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Size and Cycle in Dusky Salamanders. J HERPETOL 2022. [DOI: 10.1670/22-022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Means JC, Hennen DA, Marek PE. A revision of the minor species group in the millipede genus Nannaria Chamberlin, 1918 (Diplopoda, Polydesmida, Xystodesmidae). Zookeys 2021; 1030:1-180. [PMID: 33958904 DOI: 10.3897/zookeys.1030.62544] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/08/2021] [Indexed: 11/12/2022] Open
Abstract
Millipedes in the family Xystodesmidae (Polydesmida) are often referred to as "colorful, flat-backed millipedes" for their bright aposematic coloration and tendency to form Müllerian mimicry rings in the Appalachian region. However, there are many species of Xystodesmidae that do not display colorful warning patterns, and instead have more cryptic appearances. Perhaps for this reason, groups such as the genus Nannaria have remained understudied, despite containing a large number of undescribed species. Before his death in 2012, R. L. Hoffman worked on a revision of the genus Nannaria, and synthesized material and drawings since 1949. Here the work is continued, inferring a molecular phylogeny of the Nannariini (Nannaria + Oenomaea pulchella), and revealing two clades within the genus. One clade is named the minor species group, and the second is the wilsoni species group. This revision, using a molecular phylogenetic framework, is the basis for descriptions of 35 new species in the minor species group. A multi-gene molecular phylogeny is used to make taxonomic changes in the taxon. Eleven putative species of Nannaria are also illustrated and discussed. Additionally, detailed collection, natural history and habitat notes, distribution maps, and a key to species of the Nannaria minor species group are provided. These items are synthesized as a basis for a revision of the genus, which hopefully will aid conservation and evolutionary investigations of this cryptic and understudied group.
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Affiliation(s)
- Jackson C Means
- Virginia Tech, Department of Entomology, Blacksburg, Virginia 24061, USA Virginia Tech Blacksburg United States of America
| | - Derek A Hennen
- Virginia Tech, Department of Entomology, Blacksburg, Virginia 24061, USA Virginia Tech Blacksburg United States of America
| | - Paul E Marek
- Virginia Tech, Department of Entomology, Blacksburg, Virginia 24061, USA Virginia Tech Blacksburg United States of America
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Dertien JS, Self S, Ross BE, Barrett K, Baldwin RF. The relationship between biodiversity and wetland cover varies across regions of the conterminous United States. PLoS One 2020; 15:e0232052. [PMID: 32357185 PMCID: PMC7194442 DOI: 10.1371/journal.pone.0232052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/06/2020] [Indexed: 11/23/2022] Open
Abstract
Identifying the factors that determine the spatial distribution of biodiversity is a major focus of ecological research. These factors vary with scale from interspecific interactions to global climatic cycles. Wetlands are important biodiversity hotspots and contributors of ecosystem services, but the association between proportional wetland cover and species richness has shown mixed results. It is not well known as to what extent there is a relationship between proportional wetland cover and species richness, especially at the sub-continental scale. We used the National Wetlands Inventory (NWI) to model wetland cover for the conterminous United States and the National Land Cover Database to estimate wetland change between 2001 and 2011. We used a Bayesian spatial Poisson model to estimate a spatially varying coefficient surface describing the effect of proportional wetland cover on the distribution of amphibians, birds, mammals, and reptiles and the cumulative distribution of terrestrial endemic species. Species richness and wetland cover were significantly correlated, and this relationship varied both spatially and by taxonomic group. Rather than a continental-scale association, however, we found that this relationship changed more closely among ecoregions. The species richness of each of the five groups was positively associated with wetland cover in some or all of the Great Plains; additionally, a positive association was found for mammals in the Southeastern Plains and Piedmont of the eastern U.S. Model results indicated negative association especially in the Cold Deserts and Northern Lakes & Forests of Minnesota and Wisconsin, though these varied greatly between groups. Our results highlight the need for wetland conservation initiatives that focus efforts at the level II and III ecoregional scale rather than along political boundaries.
