"Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding, Sixth Edition" edited by Brian I. Crother. 2008. [book review]

Cook, Francis R.

doi:10.22621/cfn.v122i4.620

Cited by 7 publications

(7 citation statements)

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“…iNaturalist categorizes some Pseudacris regilla (e.g., in the San Francisco Bay Area) as Pseudacris sierra. However, these distinctions are not universally accepted by the herpetology community (Barrow et al, 2014;Crother et al, 2017). Here we consider P. sierra, P. hypochondriaca, and Hyla regilla synonyms of Pseudacris regilla.…”

Section: Methodsmentioning

confidence: 97%

Are Pacific Chorus Frogs (Pseudacris regilla) Resistant to Tetrodotoxin (TTX)? Characterizing Potential TTX Exposure and Resistance in an Ecological Associate of Pacific Newts (Taricha)

Montana

Ramírez‐Castañeda

Tarvin

2023

Journal of Herpetology

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Animals that frequently encounter toxins often develop mechanisms of toxin resistance over evolutionary time. Both predators that consume toxic prey and organisms in physical contact with a toxin in their environment may experience natural selection for resistance. Based on observations that Pacific Chorus Frogs (Pseudacris regilla) sometimes eat and mistakenly amplect tetrodotoxin (TTX)-defended Taricha newts, we predicted that P. regilla may possess TTX resistance. We compared amino acid sequences of domain IV of the muscle voltage-gated sodium channel gene SCN4A (NaV1.4) in populations of P. regilla that are sympatric and allopatric with Taricha. We identified a single substitution in NaV1.4 of P. regilla at a conserved site in the pore loop where TTX binds. Although the role of this site in TTX resistance has not been functionally assessed, both allopatric and sympatric P. regilla had this substitution, along with several other reptiles and amphibians, suggesting that it may be unrelated to TTX exposure from Taricha. Thus, there is no conclusive evidence that P. regilla possesses TTX resistance encoded by amino acid substitutions in this domain. California occurrence data from the last 50 yr indicate that Taricha activity peaks in January while the activity of P. regilla peaks in April, with times where the species may come into contact. However, P. regilla may not be exposed to levels of TTX from Taricha high enough to select for mutations in NaV1.4. Other unidentified mechanisms of TTX resistance could be present in P. regilla and other species sympatric with toxic newts.

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Section: Methodsmentioning

confidence: 97%

Are Pacific Chorus Frogs (Pseudacris regilla) Resistant to Tetrodotoxin (TTX)? Characterizing Potential TTX Exposure and Resistance in an Ecological Associate of Pacific Newts (Taricha)

Montana

Ramírez‐Castañeda

Tarvin

2023

Journal of Herpetology

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“…A closely related island species (C. savagei) is limited to Cerralvo Island off the south-eastern coast of Baja California Sur and is recognized in both recent studies (Grismer et al 2002;Holm 2008). While most taxonomists follow Grismer et al (2002) and only recognize two species of Chilomeniscus (Powell et al 2016;Crother 2017), a later unpublished dissertation by Holm (2008) recognizes three additional species that Grismer et al (2002) does not: C. punctatissimus (an island form found exclusively on Espiritu Santo and Partida Islands off of the south-eastern coast of the Baja California peninsula), C. cinctus (found in north-western mainland Mexico and south-western USA), and C. fasciatus (found from northern Baja California south to La Paz). Importantly, multiple populations and species have colour polymorphism, including morphs with the red and black bands typical of coral snake mimics (Davis Rabosky et al 2016b).…”

