Batrachochytrium dendrobatidis in natural and farmed Louisiana crayfish populations: prevalence and implications

Brannelly, Laura A., McMahon, Taegan A., Hinton, Mitchell, Lenger, Daniel, and Richards-zawacki, Corinne L. (2015) Batrachochytrium dendrobatidis in natural and farmed Louisiana crayfish populations: prevalence and implications. Diseases of Aquatic Organisms, 112 (3). pp. 229-235.

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View at Publisher Website: http://dx.doi.org/10.3354/dao02817
 
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Abstract

The pathogenic chytrid fungus Batrachochytrium dendrobatidis (Bd) has been linked to global declines and extinctions of amphibians, making it one of the most devastating wildlife pathogens known. Understanding the factors that affect disease dynamics in this system is critical for mitigating infection and protecting threatened species. Crayfish are hosts of this pathogen and can transmit Bd to amphibians. Because they co-occur with susceptible amphibian communities, crayfish may be important alternative hosts for Bd. Understanding the prevalence and seasonal dynamics of crayfish infections is of agricultural and ecological interest in areas where crayfish are farmed and traded for human consumption. We conducted a survey of Bd in farmed and natural crayfish (Procambarus spp.) populations in Louisiana, USA. We found that Bd prevalence and infection intensity was low in both farmed and native populations and that prevalence varied seasonally in wild Louisiana crayfish. This seasonal pattern mirrors that seen in local amphibians. As crayfish are an important globally traded freshwater taxon, even with low prevalence, they could be an important vector in the spread of Bd.

Item ID: 37863
Item Type: Article (Refereed Research - C1)
Keywords: alternative hosts, aquaculture, Batrachochytrium dendrobatidis, enzootic, invasive species, Procambarus clarkii
ISSN: 1616-1580
Date Deposited: 17 Mar 2015 15:59
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070205 Animal Protection (Pests and Pathogens) @ 50%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0707 Veterinary Sciences > 070704 Veterinary Epidemiology @ 50%
SEO Codes: 96 ENVIRONMENT > 9604 Control of Pests, Diseases and Exotic Species > 960406 Control of Pests, Diseases and Exotic Species in Fresh, Ground and Surface Water Environments @ 50%
96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960805 Flora, Fauna and Biodiversity at Regional or Larger Scales @ 50%
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