Abstract
Abstract: Dorsal and anal fin deformities in the blue tang Acanthurus coeruleus are reported for the first time from northeastern Brazil, based on observations during research dives at an artificial reef. Possible causative factors are discussed.
Highlights
The first records of deformities in bony fish were documented on the 16th century (Gudger 1929, 1934, Berra and Au 1981)
Among the morpho-anatomical deformities observed in fish, fins anomalies are the most severe, because fin development is an important feature from early life history and it is closely correlated with changes in swimming mode, swimming velocity and feeding strategies and preferences (Kendall et al 1984, Blaxter 1988, Fukuhara 1992)
In order to contribute to the growing literature about deformities of fishes, this study reports one blue tang Acanthurus coeruleus (Bloch and Schneider 1801) displaying an unusual lunate concavity in the dorsal and anal fins, as well as a pronounced caudal peduncle morphology (Figure 1, Supplementary Information – Video S1) from Paraíba state, northeastern Brazil
Summary
The first records of deformities in bony fish were documented on the 16th century (Gudger 1929, 1934, Berra and Au 1981). Many teratology occurrences have been reported in different fish taxa (Lodi 1978, Lemly 2002, Boglione et al 2006, Al-Mamry et al 2010, Nagamuthu et al 2014). Among the morpho-anatomical deformities observed in fish, fins anomalies are the most severe, because fin development is an important feature from early life history and it is closely correlated with changes in swimming mode, swimming velocity and feeding strategies and preferences (Kendall et al 1984, Blaxter 1988, Fukuhara 1992).
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