Spée, Marion; Marchal, Lorène; Lazin, David; Le Maho, Yvon; Chastel, Olivier; Beaulieu, Michaël; Raclot, Thierry (2011): (Table 1) Characteristics of breeding male Adélie penguins (Pygoscelis adeliae) treated with varying degrees of corticosterone, Adélie land, Antarctica [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.837408, Supplement to: Spée, M et al. (2011): Exogenous corticosterone and nest abandonment: A study in a long-lived bird, the Adélie penguin. Hormones and Behavior, 60(4), 362-370, https://doi.org/10.1016/j.yhbeh.2011.07.003
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Abstract:
Breeding individuals enter an emergency life-history stage when their body reserves reach a minimum threshold. Consequently, they redirect current activity toward survival, leading to egg abandonment in birds. Corticosterone (CORT) is known to promote this stage. How and to what extent CORT triggers egg abandonment when breeding is associated with prolonged fasting, however, requires further investigation. We manipulated free-living male Adelie penguins with CORT-pellets before their laying period. We then examined their behavioral response with respect to nest abandonment in parallel with their prolactin levels (regulating parental care), and the subsequent effects of treatment on breeding success in relieved birds. Exogenous CORT triggered nest abandonment in 60% of the treated penguins -14 days after treatment and induced a concomitant decline in prolactin levels. Interestingly, prolactin levels in treated penguins that did not abandon their nest were higher at the point of implantation and also after being relieved by females, when compared with abandoning penguins. Among successful birds, the treatment did not affect the number of chicks, nor the brood mass.
Our results show the involvement of CORT in the decision-making process regarding egg abandonment in Adelie penguins when incubation is associated with a natural long fast. However, we suggest that CORT alone is not sufficient to trigger nest abandonment but that 1) prolactin levels need to reach a low threshold value, and 2) a rise in proteolysis (i.e. utilization of protein as main energy substrate) seems also to be required.
Project(s):
Coverage:
Latitude: -66.666700 * Longitude: 140.016700
Date/Time Start: 2007-11-16T00:00:00 * Date/Time End: 2007-11-17T00:00:00
Event(s):
Comment:
DATE/TIME = implantation date. Chicks reach their peak body mass after 42 to 45 days according to Ainley (2002). Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Comment | Comment | Spée, Marion | Completion of the 1st incubation shift | ||
| 2 | Treatment | Treat | Spée, Marion | C10 and C100: male Adélie penguins implanted with 10 and 100 mg of CORT, respectively | ||
| 3 | Pygoscelis adeliae | P. adeliae | # | Spée, Marion | male adults | |
| 4 | DATE/TIME | Date/Time | Geocode | |||
| 5 | Standard deviation | Std dev | ± | Spée, Marion | of implantation date | |
| 6 | Pygoscelis adeliae, mass | P. adeliae m | kg | Spée, Marion | of adults at implantation; # = 4.69 and 4.49 | |
| 7 | Pygoscelis adeliae, standard deviation | P. adeliae std dev | ± | Spée, Marion | mass of adults at implantation | |
| 8 | Date | Date | Spée, Marion | of departure; Nest abandonment Control: 2007-12-13 and 2007-12-06 | ||
| 9 | Standard deviation | Std dev | ± | Spée, Marion | of departure date | |
| 10 | Pygoscelis adeliae, egg laying date | P. adeliae egg laying | Spée, Marion | Nest abandonment Control: 2007-11-18 and 2007-11-21 | ||
| 11 | Pygoscelis adeliae, standard deviation | P. adeliae std dev | ± | Spée, Marion | of egg-laying date | |
| 12 | Eggs per clutch | Eggs/clutch | # | Spée, Marion | ||
| 13 | Eggs per clutch, standard error | Eggs/clutch std e | ± | Spée, Marion | ||
| 14 | Pygoscelis adeliae, hatching date | P. adeliae hatching | Spée, Marion | |||
| 15 | Pygoscelis adeliae, standard deviation | P. adeliae std dev | ± | Spée, Marion | of hatching date | |
| 16 | Incubation duration | Inc dur | days | Spée, Marion | ||
| 17 | Standard deviation | Std dev | ± | Spée, Marion | incubation duration | |
| 18 | Number | No | Spée, Marion | of chicks one week after hatching (per pair) | ||
| 19 | Standard deviation | Std dev | ± | Spée, Marion | no. of chicks one week after hatching | |
| 20 | Number | No | Spée, Marion | of chicks when reaching their peak body mass (per pair) | ||
| 21 | Standard deviation | Std dev | ± | Spée, Marion | no. of chicks when reaching their peak body mass | |
| 22 | Pygoscelis adeliae, mass | P. adeliae m | kg | Spée, Marion | of chicks at peak body mass | |
| 23 | Pygoscelis adeliae, standard deviation | P. adeliae std dev | ± | Spée, Marion | mass of chicks at peak body mass |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
92 data points