On some aspects of the biology of the Ross seal Ommatophoca rossii from King Haakon VII Sea, Antarctica

  title={On some aspects of the biology of the Ross seal Ommatophoca rossii from King Haakon VII Sea, Antarctica},
  author={John D. Skinner and Norbert T. W. Klages},
  journal={Polar Biology},
A total of 40 (29 female and 11 male) Ross seals were sampled in January over three years. Seals were weighed, measured and age determined by counting dentine lines in teeth. Stomach contents were identified against reference material and species of helminths were determined using standard techniques. Asymptotes in body mass and length are reached at some nine years of age. Age class varied from 2–20 years. Antarctic silverfish Pleurogrammma antarcticum was the only fish species identified… 

Limited use of sea ice by the Ross seal (Ommatophoca rossii), in Amundsen Sea, Antarctica, using telemetry and remote sensing data

Their pelagic behaviour suggests that Ross seals, although being an ice obligate species, may adapt comparatively easy to climate change involving ice melting and recession and thereby potentially being less sensitive to the reduction of sea ice than other Antarctic seal species.

The role of notothenioid fish in the food web of the Ross Sea shelf waters: a review

The Ross Sea, a large, high-latitude (72–78°S) embayment of the Antarctic continental shelf, averages 500 m deep, with troughs to 1,200 m and the shelf break at 700 m, and the food web is non-linear, with complex prey-predator interactions.

Southern Ocean cephalopods.

Diving behaviour of two Ross seals off east Antarctica

The Ross seal is the least frequently sighted and least known of the Antarctic pinnipeds and its dive patterns suggest that their prey species, thought to comprise mostly fish and squid, were relatively unavailable at depths <100 m.

Ross Seal: Ommatophoca rossii

Plasticity in the morphometrics and movements of an Antarctic apex predator, the leopard seal

Animals that display plasticity in behavioral, ecological, and morphological traits are better poised to cope with environmental disturbances. Here, we examined individual plasticity and

Haul-out behaviour of two Ross seals off eastern Antarctica

  • C. Southwell
  • Environmental Science, Geology
    Antarctic Science
  • 2003
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.

Advances in New Zealand mammalogy 1990–2000: Pinnipeds

The New Zealand fur seal (Arctocephalus forsteri) is the only fur seal which can be called a permanent resident of the New Zealand mainland. It also breeds on Macquarie Is.: about 1200 A. forsteri

The timing of pupping by pack-ice seals in East Antarctica

Observations of the presence or absence of pups with adults during numerous voyages of the Australian National Antarctic Research Expeditions to East Antarctica during spring and early summer months are analysed and presented to provide circumstantial evidence that the maximum durations of lactation reported in the literature for the three species may be over-estimates.

Distribution and Habitat Suitability of Ross Seals in a Warming Ocean

Understanding the determinants of poorly studied species’ spatial ecology is fundamental to understanding climate change impacts on those species and how to effectively prioritise their conservation.



Aspects of reproduction in female Ross seals (Ommatophoca rossii).

The finding of a high percentage of females with a corpus luteum, but with no fetus in the uterus, together with histological characteristics of the ovarian structures, provide circumstantial evidence for delayed implantation in Ross seals.


Estimates of fish biomass from net hauls demonstrate a highly variable availability of pelagic food resources for top predators in the Vestkapp area.

Cephalopod Fauna of the Scotia Sea at South Georgia: Potential for Commercial Exploitation and Possible Consequences

Comparison of data indicates that predators catch larger specimens and a greater diversity of species than nets, and it is likely that Antarctic stocks will be sensitive to exploitation and liable to dramatic fluctuations if overfished.

Cephalopod prey of the grey-headed albatrossDiomedea chrysostoma

The relative proportions of cephalopod species in the chicks' diet were similar between 1984 and 1986, but the total number and biomass was significantly less in 1984.

Diet and Energy Budget of the Antarctic Fur Seal, Arctocephalus gazella , at South Georgia

From data on diet and foraging ranges and depths, the main natural competitor of the Antarctic Fur Seal is the Macaroni Penguin, Eudyptes chrysolophus; significant competition with a developed Krill fishery would be expected.

Food and feeding ecology of emperor penguins in the eastern Weddell Sea

  • N. Klages
  • Environmental Science
    Polar Biology
  • 2004
The prey composition suggests two different feeding strategies, shallow dives exploring the rugged underside of sea ice where krill is taken, and deep dives when mesopelagic fish and squid are consumed.

Continental Estimates and Population Trends of Antarctic Ice Seals

Seal census data accrued during 1968–1983 were incorporated into a standard data format and revised density estimates were calculated. A key element in this reanalysis was time correction of the

Observations on population density of Culex quinquefasciatus and transmission indices of Bancroftian filariasis during and after Integrated Vector Management strategy.

The results suggest that maintenance of vector density at reduced levels for prolonged periods, is necessary to control infectious diseases like filariasis, which is difficult in the present day urban situations in developing countries.

Seals. In Laws RM (ed) Antarctic Ecology

  • 1984