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1. Mutation and extinction rates in Adelie penguin (Pygoscelis adeliae) populations from fossil bones and blood samples collected from several sites in the Ross Sea Region [K030_2001_2005_NZ_1]
Recent studies on the evolution of mitochondrial DNA in Adelie penguins has found high rates of mutation sparking a major controversy and raising the question of whether evolutionary rates are high ...


2. The evolution of microsatellite and mitochondrial genes of Adelie penguins (Pygoscelis adeliae) from DNA samples taken from stratified subfossil penguin bones at penguin colonies [K030_1996_1999_NZ_1]
Evolutionary changes in microsatellite and mitochondrial genes of Adelie penguins was investigated to provide knowledge about the genetic processes and mechanisms that give rise to variation and change ...


3. Behavioral observations, blood and fecal samples taken from Adelie penguins at Shell Glacier and Cape Crozier to detect the impact of human disturbance [K027_2003_2006_NZ_1]
Long term studies of the impacts of human disturbance on adelie penguins using a range of key behavioural, ecological and physiological measures are required to establish logical management regimes ...


4. Analysis of samples (cloaca, blood and tissue) from Adelie penguins and Weddell seal samples for influenze viruses from Cape Bird [K251_1985_1986_NZ_1]
There is evidence that some influenza pandemics are caused by influenza viruses which have acquired new antigens from avian viruses. In order to understand the conditions under which antigens are ...


5. Measurements of metabolic rate, osmotic pressure and blood volume of pycnogonids from Antarctica [K057_1985_1986_NZ_2]
Several individuals of several species of pycnogonids (sea spiders) were obtained from the aquarium at McMurdo Station. Measurements of metabolic rate, osmotic pressure and blood volume was determined ...


6. Morphological examination of x-cell affected gills from Pagothenia borchgrevinki [K057_1987_1988_NZ_2]
During the 83-84 season, several Pagothenia borchgrevinki fish were collected which had damaged gills. The gill filaments were white, instead of the usual red colour due to blood perfusion and also ...


7. Oxygen consumption rates and lactic acid levels of notothenioid fish to determine the exercise physiology of how a low water temperature has affected their ability to swim [K057_1985_1986_NZ_1]
Notothenioid fish live in a relatively constant temperature of -1.86?C. In order to survive at this temperature they have undergone several modifications to their biochemical makeup. The ability of ...


8. Oxygen uptake rates of Pagothenia borchgrevinki fish affected with x-cell at rest and in strenuous exercise and morphological examination of x-cell affected gills [K057_1987_1988_NZ_1]
During the 83-84 season, several Pagothenia borchgrevinki fish were collected which had damaged gills. The gill filaments were white, instead of the usual red colour due to blood perfusion and also ...


9. The muscle histochemistry and characterization of different metabolic types in fin and trunk muscles investigated on Antarctic fish [K057_1983_1984_NZ_1]
The muscle histochemistry and characterization of different metabolic types in fin and trunk muscles was investigated on Antarctic fish. Frozen sections were cut and examined and interactions and ...


10. Adelie penguin weights before and after foraging trips from three groups of penguins: control, single egg removed and penned females [K063_1987_1988_NZ_2]
As an index of physiological condition and success of foraging, penguins were weighed early in the season when they were flipper banded and then re-weighed when they returned from their foraging trip. ...


11. Behavioural observations of nest site selection in Adelie penguins at Cape Bird [K121_1986_1987_NZ_2]
Virtually all penguins return to their natal rookeries to breed, after spending a couple of years at sea. A majority of young birds of both sexes end up settling within 200 m of their natal nest ...


12. Measurements of factors affecting the timing of nest relief in Adelie penguins at Cape Bird [K121_1986_1987_NZ_1]
The timing of nest relief is crucial to the nesting success of adelie penguins. Experiments were conducted to test whether the physiological conditions of the female will determine how long she stays ...


13. The length of a female adelie penguin foraging trip after being prevented from going to sea [K063_1987_1988_NZ_1]
One potential proximate cause of the timing of the nest relief cycle of adelie penguins was investigated by testing the hypothesis that the females count the days that they are gone from the nest ...


14. Lipid transport, lipid metabolism and cold adaptation in Antarctic notothenioid fish [K058_2005_2008_NZ_1]
Fish species of the suborder Notothenioidei are morphologically distinct in that they lack a swim bladder. To compensate, high levels of tissue lipids aid in maintaining buoyancy. The lipids also ...


15. Metabolic changes of notothenioid fish in relation to nutritional status [K058_2007_2008_NZ_1]
Individuals of Trematomus bernacchii and Pagothenia borchgrevinki were captured and used in an experiment to understand metabolic changes, especially pertaining to the lipid transport system (lipoproteins) ...


