DAO 112:207-217 (2015)  -  DOI: https://doi.org/10.3354/dao02803

Disease, parasite, and commensal prevalences for blue crab Callinectes sapidus at shedding facilities in Louisiana, USA

Holly A. Rogers1, Sabrina S. Taylor1, John P. Hawke2, Eric J. Schott3, Julie A. Anderson Lively1,*

1School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803, USA
2School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA
3IMET, University of Maryland Center for Environmental Science, Baltimore, Maryland 21202, USA
*Corresponding author:

ABSTRACT: Blue crab diseases, parasites, and commensals are not well studied in the Gulf of Mexico, and their prevalence rates have only been sporadically determined. Commercial soft shell shedding facilities in Louisiana experience high mortality rates of pre-molt crabs, and some of these deaths may be attributable to diseases or parasites. During the active shedding season in 2013, we determined the prevalence of shell disease, Vibrio spp., Lagenophrys callinectes, and Hematodinium perezi at 4 commercial shedding facilities along the Louisiana coast. We also detected Ameson michaelis and reo-like virus infections. Shell disease was moderately prevalent at rates above 50% and varied by shedding facility, collection month, and crab size. Vibrio spp. bacteria were prevalent in the hemolymph of 37% of the pre-molt crabs. Lagenophrys callinectes was highly prevalent in the pre-molt crabs, but because it is a commensal species, it may not cause high mortality rates. Hematodinium perezi was absent in all pre-molt crabs.


KEY WORDS: Shell disease · Vibrio · Lagenophrys · Reo-like virus · Callinectes sapidus · Molting


Full text in pdf format 
Cite this article as: Rogers HA, Taylor SS, Hawke JP, Schott EJ, Anderson Lively JA (2015) Disease, parasite, and commensal prevalences for blue crab Callinectes sapidus at shedding facilities in Louisiana, USA. Dis Aquat Org 112:207-217. https://doi.org/10.3354/dao02803

Export citation
Mail this link - Contents Mailing Lists - RSS
- -