INVESTIGATING FACTORS INFLUENCING THE PROBABILITY OF SURVIVAL TO METAMORPHOSIS OF BOREAL TOADS AT MULTIPLE SCALES
Crockett J. 2019. INVESTIGATING FACTORS INFLUENCING THE PROBABILITY OF SURVIVAL TO METAMORPHOSIS OF BOREAL TOADS AT MULTIPLE SCALES. Colorado State University
ABSTRACT (paragraph 3): This thesis explores several hypotheses related to early life-stage survival of boreal toads across different spatial and temporal scales. Bd infects tadpoles as well as adult toads, lowering their survival rates. Desiccation is known to cause the complete failure of reproduction at a breeding site, and tadpoles at ephemeral sites may be under stress associated with warming water temperatures and falling water levels even if the site does not dry out completely. Predation by aquatic insects and birds can be a major source of mortality and introduced trout could also attempt to ingest tadpoles despite their chemical defenses, lowering survival rates at sites with trout.
- Type
- Academic
- Authors
- Crockett, John
- Date of Issue
- 2019
- Publisher
- Colorado State University
- Units
- ROMO
- Keywords
- thesis