Host susceptibility hypothesis for shell disease in American lobsters
Tlusty, Michael F.
Smolowitz, Roxanna M.
Halvorson, Harlyn O.
DeVito, Simone E.
MetadataShow full item record
Epizootic shell disease (ESD) in American lobsters Homarus americanus is the bacterial degradation of the carapace resulting in extensive irregular, deep erosions. The disease is having a major impact on the health and mortality of some American lobster populations, and its effects are being transferred to the economics of the fishery. While the onset and progression of ESD in American lobsters is undoubtedly multifactorial, there is little understanding of the direct causality of this disease. The host susceptibility hypothesis developed here states that although numerous environmental and pathological factors may vary around a lobster, it is eventually the lobster's internal state that is permissive to or shields it from the final onset of the diseased state. To support the host susceptibility hypothesis, we conceptualized a model of shell disease onset and severity to allow further research on shell disease to progress from a structured model. The model states that shell disease onset will occur when the net cuticle degradation (bacterial degradation, decrease of host immune response to bacteria, natural wear, and resorption) is greater than the net deposition (growth, maintenance, and inflammatory response) of the shell. Furthermore, lesion severity depends on the extent to which cuticle degradation exceeds deposition. This model is consistent with natural observations of shell disease in American lobster.
Author Posting. © American Fisheries Society, 2007. This article is posted here by permission of American Fisheries Society for personal use, not for redistribution. The definitive version was published in Journal of Aquatic Animal Health 19 (2007): 215-225, doi:10.1577/H06-014.1.
Suggested CitationJournal of Aquatic Animal Health 19 (2007): 215-225
Showing items related by title, author, creator and subject.
Distinct influence of air–sea interactions mediated by mesoscale sea surface temperature and surface current in the Arabian Sea Seo, Hyodae (American Meteorological Society, 2017-09-08)During the southwest monsoons, the Arabian Sea (AS) develops highly energetic mesoscale variability associated with the Somali Current (SC), Great Whirl (GW), and cold filaments (CF). The resultant high-amplitude anomalies ...
Influences of Pacific climate variability on decadal subsurface ocean heat content variations in the Indian Ocean Jin, Xiaolin; Kwon, Young-Oh; Ummenhofer, Caroline C.; Seo, Hyodae; Schwarzkopf, Franziska U.; Biastoch, Arne; Böning, Claus W.; Wright, Jonathon S. (American Meteorological Society, 2018-04-30)Decadal variabilities in Indian Ocean subsurface ocean heat content (OHC; 50–300 m) since the 1950s are examined using ocean reanalyses. This study elaborates on how Pacific variability modulates the Indian Ocean on decadal ...
ten Brink, Uri S.; Danforth, William W.; Polloni, Christopher; Andrews, Brian D.; Llanes, Pilar; Smith, Shepard; Parker, Eugene; Uozumi, Toshihiko (American Geophysical Union, 2004-09-14)The Puerto Rico Trench, the deepest part of the Atlantic Ocean, is located where the North American (NOAM) plate is subducting under the Caribbean plate (Figure l). The trench region may pose significant seismic and tsunami ...