ABSTRACT

The Indo-Pacific goniasterid sea star, Iconaster longimanus, undergoes planktonic lecithotrophic development without the bipinnaria stage, in equatorial waters at Singapore. The large (ca lmm) eggs develop into simplified pear shaped brachiolarias with a triplet of blunt brachiolar arms and lack bands of locomotory cilia. This developmental pattern is typical of asteroids with planktonic lecithotrophy but is infrequently reported for taxa at low latitudes.