PERKEMBANGAN LARVA DALAM EMBRIOGENESIS KARANG Acropora HASIL PEMIJAHAN EX-SITU

Abstract

Fertilization and larval development determine the coral population survivalof species, which has a
difference characteristic of embryogenesis. This research wasaimed to compare the embryo and larval
development spawned in November 2011 in Grear Barrier Reef, Australia.Embryonic cellsdevelopment were
observed in interval timesfrom one cell of egg tomulticellular stage (prawnchip), and larval development
observed from the prawnchip stageto the planulae.The results showed the development of embryos and larvae
significantly differed between two species, i.e. embryos and larvae of Acropora millepora grew faster than
A.tenuis. The maximum size of planulae larvae of A. millepora (800-1000 μm) is biggerthan A. tenuis (650-900
μm). Embryo and larvae development were different due to species variability, hence this reseach can be
adapted for laboratory proccess of coral larvae nursery.
Keywords: embryo, planulae, Acropora millepora, A. Tenuis