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Affiliation(s)
- Jeremy S. Dertien
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, South Carolina, United States of America
| | - Stella Self
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, United States of America
| | - Beth E. Ross
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, South Carolina, United States of America
- U.S. Geological Survey, South Carolina Cooperative Fish and Wildlife Research Unit, Clemson University, Clemson, South Carolina, United States of America
| | - Kyle Barrett
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, South Carolina, United States of America
| | - Robert F. Baldwin
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, South Carolina, United States of America
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Jaramillo AF, De La Riva I, Guayasamin JM, Chaparro JC, Gagliardi-Urrutia G, Gutiérrez RC, Brcko I, Vilà C, Castroviejo-Fisher S. Vastly underestimated species richness of Amazonian salamanders (Plethodontidae: Bolitoglossa) and implications about plethodontid diversification. Mol Phylogenet Evol 2020; 149:106841. [PMID: 32305511 DOI: 10.1016/j.ympev.2020.106841] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 11/29/2022]
Abstract
We present data showing that the number of salamander species in Amazonia is vastly underestimated. We used DNA sequences of up to five genes (3 mitochondrial and 2 nuclear) of 366 specimens, 189 corresponding to 89 non-Amazonian nominal species and 177 Amazonian specimens, including types or topotypes, of eight of the nine recognized species in the region. By including representatives of all known species of Amazonian Bolitoglossa, except for one, and 73% of the currently 132 recognized species of the genus, our dataset represents the broadest sample of Bolitoglossa species, specimens, and geographic localities studied to date. We performed phylogenetic analyses using parsimony with tree-alignment and maximum likelihood (ML) with similarity alignment, with indels as binary characters. Our optimal topologies were used to delimit lineages that we assigned to nominal species and candidate new species following criteria that maximize the consilience of the current species taxonomy, monophyly, gaps in branch lengths, genetic distances, and geographic distribution. We contrasted the results of our species-delimitation protocol with those of Automated Barcode Gap Discovery (ABGD) and multi-rate Poisson Tree Processes (mPTP). Finally, we inferred the historical biogeography of South American salamanders by dating the trees and using dispersal-vicariance analysis (DIVA). Our results revealed a clade including almost all Amazonian salamanders, with a topology incompatible with just the currently recognized nine species. Following our species-delimitation criteria, we identified 44 putative species in Amazonia. Both ABGD and mPTP inferred more species than currently recognized, but their numbers (23-49) and limits vary. Our biogeographic analysis suggested a stepping-stone colonization of the Amazonian lowlands from Central America through the Chocó and the Andes, with several late dispersals from Amazonia back into the Andes. These biogeographic events are temporally concordant with an early land bridge between Central and South America (~10-15 MYA) and major landscape changes in Amazonia during the late Miocene and Pliocene, such as the drainage of the Pebas system, the establishment of the Amazon River, and the major orogeny of the northern Andes.
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Affiliation(s)
- Andrés F Jaramillo
- Pos-Graduação em Ecologia e Evolução da Biodiversidade, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Laboratorio de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil.
| | | | - Juan M Guayasamin
- Laboratorio de Biología Evolutiva, Instituto BIOSFERA-USFQ, Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito (USFQ), Ecuador; University of North Carolina at Chapel Hill, Department of Biology, USA
| | - Juan C Chaparro
- Museo de Biodiversidad del Perú (MUBI), Peru; Museo de Historia Natural de la Universidad Nacional de San Antonio Abad del Cusco, Peru
| | - Giussepe Gagliardi-Urrutia
- Pos-Graduação em Ecologia e Evolução da Biodiversidade, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Laboratorio de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Peruvian Center for Biodiversity and Conservation (PCB&C), Peru; Dirección de Investigación en Diversidad Biológica Terrestre Amazónica, Instituto de Investigaciones de la Amazonía Peruana (IIAP), Peru
| | - Roberto C Gutiérrez
- Museo de Historia Natural de la Universidad Nacional de San Agustín de Arequipa (MUSA), Peru
| | - Isabela Brcko
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Brazil
| | - Carles Vilà
- Estación Biológica de Doñana (EBD-CSIC), Spain
| | - Santiago Castroviejo-Fisher
- Pos-Graduação em Ecologia e Evolução da Biodiversidade, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Laboratorio de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Department of Herpetology, American Museum of Natural History, USA
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Farallo VR, Muñoz MM, Uyeda JC, Miles DB. Scaling between macro- to microscale climatic data reveals strong phylogenetic inertia in niche evolution in plethodontid salamanders. Evolution 2020; 74:979-991. [PMID: 32190909 DOI: 10.1111/evo.13959] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/22/2019] [Accepted: 02/11/2020] [Indexed: 12/25/2022]
Abstract
Macroclimatic niches are indirect and potentially inadequate predictors of the realized environmental conditions that many species experience. Consequently, analyses of niche evolution based on macroclimatic data alone may incompletely represent the evolutionary dynamics of species niches. Yet, understanding how an organisms' climatic (Grinnellian) niche responds to changing macroclimatic conditions is of vital importance for predicting their potential response to global change. In this study, we integrate microclimatic and macroclimatic data across 26 species of plethodontid salamanders to portray the relationship between microclimatic niche evolution in response to changing macroclimate. We demonstrate stronger phylogenetic signal in microclimatic niche variables than at the macroclimatic scale. Even so, we find that the microclimatic niche tracks climatic changes at the macroscale, but with a phylogenetic lag at million-year timescales. We hypothesize that behavioral tracking of the microclimatic niche over space and phenology generates the lag: salamanders preferentially select microclimates similar to their ancestral conditions rather than adapting with changes in physiology. We demonstrate that macroclimatic variables are weak predictors of niche evolution and that incorporating spatial scale into analyses of niche evolution is critical for predicting responses to climate change.
