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Author (up) Adams, J., Scott, D., McKechnie, S., Blackwell, G., Shaffer, S.A., and H. Moller openurl 
  Title Effects of geolocation archival tags on reproduction and adult body mass of Sooty Shearwater (Puffinus griseus) Type Journal Article
  Year 2009 Publication New Zealand Journal of Zoology Abbreviated Journal  
  Volume 36 Issue Pages 355-366  
  Corporate Author Thesis  
  Abstract We attached 11 g (1.4% body-mass
equivalent) global location sensing (GLS) archival
tag packages to tarsi of 25 breeding sooty shearwaters
(Puffinus griseus, titi) on Whenua Hou (Codfish
Island), New Zealand during the chick-rearing
period in 2005. Compared with chicks reared by
non-handled adults that did not carry tags, deployment
of tags on one or both adult parents ultimately
resulted in 35% reduction in chick body mass and
significantly reduced chick skeletal size preceding
fledging (19 April). However, body mass between
chick groups was not significantly different after
controlling for skeletal size. Effects on chicks were
more pronounced in six pairs where both parents
carried tags. Chick mass was negatively related to
the duration that adults carried tags. In this study,
none of the chicks reared by pairs where both parents
were tagged, 54% of chicks reared by pairs where
one parent was tagged, and 83% of chicks reared
by non-handled and non-tagged parents achieved
a previously determined pre-fledging mass threshold
(564 g; Sagar & Horning 1998). Body mass
of adults carrying tags and returning from transequatorial
migration the following year were 4%
lighter on average than non-tagged birds, but this
difference was not statistically significant. Reduced
mass among chicks reared by adults carrying tags
during the chick-provisioning period indicated that
adults altered “normal” provisioning behaviours to
maintain their own body condition at the expense
of their chicks. Population-level information derived
from telemetry studies can reveal important
habitat-linked behaviours, unique aspects of seabird
foraging behaviours, and migration ecology.
Information for some species (e.g., overlap with
fisheries) can aid conservation and marine ecosystem
management. We advise caution, however, when
interpreting certain data related to adult provisioning
behaviours (e.g., time spent foraging, provisioning
rates, etc.). If effects on individuals are of concern,
we suggest shorter-term deployments, smaller and
lighter tags, and alternative attachment techniques,
especially when investigating threatened or endangered
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  Area Expedition Conference  
Census of Marine Life Projects
TOPP - Tagging of Pacific Pelagics
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