The garibaldi, Hypsypops rubicundus, is a sexually
monochromatic pomacentrid found in rocky subtidal areas of
Southern and Baja California. During the spawning season,
males attempt to attract females to a nest of red algae
located within individually defended territories. Females
were observed to enter the nests of several males before
selecting one for spawning and were significantly more
likely to spawn in nests that contained eggs in the early
stages of development than nests with no eggs or with late
stage embryos. Among empty nests, the density of red turf
algae and the number of nesting males surrounding the nest
were inversely related to the amount of time elapsed until
a nesting male acquired the first clutch of a brood. The
percentage of long algae in the nest was positively related
to this measure. These results demonstrate active female
choice of spawning site by female garibaldi and suggest
that certain characteristics of the male-defended nest
influence this choice. / Graduation date: 1991
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/37669 |
| Date | 09 May 1990 |
| Creators | Sikkel, Paul C. |
| Contributors | Coblentz, Bruce E. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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