her own experiments that
Tubas-trea larvae use light sensitivity to
orient themselves and find an
adequately dark area where they
won’t be rapidly overgrown by
zooxanthellate competitors for
space. Once a larva had settled,
Daniela positioned a light source
above it and within a few seconds, it released itself from the
substrate in order to drift away.
This behavior was repeatable, so
coincidence can be excluded.
An international research
team has established during research in the Dutch Antilles that
the larvae of certain species of
corals accomplish this with the
aid of acoustic orientation, quite
simply by detecting oscillations
in the sounds produced by fishes
and crustaceans. The scientists
are afraid that the sexual reproduction of corals may be increasingly adversely affected by the
noise of shipping traffic.
—Daniel Knop ReefLine_HP_ 6. 63 x 4. 56_Coral.OL.pdf 1 10/21/10 10: 53 AM