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1. Climate change and range restriction of common salamanders in eastern Canada and the United States

Author:
Brian W. Widmer; Thomas M. Gehring; Benjamin W. Heumann; Kirsten E. Nicholson
Source:
journal of wildlife management 2022 v.86 no.5 pp. e22235
ISSN:
0022-541X
Subject:
Ambystoma; Plethodon cinereus; biodiversity; climate; climate change; databases; ecological value; greenhouse gases; meteorological data; niches; risk; salamanders and newts; wildlife management; Canada
Abstract:
... The sensitivity of amphibian species to shifts in environmental conditions has been exhibited through long‐term population studies and the projection of ecological niche models under expected conditions. Species in biodiversity hotspots have been the focus of ample predictive modeling studies, while, despite their significant ecological value, wide‐ranging and common taxa have received less attent ...
DOI:
10.1002/jwmg.22235

2. Divergent physiological acclimation responses to warming between two co-occurring salamander species and implications for terrestrial survival

Author:
Arianne F. Messerman; Micah Turrell; Manuel Leal
Source:
Journal of thermal biology 2022 v.106 pp. 103228
ISSN:
0306-4565
Subject:
Ambystoma; acclimation; climate change; energy; habitats; juveniles; nests; salamanders and newts; spring; surface area; survival rate; sympatry; temperature
Abstract:
... Small differences in physiological responses are known to influence demographic rates such as survival. We tested for differences in the physiological acclimation responses of two closely-related salamander species that often co-occur, Ambystoma maculatum and A. opacum. Specifically, we measured changes in critical thermal maxima (CTₘₐₓ), standard metabolic rates (SMRs), and respiratory surface ar ...
DOI:
10.1016/j.jtherbio.2022.103228

3. The Effects of Livestock, Proximity to Trees, and Aquatic Characteristics on the Abundance of Ambystoma Altamirani within a Stream

Author:
Wendoline Gómez Franco; Geoffrey R. Smith; Julio A. Lemos-Espinal
Source:
Journal of herpetology 2022 v.56 no.1 pp. 56-59
ISSN:
1937-2418
Subject:
Ambystoma; adults; anthropogenic stressors; aquatic habitat; herpetology; larvae; livestock; salamanders and newts; streams; water temperature; Mexico
Abstract:
... The endangered, endemic salamander, Ambystoma altamirani, is distributed in streams in the Transvolcanic Belt around Mexico City. Like other Mexican ambystomatids, A. altamirani is threatened by several anthropogenic stressors, including land use changes. Here we examine how aspects of the terrestrial habitat, such as the distance to wooded habitats and the presence of livestock, as well as severa ...
DOI:
10.1670/20-118

4. Modelling physiological costs to assess impacts of climate change on amphibians in Yellowstone National Park, U.S.A

Author:
Paul E. Bartelt; Peter E. Thornton; Robert W. Klaver
Source:
Ecological indicators 2022 v.135 pp. 108575
ISSN:
1470-160X
Subject:
Ambystoma; Anaxyrus boreas; Pseudacris; Rana; climate; climate change; ectothermy; forests; habitats; land management; landscapes; national parks; path analysis; rain; shrubs; snowpack; soil water; vegetation cover
Abstract:
... Amphibians are vital elements of ecosystems, serving as predator and prey. Their biphasic nature makes them dependent on aquatic and terrestrial habitats; as wet-skinned ectotherms, they are vulnerable to a range of environmental threats, including climate change. Yellowstone National Park (YNP) is becoming warmer and drier, and some wetlands important to amphibians have diminished. Continued clim ...
DOI:
10.1016/j.ecolind.2022.108575

5. Multiple-Predator Effects and Functional Redundancy of Pond Predators

Author:
Kenzi M. Stemp; Thomas L. Anderson; Jon M. Davenport
Source:
Journal of herpetology 2022 v.56 no.1 pp. 18-26
ISSN:
1937-2418
Subject:
Ambystoma; Anaxyrus americanus; Lithobates sylvaticus; Pseudacris crucifer; Rana; herpetology; indigenous species; phenology; predation; prey species; risk; salamanders and newts; tadpoles
Abstract:
... Functional redundancy occurs when different predator species have similar effects on the diversity, abundance, and composition of a prey community. When multiple predators coexist, their interactions can alter prey survival and ultimately diversity through emergent multiple-predator effects (MPEs). MPEs can be exacerbated by differences in predator behavior; however, little is known about the magn ...
DOI:
10.1670/20-080

6. Pond water is the principal source of algae that form a symbiosis with embryos of the spotted salamander Ambystoma maculatum: an experimental test

Author:
Cory D. Bishop
Source:
Symbiosis 2022 v.87 no.2 pp. 107-120
ISSN:
0334-5114
Subject:
Ambystoma; DNA; Oophila; algae; autoclaving; eggs; females; genes; oviposition; provenance; salamanders and newts; symbionts; symbiosis
Abstract:
... The unicellular green alga Oophila amblystomatis forms a symbiosis with embryos of the spotted salamander Ambystoma maculatum. The discovery of intracellular invasion of some host cells by the symbiont has raised questions about benefits for the symbiont or the host, including the possibility of vertical symbiont transmission. To determine the provenance of algal cells that reproduce inside indivi ...
DOI:
10.1007/s13199-022-00857-w

