Mimetic Divergence and the Speciation Continuum in the Mimic Poison Frog Ranitomeya imitator

2016 ◽  
Vol 187 (2) ◽  
pp. 205-224 ◽  
Author(s):  
Evan Twomey ◽  
Jacob S. Vestergaard ◽  
Pablo J. Venegas ◽  
Kyle Summers
Keyword(s):  
Poison Frog ◽  
Ranitomeya Imitator ◽  
Speciation Continuum

scholarly journals Testing for selection on color and pattern in a mimetic radiation

2012 ◽  
Vol 58 (4) ◽  
pp. 668-676 ◽  
Author(s):  
Justin Yeager ◽  
Jason L. Brown ◽  
Victor Morales ◽  
Molly Cummings ◽  
Kyle Summers
Keyword(s):  
Genetic Divergence ◽  
Spectral Reflectance ◽  
Color Pattern ◽  
Mtdna Sequences ◽  
Poison Frog ◽  
Neutral Drift ◽  
Phenotypic Divergence ◽  
Ranitomeya Imitator ◽  
D Loop ◽  
Testing For Selection

Abstract In this paper, we analyze variation in spectral reflectance and color pattern among populations to demonstrate dramatic divergence between four distinct morphs of the mimic poison frog Ranitomeya imitator. We also analyze genetic divergence in d-loop mtDNA sequences between populations. We then use coalescent-based simulations to demonstrate that the high levels of observed phenotypic divergence are not consistent with levels of genetic divergence expected under neutral drift among populations, implying an important role for selection in driving divergence between these populations.

scholarly journals Alkaloid avoidance in poison frog tadpoles

2022 ◽  
Author(s):  
Eugenia Sanchez ◽  
Travis Ramirez ◽  
Lauren A O'Connell
Keyword(s):  
Locomotor Activity ◽  
Secondary Metabolites ◽  
Feeding Behavior ◽  
Chemical Defense ◽  
Poison Frog ◽  
Poison Frogs ◽  
Frog Tadpoles ◽  
Ranitomeya Imitator

Animals show a spectrum of avoidance-tolerance to foods containing toxic secondary metabolites. However, this spectrum has not been evaluated in animals that may actively seek out these compounds as a chemical defense. Poison frogs sequester toxic and unpalatable alkaloids from their diet, and in some species, tadpoles are exposed to these toxins before the development of their skin granular glands, which are used for toxin compartmentalization. Here, we examined the effects of the alkaloid decahydroquinoline (DHQ) in tadpoles of the Mimetic poison frog, Ranitomeya imitator, using alkaloid supplemented food. We found that although their survival is lowered by the alkaloid, their development is only mildly affected, with no evident effects on their growth. Furthermore, locomotor activity and feeding behavior was altered in the first week of DHQ treatment, probably in part through nicotinic blockade. However, after two weeks, tadpoles learned to avoid the alkaloid by visiting the food area only when necessary to eat. Our results suggest that poison frogs navigate the avoidance-tolerance spectrum during the development of their sequestration machinery.

Who cares for the eggs? Analysis of egg attendance behaviour in Ranitomeya imitator, a poison frog with biparental care

Behaviour ◽  
2021 ◽  
pp. 1-12
Author(s):  
Lisa M. Schulte ◽  
Kyle Summers
Keyword(s):  
Parental Care ◽  
Biparental Care ◽  
Poison Frog ◽  
Poison Frogs ◽  
Different Types ◽  
Ranitomeya Imitator ◽  
Males And Females ◽  
General Care

Abstract Dendrobatid poison frogs are known for their diverse parental care behaviours, including terrestrial egg attendance. While usually this behaviour is conducted by males, this study compared the pre-hatching investment of males and females in Ranitomeya imitator, a species with biparental care. Although males tended to spend more time with their eggs overall, there was no difference between sexes when comparing different types of care behaviour. Furthermore, both sexes increased general care behaviour when caring for more than one clutch. The finding that the sexes are relatively equal in their contribution to basic parental care forms provides a basis to understand why biparental care is stable in this species.

scholarly journals Intraspecific Call Variation in the Mimic Poison Frog Ranitomeya imitator

Herpetologica ◽  
2015 ◽  
Vol 71 (4) ◽  
pp. 252-259 ◽  
Author(s):  
Evan Twomey ◽  
Michael Mayer ◽  
Kyle Summers
Keyword(s):  
Poison Frog ◽  
Ranitomeya Imitator

scholarly journals Erratum to: Ant and Mite Diversity Drives Toxin Variation in the Little Devil Poison Frog

2016 ◽  
Vol 42 (8) ◽  
pp. 849-849
Author(s):  
Jenna R. McGugan ◽  
Gary D. Byrd ◽  
Alexandre B. Roland ◽  
Stephanie N. Caty ◽  
Nisha Kabir ◽  
...  
Keyword(s):  
Poison Frog

Sequestered and Synthesized Chemical Defenses in the Poison Frog Melanophryniscus moreirae

2015 ◽  
Vol 41 (5) ◽  
pp. 505-512 ◽  
Author(s):  
Adriana M. Jeckel ◽  
Taran Grant ◽  
Ralph A. Saporito
Keyword(s):  
Chemical Defenses ◽  
Poison Frog

scholarly journals Ameerega flavopicta (Lutz, 1925): first dart-poison frog (Anura: Dendrobatidae) recorded for the state of São Paulo, Brazil, with commetns on its adertisement calls and taxonomy

Check List ◽  
2012 ◽  
Vol 8 (3) ◽  
pp. 502 ◽  
Author(s):  
Lucas Borges Martins ◽  
Ariovaldo Antonio Giaretta
Keyword(s):  
First Record ◽  
Minas Gerais ◽  
Sao Paulo ◽  
The State ◽  
São Paulo ◽  
Advertisement Calls ◽  
Poison Frog ◽  
Rocky Habitats

Ameerega flavopicta is a dart-poison frog (Dendrobatidae) widely distributed throughout rocky habitats in the Brazilian states of Minas Gerais, Goiás, Tocanthins, Pará, and Maranhão. Here we repoert for the first record of a dendrobatid frog in the State of São Paulo, Brazil, based on individuals of A. flavopicta found in the Municipality of Pedregulho, and also describe the advertisement calls of a male from this population. A taxonomic discussion is provided.

Roughing It: A Mantellid Poison Frog Shows Greater Alkaloid Diversity in Some Disturbed Habitats#

2010 ◽  
Vol 73 (3) ◽  
pp. 322-330 ◽  
Author(s):  
Nirina R. Andriamaharavo ◽  
H. Martin Garraffo ◽  
Ralph A. Saporito ◽  
John W. Daly ◽  
Christian R. Razafindrabe ◽  
...  
Keyword(s):  
Poison Frog ◽  
Disturbed Habitats
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