Why Does the Yellow-Eyed Ensatina Have Yellow Eyes? Batesian Mimicry of Pacific Newts (Genus Taricha) by the Salamander Ensatina eschscholtzii xanthoptica

@inproceedings{Kuchta2008WhyDT,
  title={Why Does the Yellow-Eyed Ensatina Have Yellow Eyes? Batesian Mimicry of Pacific Newts (Genus Taricha) by the Salamander Ensatina eschscholtzii xanthoptica},
  author={Shawn R. Kuchta and Alan H. Krakauer and Barry R. Sinervo},
  booktitle={Evolution; international journal of organic evolution},
  year={2008}
}
Abstract Color patterns commonly vary geographically within species, but it is rare that such variation corresponds with divergent antipredator strategies. The polymorphic salamander Ensatina eschscholtzii, however, may represent such a case. In this species, most subspecies are cryptically colored, whereas E. e. xanthoptica, the Yellow eyed ensatina, is hypothesized to be an aposematic mimic of highly toxic Pacific newts (genus Taricha). To test the mimicry hypothesis, we conducted feeding… 
Relaxed predation selection on rare morphs of Ensatina salamanders (Caudata: Plethodontidae) promotes a polymorphic population in a novel dune sand habitat
TLDR
It is suggested that this microgeographic island of relaxed selection on light-coloured morphs helps to explain the existence of this polymorphic population within a wind-blown sand region and support the idea that xanthistic and leucistic morphs are poorly adapted for dark substrates compared to typical morphs, but they are more or less equally adapted for light substrates.
The Influence of Mimicry on Wing Shape Evolution in the Butterfly Papilio dardanus (Lepidoptera: Papilionidae)
TLDR
Four nonmimetic Papilio Linnaeus, 1758 species did not show significant wing shape dimorphism between sexes, supporting the idea that in P. dardanus females, the evolution of mimicry led to changes in hind wing shape beyond the loss of tails.
Morphological characterization of the glandular system in the salamander Plethodon shermani (Caudata, Plethodontidae).
TLDR
The results strongly indicate that the secretions of both gland types from the dorsal as well as the ventral side form the adhesive mucus in Plethodon shermani, consisting of basic and acidic glycoproteins, glycoconjugates with mannose and α-L-fucose residues aswell as lipid components.
Chemical Defense of the Eastern Newt (Notophthalmus viridescens): Variation in Efficiency against Different Consumers and in Different Habitats
TLDR
This work found that adult eastern newts were unpalatable to predatory fishes and a crayfish, but were readily consumed by bullfrogs, and suggested that amphibians (frogs) and reptiles (turtles) that co-occur with fishes rather than from fishes directly may be more complex and indirect than previously appreciated.
Closing the ring: historical biogeography of the salamander ring species Ensatina eschscholtzii
TLDR
The Bayesian phylogenetic analysis most strongly supports the classic ring species model, modified to accommodate an improved understanding of the complex geomorphological evolution of the California Coast Ranges.
Pronounced phylogeographic structure on a small spatial scale: geomorphological evolution and lineage history in the salamander ring species Ensatina eschscholtzii in central coastal California.
TLDR
It is concluded that such striking levels of phylogeographic structure reflect interspersed episodes of spatial fragmentation, in part driven by the complex geomorphological evolution of the California Coast Range system.
The Functional Significance of Aposematic Signals: Geographic Variation in the Responses of Widespread Lizard Predators to Colourful Invertebrate Prey
TLDR
The imperfect ability of visual predators to recognize potential prey as unpalatable, both in the presence and absence of the aposematic signal, may help explain how diverse forms of mimicry exploit the predator’s visual system to deter predation.
Morphological and Behavioral Evidence of Batesian Mimicry in Nestlings of a Lowland Amazonian Bird
TLDR
It is argued that the slow growth rate, combined with high nest predation, favors the evolution of antipredation mechanisms such as the unique morphological and behavioral characteristics of L. hypopyrra nestlings.
The anti-predator behaviour of wild white-handed gibbons (Hylobates lar)
TLDR
It is concluded that gibbons are not immune to predation and that terrestrial predators elicit consistent immediate and delayed anti-predation responses, which include predator-specific vocal responses.
Adaptive colouration in amphibians.
TLDR
The present view of functions of colouration in amphibians is reviewed with the main focus on relatively unexplored topics and more studies that take advantage of recent developments in measurement of visual properties of several possible signalling receivers are encouraged.
...
1
2
3
...

