Hydrobiologia

, Volume 127, Issue 2, pp 105–115

The effect of phytoplankton and suspended sediment on the growth of Corbicula fluminea (Bivalvia)

  • Christopher Foe
  • Allen Knight
Article

DOI: 10.1007/BF00004190

Cite this article as:
Foe, C. & Knight, A. Hydrobiologia (1985) 127: 105. doi:10.1007/BF00004190

Abstract

Juvenile Corbicula fluminea Müller (1774) were cultured at 15.3 °C in the laboratory on eight combinations of suspended sediment and phytoplankton. Sediment concentrations were 2.6, 25, 50, and 150 mg l−1. Chlorophyll a levels were 15.6 and 62.5 µg l−1. Clam tissue growth was found to be independent of silt concentration but increased at the higher chlorophyll level (p < 0.05). The growth experiment was repeated at 24 °C with chlorophyll a concentrations of 18.9 and 112.6 µg l−1. Growth was again greater at the higher phytoplankton level (p < 0.05). These results demonstrate that Asiatic clam populations are food-limited most of the growing season in the Northern and Western portions of California's eutrophic Sacramento-San Joaquin Delta where chlorophyll a levels average less than the lower of these values. Comparisons of clam growth in the laboratory and estuary support the food limitation hypothesis as at the higher food concentration laboratory tissue growth was 2.3 and 3.8 times greater during the high and low temperature evaluations than in the estuary.

Keywords

Corbicula inorganic particle selection food limitation phytoplankton growth bivalvia 

Copyright information

© Dr W. Junk Publishers 1985

Authors and Affiliations

  • Christopher Foe
    • 1
  • Allen Knight
    • 1
  1. 1.Land, Air and Water ResourcesUniversity of California, DavisDavisU.S.A.