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- Title
Effects of food particle concentration on feeding current velocity in sex species of marine Bryozoa.
- Authors
Best, M.; Thorpe, J.
- Abstract
Experiments were carried out using established methods to measure feeding current velocity in six species of marine Bryozoa collected in 1982 and 1983 around low-tide mark at Port St. Mary, Isle of Man ( Flustrellidra hispida, Alcyonidium gelatinosum, A. hirsutum, Electra pilosa, Membranipora membranacea and Bowerbankia gracilis feeding on Tetraselmis suecica). It was found that there was a positive correlation between feeding current velocity and the concentration of food (phytoplankton) in the environment. It was also found that, at a fixed particle concentration, feeding current velocity was strongly correlated with lophophore height and (less strongly) with tentacle number. The competitive and evolutionary implications of these relationships are considered. It is tentatively suggested that interspecific competition for food may be of some significance in marine Bryozoa and that the removal of food supplies to competing colonies may play a role in colony overgrowth and competition for space.
- Subjects
PHYSICAL environment; FRESHWATER animals; PHYTOPLANKTON; BRYOZOA; ALCYONIDIUM; WATER currents; COMPETITION (Biology); BRYOZOA colonies
- Publication
Marine Biology, 1986, Vol 93, Issue 2, p255
- ISSN
0025-3162
- Publication type
Article
- DOI
10.1007/BF00508263