STOCK STRUCTURE ANALYSIS OF Priacanthus hamrur (FORSSKAL, 1775) FROM INDIAN WATERS

The Moontail bullseye, Priacanthus hamrur, is an unusual species found in outer reef slopes and deep sea waters ranging from 8 m to at least 80 m, in small aggregations, sometimes schools in oceanic locations. Also found under ledges or hovering next to coral heads during the day. In the present study, 279 specimens were collected from Kakinada, Kolkata, Cochin and Mumbai to investigate the stock differentiation among the populations. A total of 14 morphometric traits, 11 landmark points with 14 truss variables and ten meristic counts were studied.

PCA of morphometric traits, first and second principal components explained the variation of 34.43% and 21.23% respectively. Factor analysis of truss variables revealed that shapes belonging to a middle portion of the body, dorsal fin, anal fin and caudal fin region, and head portion, are important in differentiating the stocks.

The clear separation of the stocks was observed between the four stocks. The discriminant function analysis of truss measurements within the stocks revealed correct classification of 82.16%. The current study will provide the baseline information on the stock characteristics of P. hamrur from Indian waters, and also it can be utilized for the sustainable management of this resource.