The sediment was more terrigenous during the Planula
Zone, with a dominance of marly intervals over calcareous beds.
This polyp originates from a sexually produced planula
which, once settled, begins building a skeleton attached to the substrate.
At this stage planula
are mostly elongated and highly motile.
In contrast to their adult counterparts, swimming planula
larvae of most corals have not yet accumulated a high bacterial load from the surrounding environment or by feeding (Apprill et al, 2009; Sharp et al, 2010); as a result, it is more tractable to characterize and quantify the associated bacterial component in these larvae.
In the present study, we investigated the photosensory physiology of coral planula
tissue by using a microelectrode to record changes in its electrical potential when exposed to flashes of light.
Embryos develop into planula
larvae after 2-3 days.
larvae were allowed to attach to the underside of polystyrene petri dishes (9-cm diameter) floating on the water surface in the containers.
competence, and long-distance dispersal of planula
larvae of the coral Pocillopora damicornis.
They are characterized by (1) a distinctive arrangement of radially disposed septa (= mesenteries) and two rows of tentacles; (2) the lack of skeleton (except for the genus Savalia), with most species incorporating sand grains into their tissue; (3) a distinctive, modified planula
larva, either "zoanthella" or "zoanthina.
2] consumption of a single embryo or planula
(Okubo et al.
Efecto del acido giberelico y el metodo de siembra en la germinacion de semillas y crecimiento de planulas
de anona colorada (Annona reticulata L.
Sexual reproduction in solitary corals: Overlapping oogenic and brooding cycles, and benthic planulas
in Balanophyllia elegans.