DENSITY AND HAUL‐OUT BEHAVIOR OF LEOPARD SEALS ( HYDRURGA LEPTONYX ) IN PRYDZ BAY, ANTARCTICA

ABSTRACT The spatial distribution of leopard seals along the fast‐ice edge in the austral spring and summer of 1992 and 1993 in Prydz Bay, Antarctica, was determined by aerial surveys. Fewer individuals were observed within the area, and the seals observed were larger, in 1992 than in 1993. Comparis...

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Bibliographic Details
Published in:Marine Mammal Science
Main Authors: ROGERS, T. L., BRYDEN, M. M.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 1997
Subjects:
Aquatic Science
Ecology, Evolution, Behavior and Systematics
Austral
Prydz Bay
Hydrurga
Antarc*
Antarctica
Hydrurga leptonyx
Leopard Seals
Online Access:http://dx.doi.org/10.1111/j.1748-7692.1997.tb00632.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1748-7692.1997.tb00632.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-7692.1997.tb00632.x
Description
Summary:ABSTRACT The spatial distribution of leopard seals along the fast‐ice edge in the austral spring and summer of 1992 and 1993 in Prydz Bay, Antarctica, was determined by aerial surveys. Fewer individuals were observed within the area, and the seals observed were larger, in 1992 than in 1993. Comparison of the distributions and relative sizes of the seals suggests that there may be an age‐related difference in spatial behavior. The greater degree of separation among older seals may be due to intraspecific aggression increasing with age, a hypothesis supported by the high incidence of intraspecific scarring noted on leopard seals in this region. The seals’haul‐out behavior was negatively related to wind‐chill index.

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