References

SHOWING 1-10 OF 40 REFERENCES
Experimental Support for Aposematic Coloration in the Salamander Ensatina eschscholtzii xanthoptica: Implications for Mimicry of Pacific Newts
Abstract A field experiment was conducted to test the hypothesis that the plethodontid salamander Ensatina eschscholtzii xanthoptica benefits from aposematic coloration. Under field conditions, clay
Phylogenetic evidence for colour pattern convergence in toxic pitohuis: Müllerian mimicry in birds?
  • J. Dumbacher, R. Fleischer
  • Biology, Medicine
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2001
TLDR
It is shown that the ‘mimetic’ phenotype is ancestral to both species and that the resemblance in most races is better explained by a shared ancestry, consistent with the hypothesis that Müllerian mimicry is driving the evolution for a similar colour pattern between P. dichrous and P. kirhocephalus.
Interspecific and intraspecific views of color signals in the strawberry poison frog Dendrobates pumilio
TLDR
The results indicate that the colors displayed by the various color morphs of D. pumilio are effective signals both to conspecifics and to a model predator.
Molecular phylogenetic analysis of slender salamanders genus Batrachoseps (Amphibia: Plethodontidae), from central coastal California with descriptions of four new species
TLDR
Three new species of Plethodontid salamanders may have arisen vicariantly with respect both to each other and to related forms in southern California, in part as a result of the dramatic tectonic movements that have characterized the last 15 million years of geological history in western North America.
Incipient species formation in salamanders of the Ensatina complex.
  • D. Wake
  • Biology, Medicine
    Proceedings of the National Academy of Sciences of the United States of America
  • 1997
TLDR
The Ensatina eschscholtzii complex of plethodontid salamanders, a well-known "ring species," is thought to illustrate stages in the speciation process, and new data show that the complex includes a number of geographically and genetically distinct components that are at or near the species level.
PROBLEMS WITH SPECIES: PATTERNS AND PROCESSES OF SPECIES FORMATION IN SALAMANDERS1
TLDR
Analysis of patterns of genetic differentiation in allozymes and mtDNA in relation to the geological history of California is used to generate biogeographic scenarios to help explain the contrast between Batrachoseps and Ensatina.
STRONG SELECTION AGAINST HYBRIDS AT A HYBRID ZONE IN THE ENSATINA RING SPECIES COMPLEX AND ITS EVOLUTINARY IMPLICATIONS
TLDR
The evidence for strong but incomplete isolation across this centrally located contact is consistent with theory suggesting a gradual increase in postzygotic incompatibility between allopatric populations subject to divergent selection and reinforces the value of Ensatina as a system for the study of divergence and speciation at multiple stages.
Molecular phylogenetic evidence for a mimetic radiation in Peruvian poison frogs supports a Müllerian mimicry hypothesis
TLDR
This work presents molecular phylogenetic evidence that the poison frog Dendrobates imitator mimics three different poison frogs in different geographical regions in Peru, providing the first evidence for a Müllerian mimetic radiation in amphibians.
Avian Predation on the Monarch Butterfly and Its Implications for Mimicry Theory
TLDR
Early expectation that this overwintering phenomenon would provide a natural laboratory for the investigation of avian predation on the most classic of aposematic butterflies has proved resoundingly correct has been proved.
The Selective Advantage of the Defensive Posture of the Newt, Taricha granulosa
TLDR
Feeding studies using Taricha were conducted to determine if the bright ventral coloration and the defen- sive posture are important aposematic cues eliciting avoidance by birds.
...
1
2
3
4
...