Male expulsion in cooperative Mongolian gerbils (Meriones unguiculatus)

The "Challenge Hypothesis": Theoretical Implications for Patterns of Testosterone Secretion, Mating Systems, and Breeding Strategies

John C. Wingfield, Robert E. Hegner, Alfred M. Dufty et al. · The American Naturalist · 1990 · 2.3K citations

Reproductive Success: Studies of Individual Variation in Contrasting Breeding Systems

Raymond Pierotti, T. H. Clutton‐Brock · Ornithological Applications · 1989 · 1.1K citations · Full text

Breeding Behavior, Fertility, Fitness +16

Testis weight, body weight and breeding system in primates

Alexander H. Harcourt, Paul Harvey, Susan G. Larson et al. · Nature · 1981 · 987 citations

Primatology, Testis Weight, Body Size +6

Overt and covert competition in a promiscuous mammal: the importance of weaponry and testes size to male reproductive success

Brian T. Preston, Ian R. Stevenson, Josephine M. Pemberton et al. · Proceedings of the Royal Society B Biological Sciences · 2003 · 359 citations · Full text

Breeding Behavior, Fertility, Fitness +16

Mating Season Aggression and Fecal Testosterone Levels in Male Ring-Tailed Lemurs (Lemur catta)

Sonia A. Cavigelli, Michael E. Pereira · Hormones and Behavior · 2000 · 246 citations

Biology, Breeding Behavior, Reproduction Response +14