Influences of Salinity and Desiccation on Development of First-Stage Larvae in the Egg of Eustrongylides ignotus and their Impact on the Epizootiology of Eustrongylides ignotus in Florida, U.S.A

Donald F. Coyner; Marilyn G. Spalding; Donald J. Forrester

doi:10.1654/4098

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Donald F. Coyner,^1,2 Marilyn G. Spalding,^1,3 Donald J. Forrester^1,*

¹aDepartment of Pathobiology, College of Veterinary Medicine, University of Florida, Gainesville, Flo
²bPresent address: Florida Fish and Wildlife Conservation Commission, 1239 S.W. 10th Street, Ocala, F
³crosie@nersp.nerdc.ufl.edu

^*Corresponding author. (forresterd@mail.vetmed.ufl.edu)

Abstract

Two experiments were conducted to study the influence of salinity and desiccation on the development of first-stage larvae in eggs of Eustrongylides ignotus. In cultures of low salinities (0, 10, and 20 parts per thousand [ppt]) 54% to 60% of the eggs contained first-stage larvae by day 90, but no development occurred in the eggs incubated in seawater (40 ppt). Development of eggs in cultures that were exposed to sunlight and allowed to dry down was ca. 1%, whereas 57% to 62% development occurred in cultures maintained in deionized water.

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Donald F. Coyner, Marilyn G. Spalding, and Donald J. Forrester "Influences of Salinity and Desiccation on Development of First-Stage Larvae in the Egg of Eustrongylides ignotus and their Impact on the Epizootiology of Eustrongylides ignotus in Florida, U.S.A," Comparative Parasitology 71(2), 262-263, (1 July 2004). https://doi.org/10.1654/4098

Published: 1 July 2004

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