Long–term effects of flipper bands on penguins

Gauthier‐Clerc, Michel; Gendner, Jean‐Paul; Ribic, Christine A.; Fraser, William R.; Woehler, Eric J.; Descamps, Sébastien; Gilly, C. L.; Bohec, Céline Le; Maho, Yvon Le

doi:10.1098/rsbl.2004.0201

Cited by 105 publications

(96 citation statements)

References 13 publications

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“…Physical scientists have long recognized that instrumentation can affect the behavior of natural systems (Fitzpatrick 2013). To promote animal welfare and ensure the integrity of research findings, ornithologists must also be aware of how marking techniques may influence the outcomes of avian behavioral and life history studies (e.g., Gauthier-Clerc et al 2004;Sheldon et al 2008;White et al 2013). Satellite telemetry has greatly improved our understanding of the migratory linkages of birds and has proven to be an important research and conservation tool (Higuchi 2012).…”

Section: Discussionmentioning

confidence: 99%

Evidence that dorsally mounted satellite transmitters affect migration chronology of Northern Pintails

Hupp

Kharitonov²,

Yamaguchi

et al. 2015

J Ornithol

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We compared migration movements and chronology between Northern Pintails (Anas acuta) marked with dorsally mounted satellite transmitters and pintails marked only with tarsus rings. During weekly intervals of spring and autumn migration between their wintering area in Japan and nesting areas in Russia, the mean distance that ringed pintails had migrated was up to 1000 km farther than the mean distance radiomarked pintails migrated. Radiomarked pintails were detected at spring migration sites on average 9.9 days (90 % CI 8.0, 11.8) later than ringed pintails that were recovered within 50 km. Although ringed and radiomarked pintails departed from Japan on similar dates, the disparity in detection of radiomarked versus ringed pintails at shared sites increased 7.7 days (90 % CI 5.2, 10.2) for each 1000 km increase in distance from Japan. Thus, pintails marked with satellite transmitters arrived at nesting areas that were 2500 km from Japan on average 19 days later than ringed birds. Radiomarked pintails were detected at autumn migration stopovers on average 13.1 days (90 % CI 9.8, 16.4) later than ringed birds that were recovered within 50 km. We hypothesize that dorsal attachment of 12-20 g satellite transmitters to Northern Pintails increased the energetic cost of flight, which resulted in more rapid depletion of energetic reserves and shortened the distance pintails could fly without refueling. Radiomarked pintails may have used more stopovers or spent longer periods at stopovers. causing their migration schedule to diverge from ringed pintails. We urge further evaluation of the effects of dorsally mounted transmitters on migration chronology of waterfowl.

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Section: Discussionmentioning

confidence: 99%

Evidence that dorsally mounted satellite transmitters affect migration chronology of Northern Pintails

Hupp

Kharitonov²,

Yamaguchi

et al. 2015

J Ornithol

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“…However, the lack of effects of logger position in little penguins, logger size in Adélie penguins and, surprisingly, flipper bands in little penguins suggests that animal-attached devices do not universally induce such organizational changes in seabird foraging behavior, despite having clear effects on other dive parameters and potentially, for flipper bands at least, fitness outcomes [49][50][51].…”

Section: Discussionmentioning

confidence: 99%

Hydrodynamic handicaps and organizational complexity in the foraging behavior of two free-ranging penguin species

et al. 2015

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Background:Animal movement exhibits self-similarity across a range of both spatial and temporal scales reminiscent of statistical fractals. Stressors are known to induce changes in these statistical patterns of behavior, although the direction and interpretation of such changes are not always clear. We examined whether the imposition of known hydrodynamic disruptors, bio-logging devices and flipper bands, induces changes in the temporal organization (complexity) of foraging sequences in two penguin species, little penguins (Eudyptula minor) and Adélie penguins (Pygoscelis adeliae).Results: Detrended fluctuation analysis showed that foraging sequences produced by little penguins carrying larger loggers were more complex, i.e., were more erratic tending toward greater stochasticity, than those carrying smaller loggers. However, logger size did not affect complexity in foraging sequences of Adélie penguins. Logger position was associated only weakly with altered complexity in little penguins, with individuals carrying loggers in the middle of their backs displaying slightly more complex dive sequences than those carrying loggers lower on their backs. Finally, despite their known negative effects on penguin fitness, flipper bands were not associated with dive sequence complexity in little penguins. Conclusions:Despite that externally attached devices can disrupt certain behavioral parameters in diving seabirds, we found mixed evidence in support of the hypothesis that such devices significantly disrupt the time-structured organizational properties of foraging sequences in the two penguin species investigated. However, smaller species carrying larger loggers, and perhaps those positioned higher on their backs, may experience an added element of noise in their behavioral sequences that may indicate a departure from foraging behavior observed under normal, unburdened conditions.

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“…Deleterious effects of flipper bands are well known and include increased energy expenditure, reduced reproductive success, and reduced survival rates (Culik et al 1993;Froget et al 1998;Gauthier-Clerc et al 2004;Dugger et al 2006). Others report little to no effect of properly designed and attached bands (Hindell et al 1996;Boersma and Rebstock 2009).…”

Section: Band Retention and Potential Negative Bias On Survival Estimmentioning

confidence: 99%

Adélie penguin (Pygoscelis adeliae) survival rates and their relationship to environmental indices in the South Shetland Islands, Antarctica

Hinke

Trivelpiece

2014

Polar Biol

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Seabird life history is typified by low fecundity, high adult survival rates, and relatively long lives. Such traits act as buffers, enabling persistence of populations under variable environmental conditions. Numerous studies, however, have suggested strong sensitivity of seabirds to environmental variability. In the Antarctic Peninsula region, for example, Adélie penguin (Pygoscelis adeliae) populations have declined during the last three decades, attributed largely to rapid changes in environmental conditions and food availability. We use 30 years of markrecapture data from known-age individuals in the South Shetland Islands and capture-mark-recapture models to estimate survival rates with respect to such environmental variation. We investigated specifically whether negative trends in survival rates were evident and whether indices of global, regional, and local environmental conditions considered important for Adélie penguin survival explained the variability in survival rates. Overall, negative trends in juvenile survival were evident, but adult survival rates exhibited high interannual variability. Indices of sea ice extent had the strongest correlations with survival rates, particularly Weddell Sea ice extent during spring among adults (r = 0.62) and during winter for juveniles (r = 0.46). An analysis of deviance, however, suggested that single environmental covariates explained \30 % of the observed variation in the full mark-recapture models. Despite positive effects of sea ice extent on survival rates of Adélie penguins, limited explanatory power of several environmental conditions previously identified as important for Adélie penguin survival underscores the difficulty of predicting future population responses in this region of rapid environmental change.

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Long–term effects of flipper bands on penguins

Cited by 105 publications

References 13 publications

Evidence that dorsally mounted satellite transmitters affect migration chronology of Northern Pintails

Evidence that dorsally mounted satellite transmitters affect migration chronology of Northern Pintails

Hydrodynamic handicaps and organizational complexity in the foraging behavior of two free-ranging penguin species

Adélie penguin (Pygoscelis adeliae) survival rates and their relationship to environmental indices in the South Shetland Islands, Antarctica

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