Diving behaviour of Elseya albagula from a naturally flowing and hydrologically altered habitat

Gordos, M. A., Hamann, M., Schauble, C. S., Limpus, C. J. and Franklin, C. E. (2007) Diving behaviour of Elseya albagula from a naturally flowing and hydrologically altered habitat. Journal of Zoology, 272 4: 458-469. doi:10.1111/j.1469-7998.2007.00289.x


Author Gordos, M. A.
Hamann, M.
Schauble, C. S.
Limpus, C. J.
Franklin, C. E.
Title Diving behaviour of Elseya albagula from a naturally flowing and hydrologically altered habitat
Formatted title
Diving behaviour of Elseya albagula from a naturally flowing and hydrologically altered habitat
Journal name Journal of Zoology   Check publisher's open access policy
ISSN 0952-8369
Publication date 2007-01-01
Sub-type Article (original research)
DOI 10.1111/j.1469-7998.2007.00289.x
Volume 272
Issue 4
Start page 458
End page 469
Total pages 12
Editor Boyd, I.
Gittleman, J.
Clutton-Brock, J.
Elwood, R.
Place of publication Oxford
Publisher Wiley-Blackwell Publishing
Language eng
Subject C1
270599 Zoology not elsewhere classified
780105 Biological sciences
Abstract This study investigated the diving behaviour and performance of the bimodally respiring turtle Elseya albagula within the Burnett River, central Qld, Australia. Diving parameters were recorded using pressure-sensitive time-depth recorders for turtles residing within a free flowing versus regulated reach. Maximum submergence time recorded for El. albagula (greater than 3 hours) is among the longest recorded for a voluntarily diving vertebrate, and is attributed to the turtle's ability to respire aquatically. Median dive times logged for El. albagula within the regulated reach (6.7 min) were threefold longer than values recorded for turtles residing within a naturally flowing creek (1.9 min), with discrepancies in dive duration possibly due to the variable hydrologic flows recorded below the weir. No correlation was observed between dive duration and subsequent surfacing intervals, suggesting that dives remained aerobic throughout the study. Despite considerable differences in the magnitude and daily variation of water flow between the two locations, similar diel activity and surfacing trends were recorded for El. albagula. Turtles undertook deep resting dives (> 1.5 m) during the day before moving into shallower habitats (< 1.0m) for the night, while the crepuscular hours were characterized by elevated surfacing frequencies attributed to periods of increased activity possibly associated with foraging.
Keyword Zoology
Elseya albagula
turtle
diving
bimodal respiration
water impoundment
Fresh-water Turtle
Stinkpot Sternotherus-odoratus
Shelled Trionyx-spiniferus
Bimodally Respiring Turtle
Aquatic Oxygen-uptake
Blood Acid-base
Rheodytes-leukops
Emydura-macquarii
Chelydra-serpentina
Chrysemys-picta
Q-Index Code C1
Q-Index Status Confirmed Code

 
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Created: Tue, 19 Feb 2008, 00:46:16 EST