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vol. 156, no. 3 the american naturalist september 2000 Allocation to Mate Guarding or Increased Sperm Production
 

Summary: vol. 156, no. 3 the american naturalist september 2000
Allocation to Mate Guarding or Increased Sperm Production
in a Mediterranean Wrasse
Suzanne H. Alonzo1,* and Robert R. Warner2,
1. Department of Environmental Studies, University of California,
Santa Cruz, California 95064;
2. Department of Ecology, Evolution and Marine Biology,
University of California, Santa Barbara, California 93106
Submitted November 8, 1999; Accepted May 2, 2000
abstract: An excellent body of literature exists that examines sperm
expenditure when males allocate only to sperm production. However,
in many species, males can also allocate energy to behaviors that in-
fluence sperm competition. We model whether males in sperm com-
petition should allocate energy to mate guarding or additional sperm
production. Mate guarding is predicted to lead to greater reproductive
success than increased sperm output, and mate-guarding males are not
predicted to alter their allocation to sperm production with increasing
sperm competition. Only when mate guarding is ineffective or greatly
reduces sperm production are males predicted to allocate to sperm
production. In a Mediterranean wrasse Symphodus ocellatus, three male

  

Source: Alonzo, Suzanne H. - Department of Ecology and Evolutionary Biology, Yale University

 

Collections: Environmental Sciences and Ecology; Biology and Medicine