7. Transformation of the symbiotic alga Oophila amblystomatis: a new tool for animal-algae symbiosis studies

Author:
Baptiste Genot; John A. Burns
Source:
Symbiosis 2022 v.87 no.2 pp. 143-151
ISSN:
0334-5114
Subject:
Ambystoma; DNA; Oophila; algae; antibiotic resistance; fluorescence; gene expression; genetic engineering; genomics; models; reverse genetics; salamanders and newts; symbiosis
Abstract:
... The ability to conduct reverse genetic studies in symbiotic systems is enabled by transgene expression and transformation of at least one partner. The symbiotic relationship between the yellow spotted salamander, Ambystoma maculatum, and the green alga, Oophila amblystomatis, is a unique model of vertebrate-algae symbiosis. Despite over 130 years of scientific study, there are still many open ques ...
DOI:
10.1007/s13199-022-00861-0

8. Climate‐associated decline of body condition in a fossorial salamander

Author:
Patrick D. Moldowan; Glenn J. Tattersall; Njal Rollinson
Source:
Global change biology 2022 v.28 no.5 pp. 1725-1739
ISSN:
1354-1013
Subject:
Ambystoma; autumn; body condition; decline; ectothermy; egg masses; ice; lakes; metabolism; microhabitats; phenology; refuge habitats; reproductive performance; salamanders and newts; summer; temperature; vigor
Abstract:
... Temperate ectotherms have responded to recent environmental change, likely due to the direct and indirect effects of temperature on key life cycle events. Yet, a substantial number of ectotherms are fossorial, spending the vast majority of their lives in subterranean microhabitats that are assumed to be buffered against environmental change. Here, we examine whether seasonal climatic conditions in ...
DOI:
10.1111/gcb.15766

9. Comparing Genetic and Field-Based Estimates of Population Connectivity in Marbled Salamanders, Ambystoma opacum

Author:
Karine E. Posbic-Leydet; Kelsey L. Glennon; Jolene T. Fisher; Don R. Church; Sheri A. Church
Source:
Diversity 2022 v.14 no.7 pp. -
ISSN:
1424-2818
Subject:
Ambystoma; habitats; mark-recapture studies; microsatellite repeats; population viability
Abstract:
... Estimating connectivity is key for maintaining population viability for pond-breeding amphibians, especially in areas where habitat alterations occur. Here, we used genetic data (microsatellites) to estimate connectivity of marbled salamanders, Ambystoma opacum, among three focal ponds and compared it to field data (capture-mark-recapture estimates) of movement among the same ponds. In addition, w ...
DOI:
10.3390/d14070524

10. Demographic effects of phenological variation in natural populations of two pond-breeding salamanders

Author:
Thomas L. Anderson; Julia E. Earl; Daniel J. Hocking; Michael S. Osbourn; Tracy A. G. Rittenhouse; Jarrett R. Johnson
Source:
Oecologia 2021 v.196 no.4 pp. 1073-1083
ISSN:
0029-8549
Subject:
Ambystoma; climate change; juveniles; larvae; life history; phenology; statistical analysis
Abstract:
... Phenology is a key driver of population and community dynamics. Phenological metrics (e.g., first date that an event occurred) often simplify information from the full phenological distribution, which may undermine efforts to determine the importance of life history events. Data regarding full phenological distributions are especially needed as many species are shifting phenology with climatic cha ...
DOI:
10.1007/s00442-021-05000-y

11. Development and validation of four environmental DNA assays for species of conservation concern in the South-Central United States

Author:
Cameron D. Siler; Elyse S. Freitas; Tamaki Yuri; Lara Souza; Jessa L. Watters
Source:
Conservation genetics resources 2021 v.13 no.1 pp. 35-40
ISSN:
1877-7252
Subject:
Ambystoma; Deirochelys reticularia; Rana; conservation genetics; crayfish; cytochrome b; cytochrome-c oxidase; environmental DNA; frogs; genes; mitochondria; nontarget organisms; nucleotide sequences; rapid methods; reptiles; salamanders and newts; Oklahoma
Abstract:
... We describe the development and testing of qPCR assays to detect four species of amphibians and reptiles of conservation concern in the South Central United States through environmental DNA (eDNA) samples. The target species include the Ringed Salamander (Ambystoma annulatum), Three-toed Amphiuma (Amphiuma tridactylum), Crawfish Frog (Rana areolata), and Chicken Turtle (Deirochelys reticularia). A ...
DOI:
10.1007/s12686-020-01167-3

12. Direct effects influence larval salamander size and density more than indirect effects

Author:
Thomas L. Anderson; Brittany H. Ousterhout; Freya E. Rowland; Dana L. Drake; Jacob J. Burkhart; William E. Peterman
Source:
Oecologia 2021 v.195 no.1 pp. 173-186
ISSN:
0029-8549
Subject:
Ambystoma; body size; equations; food webs; habitats; larvae; observational studies; predation; salamanders and newts; Missouri
Abstract:
... Direct and indirect effects both influence population and community dynamics. The relative strengths of these pathways are often compared using experimental approaches, but their evaluation in situ has been less frequent. We examined how individual and aggregate impacts of direct and indirect effects of species densities, proxies for competition and predation pressure, and habitat variables influe ...
DOI:
10.1007/s00442-020-04820-8

13. Habitat, water quality or geomorphological degradation in the streams: Which is most important for conserving an endemic amphibian of Central Mexico?

