Mysids were sampled seasonally from the intertidal
zone of the beach to a depth of 61 m offshore along the
mid-Oregon coast. The seven mysid species collected
occurred in characteristic bathymetric zones, with members
of different genera occupying overlapping zones
while members of the same genus occupied largely different
zones.
The distribution of one mysid species, Archaeomysis
grebnitzkii was examined in greater detail. Adult and
juvenile A. grebnitzkii were found to occupy different
zones. Juveniles occurred in the inner surf zone and
beach in high densities while adult animals were normally
found from the seaward edge of the surf zone
to 30 m in much lower densities. The mean brood size
of A. grebnitzkii was found to be 47.2, with larger
brood sizes occurring in early spring and summer
corresponding to larger body sizes of the breeding
females. / Graduation date: 1983
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28067 |
| Date | 04 November 1982 |
| Creators | Llewellyn, Janet George |
| Contributors | Holton, Robert L. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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