Prevalence of Panulirus argus Virus 1 (PaV1) and habitation patterns of healthy and diseased Caribbean spiny lobsters in shelter-limited habitats

Diseases of Aquatic Organisms

Juan Pablo Huchin-Mian¹  Patricia Briones-Fourzán¹  David Placencia-Sánchez¹  Aurora Ramírez-Estévez¹  Rossana Rodríguez-Canul¹  Enrique Lozano-Álvarez¹ 

关键词: Casitas;    Mexican Caribbean;    Panulirus argus Virus 1;    PaV1;    Prevalence;    Spiny lobster;   

DOI  :  10.3354/dao01921

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Caribbean spiny lobsters Panulirus argus are socially gregarious, preferring shelters harboring conspecifics over empty shelters. In laboratory trials, however, healthy lobsters strongly avoided shelters harboring lobsters infected with the highly pathogenic Panulirus argus Virus 1 (PaV1). Because PaV1 is transmitted by contact, this behavior may thwart its spread in wild lobsters. In a field experiment conducted from 1998 to 2002 in a shelter-poor reef lagoon (Puerto Morelos, Mexico), densities of juvenile P. argus increased significantly on sites enhanced with artificial shelters (casitas) but not on control sites. Because PaV1 emerged in this location during 2000, we re-examined these data to assess whether casitas could potentially increase transmission of PaV1. In 2001, PaV1 prevalence was 2.5% and the cohabitation level (percentage of healthy lobsters cohabiting with diseased lobsters) was similar between natural shelters (3.5%) and casitas (2.4%). The relative lobster densities in casita sites and control sites did not change significantly before (1998–1999) or after (2001–2002) the disease emergence. In late 2006, data from casita sites showed a significant increase in prevalence (10.9%) and cohabitation level (29.4%), but no significant changes in lobster density. In May 2006, casitas were deployed on shelter-poor sites within Chinchorro Bank, 260 km south of Puerto Morelos. In late 2006, prevalence and cohabitation level were 7.4 and 21.7%, respectively. Our results are inconclusive as to whether or not casitas increase PaV1 transmission, but suggest that across shelter-poor habitats, lobsters make a trade-off between avoiding diseased conspecifics and avoiding predation risk.

【 授权许可】

Unknown