Treatment of a laboratory-based model of shell disease in hatchery raised American lobsters (Homarus americanus)
Epizootic shell disease in American lobsters, Homarus americanus H. Milne-Edwards, 1837, has been of special concern since the mid-1990s due to its impact on fisheries. Numerous studies have led to the present understanding that this disease has a polymicrobial etiology. However,
lacking in this research is exploration of the potential ways to ameliorate the disease. This is particularly important for public aquariums that have a strong focus on aesthetics and animal health. We performed two experiments to test short-term treatment methods on a laboratory-based model
of shell disease on juvenile American lobsters. A preliminary experiment tested the effects of Hikari® Biobandage, a commercially available product used for treating fish lesions, on early- and late-stage shell disease. Another experiment examined resulting shell disease when lobsters
were treated with distilled water, 10% povidone-iodine, d-alpha-tocopherol acetate (Vitamin E oil), formalin (100 ppm), and malachite green (5 ppm). We monitored the development of shell disease in both nonfacilitated and facilitated (in which the shell was damaged to induce disease) areas
of the shell to determine effectiveness up to ecdysis. Biobandage was not effective at limiting nonfacilitated shell disease or facilitated wounds. Fresh water exacerbated facilitated wounds in comparison to animals treated with povidone-iodine, formalin, and malachite green. Formalin and
malachite green treated lobsters showed the lowest severity of nonfacilitated shell disease. The study also showed that frequent handling alone (lobsters in control group) exhibited a higher amount of nonfacilitated shell disease. Identifying effective treatments in captive lobsters may provide
unique solutions for studying shell disease.
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Document Type: Research Article
Anderson Cabot Center for Ocean Life, New England Aquarium Central Wharf, Boston, Massachusetts 02110;, Email: [email protected]
Anderson Cabot Center for Ocean Life, New England Aquarium Central Wharf, Boston, Massachusetts 02110, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, San Diego, California 92093-0244
Anderson Cabot Center for Ocean Life, New England Aquarium Central Wharf, Boston, Massachusetts 02110
Anderson Cabot Center for Ocean Life, New England Aquarium Central Wharf, Boston, Massachusetts 02110, School for the Environment University of Massachusetts Boston, 100 Morrissey Blvd., Boston, Massachusetts 02125
Publication date: July 1, 2018
This article was made available online on May 25, 2018 as a Fast Track article with title: "Treatment of a laboratory-based model of shell disease in hatchery raised American lobsters (Homarus americanus)".
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The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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