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Fleas and Ticks Minimize

Fleas and Ticks 1

P.G. Koehler and J.L. Castner2

Fleas and ticks are the most important external parasites of pets, livestock and humans. Both fleas and ticks are very abundant, have irritating bites and can transmit disease. Fleas can transmit tapeworms. Ticks can transmit Lyme disease, Rocky Mountain spotted fever and relapsing fever. Lyme disease is transmitted in the Northern United States by the deer tick and in the Southern United States by the black legged, Gulf coast, American dog, lone star and relapsing fever tick. Lone star and American dog ticks can cause tick paralysis.

 

  • Cat flea, Ctenocephalides felis . The cat flea is the most important flea species in the United States and attacks both cats and dogs. Adults are 1/16" long and are usually found on the host. The flea inserts its mouthparts in the skin, injects saliva and sucks blood. The bite leaves a red spot on the skin. The saliva is irritating to the host, causing dermatitis and hair loss in allergic animals.

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  • Flea eggs and feces. Adult female fleas lay white, shiny eggs on the host. The eggs are not glued to the host, so they fall off immediately into bedding and other areas. Adult flea feces are also found in areas the animals frequent. Female fleas can produce 24 eggs per day, and eggs hatch in 12 to 48 hours.

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  • Flea larva. Larvae of fleas go through three stages in 10 to 14 days. They are about 1/4" long. Larvae prefer to feed on adult flea feces. They are mainly found in pet resting areas, both indoors and outdoors.

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  • Flea cocoons. Flea larvae pupate within silken cocoons and change into the adult stage. Debris is incorporated into the cocoon, so they are difficult to find. Fleas can remain in the pupal stage for six to 12 months without a host. They are protected from insecticides and resist chemical treatments.

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  • American dog tick, Dermacentor variabilis, (male, left; female, right). This tick is one of the most prevalent tick pests in the Eastern United States. Adults are about 1/4" long, and the shield has variable white markings. The larvae and nymphs prefer to feed on mice. Adults prefers dogs and other large animals.

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  • Brown dog tick, Rhipicephalus sanguineus, (male, left; female, right). This tick is one of the most common pests of dogs. Adults are 3/16" long and are uniformly reddish-brown. All stages prefer to feed on dogs. This tick is prevalent in houses and kennels.

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  • Gulf coast tick, Amblyomma maculatum, (male, left; female, right). This tick is very prevalent in the Southeastern United States. The sexes are very different in appearance. The immature stages feed on ground-dwelling birds. Adults attach primarily to the ears of large animals such as deer and cattle.

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  • Lone star tick, Amblyomma americanum, (male, left; female, right). This tick is one of the most common ticks on humans and it has prevented the development of some areas. The female has a silvery spot on the dorsal shield. Its long mouthparts allow deep penetration of the skin, often causing pus sores.

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  • Black legged tick, Ixodes scapularis, (male, left; female, right). This tick is widespread in the Southeastern United States, and often is found along trails, paths and roadways. Adult ticks are dark reddish-brown with dark-brown to black legs.

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  • Relapsing fever tick, Ornithodorus turicata, (male, left; female, right). The relapsing fever tick is a soft tick, and its mouthparts are not visible from above. The relapsing fever tick mainly attacks rodents, and consequently is associated with rat and mouse habitats. It can transmit tick-borne relapsing fever.

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Footnotes

1. This document is SP 95, one of a series of the Department of Entomology and Nematology, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. This document is available for sale as a high-quality, color publication. For ordering information or to order using VISA or MasterCard, call 1-800-226-1764. Date first printed: May 1991 as ENY-509. Reviewed: June 2008. Please visit the EDIS Website at http://edis.ifas.ufl.edu.

2. P.G. Koehler, professor; J.L. Castner, scientific photographer; Department of Entomology and Nematology, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, 32611. The term plates, where used in this document, refers to color photographs that can be displayed on screen from EDIS. These photographs are not included in the printed document.


The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other extension publications, contact your county Cooperative Extension service.

U.S. Department of Agriculture, Cooperative Extension Service, University of Florida, IFAS, Florida A. & M. University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Larry Arrington, Dean.


 


Copyright Information

This document is copyrighted by the University of Florida, Institute of Food and Agricultural Sciences (UF/IFAS) for the people of the State of Florida. UF/IFAS retains all rights under all conventions, but permits free reproduction by all agents and offices of the Cooperative Extension Service and the people of the State of Florida. Permission is granted to others to use these materials in part or in full for educational purposes, provided that full credit is given to the UF/IFAS, citing the publication, its source, and date of publication.
 

  

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