Internal organ pathology of wild American lobster (Homarus americanus) from eastern Canada affected with shell disease
| Autor: | Michel Comeau, Kadra Benhalima |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Gill
Homarus education.field_of_study Ecology biology Population Vas deferens Zoology Aquatic animal American lobster Anatomy Aquatic Science biology.organism_classification medicine.anatomical_structure medicine Hepatopancreas Carapace education Ecology Evolution Behavior and Systematics Water Science and Technology |
| Zdroj: | New Zealand Journal of Marine and Freshwater Research. 43:257-269 |
| ISSN: | 1175-8805 0028-8330 |
| DOI: | 10.1080/00288330909509999 |
| Popis: | For the first time in decades, multiple lesions on the exoskeleton of wild caught American lobsters (Homarus americanus) were observed in eastern Canada in 2005 and 2006. These lesions were similar to those observed since the mid 1990s in the eastern United States. Of the 12 lobsters examined, 8 were males. Scanning electron microscopy showed a dense population of rod‐shaped bacteria associated with the breakdown of the first layer of cuticle. However, the ability of bacteria to fully penetrate the carapace is unknown. The shell disease did not seem to be immediately fatal and was often associated with alterations in the histoarchitecture of several internal organs (i.e., testis, vas deferens, hepatopancreas, and gills). For instance, follicle cells responsible for spermatogenesis were damaged, resulting in deformed and non‐viable spermatozoa in the testis and vas deferens. In contrast, the female reproductive organ did not show any abnormalities. R‐cells responsible for the storage of lipids and... |
| Databáze: | OpenAIRE |
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