Laboratory rearing of barnacle larvae for antifouling research
© Biologischen Anstalt Helgoland 1970
1. A method has been developed for rearing large numbers of the larvae of the barnacleElminius modestus. At 20° C, frequent changing of the sea water medium treated with antibiotic allows 25 to 50% of the original larval population to settle and metamorphose to the adult stage.
2. The diatomSkeletonema costatum has been used as food source in a concentration of 5 × 105 cells/ml sea water.
3. The rearing temperature affects not only the rate of development but also the size of the larvae.
4. Constant illumination appears to provide optimum conditions for uniform rearing of larvae in large numbers.
5. Cyprids appear after approximately 7 days and settlement occurs about 3 days later.
6. In the laboratory, young adult barnacles will grow faster in flowing sea water than under static sea water conditions, even though supplementary food is added to the latter.