scholarly journals Skin pigmentation change in tiger salamanders, Ambystoma tigrinum, from Alberta

Blue Jay ◽  
1998 ◽  
Vol 56 (1) ◽  
Author(s):  
Daniel F. Brunton
Keyword(s):  
Skin Pigmentation ◽  
Ambystoma Tigrinum ◽  
Tiger Salamanders ◽  
Pigmentation Change

Microsatellite analyses across three diverse vertebrate transcriptomes (Acipenser fulvescens, Ambystoma tigrinum, and Dipodomys spectabilis)

Genome ◽  
2013 ◽  
Vol 56 (7) ◽  
pp. 407-414 ◽  
Author(s):  
Jacqueline M. Doyle ◽  
Gregor Siegmund ◽  
Joseph D. Ruhl ◽  
Soo Hyung Eo ◽  
Matthew C. Hale ◽  
...  
Keyword(s):  
Lake Sturgeon ◽  
Untranslated Regions ◽  
Ambystoma Tigrinum ◽  
Acipenser Fulvescens ◽  
Data Sets ◽  
Noncoding Dna ◽  
Kangaroo Rats ◽  
Tiger Salamanders ◽  
Dipodomys Spectabilis ◽  
In Silico Polymorphism

Historically, many population genetics studies have utilized microsatellite markers sampled at random from the genome and presumed to be selectively neutral. Recent studies, however, have shown that microsatellites can occur in transcribed regions, where they are more likely to be under selection. In this study, we mined microsatellites from transcriptomes generated by 454-pyrosequencing for three vertebrate species: lake sturgeon (Acipenser fulvescens), tiger salamander (Ambystoma tigrinum), and kangaroo rat (Dipodomys spectabilis). We evaluated (i) the occurrence of microsatellites across species; (ii) whether particular gene ontology terms were over-represented in genes that contained microsatellites; (iii) whether repeat motifs were located in untranslated regions or coding sequences of genes; and (iv) in silico polymorphism. Microsatellites were less common in tiger salamanders than in either lake sturgeon or kangaroo rats. Across libraries, trinucleotides were found more frequently than any other motif type, presumably because they do not cause frameshift mutations. By evaluating variation across reads assembled to a given contig, we were able to identify repeat motifs likely to be polymorphic. Our study represents one of the first comparative data sets on the distribution of vertebrate microsatellites within expressed genes. Our results reinforce the idea that microsatellites do not always occur in noncoding DNA, but commonly occur in expressed genes.

Single-host pathogen effects on mortality and behavioral responses to predators in salamanders (Urodela: Ambystomatidae)

2004 ◽  
Vol 82 (9) ◽  
pp. 1477-1483 ◽  
Author(s):  
Matthew J Parris ◽  
Alison Davis ◽  
James P Collins
Keyword(s):  
Activity Level ◽  
Ambystoma Tigrinum ◽  
Predator Prey ◽  
Host Behavior ◽  
Anax Junius ◽  
Tiger Salamanders ◽  
Thermal Maximum ◽  
Antipredator Responses ◽  
Host Pathogen ◽  
Single Host

Pathogens can alter host behavior and affect the outcome of predator-prey interactions. Acute phase responses of hosts (e.g., a change in activity level or behavioral fever) often signal an infection, but the ecological consequences of host behavioral changes largely are unexplored, particularly for directly transmitted (i.e., single-host) pathogens. We performed three experiments to test the hypothesis that a pathogen, Ambystoma tigrinum virus (ATV), alters host behavior of Sonoran tiger salamanders (Ambystoma tigrinum stebbinsi Lowe, 1954) and enhances predation. In the first experiment, salamander larvae exposed to ATV experienced 48% lower mortality from dragonfly Anax junius (Drury, 1773) larvae than those in controls. Second, uninfected and infected larvae exposed to the nonlethal (caged) presence of predators did not significantly differ in their distance from the predator. Infected salamanders significantly increased their activity level relative to those in controls in predator-free conditions. Finally, ATV-infected larvae preferred significantly warmer temperatures than uninfected larvae, but larvae reared at the thermal maximum for the virus all died. High host activity level yet retention of effective antipredator responses likely benefits ATV because this single-host pathogen relies on host survival for transmission. Preference for warmer temperatures may be associated with the host response to pathogens and may help fight infection.

Pathogenicity and Transmission of Chytridiomycosis in Tiger Salamanders (Ambystoma tigrinum)

Copeia ◽  
2003 ◽  
Vol 2003 (3) ◽  
pp. 601-607 ◽  
Author(s):  
Elizabeth W. Davidson ◽  
Matthew Parris ◽  
James P. Collins ◽  
Joyce E. Longcore ◽  
Allan P. Pessier ◽  
...  
Keyword(s):  
Ambystoma Tigrinum ◽  
Tiger Salamanders

“Paedocannibal” Morph Barred Tiger Salamanders (Ambystoma tigrinum mavortium) from Eastern South Dakota

1999 ◽  
Vol 141 (1) ◽  
pp. 124-139 ◽  
Author(s):  
KJERSTEN L. LARSON ◽  
WALTER DUFFY ◽  
ERIN JOHNSON ◽  
MICHELE F. DONOVAN ◽  
MICHAEL J. LANNOO
Keyword(s):  
South Dakota ◽  
Ambystoma Tigrinum ◽  
Tiger Salamanders

Polymorphic microsatellite loci for tiger salamanders, Ambystoma tigrinum

2002 ◽  
Vol 3 (1) ◽  
pp. 79-81 ◽  
Author(s):  
S. G. Mech ◽  
A. Storfer ◽  
J. A. Ernst ◽  
M. W. Reudink ◽  
S. C. Maloney
Keyword(s):  
Microsatellite Loci ◽  
Ambystoma Tigrinum ◽  
Tiger Salamanders ◽  
Polymorphic Microsatellite

Interactions of Androgens and Estradiol on Sex Accessory Ducts of Larval Tiger Salamanders,Ambystoma tigrinum

1997 ◽  
Vol 106 (3) ◽  
pp. 348-355 ◽  
Author(s):  
David O. Norris ◽  
James A. Carr ◽  
Cliff H. Summers ◽  
Robert Featherston
Keyword(s):  
Ambystoma Tigrinum ◽  
Tiger Salamanders
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