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The effect of carrying devices on breeding royal penguins


Hull, CL, The effect of carrying devices on breeding royal penguins, Condor, 99, (2) pp. 530-534. ISSN 0010-5422 (1997) [Refereed Article]

DOI: doi:10.2307/1369962


The impact of Time Depth Recorders (TDRs) and VHF transmitters, deployed on Royal Penguins (Eudyptes schlegeli) to examine foraging behavior, was assessed during all stages of the breeding season. Models of the devices were attached to penguins and compared to control birds with no devices. There were no impacts from transmitters on probability of return from a foraging trip, foraging trip duration, mass gained, water influx, or body composition, but substantial impacts from the TDRs. Attachment of TDRs (1) reduced the likelihood that penguins would continue the breeding attempt, (2) increased foraging trip duration, (3) increased water influx, and (4) decreased fat levels. The effects varied with sex and stage in the breeding season, which appeared to be related to the energetic demands of the stage in the breeding season. TDRs probably increased drag, affecting swimming speed and foraging success. The differential impact of the devices is most likely related to their cross-sectional area and streamlining, with TDRs being larger and less streamlined than transmitters.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Zoology
Research Field:Zoology not elsewhere classified
Objective Division:Culture and Society
Objective Group:Religion
Objective Field:Religion not elsewhere classified
UTAS Author:Hull, CL (Dr Cindy Hull)
ID Code:11092
Year Published:1997
Web of Science® Times Cited:47
Deposited By:Zoology
Deposited On:1997-08-01
Last Modified:2011-08-11

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