Tagging rockhopper penguins in New Island

Examination of sex differences in the foraging behaviour of southern rockhopper penguins during the incubation period, using GPS and timeedepth data, stable isotope analysis and an automated weighbridge system. The study received financial support from the Deutsche Forschungsgemeinschaft (DFG QU148/1ff.), the Overseas Territories Environmental Programme (FAL 603) and the Falkland Islands Government Environmental Studies Budget. KL benefited from a Claude Leon Fellowship. Data are available on request to the authors. Data are stored in the database managed by Movebank data repository. https://www.movebank.org/

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Additional Info

Field Value
Last Updated December 14, 2020, 09:52 (PST)
Created January 30, 2020, 05:20 (PST)
Region Falkland Islands
Language eng
Topic Category Biota; flora and/or fauna in natural environment
Temporal Extent Start 2009-01-01
Temporal Extent End 2011-12-31
Dataset Reference Date 2011
Lineage Differences in the foraging behaviour of southern rockhopper penguins during the incubation period were examined using GPS and timeedepth data, stable isotope analysis and an automated weighbridge system. The results showed that while males carried out mostly long trips lasting several days, females often used coastal foraging areas on day trips. Stable isotope data suggested differences in prey composition between the sexes, with consistently higher trophic levels in males as expected for their larger size and ability to catch larger prey items. Ecological niche models, using MaxEnt modelling, were run to compare the environmental conditions in the utilized incubation season habitat between the sexes. MaxEnt models suggested that the niche spaces of males and females are largely overlapping, but males have slightly larger niche width. Smaller dive loggers (TDRs) were used in 2010/11 for comparison to larger GPS data loggers used in all three seasons and we included two categories of control birds: handled controls and PIT control birds that were previously marked with passive integrative transponders (PITs), but which had not been handled during this study. Increased foraging trip duration was only observed in GPS birds during 2010/11, the breeding season in which we also found GPS birds foraging further away from the colony and travelling longer distances. Compared to previous breeding seasons, 2010/11 may have been a period with less favourable environmental conditions, which would enhance the impact of logger attachments. A comparison between GPS and TDR birds showed a significant difference in dive depth frequencies with birds carrying larger GPS data loggers diving shallower. More details can be obtained from two publications: Ludynia K, Dehnhard N, Poisbleau M, Demongin L, Masello JF, et al. (2012) Evaluating the impact of handling and logger attachment on foraging parameters and physiology in southern rockhopper penguins. PLoS ONE 7(11): e50429. doi:10.1371/journal.pone.0050429 Ludynia K, Dehnhard N, Masello JF, Voigt CC, P Quillfeldt (2013) Sexual segregation in rockhopper penguins during incubation. Animal Behaviour(85): 255-267. doi:10.1016/j.anbehav.2012.11.001
West Longitude -61.3328
South Latitude -51.7908
East Longitude -61.2102
North Latitude -51.6479
Spatial Reference System WGS84
Responsible Organisation Name Hidden (personal data protection)
Contact Mail Address Hidden (personal data protection)
Responsible Party Role Hidden (personal data protection)
Access Limitations Restricted, send data request to data owner
Use Constraints Restricted, but open subject to limitations and prior agreement with responsible organisation. Copyright must be cited
Data Format unknown
Update Frequency unknown
Accuracy Unknown
Resource Type Dataseries
Original Title Hidden (internal use only)
Metadata Date 2014-11-21
Metadata Point of Contact datamanager@saeri.ac.fk
Contact Consent Contact details hidden
Unique Resource ID FK-UNIGIESSEN-165

Dataset extent

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