ix, 55 p. : ill., maps. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. / Aggressive behaviors in many animals increase juvenile survival and
reproductive success. I explored the role of aggressive behavior in maternal care and
male-male competition in caprellid amphipods. Attacks of females in three reproductive
states toward male and female conspecific and congeneric caprellids were quantified.
Parental females showed greatest aggression toward males of both species, suggesting
these caprellids may pose threats to juveniles. Paired males were exposed to females in
three reproductive states and other males and fought most often in the presence of nonbrooding
females. This finding suggests that males recognize and fight over receptive
females. Males fight with the second gnathopods and "poison tooth," which may cause
fatalities in conflicts. Mortality rates of males with and without (removed) poison teeth
were not significantly different, but the highest observed mortality rate was no-tooth caprellids when paired with toothed males, suggesting presence of the teeth may impact
the outcome of male-male conflicts.
| Identifer | oai:union.ndltd.org:uoregon.edu/oai:scholarsbank.uoregon.edu:1794/7984 |
| Date | 12 1900 |
| Creators | Matthews, Sara L., 1984- |
| Publisher | University of Oregon |
| Source Sets | University of Oregon |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
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