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- W1998996978 abstract "The relative numbers of trunk (body) and caudal (tail) vertebrae in snakes might be influenced by at least four processes: (1) natural selection for crawling speed, (2) fecundity selection for larger trunk size in females, (3) sexual selection for longer bodies or tails in males and/or (4) developmental constraints (if an increase in the number of body vertebrae requires a decrease in the number of tail vertebrae, or vice versa). These four hypotheses generate different predictions about the relationship between sex differences in the numbers of body vertebrae vs. tail vertebrae. I collated published data to test these predictions, both with raw data and using phylogenetically independent contrasts. Some snake lineages show a negative correlation between the magnitude of sex disparities in trunk vs. caudal vertebrae whereas other lineages show the reverse pattern, or no correlation. Thus, different selective pressures seem to have been important in different lineages. Vertebral numbers in snakes may offer a useful model system in which to explore the conflicts between natural, fecundity and sexual selection." @default.
- W1998996978 created "2016-06-24" @default.
- W1998996978 creator A5018584481 @default.
- W1998996978 date "2000-05-01" @default.
- W1998996978 modified "2023-10-11" @default.
- W1998996978 title "Vertebral numbers in male and female snakes: the roles of natural, sexual and fecundity selection" @default.
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- W1998996978 doi "https://doi.org/10.1046/j.1420-9101.2000.00181.x" @default.
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