Section: Taxonomic History Of Sonora Chilomeniscus and Chionactismentioning

confidence: 99%

Synopsis and taxonomic revision of three genera in the snake tribe Sonorini

Cox

Rabosky

Holmes

et al. 2018

Journal of Natural History

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Delimiting species is a crucial goal of integrative biology, and yet can be misled by homoplasy and high levels of morphological variation. The snake tribe Sonorini contains three genera that have long confounded taxonomists: Chilomeniscus, Chionactis and Sonora. Dynamic colour evolution in this group, including rampant geographic variation in colour and colour polymorphism, has led to a chaotic taxonomy. We used mitochondrial and high-throughput nuclear data (ddRADseq) and complete taxonomic sampling of each genus to reconstruct phylogenetic relationships and systematically revise the genus. Our research revealed that Sonora is paraphyletic with regards to Chilomeniscus and Chionactis and that at least one species (S. semiannulata) is paraphyletic with respect to at least one other recognized species. Additionally, we found substantial undescribed genetic diversity within multiple species which is incongruent with morphological variation in coloration. Accordingly, we proposed synonymizing Chionactis and Chilomeniscus with Sonora, which has taxonomic priority over both genera. As we found genetic evidence that supported some of the historically delimited diversity within multiple taxa, we revised species-level taxonomy accordingly. This new taxonomy recognizes a revised genus of Sonora that contains 15 species of diminutive and often brightly coloured snakes that are distributed from central Mexico to north-western USA. http://www.zoobank.org/urn:lsid:zoobank.org:pub:45A553D8-6435-4E0A-84ED-DF31E2CCD872

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“…Here, our goal was to quantify differential investment in innate immune functions of four congeneric species of wild tortoises that span a large range of environmental conditions in the United States. We sampled only four out of the five to six species that comprise one distinct clade of Gopherus , excluding both the Sinoloan populations of Sonoran tortoises (putative species Gopherus evgoodei ; Taylor et al., 2016) and the sister group to gopher tortoises (Bolson tortoises, Gopherus flavomarginatus ; Crother, 2017; Thomas & Shaffer, 2010). Therefore, we focused on species differences and but not the effects of relatedness among species in influencing ecoimmunological patterns (Garland Jr et al., 2005).…”

Section: Introductionmentioning

confidence: 99%

Ecoimmunological differences among congeneric tortoises in the United States

Sandmeier,

Morales,

Gomez

et al. 2023

Journal of Zoology

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Comparative studies, especially of related species that span across ecoregions, have the potential to increase our understanding of different ecological or evolutionary pressures that may drive host–pathogen dynamics. We quantified differences in immune investment, via differential leukocyte counts and bacteria‐killing assays, across four closely related species of Gopherus tortoises, found across a gradient from the desert southwest to the subtropical southeast of the United States. We further quantified differences in a commensal nasal microbe (Pasteurella testudinis) and tested for associations among immune measures, P. testudinis, and previously quantified levels of the pathogen Mycoplasma agassizii and upper respiratory tract disease (URTD). We also evaluated the potential influence of environmental variables on immune investment, P. testudinis, and disease. We found that tortoise species in more arid environments had a reduced investment in inflammatory leukocytes, possibly as a strategy to reduce water loss, and invested more heavily in innate anti‐inflammatory leukocytes. Conversely, we found that species in moister, resource‐rich environments may face greater pathogen pressure, likely due to increased population densities and transmission rates among host tortoises. These tortoises had increased investment in inflammatory cells and appeared to reduce their nasal microbes (including P. testudinis) when they exhibited URTD. Thus, we quantified two negative correlational patterns: (1) between inflammatory responses and water conservation and (2) between resource quality and transmission rates. We hypothesize that these relationships across species may reflect variable development or evolution of innate immune functions.

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"Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding, Sixth Edition" edited by Brian I. Crother. 2008. [book review]

Cited by 7 publications

References 0 publications

Are Pacific Chorus Frogs (Pseudacris regilla) Resistant to Tetrodotoxin (TTX)? Characterizing Potential TTX Exposure and Resistance in an Ecological Associate of Pacific Newts (Taricha)

Are Pacific Chorus Frogs (Pseudacris regilla) Resistant to Tetrodotoxin (TTX)? Characterizing Potential TTX Exposure and Resistance in an Ecological Associate of Pacific Newts (Taricha)

Synopsis and taxonomic revision of three genera in the snake tribe Sonorini

Ecoimmunological differences among congeneric tortoises in the United States

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