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Abstract
The capsalid monogenean Neobenedenia melleni is known as a lethal pathogen for captured marine teleost ornamental fish, if left untreated. This study reports the occurrence of N. melleni parasitizing four species of ornamental reef fish imported into Brazil and maintained in quarantine: Arabian angelfish (Pomacanthus asfur ), yellowbar angelfish (Pomacanthus maculosus), regal angelfish (Pygoplites diacanthus), and bluecheek butterflyfish (Chaetodon semilarvatus). Ten days after the beginning of quarantine, some fish showed behavioral alterations, such as irritability, and corneal opacity, which were rapidly diagnosed to be caused by monogenean parasites by body surface scraping. The fish from the same batch were treated with two applications of 2 mg L-1 praziquantel each at an interval of four days. Seven days after the first treatment, the mucus surface of the fish was re-examined, which did not reveal the parasites presence being delivered for commercialization.
Highlights
Ornamental fish trade is characterized by the aggregation of fish species from several countries
This study reports the occurrence of N. melleni parasitizing four species of ornamental reef fish imported into Brazil and maintained in quarantine: Arabian angelfish (Pomacanthus asfur), yellowbar angelfish (Pomacanthus maculosus), regal angelfish (Pygoplites diacanthus), and bluecheek butterflyfish (Chaetodon semilarvatus)
The present study reports the occurrence of N. melleni after a stress period of transport of four ornamental reef fish imported into Brazil, Arabian angelfish (Pomacanthus asfur), yellowbar angelfish (Pomacanthus maculosus), regal angelfish (Pygoplites diacanthus) and bluecheek butterflyfish (Chaetodon semilarvatus)
Summary
Ornamental fish trade is characterized by the aggregation of fish species from several countries. More than 1,450 marine fish species are commercialized as ornamental fish and approximately 90% of them are captured from the nature. Monogeneans are Platyhelminthes parasites normally found in fish and lower invertebrates. Four are frequently diagnosed in farmed fish as Gyrodactylidae, Dactylogyridae, Ancyrocephalidae, and Capsalidae.
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Schedule a callMore From: Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria
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