Captivity and Fitness
Examining morphology and behavior of captive-bred individuals compared to their natural counterparts.
Conservation of at-risk amphibian species via sperm cryopreservation.
Captive-breeding and reintroduction of endangered amphibians and reptiles.
Developing assisted reproduction technologies (hormone injections, in vitro fertilization, cryopreservation) to ensure the conservation of threatened and endangered amphibians.
Systematic observation and quantification of the unusual egg attendance behavior of a pond-breeding frog with maternal egg attendance (in Thailand) in natural settings, as well as experimental manipulations to confirm its adaptive significance.
Examine the extreme anti-predator behavior exhibited by adult frogs during egg attendance, often against organisms that are a source of danger to both adults and their embryos.
Examining plasticity in amphibian parental behavior in response to predator threats and the consequences for their dependent offspring using a bamboo-breeding treefrog (in Taiwan) with paternal egg attendance.
Examine embryonic development and hatching time in response of various hatching cues, such as predation, submergence, and desiccation. Consider ways in which cues are transmitted, received, and affecting the hatching behavior of embryos.
Life History Adaptations
Observations of diet, breeding, and predation of vertebrate and invertebrate species in natural pond habitats (in Sri Lanka, Thailand, and Taiwan).