Pectinid settlement on collectors in the Krka River Estuary
Abstract
Spat collector bags were suspended in the water at two week intervals from February 1987 to January 1988 in Šarina draga Bay. Eight spat collector bags filled with monofilament were suspended at 2.5 m intervals, at depth from 1 to 18.5 m above the sea bed. Collectors remained in the same position for three months.
Four Pectinids settled on the collectors: Chlamys varia L.; Chlamys (Flexopecten) flexuosus Poli; Chlamys (Aequipecten) opercularis L. and Pecten jacobaeus L. Only C. varia and P. jacobaeus were examined in this paper.
The intensive settlement of Chlamys varia occurred from June to August 1987, although settlement was recorded throughout the year. The spat maximum of 2451 per spat bag was found at a depth of 12.5 m. Pecten jacobaeus settled in high numbers from the end of March to the beginning of July 1987, with the maximum of 80 per spat bag at a depth of 15 m.