Author:
Miguel Aurelio Piñon-Flores; Ireri Suazo-Ortuño; Juan Pablo Ramírez-Herrejón; Rodrigo Moncayo-Estrada; Ek del-Val
Source:
Journal for nature conservation 2021 v.64 pp. 126063
ISSN:
1617-1381
Subject:
Ambystoma; body condition; cattle; deforestation; dissolved oxygen; factor analysis; geomorphology; habitat destruction; habitats; models; natural resources conservation; particle size; pollution; regression analysis; riparian areas; riparian vegetation; rivers; salamanders and newts; stream channels; turbidity; water quality; Mexico
Abstract:
... Amphibians are one of the most vulnerable vertebrate groups globally as a consequence of pollution and habitat degradation. To explore the environmental and anthropogenic variables that are currently influencing amphibian distribution in central Mexico, we used the Mexican endemic Mountain salamander (Ambystoma ordinarium) as a model. In particular, we evaluated which physicochemical water quality ...
DOI:
10.1016/j.jnc.2021.126063

14. Identifying factors linked with persistence of reintroduced populations: Lessons learned from 25 years of amphibian translocations

Author:
Blake R. Hossack; Paige E. Howell; Audrey K. Owens; Cassidi Cobos; Caren S. Goldberg; David Hall; Shaula Hedwall; Susan K. MacVean; Magnus MacCaffery; A. Hunter McCall; Cody D. Mosley; Emily B. Oja; James C. Rorabaugh; Brent H. Sigafus; Michael J. Sredl
Source:
Global ecology and conservation 2022 v.35 pp. e02078
ISSN:
2351-9894
Subject:
Ambystoma; Rana; data collection; dry season; eggs; environmental DNA; extinction; frogs; human resources; landscapes; lentic systems; lotic systems; models; probability; streams; summer; surveys; threatened species; Arizona; New Mexico
Abstract:
... Conservation translocations are increasingly used to help recover imperiled species. However, success of establishing populations remains low, especially for amphibians. Identifying factors associated with translocation success can help increase efficiency and efficacy of recovery efforts. Since the 1990s, several captive and semi-captive facilities have produced Chiricahua Leopard Frogs (Rana chi ...
DOI:
10.1016/j.gecco.2022.e02078

15. The Intersection between Locomotor Performance, Prey Consumption Rate, and Morphology Under Perceived Competition and Predation in Ambystoma maculatum Larvae

Author:
Francisco Javier Zamora-Camacho; Ryan Calsbeek
Source:
South american journal of herpetology 2022 v.24 no.1 pp. 58-66
ISSN:
1808-9798
Subject:
Ambystoma; amphibians; body size; herpetology; mesopredators; predation
Abstract:
... Whereas prey tend to reduce conspicuousness, predators remain active to locate their prey. In particular, mesopredators (i.e., predators situated in the middle of two trophic levels) may be subjected to opposing pressures. Locomotor performance influences predator–prey interactions, and together with behavior can be constrained by morphology. In this study, we test how locomotor performance and fo ...
DOI:
10.2994/SAJH-D-20-00062.1

16. Investigating Acute and Subchronic Effects of Neonicotinoids on Northwestern Salamander Larvae

Author:
Blake E. G. Danis; Vicki L. Marlatt
Source:
Archives of environmental contamination and toxicology 2021 v.80 no.4 pp. 691-707
ISSN:
0090-4341
Subject:
Ambystoma; aquatic organisms; body length; body weight; clothianidin; gene expression; imidacloprid; larvae; pollutants; pollution; salamanders and newts; thiamethoxam; toxicology
Abstract:
... This research investigated the adverse effects of neonicotinoids on the Northwestern salamander (Ambystoma gracile; NWS) after acute and subchronic exposures during early aquatic life stages via whole organism (i.e., growth, development) and molecular (i.e., gene expression) level endpoints. In a 96-h exposure, NWS larvae were exposed to four imidacloprid concentrations (250, 750, 2250, 6750 µg/L) ...
DOI:
10.1007/s00244-021-00840-4

17. Juvenile Salamanders Do Not Exhibit Compensatory Growth Post-metamorphosis in an Experimental Setting

Author:
Freya E. Rowland; Jacob J. Burkhart
Source:
Ichthyology & herpetology 2022 v.110 no.2 pp. 292-298
ISSN:
2766-1512
Subject:
Ambystoma; compensatory growth; habitats; herpetology; ichthyology; juveniles; larvae; metamorphosis; salamanders and newts
Abstract:
... Compensatory growth, where an organism can grow faster during recovery from low resource periods, is a mechanism used by a wide variety of taxa to mitigate previous deficiencies. Here we present experimental data to test whether pond-breeding salamander juveniles raised in different quality larval habitats can catch up to larger cohort members after metamorphosis. We reared larval Spotted Salamand ...
DOI:
10.1643/h2021067

18. Microgeographic evolution of metabolic physiology in a salamander metapopulation

Author:
Sean T. Giery; Dana L. Drake; Mark C. Urban
Source:
Ecology 2021 v.102 no.11 pp. e03488
ISSN:
0012-9658
Subject:
Ambystoma; body weight; evolution; metabolism; population density; salamanders and newts; Connecticut
Abstract:
... The Metabolic Theory of Ecology explains ecological variation spanning taxonomic organization, space, and time based on universal physiological relationships. The theory depends on two core parameters: the normalization constant, a mass‐independent measure of metabolic rate expected to be invariant among similar species, and the scaling coefficient, a measure of metabolic change with body mass com ...
DOI:
10.1002/ecy.3488

19. Occupancy models including local and landscape variables are useful to assess the distribution of a salamander species at risk

Author:
Marco Tulio Oropeza‐Sánchez; Ireri Suazo‐Ortuño; Julieta Benítez‐Malvido; Roberto Munguía‐Steyer
Source:
Population ecology 2021 v.63 no.2 pp. 165-176
ISSN:
1438-3896
Subject:
Ambystoma; dissolved oxygen; dry season; electrical conductivity; extinction; habitats; landscapes; occupations; population ecology; risk; salamanders and newts; seasonal variation; streams; temperature; threatened species; wet season
Abstract:
... Numerous amphibian species are at risk of extinction worldwide. Therefore, reliable estimations of the distribution and abundance of these species are necessary for their conservation. Generally, amphibians are difficult to detect in the wild, which compromises the accuracy of long‐term population monitoring and management. Occupancy models are useful tools to assess how environmental variables, a ...
DOI:
10.1002/1438-390X.12078

