So happy together: juvenile crabeater seal behavior improves lice transmission

Accurate assessment of the abundance of pinnipeds from visual surveys requires estimation of both the available (hauled-out) and unavailable (in-water) components of the population (Eberhardt et al. 1979). Continental estimates of the abundance of the four Antarctic seals are based on limited information on haul-out behaviour. In developing continental estimates, Erickson & Hanson (1990) corrected visual surveys of the hauled-out component of the species' populations using data from observational studies of haulout behaviour by Erickson et al. (1989). Erickson & Hanson (1990) point out that, because the observational studies did not account for an unknown fraction of seals that remained in the water during the peak haul-out period, their abundance estimates are minimum values. Further, Erickson & Hanson (1990) corrected the visual surveys for all four species using haul-out data for the crabeater seal only, as observational data for the other species were not available. This assumes that haul-out patterns are constant across species, which is largely untested. Consequently, there is potential for bias, in both a relative and absolute sense, in the estimated abundance of Antarctic seals.

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Studies on the carbohydrate content of milk of the crabeater seal (Lobodon carcinophagus)

Comparative Biochemistry and Physiology Part B Comparative Biochemistry ◽

10.1016/0305-0491(88)90088-0 ◽

1988 ◽

Vol 90 (2) ◽

pp. 367-370 ◽

Cited By ~ 15

Author(s):

Michael Messer ◽

Eva A. Crisp ◽

Keith Newgrain

Keyword(s):

Carbohydrate Content ◽

Crabeater Seal ◽

Lobodon Carcinophagus

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Coordinated behavior of killer whales, Orcinus orca, hunting a crabeater seal, Lobodon carcinophagus

Canadian Journal of Zoology ◽

10.1139/z81-167 ◽

1981 ◽

Vol 59 (6) ◽

pp. 1185-1189 ◽

Cited By ~ 37

Author(s):

Thomas G. Smith ◽

Donald B. Siniff ◽

Richard Reichle ◽

Sheridan Stone

Keyword(s):

Orcinus Orca ◽

Killer Whales ◽

Crabeater Seal ◽

Lobodon Carcinophagus

A pod of seven killer whales (Orcinus orca) was seen to attack a lone crabeater seal (Lobodon carcinophagus) which was lying on an ice floe. The whale located the seal, moved away from the floating ice, then swam as a group close to the floe. This caused a wave which tipped up the ice floe and broke over it, causing the seal to be thrown into the water. The whales swam immediately to the vicinity of where the seal disappeared but it was not possible to ascertain if a kill was made.

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Size and growth of the crabeater seal Lobodon carcinophagus (Mammalia: Carnivora)

Journal of Zoology ◽

10.1017/s0952836902003072 ◽

2003 ◽

Vol 259 (1) ◽

pp. 103-108 ◽

Cited By ~ 22

Author(s):

R. M. Laws ◽

A. Baird ◽

M. M. Bryden

Keyword(s):

Crabeater Seal ◽

Lobodon Carcinophagus

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Introduction

Seal Fisheries of the Falkland Islands and Dependencies ◽

10.5949/liverpool/9780973893441.003.0001 ◽

2007 ◽

pp. 1-24

Author(s):

A.B. Dickinson

Keyword(s):

Weddell Seal ◽

Elephant Seal ◽

Falkland Islands ◽

Leopard Seal ◽

Sea Lion ◽

Crabeater Seal ◽

Fur Seal

This chapter introduces the structure and aim of the volume. It begins with an overview of the history and topography of the Falkland Islands and Dependencies, then discusses the sources of revenue on the islands, and confirming that sealing no longer occurs within the jurisdiction. It then introduces the development of commercial sealing: fishing locations; seal products - primarily meat, skin, fur, and oil; costs and profits; and the conditions aboard sealing vessels. It also provides a detailed description of different seal breeds - listing individually their habitats, features, region, uses, and profitability. The species of Falklands seals detailed are the Fur Seal; Bull and Cow Elephant Seal; Elephant Seal; Sea Lion; Leopard Seal; Weddell Seal; and Crabeater Seal. It concludes that all of the species of seals listed now enjoy protection in the Falklands, before lamenting that contemporary data concerning population figures is imprecise.

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