Temporal and maternal effects on reproductive ecology of the giant gartersnake (Thamnophis gigas)
Southwestern Naturalist
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Abstract
We used mixed-effects models to examine relationships of reproductive characteristics of the giant gartersnake (Thamnophis gigas) to improve population modeling and conservation planning for this species. Neonates from larger litters had lower mass, and mass of neonates also was affected by random variation among mothers. Length of mother did not affect relative mass of litters; however, our data suggest that longer mothers expended less reproductive effort per offspring than shorter mothers. We detected random variation in length of neonates among mothers, but these lengths were not related to length of mother or size of litter. Mean size of litter varied among years, but little evidence existed for a relationship between size of litter or mass of litter and length of mother. Sex ratios of neonates did not differ from 1:1.
Suggested Citation
Halstead, B., Wylie, G.D., Casazza, M.L., Coates, P.S., 2009, Temporal and maternal effects on reproductive ecology of the giant gartersnake (Thamnophis gigas): Southwestern Naturalist, v. 56, no. 1, p. 29-34, https://doi.org/10.1894/GC-205.1.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Temporal and maternal effects on reproductive ecology of the giant gartersnake (Thamnophis gigas) |
| Series title | Southwestern Naturalist |
| DOI | 10.1894/GC-205.1 |
| Volume | 56 |
| Issue | 1 |
| Year Published | 2009 |
| Language | English |
| Publisher | Southwestern Association of Naturalists |
| Contributing office(s) | Western Ecological Research Center |
| Description | 6 p. |
| First page | 29 |
| Last page | 34 |