20. Phenological Differences in Wood Frog and Spotted Salamander Egg-Mass Onset and Peak Accumulation

Author:
James S. Andrews; Erin Talmage
Source:
Northeastern naturalist 2021 v.28 no.4 pp. 456-461
ISSN:
1092-6194
Subject:
Ambystoma; Lithobates sylvaticus; egg masses; phenology; salamanders and newts; wood; Vermont
Abstract:
... We used egg-mass counts to monitor populations of Lithobates sylvaticus (Wood Frog) and Ambystoma maculatum (Spotted Salamander) at 4 ponds located in central Vermont. We monitored numbers of egg-masses for 15 springs over the course of 20 years (2000–2020). Each year, the number of Wood Frog egg-masses at our breeding sites increased rapidly, over a period of close to 2 weeks. Spotted Salamanders ...
DOI:
10.1656/045.028.0404

21. Skin defenses of North American salamanders against a deadly salamander fungus

Author:
K. E. Pereira; S. K. Woodley
Source:
Animal conservation 2021 v.24 no.4 pp. 552-567
ISSN:
1367-9430
Subject:
Ambystoma; Cryptobranchus alleganiensis; Desmognathus; Plethodon; biodiversity; fungi; pathogens; peptides; salamanders and newts; skin diseases
Abstract:
... The recently emerged fungal pathogen, Batrachochytrium salamandrivorans (Bsal) causes the lethal skin disease chytridiomycosis in susceptible salamander species and is predicted to emerge within the Americas with devastating consequences. Host responses to Bsal are variable but the factors underlying these differences are unknown. To investigate the role of skin‐associated immune defenses against ...
DOI:
10.1111/acv.12666

22. The contributions of individual traits to survival among terrestrial juvenile pond‐breeding salamanders

Author:
Arianne F. Messerman; Manuel Leal
Source:
Functional ecology 2022 v.36 no.3 pp. 516-525
ISSN:
0269-8463
Subject:
Ambystoma; body weight; juveniles; mark-recapture studies; metabolism; population dynamics; surface area
Abstract:
... Individual survival is influenced by interactions between local environmental conditions and an organism's morphological, behavioural and physiological traits. Studies examining the effects of individual phenotypes on survival under variable conditions are relatively rare among early transitional life stages, although the vital rates of these life stages can importantly influence population dynami ...
DOI:
10.1111/1365-2435.13973

23. The effects of intraguild interactions (or lack of) on prey diversity in experimental ponds food webs

Author:
K.M. Stemp; T.L. Anderson; J.M. Davenport
Source:
Food webs 2021 v.29 pp. e00207
ISSN:
2352-2496
Subject:
Ambystoma; Anaxyrus americanus; Boyeria vinosa; community structure; experimental design; food webs; invertebrates; predation; prey species; salamanders and newts; species diversity
Abstract:
... The interactions between top- and intermediate-level predators can have significant effects on community structure of food webs. The direct and indirect effects of top predators not only affect prey communities both negatively (e.g. predation) and positively (e.g. thinning effects), but can also impact intermediate-level predators (via intraguild predation [IGP]). These IGP interactions can have e ...
DOI:
10.1016/j.fooweb.2021.e00207

24. Amphibian population responses to mitigation: Relative importance of wetland age and design

Author:
Emily B. Oja; Leah K. Swartz; Erin Muths; Blake R. Hossack
Source:
Ecological indicators 2021 v.131 pp. 108123
ISSN:
1470-160X
Subject:
Ambystoma; Anaxyrus boreas; Pseudacris; Rana; ecosystems; frogs; habitats; road construction; uncertainty; vegetation cover; wetlands; Wyoming
Abstract:
... Wetland creation is a common practice to mitigate for the loss of natural wetlands. However, there is still uncertainty about how effectively created wetlands replace habitat provided by natural wetlands. This uncertainty is due in part because post-construction monitoring of biological communities, and vertebrates especially, is rare and typically short-term (<5 years). We estimated occupancy of ...
DOI:
10.1016/j.ecolind.2021.108123

25. Asymmetric density‐dependent competition and predation between larval salamanders

Author:
Thomas L. Anderson; Jacob J. Burkhart; Jon M. Davenport
Source:
Freshwater biology 2021 v.66 no.7 pp. 1356-1365
ISSN:
0046-5070
Subject:
Ambystoma; body size; freshwater; interspecific competition; larvae; limnology; metamorphosis; predation
Abstract:
... Body size differences among consumers often lead to asymmetric interactions, with larger individuals typically being stronger competitors and/or predators on small individuals. These types of interaction are particularly exemplified in freshwater pond communities, where substantial size variation exists both within and among species of top consumers. We investigated whether density dependence can ...
DOI:
10.1111/fwb.13721

26. Breeding Effort and Hydroperiod Indicate Habitat Quality of Small, Isolated Wetlands for Amphibians Under Climate Extremes

Author:
Leah D. Nagel; Stacy A. McNulty; Matthew D. Schlesinger; James P. Gibbs
Source:
Wetlands 2021 v.41 no.2 pp. 22
ISSN:
0277-5212
Subject:
Ambystoma; Lithobates sylvaticus; climatic factors; drought; eggs; habitats; juveniles; larvae; salamanders and newts; spring; summer; New York
Abstract:
... The distribution and function of small, temporarily ponded wetlands such as vernal pools are driven by climate variation, especially precipitation. These wetland ecosystems provide important habitat for amphibians, whose breeding effort (egg deposition) is often used to characterize pool habitat quality. However, whether breeding effort consistently predicts larval survival, juvenile production, a ...
DOI:
10.1007/s13157-021-01404-x

