Infanticide is driven by unfamiliarity with offspring location and associated with androgenic shifts in mimic poison frogs DOI Creative Commons
Amaris R. Lewis, Billie C. Goolsby, Bryan H. Juarez

et al.

Hormones and Behavior, Journal Year: 2024, Volume and Issue: 166, P. 105656 - 105656

Published: Nov. 1, 2024

Infanticide is widespread across the animal kingdom, but physiological drivers of infanticide versus care or neglect are relatively unexplored. Here, we identified salient environmental and antecedents in mimic poison frog (Ranitomeya imitator), a biparental amphibian. We explored potential cues influencing infant-directed behavior by evaluating changes frequency food provisioning tadpole mortality after either cross-fostering tadpoles between family units displacing within terraria their parents. found that offspring location reduce increase infanticide. Specifically, parents fed displaced less and, some instances, increased. also investigated whether were related to steroid hormone concentrations an unfamiliar setting. fertilized eggs hatchlings new territory included cannibalism was associated with lower testosterone concentrations, not corticosterone. Overall, our results support earlier findings familiarity drives parental investment frogs, while indicating association low androgen levels infanticidal

Language: Английский

Validating the underpinnings of water corticosterone measurement for aquatic amphibians DOI Creative Commons
Tessa E. Smith,

Andrew M. Holmes,

Christopher J. Emmans

et al.

F1000Research, Journal Year: 2025, Volume and Issue: 14, P. 53 - 53

Published: Jan. 9, 2025

Good animal welfare is important ethically but also to ensure animals provide valid scientific models. Despite thousands of amphibians in research laboratories there minimal quantitative evidence pertaining their management and welfare. This study validated methods non-invasively measure corticosterone, the amphibian 'stress' hormone, from tank water a robust reliable assessment tool. We report experiments (A) that evaluate parameters linked performance our biochemical extraction for waterborne corticosterone and, importantly, associated sampling procedures. appropriate type, vessel, filtration methods, potential degradation over time impact procedures on levels. wanted determine yielded least background had minimum negative animals. The second series (B) evaluated biology Xenopus, including influence circadian rhythm, sex snout-vent length levels, since fundamental knowledge species' essential designing interpretation results. propose collecting samples deionised either plastic or glass containers. filtering process does not amount measured sample. Levels collected change 48-hr period so we advocate standardising hormone collection storage at - 20 °C. Repeated transfer frogs containers increase suggesting are cumulatively stressful. Corticosterone levels were impacted by phase, length. have developed quantify corticosterone. hope they template researchers wishing develop aquatic amphibians.

Language: Английский

Citations

0
Physiological state matching in a pair bonded poison frog DOI Creative Commons
Jessica P. Nowicki, Camilo Rodríguez, Julia C. Lee

et al.

Royal Society Open Science, Journal Year: 2024, Volume and Issue: 11(7)

Published: July 1, 2024

More than a century ago, Charles Darwin hypothesized that the empathy-like phenotype is phylogenetically widespread phenomenon. This idea remains contentious, due to challenges of empirically examining emotions, and few investigations among non-mammalian vertebrates. We provide support for Darwin's hypothesis by discovering partial evidence most ancestral form empathy, emotional contagion (i.e. matching another individual's state), in pair bonding mimetic poison frog, Ranitomeya imitator . found male corticosterone, physiological biomarker stress, positively correlates with female partners experimental semi-natural conditions. does not appear coincide behavioural state-matching. However, it specific relative familiar non-partners, independent effects commonly confound studies on contagion. Furthermore, this state-matching irrespective partnership longevity or lifetime reproductive output. These results physiologically indicate socially selective monogamous amphibian, paradigms elicit coinciding neural indicators morphogenic co-variation are needed further corroboration. Further forms empathy vertebrates warranted.

