Molecular and pathological characterization of Fusarium solani species complex infection in the head and lateral line system of Sphyrna lewini

Diseases of Aquatic Organisms

Nantarika Chansue¹  Eric Lombardini¹  Somporn Techangamsuwan¹  Komsil Sahatrakul¹  Nopadon Pirarat¹  Sitthichok Lacharoje¹ 

关键词: Fusarium solani species complex 2;    Invasive fusariosis;    Lateral line system;    Sphyrna lewini;   

DOI  :  10.3354/dao03028

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: A severe fungal infection affecting the head and lateral line system was diagnosed in 7 captive scalloped hammerhead sharks Sphyrna lewini in an aquarium in Thailand. Extensive and severe necrotizing cellulitis was consistently observed microscopically along the cephalic and lateral line canals in conjunction with positive fungal cultures for Fusarium sp. Molecular phylogenetic analysis was performed from 3 isolates based on the nucleotide sequences containing internally transcribed spacer (ITS) and a portion of 5.8S and 28S rDNA. The fungus was highly homologous (100%) and closely related to F. solani species complex 2 (FSSC 2), which belongs to Clade 3 of the FSSC. Our results illustrate the histopathological findings and expand upon our knowledge of the prevalence of invasive fusariosis in the head and lateral line system of hammerhead sharks.

【 授权许可】

Unknown