27. Created wetlands managed for hydroperiod provide habitat for amphibians in Western Kentucky, USA

Author:
Andrea N. Drayer; Jacquelyn C. Guzy; Rachel Caro; Steven J. Price
Source:
Wetlands ecology and management 2020 v.28 no.3 pp. 543-558
ISSN:
0923-4861
Subject:
Ambystoma; Lithobates; administrative management; canopy; crayfish; fauna; frogs; habitats; hydrology; salamanders and newts; species richness; vegetation; water quality; wetlands; Kentucky
Abstract:
... Loss of wetlands worldwide has necessitated the creation of wetlands to counteract declines of fauna associated with these habitats. Ephemeral wetlands have been disproportionally lost and hydrology of ephemeral wetlands is challenging to restore. Created wetlands with water control structures may be a viable option. In Western Kentucky, we surveyed three ephemeral wetland types [managed open cano ...
DOI:
10.1007/s11273-020-09730-3

28. Distribution and Population Structure of Ambystoma altamirani from the Llano de Lobos, State of México, Mexico

Author:
Zeltzin A. Villanueva Camacho; Geoffrey R. Smith; Raymundo Montoya Ayala; Julio A. Lemos-Espinal
Source:
Western North American naturalist 2020 v.80 no.2 pp. 228-235
ISSN:
1527-0904
Subject:
Ambystoma; anthropogenic activities; eggs; population structure; salamanders and newts; sex ratio; solar radiation; urbanization; Mexico
Abstract:
... Ambystoma altamirani is an endangered salamander found in high mountain streams in the vicinity of México City, and its populations might be threatened by urban growth. Here we report our research on a previously unstudied population of A. altamirani at the Llano de Lobos in the Sierra de las Cruces. The study ran from September 2018 to September 2019. The number of observed individuals was relati ...
DOI:
10.3398/064.080.0210

29. Do Existing Constructed Ponds on Pelee Island, Ontario Match the Habitat Requirements of Endangered Ambystoma Larvae?

Author:
Meghan Ward; Thomas J. Hossie
Source:
Wetlands 2020 v.40 no.6 pp. 2097-2108
ISSN:
0277-5212
Subject:
Ambystoma; burrows; canopy; crayfish; habitats; larval development; plant litter; salamanders and newts; vegetation; wetlands; Ontario
Abstract:
... Global loss of wetlands has significantly reduced the habitat available for amphibians. Various organizations now regularly construct wetlands to provide areas for amphibian reproduction and larval development. To support wetland taxa, including federally-endangered salamanders, numerous ponds have been constructed in Southern Ontario. We examine natural and constructed ponds to address three ques ...
DOI:
10.1007/s13157-020-01364-8

30. Effects of Agricultural Pollutants on Stress Hormones and Viral Infection in Larval Salamanders

Author:
Drew R. Davis; Katie J. Ferguson; Matthew S. Schwarz; Jacob L. Kerby
Source:
Wetlands 2020 v.40 no.3 pp. 577-586
ISSN:
0277-5212
Subject:
Ambystoma; Ranavirus; biomarkers; corticosterone; crop production; habitat destruction; immunosuppression; larvae; pollution; rowcrops; South Dakota
Abstract:
... Declines in amphibians are a global problem, influenced by complex local factors. While many factors contribute to these declines, much attention has been focused on the roles of contaminants and pathogens. Throughout eastern South Dakota, row-crop farming has contributed to habitat degradation for many amphibians, often through increases in environmental contaminants. For two years we visited fou ...
DOI:
10.1007/s13157-019-01207-1

31. Estimating critical habitat based on year-round movements of the endangered Jefferson Salamander (Ambystoma jeffersonianum) and their unisexual dependents

Author:
S.G. Van Drunen; J.E. Linton; J.P. Bogart; J. McCarter; H. Fotherby; A. Sandilands; D.R. Norris
Source:
Canadian journal of zoology 2020 v.98 no.2 pp. 117-126
ISSN:
1480-3283
Subject:
Ambystoma; breeding; endangered species; habitat conservation; habitat preferences; habitats; overwintering; ponds; radio telemetry; risk; salamanders and newts; spring; summer; Canada
Abstract:
... Habitat protection is a key component of endangered species conservation, but critical habitat designations are often based on limited data or habitat use during only a portion of a species’ life cycle. Protected habitat around breeding pools for the endangered Jefferson Salamander (Ambystoma jeffersonianum (Green, 1827)) and their unisexual dependents (Ambystoma laterale – (2) jeffersonianum) is ...
DOI:
10.1139/cjz-2019-0228

32. Evaluation of created wetlands as amphibian habitat on a reforested surface mine

Author:
Michaela Lambert; Andrea N. Drayer; Wendy Leuenberger; Steven J. Price; Christopher Barton
Source:
Ecological engineering 2021 v.171 pp. 106386
ISSN:
0925-8574
Subject:
Ambystoma; Notophthalmus viridescens; Rana clamitans; canopy; ecosystems; forests; frogs; habitat destruction; habitats; landscapes; salamanders and newts; site preparation; streams; surface area; vegetation cover; water quality; wetlands; Monongahela National Forest; West Virginia
Abstract:
... Wetlands created within disturbed landscapes may be an important key to restoring lost ecosystem functions. Reclaimed mines provide an opportunity to create wetlands and restore natural features within a disturbed landscape while benefiting amphibians, a taxa affected by habitat loss. A large-scale restoration effort within the Monongahela National Forest, West Virginia, USA has resulted in the cr ...
DOI:
10.1016/j.ecoleng.2021.106386

