Do two closely related petrel species have a different breeding strategy in Antarctica?
Marine birds and seals around the Marguerite Bay and Bellingshausen Sea areas
Blood chemistry in southern elephant seal mothers and pups during lactation reveals no effect of handling
Serum clinical chemistry parameters were examined in lactating southern elephant seal Mirounga leonina mothers and their pups from the declining Macquarie Island population. There were significant changes in serum values from 2 to 21 days postpartum in both nursing mothers (increase: inorganic phosphate; decrease: creatinine, potassium, chloride, c...
Responses of seabirds, in particular prions (Pachyptila sp.), to small-scale processes in the Antarctic Polar Front
Small-scale distribution patterns of seabirds in the Antarctic Polar Front (APF) were investigated in relation to other biological, physical, and chemical features during the ANT-XIII/2 research cruise of R.V. Polarstern from December 1995 to January 1996. The APF is characterized by steep gradients in sea-surface temperature and salinity. Within t...
Movements and foraging areas of naove, recently weaned southern elephant seal pups
1. Female southern elephant seals (Mirounga leonina L. ) expend variable, often large, amounts of their stored body resources on their pups during lactation. There is some evidence that pups with higher weaning masses have a better chance of survivingtheir first year. But in order to understand what level of maternal investment is required to produ...
Adrenocortical responsiveness in southern elephant seal mothers and pup during lactation and the effect of scientific ha...
We examined the cortisol responses to chemical and physical restraint stress in southern elephant seal Mirounga leonina females and their pups at three stages during lactation. In anaesthetised females the serum cortisol levels changed moderately during the 45-min sampling period following restraint, with average peaks at 23 min after anaesthetic a...
Different breeding strategies in two closely related petrel species
The Antarctic petrel as krill monitor for CCAMLR?
Mass of weaned elephant seal pups in areas of low and high human presence
On sub-Antarctic Macquarie Island, we examined pup weaning mass of southern elephant seals in relation to human presence. Pup weaning mass was previously found to be positively associated with 1st-year survivorship. Weaned pups were weighed in a remote area, Middle Beach, and in an area of relatively high human presence, Isthmus East. The areas wer...
Studying the breeding behaviour of petrels in Antarctica by using an automatic weigh and identification nest-system
