Record Details
The activity pattern of Diadora aspera
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | The activity pattern of Diadora aspera |
| Names |
Boese, Bruce Leon
(creator) McCauley, James E. (advisor) |
| Date Issued | 1975-03-05 (iso8601) |
| Note | Graduation date: 1975 |
| Abstract | Diadora aspera is an intertidal keyhole limpet found in the mid-tidal zone. Its activity pattern was estimated under laboratory conditions using time-lapse-photography and manometric determinations of oxygen consumption. Statistical and computer analyses of the photographic data suggest the presence of both a 24 hour and a 12-13 hour rhythm in activity. Both oxygen consumption and photographic data suggest that the diel rhythm has an activity peak at noon. The oxygen consumption data also suggest that the 12-13 hour rhythm in activity is peaked 3-4 hours before high tide. Protection from predation (possibly by Pycnopodia helianthoides) is suggested as a possible factor in selection for this phasing. |
| Genre | Thesis/Dissertation |
| Topic | Diadora aspera |
| Identifier | http://hdl.handle.net/1957/28571 |
