Growth, Survivorship and Longevity of Painted Turtles Chrysemys picta in a Southwestern Michigan Marsh

1991 ◽  
Vol 125 (2) ◽  
pp. 245 ◽  
Author(s):  
Nat B. Frazer ◽  
J. Whitfield Gibbons ◽  
Judith L. Greene
Keyword(s):  
Chrysemys Picta ◽  
Painted Turtles

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

A compass without a map: tortuosity and orientation of eastern painted turtles (Chrysemys picta picta) released in unfamiliar territory

2006 ◽  
Vol 84 (8) ◽  
pp. 1129-1137 ◽  
Author(s):  
I.R. Caldwell ◽  
V.O. Nams
Keyword(s):  
Fractal Dimension ◽  
Random Walk ◽  
Spatial Scales ◽  
Chrysemys Picta ◽  
Reference Stimulus ◽  
Correlated Random Walk ◽  
Specific Mechanism ◽  
Minimal Time ◽  
Painted Turtles

Orientation mechanisms allow animals to spend minimal time in hostile areas while reaching needed resources. Identification of the specific mechanism used by an animal can be difficult, but examining an animal's path in familiar and unfamiliar areas can provide clues to the type of mechanism in use. Semiaquatic turtles are known to use a homing mechanism in familiar territory to locate their home lake while on land, but little is known about their ability to locate habitat in unfamiliar territory. We tested the tortuosity and orientation of 60 eastern painted turtles ( Chrysemys picta picta (Schneider, 1783)). We released turtles at 20 release points located at five distances and in two directions from two unfamiliar lakes. Turtle trails were quite straight (fractal dimension between 1.1 and 1.025) but were not oriented towards water from any distance (V-test; u < 0.72; P > 0.1). Turtles maintained their initially chosen direction but either could not detect water or were not motivated to reach it. Furthermore, paths were straighter at larger spatial scales than at smaller spatial scales, which could not have occurred if the turtles had been using a correlated random walk. Turtles must therefore be using a reference stimulus for navigation even in unfamiliar areas.

scholarly journals Nesting stage and distance to refuge influence terrestrial nesting behavior of Painted Turtles (Chrysemys picta)

2017 ◽  
Vol 95 (11) ◽  
pp. 837-841 ◽  
Author(s):  
David M. Delaney ◽  
Fredric J. Janzen ◽  
Daniel A. Warner
Keyword(s):  
Empirical Work ◽  
Chrysemys Picta ◽  
Flight Behavior ◽  
Human Observer ◽  
Potential Predator ◽  
Nest Sites ◽  
Painted Turtles ◽  
Flight Costs ◽  
Fitness Benefits ◽  
Predator Behavior

Theory predicts prey should flee to safety when the fitness benefits of flight meet or exceed the costs. Empirical work has shown the importance of predation risk (e.g., predator behavior, distance to refuge) to prey flight behavior. However, less is known about the influence of flight costs. We monitored nesting Painted Turtles (Chrysemys picta (Schneider, 1783)) to examine their response to a human observer (potential predator) depending on the distance between a turtle and an observer, distance between a turtle and water (i.e., refuge), and nesting stage at the time of the encounter (i.e., searching for a nest site vs. constructing a nest). We found no evidence that the distance to an observer influenced flight decisions. However, turtles were less likely to flee as the distance to water increased, and turtles already constructing nests were more likely to continue nesting than those still searching for nest sites. Turtles that traveled farther from water and that were constructing nests may have continued nesting because they had invested considerable energy and were close to completing oviposition. Thus, the fitness benefits of being closer to successful oviposition may outweigh the costs of increased vulnerability to predators during this important and vulnerable period of reproduction.

Interpond Movements of Western Painted Turtles (Chrysemys picta) in East-Central Kansas

2010 ◽  
Vol 55 (3) ◽  
pp. 403-410 ◽  
Author(s):  
William J. House ◽  
Ian M. Nall ◽  
R. Brent Thomas
Keyword(s):  
Chrysemys Picta ◽  
East Central ◽  
Painted Turtles
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