Physiological analysis of the lymphatic system in the eastern painted turtle (Chrysemys picta picta)

2008 ◽  
Vol 86 (4) ◽  
pp. 245-252 ◽  
Author(s):  
Mary E. Walker ◽  
Deanna C. Wolfe ◽  
Daniel P. Toews
Keyword(s):  
Lymphatic System ◽  
Chrysemys Picta ◽  
Painted Turtle ◽  
Sequential Data ◽  
Poincaré Plot ◽  
Large Variability ◽  
Pressure Peak ◽  
Physiological Analysis ◽  
Lymph Heart ◽  
Beating Rate

Examination into the anuran lymphatic system has led to a comprehensive understanding of lymphatics, including the importance of synchrony in fluid-balance maintenance. However, little research has been conducted on the lymphatics of turtles and other reptilian vertebrates. Using pressure-peak recordings created through cannulation of both lymph hearts of the eastern painted turtle, Chrysemys picta picta (Schneider, 1783), the lymph heart contraction rate was verified and the interbeat interval patterns were examined using Poincaré plots. The lymph heart beating rate was determined to be 38.2 beats·min–1 with a mean pulse pressure of 2.40 ± 1.44 mm Hg (1 mm Hg at 0 °C = 133.3224 Pa). Poincaré plots are useful in displaying nonlinear sequential data and are often given descriptive names related to the overall pattern. The Poincaré plot resembled a garden hose nozzle spray, indicating a large variability in interbeat time intervals with periods of multiple-beat patterns. The degree of bilateral lymph heart synchrony was determined in the turtle using the mean time difference between right and left lymph heart systoles. Results show that chelonian lymph hearts do in fact beat in synchrony, with over 50% of contractions occurring within 100 ms of each other. This indicates shared neuronal control and may suggest an energetic advantage to fluid homeostasis.

Synchrony in the amphibian lymphatic system: evidence for bilateral posterior lymph heart synchrony and cardiac–lymphatic synchrony in Rana catesbeiana and Bufo marinus

2006 ◽  
Vol 84 (3) ◽  
pp. 374-382 ◽  
Author(s):  
Emily H Coolidge ◽  
Marla J MacAulay ◽  
Daniel P Toews
Keyword(s):  
Lymphatic System ◽  
Rana Catesbeiana ◽  
Heart Function ◽  
Bufo Marinus ◽  
Poincaré Plot ◽  
Plot Analysis ◽  
Lymph Heart ◽  
Systemic Heart ◽  
Homeostatic Mechanisms

Early investigations into amphibian lymph heart function established that lymph heart contractions were synchronous with neither the systemic heart, nor the lungs, nor each other. However, the present study concludes that there is synchronization between the cardiac heart and the lymph hearts and that the posterior lymph hearts in both Rana catesbeiana Shaw, 1802 and Bufo marinus (L., 1758) beat synchronously as well. Pressure peaks were recorded through cannulation of the ischiatic artery and each posterior lymph heart and subsequently analyzed to determine the time differences between arterial diastole and lymph heart systole or between two bilateral lymph heart systoles. Results show that there is clear synchronization between the lymph heart systoles of two bilateral posterior lymph hearts. This lymph heart synchrony is further supported by using Poincaré plot analysis to visually compare the lymph heart inter-beats. Cardiac heart and lymph heart contractions also show a degree of synchronization, even though the lymph hearts beat up to three times as fast as the cardiac heart. These results support the conclusion that synchrony is characteristic of the anuran lymphatic system and that synchronization of the cardiac heart and the lymph hearts could impart an energetic advantage that benefits fluid homeostatic mechanisms.

