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11 results for “Eurycea”
Eurycea sp. (Plethodontidae) - whole organism
Image of Eurycea sp. (Plethodontidae) - whole organism
Eurycea sp. (Plethodontidae) - whole organism
Image of Eurycea sp. (Plethodontidae) - whole organism
Eurycea sp. (Plethodontidae) - whole organism
Image of Eurycea sp. (Plethodontidae) - whole organism
River drainage reorganization and reticulate evolution in the Two-Lined Salamander (Eurycea bislineata) species complex
<p>The origin and eventual loss of biogeographic barriers can create alternating periods of allopatry and secondary contact, facilitating gene flow among distinct metapopulations and generating reticulate evolutionary histories that are not adequately described by a bifurcating evolutionary tree. One such example may exist in the two-lined salamander (<em>Eurycea bislineata</em>) species complex, where discordance among morphological and molecular datasets has created a "vexing taxonomic challenge". Previous phylogeographic analyses of mitochondrial DNA (mtDNA) suggested that the reorganization of Miocene paleodrainages drove vicariance and dispersal, but the inherent limitations of a single-locus dataset precluded the evaluation of subsequent gene flow. Here, we generate triple-enzyme restriction site-associated DNA sequencing (3RAD) data for >100 individuals representing all major mtDNA lineages and use a suite of complementary methods to demonstrate that discordance among earlier datasets is best explained by a reticulate evolutionary history influenced by river drainage reorganization. Systematics of such groups should acknowledge these complex histories and relationships that are not strictly hierarchical.</p>
River drainage reorganization and reticulate evolution in the Two-Lined Salamander (Eurycea bislineata) species complex
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Data from: A genetic polymorphism underlying alternative reproductive tactics in Eurycea salamanders
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Geographic patterns of genomic variation in the threatened Salado salamander, Eurycea chisholmensis
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FIG. 1 in Evaluation of Tagging Methods for Unique Identification of Individuals in Three Aquatic Eurycea Salamander Species
FIG. 1. VIE tag orientation used on three aquatic salamanders (Eurycea spp.) was either vertical or horizontal. Tags were read left to right (tail to head) for vertical orientation and top to bottom (dorsal to ventral) for horizontal orientation.
FIG. 3 in Evaluation of Tagging Methods for Unique Identification of Individuals in Three Aquatic Eurycea Salamander Species
FIG. 3. Examples of the different type of scenarios with tags in the study with time series photos and corresponding scores for expert readability (Read), breakage (Break), and percent remaining (%). (A) Depicts E. rathbuni with near faultless horizontal VIE tag, black-blue-pink. (B) A typical horizontal VIE tag on Texas Blind Salamander, purple-yellow-pink. (C) A vertical VIE tag on Texas Blind Salamander showing how the elastomer spreads into costal grooves and breaks along those lines, orange-green-red. (D) San Marcos Salamander with vertical VIE tag showing partial tag migration between month 6 and 9. Bottom portion of second yellow line migrates toward third green line, yellow-yellow-green. This individual had a previous horizontal green mark for sex. (E) Comal Springs Salamander with vertical VIE tag portraying partial tag loss of pink line between month 6 and 9, yellow-pink-red. (F) A Texas Blind Salamander, part of pilot tagging group tagged in June 2018, that was followed during the study, depicting a long-term horizontal VIE tag, orange-yellow-orange.
FIG. 2 in Evaluation of Tagging Methods for Unique Identification of Individuals in Three Aquatic Eurycea Salamander Species
FIG. 2. Body size ranges for three aquatic salamanders (Eurycea spp.) varied by species and animal age. (A) Largest F1 Texas Blind Salamander, in the first group to receive PIT tags. (B) Average size representative of Texas Blind Salamanders to receive horizontal VIA and VIE tags, approximately 2–5 plus years of age. (C) 8.4 mm PIT tag. (D) Average size of vertical VIE-tagged Texas Blind Salamanders, approximately nine months to 1.5 years of age. (E) Average size of San Marcos Salamanders used in study, 2 plus years of age. (F) Average size of Comal Springs Salamanders used in study, 2 plus years of age.
FIG. 4 in Evaluation of Tagging Methods for Unique Identification of Individuals in Three Aquatic Eurycea Salamander Species
FIG. 4. (A) ''E13'' illustrates an ideal subcutaneous VIA tag. (B) ''E22'' illustrates a poor-quality VIA tag, with the code being blurred beyond legibility by both the angle and depth of tag insertion and melanophores that blur the numbers.
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OpenNeuro
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