Language: Английский

Citations

1
EVIDENCE FOR EMPATHY IN PAIR BONDING POISON FROGS DOI Creative Commons
Jessica P. Nowicki, Camilo Rodríguez, Julia C. Lee

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: Sept. 26, 2022

Abstract More than a century ago, Charles Darwin hypothesized that the empathy-like phenotype is phylogenetically widespread phenomenon. This idea remains contentious, due to challenges of empirically examining emotions, and few investigations among non-mammalian vertebrates. We provide support for Darwin’s hypothesis by discovering partial evidence most ancestral form empathy, emotional contagion (i.e., matching another individual’s state), in pair bonding mimetic poison frog, Ranitomeya imitator . found male corticosterone, physiological biomarker stress, positively correlates with female partners experimental semi-natural conditions. does not appear coincide behavioral state-matching. However, it specific relative familiar non-partners, independent effects commonly confound studies on contagion. Furthermore, this state-matching irrespective partnership longevity or lifetime reproductive output. These results physiologically indicate socially selective monogamous amphibian, paradigms elicit coinciding neural indicators morphogenic co-variation are needed further corroboration. Further forms empathy vertebrates warranted.

Language: Английский

Citations

4
Androgenic shifts and external cues mediate parental care versus infanticide in mimic poison frogs DOI Creative Commons
Amaris R. Lewis, Billie C. Goolsby, Bryan H. Juarez

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: April 13, 2024

Abstract Infanticide is widespread across the animal kingdom, but physiological drivers of infanticide versus care or neglect are relatively unexplored. Here, we identified salient environmental and antecedents in mimic poison frog ( Ranitomeya imitator ), a biparental amphibian which female parents feed their tadpoles unfertilized eggs. Specifically, explored potential cues influencing infant- directed behavior by evaluating changes frequency food provisioning tadpole mortality after either cross-fostering between family units displacing within terraria parents. We found that offspring location reduce increase infanticide. fed displaced less and, some instances, increased. also investigated whether were related to steroid hormone concentrations an unfamiliar setting. fertilized eggs hatchlings new territory included cannibalism was associated with lower testosterone concentrations, not corticosterone. Overall, our results support earlier findings familiarity drives parental investment frogs, while indicating association low androgen levels infanticidal amphibian. Highlights Offspring decisions vs. In novel territories, adults cannibalize conspecific, unrelated young. Lower circulating

Language: Английский

Citations

0
Androgenic Shifts and External Cues Mediate Parental Care Versus Infanticide in Mimic Poison Frogs DOI
Amaris R. Lewis, Billie C. Goolsby, Bryan H. Juarez

et al.

Published: Jan. 1, 2024

Infanticide is widespread across the animal kingdom. However, physiological mechanisms underlying infanticide versus care or neglect are relatively unexplored. Here, we identified salient environmental and antecedents of in mimic poison frog (Ranitomeya imitator), a biparental monogamous amphibian which female parents feed their tadpoles with unfertilized eggs. Specifically, explored potential cues by evaluating changes frequency food provisioning tadpole mortality after cross-fostering within between morphs displacing terraria parents. After analyzing trophic egg deposition observing latter condition, concluded that to offspring location reduce increase infanticide. Following this observation, investigated whether steroid hormones relate an unfamiliar, resource-limited setting. Infanticidal behavior towards fertilized eggs hatchlings included cannibalism was associated lower testosterone concentrations upon displacement new environment, while corticosterone did not correlate at any sampling event. Ratios were overall infanticidal individuals. Overall, these findings support earlier investigations for offspring-directed frogs, offering novel perspective on temporal endocrine correlates

Language: Английский

Citations

0
Infanticide is driven by unfamiliarity with offspring location and associated with androgenic shifts in mimic poison frogs DOI Creative Commons
Amaris R. Lewis, Billie C. Goolsby, Bryan H. Juarez

et al.

Hormones and Behavior, Journal Year: 2024, Volume and Issue: 166, P. 105656 - 105656

Published: Nov. 1, 2024

Infanticide is widespread across the animal kingdom, but physiological drivers of infanticide versus care or neglect are relatively unexplored. Here, we identified salient environmental and antecedents in mimic poison frog (Ranitomeya imitator), a biparental amphibian. We explored potential cues influencing infant-directed behavior by evaluating changes frequency food provisioning tadpole mortality after either cross-fostering tadpoles between family units displacing within terraria their parents. found that offspring location reduce increase infanticide. Specifically, parents fed displaced less and, some instances, increased. also investigated whether were related to steroid hormone concentrations an unfamiliar setting. fertilized eggs hatchlings new territory included cannibalism was associated with lower testosterone concentrations, not corticosterone. Overall, our results support earlier findings familiarity drives parental investment frogs, while indicating association low androgen levels infanticidal

Language: Английский

Citations

0