Characterization of the Biodiesel Degrading Acinetobacter oleivorans Strain PT8 Isolated from the Fecal Material of a Painted Turtle (Chrysemys picta)

2021 ◽  
Author(s):  
Amanda Deems ◽  
Michael Du Prey ◽  
Scot E. Dowd ◽  
Richard William McLaughlin
Keyword(s):  
Chrysemys Picta ◽  
Painted Turtle ◽  
Fecal Material

scholarly journals Retinal recipient nuclei in the painted turtle,Chrysemys picta: An autoradiographic and HRP study

1981 ◽  
Vol 199 (1) ◽  
pp. 97-112 ◽  
Author(s):  
Andrew H. Bass ◽  
R. Glenn Northcutt
Keyword(s):  
Chrysemys Picta ◽  
Painted Turtle

Speciation in Spirorchis (Trematoda: Spirorchiidae) Infecting the Painted Turtle, Chrysemys picta

1969 ◽  
Vol 55 (6) ◽  
pp. 1169 ◽  
Author(s):  
Chauncey G. Goodchild ◽  
Virginia L. Martin
Keyword(s):  
Chrysemys Picta ◽  
Painted Turtle

Seasonal Incidence of Leech Infestation on the Painted Turtle, Chrysemys picta

1971 ◽  
Vol 57 (1) ◽  
pp. 32 ◽  
Author(s):  
Carl H. Ernst
Keyword(s):  
Chrysemys Picta ◽  
Painted Turtle ◽  
Seasonal Incidence

The Painted Turtle, Chrysemys picta: A Model System for Vertebrate Evolution, Ecology, and Human Health

2009 ◽  
Vol 2009 (7) ◽  
pp. pdb.emo124-pdb.emo124 ◽  
Author(s):  
N. Valenzuela
Keyword(s):  
Human Health ◽  
Model System ◽  
Chrysemys Picta ◽  
Vertebrate Evolution ◽  
Painted Turtle

A Low Threshold Temperature for Sexual Differentiation in the Painted Turtle, Chrysemys picta

Copeia ◽  
1984 ◽  
Vol 1984 (2) ◽  
pp. 546 ◽  
Author(s):  
William H. N. Gutzke ◽  
Gary L. Paukstis
Keyword(s):  
Sexual Differentiation ◽  
Chrysemys Picta ◽  
Threshold Temperature ◽  
Painted Turtle ◽  
Low Threshold

Seasonal change in the capacity for supercooling by neonatal painted turtles

2001 ◽  
Vol 204 (9) ◽  
pp. 1667-1672 ◽  
Author(s):  
G.C. Packard ◽  
M.J. Packard ◽  
L.L. McDaniel
Keyword(s):  
Natural History ◽  
Seasonal Change ◽  
Chrysemys Picta ◽  
Painted Turtle ◽  
Nucleating Agents ◽  
Limited Capacity ◽  
The North ◽  
Terrestrial Arthropods ◽  
Painted Turtles ◽  
Reduced Temperature

Hatchlings of the North American painted turtle (Chrysemys picta) typically spend their first winter of life inside the shallow, subterranean nest where they completed incubation the preceding summer. This facet of their natural history commonly causes neonates in northerly populations to be exposed in mid-winter to ice and cold, which many animals survive by remaining unfrozen and supercooled. We measured the limit of supercooling in samples of turtles taken shortly after hatching and in other samples after 2 months of acclimation (or acclimatization) to a reduced temperature in the laboratory or field. Animals initially had only a limited capacity for supercooling, but they acquired an ability to undergo deeper supercooling during the course of acclimation. The gut of most turtles was packed with particles of soil and eggshell shortly after hatching, but not after acclimation. Thus, the relatively high limit of supercooling for turtles in the days immediately after hatching may have resulted from the ingestion of soil (and associated nucleating agents) by the animals as they were freeing themselves from their eggshell, whereas the relatively low limit of supercooling attained by acclimated turtles may have resulted from their purging their gut of its contents. Parallels may, therefore, exist between the natural-history strategy expressed by hatchling painted turtles and that expressed by numerous terrestrial arthropods that withstand the cold of winter by sustaining a state of supercooling.

Orientation of the Painted Turtle, Chrysemys picta

1964 ◽  
Vol 71 (2) ◽  
pp. 320 ◽  
Author(s):  
Edward P. Ortleb ◽  
Owen J. Sexton
Keyword(s):  
Chrysemys Picta ◽  
Painted Turtle
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