NDLI: Co-infection by alveolate parasites and frog virus 3-like ranavirus during an amphibian larval mortality event in Florida, USA.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Landsberg, Jan H. Kiryu, Yasunari Tabuchi, Maki Waltzek, Thomas B. Enge, Kevin M. Reintjes-Tolen, Sarah Preston, Asa Pessier, Allan P.
Spatial Coverage	Florida
Description	Country affiliation: United States Author Affiliation: Landsberg JH ( Florida Fish and Wildlife Conservation Commission, St. Petersburg, FL 33701, USA. jan.landsberg@myfwc.com)
Abstract	A multispecies amphibian larval mortality event, primarily affecting American bullfrogs Lithobates catesbeianus, was investigated during April 2011 at the Mike Roess Gold Head Branch State Park, Clay County, Florida, USA. Freshly dead and moribund tadpoles had hemorrhagic lesions around the vent and on the ventral body surface, with some exhibiting a swollen abdomen. Bullfrogs (100%), southern leopard frogs L. sphenocephalus (33.3%), and gopher frogs L. capito (100%) were infected by alveolate parasites. The intensity of infection in bullfrog livers was high. Tadpoles were evaluated for frog virus 3 (FV3) by histology and PCR. For those southern leopard frog tadpoles (n = 2) whose livers had not been obscured by alveolate spore infection, neither a pathologic response nor intracytoplasmic inclusions typically associated with clinical infections of FV3-like ranavirus were noted. Sequencing of a portion (496 bp) of the viral major capsid protein gene confirmed FV3-like virus in bullfrogs (n = 1, plus n = 6 pooled) and southern leopard frogs (n = 1, plus n = 4 pooled). In July 2011, young-of-the-year bullfrog tadpoles (n = 7) were negative for alveolate parasites, but 1 gopher frog tadpole was positive. To our knowledge, this is the first confirmed mortality event for amphibians in Florida associated with FV3-like virus, but the extent to which the virus played a primary role is uncertain. Larval mortality was most likely caused by a combination of alveolate parasite infections, FV3-like ranavirus, and undetermined etiological factors.
File Format	HTM / HTML
ISSN	01775103
e-ISSN	16161580
Journal	Diseases of Aquatic Organisms
Issue Number	2
Volume Number	105
Language	English
Publisher	Federal Republic of Germany : Inter-Research
Publisher Date	2013-07-22
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Discipline Veterinary Medicine Discipline Biology Alveolata Isolation & Purification Dna Virus Infections Veterinary Protozoan Infections, Animal Parasitology Ranavirus Ranidae Virology Animals Epidemiology Mortality Florida Larva Research Support, U.s. Gov't, Non-p.h.s.
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics

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