Effects of early fouling communities formed in the field on settlement and metamorphosis of cyprids of the barnacle, Balanus amphitrite darwin
Titel:
Effects of early fouling communities formed in the field on settlement and metamorphosis of cyprids of the barnacle, Balanus amphitrite darwin
Auteur:
Tsurumi, Koichiro Fusetani, Nobuhiro
Verschenen in:
Biofouling
Paginering:
Jaargang 12 (1998) nr. 1-3 pagina's 119-131
Jaar:
1998-01
Inhoud:
Effects of early fouling communities formed in the field on cyprid settlement in the laboratory have been examined. Glass coverslips (18×18mm; total area 324 mm2) were placed daily, in a holder immersed 50 cm below the sea surface in Tokyo Bay and were collected on day 10. Each of the ten filmed coverslips, of successive growth stages, were placed in a polypropylene bottle containing 8 ml filtered seawater, into which ten cyprids were added. Bottles were incubated at 25°C in the dark, and juveniles on the coverslip were counted after 48 h. Film volumes were estimated by a confocal laser microscope equipped with a 3D image analyzer. Although films grew at different rates and in different fashions from experiment to experiment, they showed a similar pattern of induction of cyprid metamorphosis when the film volume was used as a parameter. The percentage metamorphosis increased as the film volumes increased, up to 0.1-1 μm3 μm-2, and decreased thereafter. Therefore, the film volume is most likely to influence cyprid settlement.
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