33. Functional Responses of Larval Marbled Salamanders (Ambystoma opacum) and Adult Lesser Sirens (Siren intermedia) on Anuran Tadpole Prey

Author:
Thomas L. Anderson; Kenzi M. Stemp; Jon M. Davenport
Source:
Copeia 2020 v.108 no.2 pp. 341-346
ISSN:
0045-8511
Subject:
Ambystoma; Anura; adults; body size; mortality; predation; tadpoles
Abstract:
... Predation can have strong effects on the structure of pond-breeding amphibian communities. Many factors can influence the outcome of predator–prey interactions, including differences in densities, identities, and body sizes of both predator and prey. These different mediating factors can impart synergistic impacts on predation rates, though distinguishing such interactions among multiple factors a ...
DOI:
10.1643/CE-19-212

34. Inhibition of Batrachochytrium dendrobatidis Infection by Skin Bacterial Communities in Wild Amphibian Populations

Author:
Bisbrian Nava-González; Ireri Suazo-Ortuño; Perla Bibian López; Yurixhi Maldonado-López; Leonel Lopez-Toledo; Luciana Raggi; Gabriela Parra-Olea; Javier Alvarado-Díaz; Bruno Gómez-Gil
Source:
Microbial ecology 2021 v.82 no.3 pp. 666-676
ISSN:
0095-3628
Subject:
Ambystoma; Batrachochytrium dendrobatidis; Lithobates; Pseudomonas; Stenotrophomonas; altitude; bacterial communities; enzootic diseases; frogs; fungi; hosts; pathogens; salamanders and newts; taxonomy; Mexico
Abstract:
... Skin-associated bacteria are known to inhibit infection by the fungal pathogen Batrachochytrium dendrobatidis (Bd) in amphibians. It has also been postulated that skin-associated bacterial community is related to Bd infection intensity. However, our understanding of host microbial dynamics and their importance in regulating Bd intensity is limited. We analyzed Bd infection and skin-associated bact ...
DOI:
10.1007/s00248-021-01706-x

35. Macrogeographic variation of a pond predator's top‐down effects in a common garden environment

Author:
Kenzi M. Stemp; Thomas L. Anderson; Jon M. Davenport
Source:
Population ecology 2021 v.63 no.1 pp. 5-13
ISSN:
1438-3896
Subject:
Ambystoma; biodiversity; geographical distribution; geographical variation; keystone species; life history; population ecology; predation; prey species; salamanders and newts; spring; Mississippi; North Carolina; Ohio
Abstract:
... Geographic variation in species behavior and life history has been well documented in biology. Species with wide geographic distributions (i.e., across a continent) but small home ranges (i.e., <1 km²) likely experience wide variability in abiotic environments across the entirety of their range, possibly exhibiting strong local adaptation. Understanding variation across a large geographic scale is ...
DOI:
10.1002/1438-390X.12071

36. Metapopulation genetics of endangered reticulated flatwoods salamanders (Ambystoma bishopi) in a dynamic and fragmented landscape

Author:
Alexander Wendt; Carola A. Haas; Thomas Gorman; James H. Roberts
Source:
Conservation genetics 2021 v.22 no.4 pp. 551-567
ISSN:
1566-0621
Subject:
Ambystoma; conservation genetics; ecosystems; endangered species; fire suppression; genetic variation; habitat destruction; habitat fragmentation; habitats; juveniles; land use change; microsatellite repeats; population dynamics; population structure; salamanders and newts; savannas; Southeastern United States
Abstract:
... The reticulated flatwoods salamander (Ambystoma bishopi), an endangered species endemic to the longleaf-pine savanna ecosystem of the southeastern U.S., persists in a small number of remnant habitat patches. Breeding ponds and associated populations are threatened by habitat loss, degradation, and fragmentation stemming from fire suppression and land conversion. Understanding influences on populat ...
DOI:
10.1007/s10592-021-01360-3

37. Mixed support for gene flow as a constraint to local adaptation and contributor to the limited geographic range of an endemic salamander

Author:
Steven J. Micheletti; Andrew Storfer
Source:
Molecular ecology 2020 v.29 no.21 pp. 4091-4101
ISSN:
0962-1083
Subject:
Ambystoma; edge effects; gene flow; geographical distribution; mortality; salamanders and newts
Abstract:
... Understanding mechanisms that underlie species range limits is at the core of evolutionary ecology. Asymmetric gene flow between larger core populations and smaller edge populations can swamp local adaptation at the range edge and inhibit further range expansion. However, empirical tests of this theory are exceedingly rare. We tested the hypothesis that asymmetric gene flow can constrain local ada ...
DOI:
10.1111/mec.15627

38. Modelling the contribution of ephemeral wetlands to landscape connectivity

Author:
Corrie Allen; Rodolphe Gonzales; Lael Parrott
Source:
Ecological modelling 2020 v.419 pp. 108944
ISSN:
0304-3800
Subject:
Ambystoma; amphibians; breeding sites; case studies; climate; climate change; endangered species; habitat connectivity; habitat destruction; highlands; land use; landscapes; models; wetland conservation; wetlands; British Columbia
Abstract:
... Habitat loss and fragmentation continue to drive declines of amphibian populations. Maintaining connectivity between aquatic and terrestrial habitats and across wetlands is critical to amphibian conservation, particularly in regions where climate change may exacerbate habitat loss. Our objective was to study the impact of climate- and human-driven losses in ephemeral wetlands on functional connect ...
DOI:
10.1016/j.ecolmodel.2020.108944

