Journal article
EFFECTS OF INCUBATION ENVIRONMENT AND MATERNAL IDENTITY ON MORPHOLOGICAL, PHYSIOLOGICAL AND BEHAVIORAL TRAITS IN A LONG LIVED VERTEBRATE
American zoologist, Vol.38(5)
01 Nov 1998
Abstract
Physiological traits such as body size and growth affect offspring performance in ways that affect fitness. Differences in phenotype between individual offspring are due to interindividual differences in genotype, environment, and/or maternal effects. We measured among individual and among-clutch variation in physiological, morphological, and behavioral traits in a long-lived vertebrate, the common snapping turtle (Chelydra serpentina). Clutches of eggs were collected from the John Heinz National Wildlife Refuge, Philadelphia, PA, and split between three incubation temperatures in the laboratory. We measured size at hatching, hatchling growth rates, oxygen consumption, and fighting response time in hatchlings. In particular, we explored variation due to incubation temperature, clutch identity and maternal effects in these parameters. Clutch identity had significant effects on size at hatching, hatchling growth rates, oxygen consumption, and righting response time, while effects of incubation temperature and egg size were more variable. Clutch identity, or genetic effects, contributed significantly to snapping turtle hatchling phenotype.
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Details
- Title
- EFFECTS OF INCUBATION ENVIRONMENT AND MATERNAL IDENTITY ON MORPHOLOGICAL, PHYSIOLOGICAL AND BEHAVIORAL TRAITS IN A LONG LIVED VERTEBRATE
- Creators
- A.C SteyermarkJ.R Spotila
- Publication Details
- American zoologist, Vol.38(5)
- Publisher
- Society for Integrative and Comparative Biology(SICB)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Identifiers
- 991021013170004721