Limited effects of egg size on chick growth in the chinstrap Penguin pygoscelis antarctica

• Published in: Polar Biology
• Main Authors: Belliure, Josabel, Carrascal, Luis M., Mínguez, Eduardo, Ferrer, Miguel
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer 1999
• Subjects: Antarc*; Antarctica; Chinstrap penguin; Polar Biology; Pygoscelis antarctica
• Online Access: http://hdl.handle.net/10261/66792; https://doi.org/10.1007/s003000050337

We studied the effect of egg size on chick growth in the chinstrap penguin under natural non-manipulative, conditions. The influence of egg size on chick mass at hatching, 15 and 45 days of age was analysed controlling for the effect of hatching date, as hatching date has been repeatedly associated with chick growth in this species. Egg volume explained 20% of the variation in the body mass of chicks at hatching. Its effect disappeared as chicks grew, being statistically not significant at the age of 15 and 45 days. Egg volume asymmetry also had no role in determining chicks' growth asymmetries. Peer Reviewed