The Purple Salamander (Gyrinophilus porphyriticus) in Quebec

Copeia ◽  
1947 ◽  
Vol 1947 (1) ◽  
pp. 68 ◽  
Author(s):  
Charles E. Hall
Keyword(s):  
Gyrinophilus Porphyriticus

scholarly journals Hydrologic variability contributes to reduced survival through metamorphosis in a stream salamander

2019 ◽  
Vol 116 (39) ◽  
pp. 19563-19570 ◽  
Author(s):  
Winsor H. Lowe ◽  
Leah K. Swartz ◽  
Brett R. Addis ◽  
Gene E. Likens
Keyword(s):  
New Hampshire ◽  
Environmental Variability ◽  
Adult Stage ◽  
Larval Abundance ◽  
Freshwater Species ◽  
Diverse Group ◽  
Hubbard Brook Experimental Forest ◽  
Stream Discharge ◽  
Hydrologic Variability ◽  
Gyrinophilus Porphyriticus

Changes in the amount, intensity, and timing of precipitation are increasing hydrologic variability in many regions, but we have little understanding of how these changes are affecting freshwater species. Stream-breeding amphibians—a diverse group in North America—may be particularly sensitive to hydrologic variability during aquatic larval and metamorphic stages. Here, we tested the prediction that hydrologic variability in streams decreases survival through metamorphosis in the salamander Gyrinophilus porphyriticus, reducing recruitment to the adult stage. Using a 20-y dataset from Merrill Brook, a stream in northern New Hampshire, we show that abundance of G. porphyriticus adults has declined by ∼50% since 1999, but there has been no trend in larval abundance. We then tested whether hydrologic variability during summers influences survival through metamorphosis, using capture–mark–recapture data from Merrill Brook (1999 to 2004) and from 4 streams in the Hubbard Brook Experimental Forest (2012 to 2014), also in New Hampshire. At both sites, survival through metamorphosis declined with increasing variability of stream discharge. These results suggest that hydrologic variability reduces the demographic resilience and adaptive capacity of G. porphyriticus populations by decreasing recruitment of breeding adults. They also provide insight on how increasing hydrologic variability is affecting freshwater species, and on the broader effects of environmental variability on species with vulnerable metamorphic stages.

Ancient river systems and phylogeographical structure in the spring salamander, Gyrinophilus porphyriticus

2015 ◽  
Vol 43 (4) ◽  
pp. 639-652 ◽  
Author(s):  
Shawn R. Kuchta ◽  
Michael Haughey ◽  
Addison H. Wynn ◽  
Jeremy F. Jacobs ◽  
Richard Highton
Keyword(s):  
River Systems ◽  
Gyrinophilus Porphyriticus

scholarly journals The utility of formalin-fixed tissues and allozyme supernatant for population genomics and considerations for combining capture- and RADseq-based SNP datasets

2021 ◽  
Author(s):  
Kyle O'Connell ◽  
Kevin Mulder ◽  
Addison Wynn ◽  
Kevin de Queiroz ◽  
Rayna Bell
Keyword(s):  
Genomic Dna ◽  
High Throughput Sequencing ◽  
Population Genomics ◽  
Phylogenetic Analyses ◽  
Principal Component ◽  
Museum Specimens ◽  
Population Genomic ◽  
Genomic Analyses ◽  
Gyrinophilus Porphyriticus ◽  
Formalin Fixed

Until recently many historical museum specimens were largely inaccessible to genomic inquiry, but high-throughput sequencing (HTS) approaches have allowed researchers to successfully sequence genomic DNA from dried and fluid-preserved museum specimens. In addition to preserved specimens, many museums contain large series of allozyme supernatant samples but the amenability of these samples to HTS has not yet been assessed. Here, we compared the performance of a target-capture approach using alternative sources of genomic DNA from ten specimens of spring salamanders (Plethodontidae: Gyrinophilus porphyriticus) collected 1985–1990: allozyme supernatants, allozyme homogenate pellets, and formalin-fixed tissues. We designed capture probes based on double-digest restriction-site associated (RADseq) sequencing derived loci from seven of the specimens and assessed the success and consistency of capture and RADseq technical replicates. This study design enabled direct comparisons of data quality and potential biases among the different datasets for phylogenomic and population genomic analyses. We found that in phylogenetic analyses, all replicates for a given specimen clustered together, but in principal component space, RADseq replicates did not cluster with corresponding capture-based replicates. SNP calls were on average 18.3% different between technical replicates, but these discrepancies were primarily due to differences in heterozygous/homozygous SNP calls. We demonstrate that both allozyme supernatant and formalin-fixed samples can be successfully used for population genomic analyses and we discuss ways to identify and reduce biases associated with combining capture and RADseq data.

THE CLOACA AND SPERMATHECA OF GYRINOPHILUS PORPHYRITICUS

1927 ◽  
Vol 53 (4) ◽  
pp. 258-280 ◽  
Author(s):  
JOHANNA M. DIECKMANN
Keyword(s):  
Gyrinophilus Porphyriticus
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