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Affiliation(s)
- Vincent R Farallo
- Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, Connecticut, 06511.,Department of Biological Sciences, Ohio Center for Ecological and Evolutionary Studies, Ohio University, Athens, Ohio, 45701
| | - Martha M Muñoz
- Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, Connecticut, 06511
| | - Josef C Uyeda
- Department of Biological Sciences, Virginia Tech, 926 West Campus Drive, Blacksburg, Virginia, 24061
| | - Donald B Miles
- Department of Biological Sciences, Ohio Center for Ecological and Evolutionary Studies, Ohio University, Athens, Ohio, 45701
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Pustilnik JD. Vertebrate Carrion in Land Snail Diets: First Observation of Amphibian (Plethodontid Salamander) Consumption by a Terrestrial Snail in Southern Appalachia. SOUTHEAST NAT 2020. [DOI: 10.1656/058.019.0106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Jeremy D. Pustilnik
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, 14850;
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Joven A, Elewa A, Simon A. Model systems for regeneration: salamanders. Development 2019; 146:146/14/dev167700. [PMID: 31332037 DOI: 10.1242/dev.167700] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/28/2019] [Indexed: 02/03/2023]
Abstract
Salamanders have been hailed as champions of regeneration, exhibiting a remarkable ability to regrow tissues, organs and even whole body parts, e.g. their limbs. As such, salamanders have provided key insights into the mechanisms by which cells, tissues and organs sense and regenerate missing or damaged parts. In this Primer, we cover the evolutionary context in which salamanders emerged. We outline the varieties of mechanisms deployed during salamander regeneration, and discuss how these mechanisms are currently being explored and how they have advanced our understanding of animal regeneration. We also present arguments about why it is important to study closely related species in regeneration research.
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Affiliation(s)
- Alberto Joven
- Karolinska Institute, Department of Cell and Molecular Biology, Biomedicum, Solnavägen 9, 17163 Stockolm, Sweden
| | - Ahmed Elewa
- Karolinska Institute, Department of Cell and Molecular Biology, Biomedicum, Solnavägen 9, 17163 Stockolm, Sweden
| | - András Simon
- Karolinska Institute, Department of Cell and Molecular Biology, Biomedicum, Solnavägen 9, 17163 Stockolm, Sweden
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Markle TM, Kozak KH. Low acclimation capacity of narrow-ranging thermal specialists exposes susceptibility to global climate change. Ecol Evol 2018; 8:4644-4656. [PMID: 29760904 PMCID: PMC5938462 DOI: 10.1002/ece3.4006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 01/23/2018] [Accepted: 02/11/2018] [Indexed: 01/20/2023] Open
Abstract
Thermal acclimation is hypothesized to offer a selective advantage in seasonal habitats and may underlie disparities in geographic range size among closely-related species with similar ecologies. Understanding this relationship is also critical for identifying species that are more sensitive to warming climates. Here, we study North American plethodontid salamanders to investigate whether acclimation ability is associated with species' latitudinal extents and the thermal range of the environments they inhabit. We quantified variation in thermal physiology by measuring standard metabolic rate (SMR) at different test and acclimation temperatures for 16 species of salamanders with varying latitudinal extents. A phylogenetically-controlled Markov chain Monte Carlo generalized linear mixed model (MCMCglmm) was then employed to determine whether there are differences in SMR between wide- and narrow-ranging species at different acclimation temperatures. In addition, we tested for a relationship between the acclimation ability of species and the environmental temperature ranges they inhabit. Further, we investigated if there is a trade-off between critical thermal maximum (CTMax) and thermal acclimation ability. MCMCglmm results show a significant difference in acclimation ability between wide and narrow-ranging temperate salamanders. Salamanders with wide latitudinal distributions maintain or slightly increase SMR when subjected to higher test and acclimation temperatures, whereas several narrow-ranging species show significant metabolic depression. We also found significant, positive relationships between acclimation ability and environmental thermal range, and between acclimation ability and CTMax. Wide-ranging salamander species exhibit a greater capacity for thermal acclimation than narrow-ranging species, suggesting that selection for acclimation ability may have been a key factor enabling geographic expansion into areas with greater thermal variability. Further, given that narrow-ranging salamanders are found to have both poor acclimation ability and lower tolerance to warm temperatures, they are likely to be more susceptible to environmental warming associated with anthropogenic climate change.
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Affiliation(s)
- Tricia M. Markle
- Department of Fisheries, Wildlife, & Conservation BiologyBell Museum of Natural HistoryUniversity of MinnesotaSt PaulMNUSA
| | - Kenneth H. Kozak
- Department of Fisheries, Wildlife, & Conservation BiologyBell Museum of Natural HistoryUniversity of MinnesotaSt PaulMNUSA
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Woodley SK, Costa JT, Bruce RC. Introduction to the Special Highlands Conference on Plethodontid Salamander Biology. HERPETOLOGICA 2017. [DOI: 10.1655/herpetologica-d-17-00020.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Sarah K. Woodley
- Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| | - James T. Costa
- Highlands Biological Station, 265 N. Sixth Street, Highlands, NC 28741, USA and Department of Biology, Western Carolina University, Cullowhee, NC 28723, USA
| | - Richard C. Bruce
- Highlands Biological Station, 265 N. Sixth Street, Highlands, NC 28741, USA and Department of Biology, Western Carolina University, Cullowhee, NC 28723, USA
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