The integrative effects of behavior and morphology on amphibian movement

Ecology and Evolution
Evan M BredewegTiffany S Garcia

Abstract

Animal movement and dispersal are key factors in population dynamics and support complex ecosystem processes like cross-boundary subsidies. Juvenile dispersal is an important mechanism for many species and often involves navigation in unfamiliar habitats. For species that metamorphose, such as amphibians, this transition from aquatic to terrestrial environments involves the growth and use of new morphological traits (e.g., legs). These traits strongly impact the fundamental ability of an organism to move in novel landscapes, but innate behaviors can regulate choices that result in the realized movements expressed. By assessing the integrative role of morphology and behavior, we can improve our understanding of juvenile movement, particularly in understudied organisms like amphibians. We assessed the roles of morphological (snout-vent length and relative leg length) and performance (maximal jump distance) traits in shaping the free movement paths, measured through fluorescent powder tracking, in three anuran species, Pacific treefrog (Hyliola regilla), Western toad (Anaxyrus boreas), and Cascades frog (Rana cascadae). We standardized the measurement of these traits to compare the relative role of species' innate differences vers...Continue Reading

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Citations

Feb 19, 2021·Bulletin of Environmental Contamination and Toxicology·Renyan DuanYang Liu

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Software Mentioned

ImageJ
heplots
car
R
ggplot2

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