Stock structure analysis of Priacanthus hamrur (Forsskal, 1775) along the Indian coast based on truss morphometry.

Abstract

The Moontail bullseye, Priacanthus hamrur is commonly found in the outer reef slopes and deep-sea waters. In small aggregations, sometimes it is found as 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 and 11 landmark points with 14 truss variables were studied. Factor analysis of different truss variables showed that shapes belonging to a middle portion of the body, anal fin, caudal fin, dorsal fin region and head portion play an important role in differentiating the stocks. All four stocks are separated in the present study. Correct classification of 82.16% is shown by discriminant function analysis of truss measurements within the stocks. The present study can provide in formation for formulating different management strategies leading to sustainable management of this resource along the Indian coast.