third Grade Manatee Curriculum—Lesson 6: What Do Animals Need to Survive?

Alexis Morris, Maia McGuire, and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Introducción al manejo de la salud de los peces

Ruth Francis-Floyd y Juan Manuel Campos Krauer

El manejo de la salud de los peces es un término utilizado en acuicultura para describir las prácticas de manejo que están diseñadas para prevenir las enfermedades de los peces. Una vez que los peces se enferman, puede ser difícil salvarlos. El manejo exitoso de la salud de los peces comienza con la prevención de las enfermedades, en lugar de aplicar un tratamiento. La prevención de las enfermedades de los peces se logra mediante un buen control de la calidad del agua, nutrición y saneamiento. Sin esta base, es imposible prevenir brotes de enfermedades que son oportunistas.

Third Grade Manatee Curriculum—Lesson 2: Reading Rainbow, "Sam the Sea Cow"

Maia McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum. in support of UF/IFAS Extension program: Youth development

Cetaceans 4th Grade Curriculum—Lesson 16: North Atlantic Right Whales and Ship Strikes

Maia Patterson McGuire, Jessica Hardy, Brenda Cannaliato, and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). Published by Youth development

Fish Nutrition

Ruth Francis-Floyd

A UF/IFAS numbered Fact Sheet for Commercial audience(s). in support of UF/IFAS Extension program: Aquaculture

Cetaceans 4 Grade Curriculum—Lesson 15: Technology and North Atlantic Right Whales

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development

Cetaceans 4 Grade Curriculum—Lesson 3: Researching Individual Whale and Dolphin Species

Maia Patterson McGuire and Ruth Francis-Floyd

A UF/IFAS numbered Curriculum for 4-H/Youth audience(s). in support of UF/IFAS Extension program: Youth development