Egg-Clutch Biomechanics Affect Escape-Hatching Behavior and Performance DOI Creative Commons
Brandon A. Güell, J. Gregory McDaniel, Karen M. Warkentin

et al.

Integrative Organismal Biology, Journal Year: 2024, Volume and Issue: 6(1)

Published: Jan. 1, 2024

Synopsis Arboreal embryos of phyllomedusine treefrogs hatch prematurely to escape snake predation, cued by vibrations in their egg clutches during attacks. However, success varies between species, from ∼77% Agalychnis callidryas just ∼9% A. spurrelli at 1 day premature. Both species begin responding attacks similar developmental stages, when vestibular mechanosensory function begins, suggesting that sensory ability does not limit the hatching response spurrelli. are thick and gelatinous, while thinner stiffer. We hypothesized this structural difference alters motion excited Since snakes must propagate through reach embryos, we attack-induced may reflect effects clutch biomechanics on cues available embryos. Mechanics predicts thinner, stiffer structures have higher free vibration frequencies, greater spatial attenuation, faster damping than thicker, more flexible structures. assessed embedding small accelerometers both recording standardized excitation tests two distances accelerometer. Analyses recorded showed frequencies clutches. Higher elicit less callidryas, could reduce amount can perceive. To directly test if structure affects attacks, transplanted eggs into compared rates with untransplanted, age-matched conspecific controls. also performed reciprocal transplantation pairs as a method control. Transplanting nearly tripled (44%) controls (15%), whereas transplanting different only increased 10%. At competence, no longer jelly-encapsulated, retain jelly coat. Therefore, latency de-jellied control, jelly-encapsulated siblings using manual egg-jiggling simulate predation cues. Embryos were likely hatched control siblings. Together, our results suggest properties parentally produced egg-clutch structures, including biomechanics, constrain information contribute interspecific differences responses predator

Language: Английский

Egg-Clutch Biomechanics Affect Escape-Hatching Behavior and Performance DOI Creative Commons
Brandon A. Güell, J. Gregory McDaniel, Karen M. Warkentin

et al.

Integrative Organismal Biology, Journal Year: 2024, Volume and Issue: 6(1)

Published: Jan. 1, 2024

Synopsis Arboreal embryos of phyllomedusine treefrogs hatch prematurely to escape snake predation, cued by vibrations in their egg clutches during attacks. However, success varies between species, from ∼77% Agalychnis callidryas just ∼9% A. spurrelli at 1 day premature. Both species begin responding attacks similar developmental stages, when vestibular mechanosensory function begins, suggesting that sensory ability does not limit the hatching response spurrelli. are thick and gelatinous, while thinner stiffer. We hypothesized this structural difference alters motion excited Since snakes must propagate through reach embryos, we attack-induced may reflect effects clutch biomechanics on cues available embryos. Mechanics predicts thinner, stiffer structures have higher free vibration frequencies, greater spatial attenuation, faster damping than thicker, more flexible structures. assessed embedding small accelerometers both recording standardized excitation tests two distances accelerometer. Analyses recorded showed frequencies clutches. Higher elicit less callidryas, could reduce amount can perceive. To directly test if structure affects attacks, transplanted eggs into compared rates with untransplanted, age-matched conspecific controls. also performed reciprocal transplantation pairs as a method control. Transplanting nearly tripled (44%) controls (15%), whereas transplanting different only increased 10%. At competence, no longer jelly-encapsulated, retain jelly coat. Therefore, latency de-jellied control, jelly-encapsulated siblings using manual egg-jiggling simulate predation cues. Embryos were likely hatched control siblings. Together, our results suggest properties parentally produced egg-clutch structures, including biomechanics, constrain information contribute interspecific differences responses predator

Language: Английский

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