Reversible Melanization Following Substrate Color Reversal in Midland Painted Turtles (Chrysemys picta marginata) and Red-Eared Sliders (Trachemys scripta elegans)

2009 ◽  
Vol 43 (3) ◽  
pp. 402-408 ◽  
Author(s):  
John W. Rowe ◽  
David L. Clark ◽  
Michael Price ◽  
John K. Tucker
Keyword(s):  
Chrysemys Picta ◽  
Trachemys Scripta ◽  
Trachemys Scripta Elegans ◽  
Painted Turtles

Complete suppression of protein synthesis during anoxia with no post-anoxia protein synthesis debt in the red-eared slider turtleTrachemys scripta elegans

2001 ◽  
Vol 204 (24) ◽  
pp. 4353-4360 ◽  
Author(s):  
Keiron P. P. Fraser ◽  
Dominic F. Houlihan ◽  
Peter L. Lutz ◽  
Sandra Leone-Kabler ◽  
Liscia Manuel ◽  
...  
Keyword(s):  
Protein Synthesis ◽  
Chrysemys Picta ◽  
Trachemys Scripta ◽  
Complete Suppression ◽  
Trachemys Scripta Elegans ◽  
Dose Method ◽  
Chrysemys Picta Bellii ◽  
Measurable Level ◽  
Normoxic Control ◽  
Rna Concentration

SUMMARYTwo previous studies of the effects of anoxia on protein synthesis in anoxia-tolerant turtles (Trachemys scripta elegans, Chrysemys picta bellii) have generated opposing results. Using the flooding-dose method, we measured the rate of protein synthesis following injection and incorporation of a large dose of radiolabelled phenylalanine to resolve the question of whether anoxia results in a downregulation of protein synthesis. After 1 h of anoxia, levels of protein-incorporated radiolabel indicated that protein synthesis rates in the intestine, heart, liver, brain, muscle and lungs were not significantly different from those of normoxic controls. However, from 1 to 6 h of anoxia, quantities of protein-incorporated radiolabel did not increase, suggesting that protein synthesis had ceased or had decreased below a measurable level. There was also no significant post-anoxia increase in protein synthesis rates above normoxic control levels during 3 h of recovery from anoxia. RNA-to-protein ratios did not change significantly in any tissue except the heart, in which RNA levels decreased below normoxic control levels after 6 h of anoxia. Except in the heart, downregulation of protein synthesis during anoxia does not appear to be mediated by changes in tissue RNA concentration.

Temporal Variation in Growth Rate and Age at Maturity of Male Painted Turtles, Chrysemys picta

1993 ◽  
Vol 130 (2) ◽  
pp. 314 ◽  
Author(s):  
Nat B. Frazer ◽  
Judith L. Greene ◽  
J. Whitfield Gibbons
Keyword(s):  
Growth Rate ◽  
Temporal Variation ◽  
Chrysemys Picta ◽  
Age At Maturity ◽  
Painted Turtles

Helminths of Chrysemys picta belli in Manitoba including Polystomoides pauli sp.n. (Monogenea: Polystomatidae)

1979 ◽  
Vol 57 (5) ◽  
pp. 1046-1051 ◽  
Author(s):  
Shannon F. Timmers ◽  
Paul D. Lewis Jr.
Keyword(s):  
Oral Mucosa ◽  
Chrysemys Picta ◽  
First Report ◽  
Painted Turtles ◽  
Species Inquirendae

One new monogenean is described and 11 other helminths are reported from painted turtles from eastern Manitoba. Polystomoides pauli sp.n. from the host's oral mucosa most closely resembles P. coronatum (Leidy) and P. oris Paul. It differs from the former in having more and larger genital coronet spines, and possession of anterior cecal diverticula, and from the latter in size, larger number of genital coronet spines, and possession of great hooks with entire, not bifid, roots. Price's emendation of P. coronatum to include five species he held to be its synonyms is rejected; and the five species, P. opacum Stunkard, P. megacotyle Stunkard, P. microcotyle Stunkard, P. albicollis MacCallum, and P. digitatum MacCallum are designated species inquirendae. Polystomoides coronatum is restricted to the redescription given for it by Stunkard. The trematodes Crepidostomum sp., Eustomos chelydrae, Microphallus opacus, Protenes angustus, Spirorchis parvus, S. scripta, Telorchis attenuatus, and T. corti, the cestode Proteocephalus sp., and the nematodes Serpinema trispinosa and Spiroxys contortus are reported from Chrysemys picta belli. Except for P. angustus, all represent first reports from turtles in Canada. This is the first report of E. chelydrae from the host stomach, and the second report of M. opacus from naturally infected turtles.

Patterns and Possible Significance of Water Exchange by Flexible-Shelled Eggs of Painted Turtles (Chrysemys picta)

1981 ◽  
Vol 54 (1) ◽  
pp. 165-178 ◽  
Author(s):  
Gary C. Packard ◽  
Mary J. Packard ◽  
Thomas J. Boardman
Keyword(s):  
Water Exchange ◽  
Chrysemys Picta ◽  
Painted Turtles

scholarly journals INABILITY TO INDUCE TYMPANIC SQUAMOUS METAPLASIA USING ORGANOCHLORINE COMPOUNDS IN VITAMIN A-DEFICIENT RED-EARED SLIDERS (TRACHEMYS SCRIPTA ELEGANS)

2008 ◽  
Vol 44 (3) ◽  
pp. 664-669 ◽  
Author(s):  
Karl R. Kroenlein ◽  
Jonathan M. Sleeman ◽  
Steven D. Holladay ◽  
Priscilla H. Joyner ◽  
Justin D. Brown ◽  
...  
Keyword(s):  
Vitamin A ◽  
Squamous Metaplasia ◽  
Trachemys Scripta ◽  
Organochlorine Compounds ◽  
Trachemys Scripta Elegans
Sign in / Sign up

Export Citation Format

Share Document