The Nematode and Acanthocephalan Parasites of the Sheathbill, Chionis alba (Gmelin), at Signy Island, South Orkney Islands and a summary of host parasite relationships in the Sheathbill

1969 ◽  
Vol 43 (1-2) ◽  
pp. 59-67 ◽  
Author(s):  
N. V. Jones ◽  
I. C. Williams
Keyword(s):  
Orkney Islands ◽  
British Antarctic Survey ◽  
Signy Island ◽  
South Orkney Islands ◽  
Host Parasite ◽  
Trematode Parasites

We have previously reported on the cestode and trematode parasites of the Sheathbill at Signy Island (Jones & Williams 1967, 1968, 1969) and conclude with an account of the nematodes and Acanthocephala. Our previous reports were based on specimens obtained from 13 Sheathbills collected at Signy Island in July and October, 1965 by Mr. Charles Howie, British Antarctic Survey. In addition to these we have examined a further 12 Sheathbills taken at Signy Island in March, 1967. We are greatly indebted to Mr. E. A. Smith, Senior Biologist, British Antarctic Survey, for arranging the collection and transport of the latter material.

The Trematode Parasites of the Sheathbill, Chionis alba (Gmelin), from Signy Island, South Orkney Islands

1968 ◽  
Vol 42 (1-2) ◽  
pp. 65-80 ◽  
Author(s):  
N. V. Jones ◽  
I. C. Williams
Keyword(s):  
Orkney Islands ◽  
British Antarctic Survey ◽  
Signy Island ◽  
Digenetic Trematodes ◽  
South Orkney Islands ◽  
Trematode Parasites

This paper reports on two species of digenetic trematodes, namely Gymnophallus deliciosus (Olsson, 1893) and Notocotylus chionis Baylis, 1928, from Sheathbills collected on Signy Island.(lat. 60° 43' S., long. 45° 36' W.), South Orkney Islands, in July and October 1965 by Mr Charles Howie of the British Antarctic Survey. The birds were preserved in deep-freeze and later passed to us for examination. An account of the cestode parasites of these birds has been given previously (Jones & Williams, 1967).

Paramonostomum signiensis n.sp. (Trematoda: Notocotylidae) from the Sheathbill, Chionis alba (Gmelin), at Signy Island, South Orkney Islands

1969 ◽  
Vol 43 (1-2) ◽  
pp. 53-57 ◽  
Author(s):  
N. V. Jones ◽  
I. C. Williams
Keyword(s):  
New Species ◽  
Parasitological Examination ◽  
Orkney Islands ◽  
British Antarctic Survey ◽  
Signy Island ◽  
South Orkney Islands ◽  
A New Species

Through the generous co-operation of the British Antarctic Survey twelve Sheathbills were collected in April, 1967 at Signy Island, preserved in deep freeze, and made available to us for parasitological examination. Five of the Sheathbills were found to be infected with a new species of notocotylid trematode, namely Paramonostomum signiensis n.sp., which is described below and considered in relation to other species of Paramonostomum Lühe, 1909.

The Cestode Parasites of the Sheathbill, Chionis alba (Gmelin), from Signy Island, South Orkney Islands

1967 ◽  
Vol 41 (2-3) ◽  
pp. 151-160 ◽  
Author(s):  
N. V. Jones ◽  
I. C. Williams
Keyword(s):  
Atlantic Coast ◽  
Falkland Islands ◽  
Orkney Islands ◽  
British Antarctic Survey ◽  
Signy Island ◽  
South Orkney Islands ◽  
Bird Breeding ◽  
Scotia Arc

The Sheathbill is a distinctive bird breeding on the islands of the Scotia Arc and the Graham Land peninsula, and regularly occurring north to the Falkland Islands, the Magellanic Islands and the Atlantic coast of Argentina (Jones, 1963). Rather surprisingly no cestodes have previously been recorded or described from this bird.The following account describes Nototaenia fileri gen. et sp. nov. and Lateriporus ausiralis n.sp. from two of 13 adult Sheathbills collected on Signy Island in July and October 1965 by Mr Charles Howie of the British Antarctic Survey, preserved in deep-freeze, and later entrusted to us for examination.

Theudium Austroatlanticum (Verrucariaceae), A New Species from the South Orkney Islands

1993 ◽  
Vol 25 (3) ◽  
pp. 271-277 ◽  
Author(s):  
Alan Orange
Keyword(s):  
New Species ◽  
The South ◽  
Orkney Islands ◽  
Signy Island ◽  
South Orkney Islands ◽  
A New Species

AbstractThelidium austroatlanticum sp. nov. is described from Signy island; it is characterized by an epilithic thallus, more or less appressed involucrellum, and 1-septate spores 30–40 μm long. Thelidium incavatum is also reported for Signy Island.

scholarly journals Snowmelt modelling on signy island, South Orkney Islands

1998 ◽  
Vol 26 ◽  
pp. 161-166 ◽  
Author(s):  
Michael J. Gardiner ◽  
J. Cynan Ellis-Evans ◽  
Malcolm G. Anderson ◽  
Martyn Tranter
Keyword(s):  
Snow Water Equivalent ◽  
Energy Content ◽  
Heat Fluxes ◽  
Geographical Information ◽  
Wave Radiation ◽  
Snow Pack ◽  
State Variables ◽  
Orkney Islands ◽  
Signy Island ◽  
South Orkney Islands

The ability of the Utah energy-balance and snowmelt model (UEB) to simulate decline in snow water equivalent (SWE) at an extreme location was assessed. Field data were collected at Paternoster Valley, Signy Island, South Orkney Islands (60°43′S) during the austral summer of 1996–97. This is the first application of UEB in a maritime Antarctic site. UEB is a physically based snow melt model using a lumped snow-pack representation with primary state variables SWE and snow pack-energy content(U).Meteorological inputs are air temperature, wind speed, humidity, precipitation and total incoming solar and longwave radiation. The Paternoster Valley catchment was subdivided into eight non-contiguous terrain classes for sampling and modelling using a geographical information system (GIS). Simulations of SWE in each of these classes were compared พ with field observations. It is shown that initialUand snow-surface thermal conductance(Ks)affect model simulations. Good approximations of SWE depletion are obtained using measured incoming solar radiation to drive the model but there are shortcomings in the characterization of long wave radiation and sensible-heat fluxes.

A fern cultured from Antarctic glacier detritus

2013 ◽  
Vol 26 (4) ◽  
pp. 341-344 ◽  
Author(s):  
R.I. Lewis Smith
Keyword(s):  
Maritime Antarctic ◽  
Orkney Islands ◽  
Ice Cap ◽  
Signy Island ◽  
South Orkney Islands ◽  
Mode Of Transport

AbstractA fem, Elaphoglossum hybridum (Bory) Brack., has been cultured from mineral sediment in cryoconite holes in the ice cap of Signy Island, South Orkney Islands. Its provenance, mode of transport to its Maritime Antarctic destination and the significance of viable exotic propagules as potential colonists are discussed.

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