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Animal Mating Systems: A Synthesis Based on Selection Theory
TLDR
It is argued that sexual selection gradients are the key to understanding how the intensity of sexual selection is affected by mate provisioning, parental investment, and sex ratio. Expand
EVOLUTION OF THE MATING SEASON IN THE PITVIPERS OF NORTH AMERICA
TLDR
The vitellogenic cycle of temperate zone pitvipers is proposed to be simply a modification of the viteLLogenic cycle seen in tropical pit vipers, with the major difference being the interruption of vitelliogenesis in temperate species by cold temperatures. Expand
Variation in oxygen consumption of the western diamondback rattlesnake (Crotalus atrox): implications for sexual size dimorphism
TLDR
Estimates of size-dependent maintenance expenditure lead it to hypothesize that adult female body size may represent a compromise between selection for increased litter size, and Selection for increased reproductive frequency, and, therefore inactive maintenance expenditure. Expand
AGGREGATION OF SQUAMATE REPTILES ASSOCIATED WITH GESTATION, OVIPOSITION, AND PARTURITION
TLDR
Mutual attraction to preferred habitat features as exhibited by gravid squamates may provide a useful model of early stages in the evolution of more complex social systems. Expand
Western fence lizard (Sceloporus occidentalis) chemical signals. I. Conspecific discriminations and release of a species‐typical visual display
TLDR
Western fence lizards, Sceloporus occidentalis, were exposed to markings, droppings, and exudates collected from conspecific males and females in a chemicalcue, simultaneous discrimination procedure, suggesting that these lizards are capable of discriminating and utilizing chemical signals as a mode of social communication. Expand
Straight-line movement and competitive mate searching in prairie rattlesnakes, Crotalus viridis viridis
TLDR
This long-term field study of prairie rattlesnakes in Wyoming indicated that straight-line movement by males is critical for mate location and, thus, for mating success. Expand
Prairie rattlesnake seasonal migrations: episodes of movement, vernal foraging and sex differences
TLDR
The mating system of prairie rattlesnakes in Wyoming is best described as prolonged mate searching polygyny, allowing males to concentrate foraging activities into the first half of the season, so that the second can be largely dedicated to a search for females. Expand
Reproduction, rookery use, and thermoregulation in free-ranging, pregnant Crotalus v. viridis
TLDR
A study of the reproductive biology of pregnant, free-ranging prairie rattlesnakes was conducted in Wyoming from 1982 through 1987, finding residence in rookeries may enhance reproductive success through thermal effects on gestation. Expand
Prairie rattlesnake vernal migration: field experimental analyses and survival value
TLDR
Results of this study support the following hypotheses: a primary function of prairie rattlesnake vernal migrations in Wyoming is to find food; males and females differ in vernAL foraging patterns, in ways consistent with snake life history and search-time theory; and preyderived chemical cues play a role in patch selection by males. Expand
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