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A new species of Henneguya (myxozoa) in the big-eyed scad (Selar crumenophthalmus) from Hawaii

Journal of Parasitology

By:
, , ,
DOI: 10.1645/GE-1385.1

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Abstract

We describe a new myxozoan, Henneguya akule n. sp., infecting the carangid fish Selar crumenophthalmus in Hawaii. Spores were found only in the aortic bulb, characterized by elliptical capsule with 2 tails, and pyriform polar capsules that angled toward the anterior end of the spore. Polar filaments had 3-4 coils. Parasites were present in apparently healthy fishes and caused no evident gross pathology. On microscopy, parasites evinced a mild inflammatory response in the host characterized by accumulations of eosinophilic fibrillar material around spores and a mononuclear infiltrate in the adventitia of the bulbus arteriosus. Overall prevalence was 20%, and prevalence between 2001 and 2006 ranged from 12 to 27%, but did not differ significantly between years. In contrast, prevalence of infection was highest in south-central Oahu. There was no relationship between infection status and body condition or gender offish, and infection was absent in the smallest and largest fishes. Phylogenetically, H. akule n. sp. is most closely related to other Henneguya species infecting the heart of marine fishes based on ribosomal DNA analysis. This is the first documentation of a myxozoan parasite in marine fishes from Hawaii. ?? American Society of Parasitologists 2008.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A new species of Henneguya (myxozoa) in the big-eyed scad (Selar crumenophthalmus) from Hawaii
Series title:
Journal of Parasitology
DOI:
10.1645/GE-1385.1
Volume
94
Issue:
2
Year Published:
2008
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Parasitology
First page:
524
Last page:
529
Number of Pages:
6