39. Multi-organ transcriptomic landscape of Ambystoma velasci metamorphosis

Author:
Janet Palacios-Martinez; Juan Caballero-Perez; Annie Espinal-Centeno; Gilberto Marquez-Chavoya; Hilda Lomeli; Enrique Salas-Vidal; Denhi Schnabel; Jesus Chimal-Monroy; Alfredo Cruz-Ramirez
Source:
Developmental biology 2020 v.466 no.1-2 pp. 22-35
ISSN:
0012-1606
Subject:
Ambystoma; angiogenesis; apoptosis; cardiomyocytes; extracellular matrix; gene expression regulation; keratin; lungs; metamorphosis; salamanders and newts; surfactant proteins; transcription (genetics); transcriptome
Abstract:
... Metamorphosis is a postembryonic developmental process that involves morphophysiological and behavioral changes, allowing organisms to adapt into a novel environment. In some amphibians, aquatic organisms undergo metamorphosis to adapt in a terrestrial environment. In this process, these organisms experience major changes in their circulatory, respiratory, digestive, excretory and reproductive sys ...
DOI:
10.1016/j.ydbio.2020.08.002

40. Multiscale resistant kernel surfaces derived from inferred gene flow: An application with vernal pool breeding salamanders

Author:
Kristopher J. Winiarski; William E. Peterman; Andrew R. Whiteley; Kevin McGarigal
Source:
Molecular ecology resources 2020 v.20 no.1 pp. 97-113
ISSN:
1755-098X
Subject:
Ambystoma; analytical methods; area; breeding; empirical research; forest habitats; forest land; gene flow; highlands; land cover; landscape genetics; landscapes; models; salamanders and newts; seeds; spatial data; surfaces; topography; traffic; vegetation index; vernal pools
Abstract:
... The importance of assessing spatial data at multiple scales when modelling species–environment relationships has been highlighted by several empirical studies. However, no landscape genetics studies have optimized landscape resistance surfaces by evaluating relevant spatial predictors at multiple spatial scales. Here, we model multiscale/layer landscape resistance surfaces to estimate resistance t ...
DOI:
10.1111/1755-0998.13089

41. Oophila is monophyletic within a three-taxon eukaryotic microbiome in egg masses of the salamander Ambystoma maculatum

Author:
E. Jurga; L. Graham; C.D. Bishop
Source:
Symbiosis 2020 v.81 no.2 pp. 187-199
ISSN:
0334-5114
Subject:
Ambystoma; Oophila; algae; competitive exclusion; egg masses; eggs; eukaryotic cells; habitats; microbiome; monophyly; protists; salamanders and newts; sequence diversity
Abstract:
... Tests of hypotheses of vertical transmission and competitive exclusion for particular resource-exchange mutualisms require assessments of the number and identity of partners. Unicellular green algae form a symbiosis with embryos of the northeastern yellow spotted salamander Ambystoma maculatum. The extent to which the composition of egg mass-associated taxa depends on temporal or spatial factors i ...
DOI:
10.1007/s13199-020-00693-w

42. Relative Toxicity and Sublethal Effects of NaCl and Energy-Related Saline Wastewaters on Prairie Amphibians

Author:
Brian J. Tornabene; Creagh W. Breuner; Blake R. Hossack
Source:
Aquatic toxicology 2020 v.228 pp. 105626
ISSN:
0166-445X
Subject:
Ambystoma; Lithobates pipiens; Pseudacris; acute toxicity; energy; freshwater; frogs; larvae; salamanders and newts; salinity; sodium chloride; toxicology; wastewater
Abstract:
... Increasing salinity in freshwater environments is a growing problem due both to the negative influences of salts on ecosystems and their accumulation and persistence in environments. Two major sources of increased salinity from sodium chloride salts (NaCl) are saline wastewaters co-produced during energy production (herein, wastewaters) and road salts. Effects of road salts have received more atte ...
DOI:
10.1016/j.aquatox.2020.105626

43. Batrachochytrium salamandrivorans elicits acute stress response in spotted salamanders but not infection or mortality

Author:
K. Barnhart; M. C. Bletz; B. LaBumbard; A. Tokash‐Peters; C. R. Gabor; D. C. Woodhams
Source:
Animal conservation 2020 v.23 no.5 pp. 533-546
ISSN:
1367-9430
Subject:
Ambystoma; Batrachochytrium; biodiversity; corticosterone; developmental stages; emerging diseases; environmental factors; immune response; mortality; pathogenicity; pathogens; risk; risk assessment; salamanders and newts; stress response; temperature; thyroid hormones; North America; South America
Abstract:
... The emerging fungal pathogen Batrachochytrium salamandrivorans (Bsal) is a major threat to amphibian species worldwide with potential to infect many species if it invades salamander biodiversity hotspots in the Americas. Bsal can cause the disease chytridiomycosis, and it is important to assess the risk of Bsal‐induced chytridiomycosis to species in North America. We evaluated the susceptibility t ...
DOI:
10.1111/acv.12565

44. Characterization of Dermotheca sp. Infection in a midwestern state-endangered salamander (Ambystoma platineum) and a co-occurring common species (Ambystoma texanum)

Author:
Laura Adamovicz; Daniel B. Woodburn; Stephany Virrueta Herrera; Kelsey Low; Christopher A. Phillips; Andrew R. Kuhns; John A. Crawford; Matthew C. Allender
Source:
Parasitology 2020 v.147 no.3 pp. 360-370
ISSN:
1469-8161
Subject:
Ambystoma; Dermocystida; animal diseases; biopsy; epidemiology; histology; morbidity; mortality; necropsy; nucleotide sequences; parasites; pathogens; phylogeny; ribosomal DNA; ribosomal RNA; salamanders and newts; sporangia; wetlands; Illinois
Abstract:
... Ichthyosporean parasites (order Dermocystida) can cause morbidity and mortality in amphibians, but their ecology and epidemiology remain understudied. We investigated the prevalence, gross and histologic appearance, and molecular phylogeny of a novel dermocystid in the state-endangered silvery salamander (Ambystoma platineum) and the co-occurring, non-threatened small-mouthed salamander (Ambystoma ...
DOI:
10.1017/S0031182019001677

