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- W2317368723 abstract "DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 101:23-31 (2012) - DOI: https://doi.org/10.3354/dao02506 Dermatitis and systemic mycosis in lined seahorses Hippocampus erectus associated with a marine-adapted Fusarium solani species complex pathogen Caroline E. Salter1, Kerry O’Donnell2, Deanna A. Sutton3, David P. Marancik1, Susan Knowles1, Tonya M. Clauss4, Aimee L. Berliner4, Alvin C. Camus1,* 1Department of Pathology, The University of Georgia College of Veterinary Medicine, Athens, Georgia 30602, USA 2Bacterial Foodborne Pathogens and Mycology Research Unit, National Center for Agricultural Utilization Research, US Department of Agriculture, Agricultural Research Service, Peoria, Illinois 61604, USA 3Department of Pathology, University of Texas Health Science Center, San Antonio, Texas 78229, USA 4Department of Veterinary Services, Georgia Aquarium, Inc., Atlanta, Georgia 30313, USA *Corresponding author. Email: camus@uga.edu ABSTRACT: During a 4 mo epizootic, 100% of 152 lined seahorses Hippocampus erectus in 3 separate groups died while in quarantine following shipment to a public aquarium. Twelve animals with skin depigmentation and ulceration were received by the Aquatic Pathology Service, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA, for diagnostic evaluation. Microscopically, lesions in 11 seahorses included multifocal epithelial necrosis and ulceration associated with 2 to 7 µm diameter, branching, septate fungal hyphae, typically accompanied by deeper infiltration into underlying skeletal muscle. Angioinvasion, with vascular thrombosis and tissue infarction, was a prominent feature in multiple animals. Fungal invasion of one or more internal organs was observed in 4 animals. Hyphae appeared to course freely through tissues and elicited little or no inflammatory response. Fusariosis has been reported sporadically in fish and other aquatic organisms, but identification has often been limited to the genus level based solely on morphologic features. Morphologic characteristics of the fungus isolated from this case were consistent with the Fusarium solani species complex (FSSC), which includes over 50 members that can only be identified definitively using DNA sequence data. A 3-locus typing scheme identified the isolate as a distinct species/haplotype, designated FSSC 12-a, belonging to a specific lineage that appears adapted to aquatic environments and disease in marine animals. Empirical treatment with itraconazole failed to stop mortalities, and subsequent in vitro antifungal susceptibility data explained a lack of clinical efficacy for this agent. Effective treatment in human medicine has similarly been limited by poor susceptibility to several classes of antifungal compounds. KEY WORDS: Seahorse · Fusarium · Mycosis · Histopathology · DNA typing · Phylogenetic analysis Full text in pdf format PreviousNextCite this article as: Salter CE, O’Donnell K, Sutton DA, Marancik DP and others (2012) Dermatitis and systemic mycosis in lined seahorses Hippocampus erectus associated with a marine-adapted Fusarium solani species complex pathogen. Dis Aquat Org 101:23-31. https://doi.org/10.3354/dao02506 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 101, No. 1. Online publication date: October 10, 2012 Print ISSN: 0177-5103; Online ISSN: 1616-1580 Copyright © 2012 Inter-Research." @default.
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- W2317368723 title "Dermatitis and systemic mycosis in lined seahorses Hippocampus erectus associated with a marine-adapted Fusarium solani species complex pathogen" @default.
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