45. Discerning the Environmental Drivers of Annual Migrations in an Endangered Amphibian

Author:
George C. Brooks; Jennifer A. Smith; Thomas A. Gorman; Carola A. Haas
Source:
Copeia 2019 v.107 no.2 pp. 270-276
ISSN:
0045-8511
Subject:
Ambystoma; breeding; breeding sites; climate change; endangered species; environmental factors; models; phenology; prediction; rain; salamanders and newts; temperature; wetlands; Florida
Abstract:
... The prevalence of studies that discern the drivers of animal migrations is increasing exponentially, in line with raised concerns over climate-driven shifts in phenological patterns. Amphibians that breed in ephemeral wetlands are particularly vulnerable owing to the stochastic nature of their breeding habitat and high survival and reproductive costs associated with untimely migrations. Knowledge ...
DOI:
10.1643/CH-18-068

46. Egg mass polymorphism in Ambystoma maculatum is not associated with larval performance or survival, or with cell density of the algal symbiont Oophila amblystomatis

Author:
Mischa D’Errico; Caroline Kennedy; Rebecca E. Hale
Source:
Evolutionary ecology 2020 v.34 no.6 pp. 981-997
ISSN:
0269-7653
Subject:
Ambystoma; Oophila; algae; color; egg masses; eggs; embryogenesis; frequency dependent selection; heterozygosity; larvae; phenotype; salamanders and newts; survival rate; symbionts
Abstract:
... Phenotypic polymorphisms are common in nature, but the mechanism through which natural selection maintains them can be difficult to identify. Heterozygote advantage, negative frequency-dependent selection, and variation in selective environment each can explain polymorphisms in some systems. Although first observed nearly 100 years ago, the egg mass color polymorphism in the spotted salamander (Am ...
DOI:
10.1007/s10682-020-10083-9

47. Estimating Survival for Elusive Juvenile Pond‐Breeding Salamanders

Author:
Arianne F. Messerman; Raymond D. Semlitsch; Manuel Leal
Source:
journal of wildlife management 2020 v.84 no.3 pp. 562-575
ISSN:
0022-541X
Subject:
Ambystoma; Bayesian theory; adults; biodiversity; juveniles; mark-recapture studies; phylogeny; population growth; population viability; probability; salamanders and newts; survival rate
Abstract:
... Juvenile vital rates have important effects on population dynamics for many species, but this demographic is often difficult to locate and track. As such, we frequently lack reliable estimates of juvenile survival, which are necessary for accurately assessing population stability and potential management approaches to conserve biodiversity. We estimated survival rates for elusive juveniles of 3 sp ...
DOI:
10.1002/jwmg.21815

48. Estimating occurrence, prevalence, and detection of amphibian pathogens: insights from occupancy models

Author:
Brittany A. Mosher; Adrianne B. Brand; Amber N. M. Wiewel; David A. W. Miller; Matthew J. Gray; Debra L. Miller; Evan H. Campbell Grant
Source:
Journal of wildlife diseases 2019 v.55 no.3 pp. 563-575
ISSN:
0090-3558
Subject:
Ambystoma; Lithobates sylvaticus; Ranavirus; case studies; conservation areas; landscapes; larvae; liver; microbial detection; models; pathogen occurrence; pathogens; planning; salamanders and newts; sampling; tail; Maryland
Abstract:
... Understanding the distribution of pathogens across landscapes and their prevalence within host populations is a common aim of wildlife managers. Despite the need for unbiased estimates of pathogen occurrence and prevalence for planning effective management interventions, many researchers fail to account for imperfect pathogen detection. Instead raw data are often reported, which may lead to ineffe ...
DOI:
10.7589/2018-02-042

49. Evaluating the assumptions of population projection models used for conservation

Author:
Julia E. Earl
Source:
Biological conservation 2019 v.237 pp. 145-154
ISSN:
0006-3207
Subject:
Ambystoma; Anaxyrus boreas; Lithobates sylvaticus; amphibians; anthropogenic stressors; issues and policy; life history; models; natural resources conservation
Abstract:
... Population projection models, such as matrix and integral projection models, are used increasingly to understand potential effects of anthropogenic stressors and inform conservation actions. However, vital rate and life history information needed to create robust population models is often missing or incomplete, making assumptions about parameters and population processes necessary. Understanding ...
DOI:
10.1016/j.biocon.2019.06.034

50. Factors Influencing the Occupancy and Abundance of Streamside Salamander (Ambystoma barbouri) in Kentucky Streams

Author:
Andrea N. Drayer; Jacquelyn C. Guzy; Steven J. Price
Source:
Journal of herpetology 2020 v.54 no.3 pp. 299-305
ISSN:
1937-2418
Subject:
Ambystoma; agricultural land; forests; geographical distribution; herpetology; hydrochemistry; land cover; salamanders and newts; sodium; streams; urban development; watersheds; Kentucky
Abstract:
... For many amphibian species of conservation concern, our understanding of drivers of distribution and abundance are based on data collected at only a few localities. Thus, landscape-scale efforts are needed to better inform management and species conservation. The Streamside Salamander (Ambystoma barbouri) is a global conservation priority because of its restricted geographic distribution and presu ...
DOI:
10.1670/19-015