16. Plasma protein profiles of severely ice-damaged Notothenioidei fish [K058_2005_2008_NZ_2]
A small percentage of the notothenioid fish caught in the McMurdo Sound or Terra Nova Bay region were found to have what was classed as ice damage (oedema) in their eyes, potentially resulting from ...


17. Reproductive biology of notothenioid fish - Analysis of gonadal development from a number of species [K058_2005_2008_NZ_3]
Fish species of the suborder Notothenioidei were captured in the McMurdo Sound or Terra Nova Bay region and basic biological measurements were taken for all fish (length, weight, gonadosomatic indices, ...


18. The thermal acclimation ability of notothenioid fish species [K058_2007_2008_NZ_2]
Several individuals of Trematomus bernacchii and Pagothenia borchgrevinki were captured and used in an experiment to understand the ability of these fish to acclimate to increased temperatures. Individuals ...


19. Physiology of Arthropods (Collembola) at Cape Hallett [K140_2002_2003_NZ_2]
Environmental physiology of three species of springtails (Hexapoda: Collembola): (1) Isotoma klovstadi (Isotomidae), (2) Cryptopygus cisantarcticus (Isotomidae) and (3) Friesia grisea ...


20. Blood and faecal samples from Adelie and emperor penguins at Cape Washington and Mandible Cirque, Ross Sea Region, Antarctica [K034_2001_2005_NZ_14]
Blood and faecal samples were collected from 96 emperor penguins at Cape Washington and from 29 Adelie penguins at Mandible Cirque. Plasma concentrations of corticosterone will be measured ...


21. Muscle histochemistry and characterization of the different metabolic types in fin and trunk muscles [K012_1983_1984_NZ_2]
Four species of Antarctic fish were collected near Scott Base including Pagothenia borchgrevinki, Dissostichus mawsoni, Trematomus bernacchii (all from the Ross Sea) and Rhigophila dearborni (obtained ...


22. Anatomical studies of the development of the eyes and lateral line system and sensory regions of the brain to test the ontogenetic shift hypothesis in the Antarctic fish Pleurogramma antarcticum [K012_1995_1996_NZ_1]
The notothenioid fish were found to have adapted to the low light conditions of under fast ice and during the Antarctic winter with well developed mechanosensory lateral line system that allows them ...


23. Early life stages in the life cycle of Antarctic silverfish, Pleuragramma antarcticum [K012_1998_1999_NZ_1]
Mature eggs were expressed from a gravid icefish at Terra Nova Bay and fertilized successfully in vitro. Development was followed for about 15 days, but was curtailed by the end of the season. Development ...


24. Measurement and comparison of miniature end plate currents between notothenioid Antarctic fish species [K012_1998_2000_NZ_2]
To determine if cold-adaptation of neuromuscular ion currents, as reported for Mini End Plate Currents (MEPCs) of one Antarctic fish species, Pagothenia borchgrevinki is a widespread feature of ther ...


25. Recordings from the lateral line nerve of Trematomus pennelli to determine if superficial neuromasts can be identified in the lateral line nerves [K012_1998_2000_NZ_1]
To determine if the superficial neuromasts, capable of reporting constant smooth water movement, can be identified in the lateral line nerves of Antarctic fish species was investigated. Recordings ...


26. Video recordings of underwater tracks of fish approaching an olfactory stimulus released into the water column to determine the search strategy used by Antarctic fish [K012_1995_1996_NZ_2]
Two branches exist in the mechanosensory lateral line in Antarctic fish: the canal system and superfiscial neuromasts. Behavioural evidence shows that the canal system is used for prey detection but ...


27. A series of experiments to characterize the neuromuscular transmission in Antarctic fishes (Pagothenia borchgrevinki) and the effects of temperature on these reactions [K012_1978_1980_NZ_1]
The low temperature adaptations involved in neuromuscular transmission in Antarctica fish was characterized. An exploratory dissection of Pagothenia borchgrevinki revealed that the inferior oblique ...


28. Analysis of bottom sediment and water samples near Scott Base to determine the effects of effluents on the marine environment [K012_1994_1995_NZ_3]
The effects of Scott Base effluents on the marine environment was investigated by collecting bottom sediments and water samples on both side of the pressure ridges at Pram Point, near Scott Base. ...


29. Blood buffering capacity of muscles of the Antarctic fish Dissostichus mawsoni, Pagothenia borchgrevinki, Trematomus centronotus, P. macropterus and Rhigophila dearborni [K012_1986_1987_NZ_2]
Temperature is an environmental factor which has profound effects on both aerobic and anaerobic activities. During aerobic activity, hydrogen ions from acidic metabolites are consumed by oxidative ...


30. Contraction rates of muscles and measurements of the input and output parameters of the vestibulo-ocular reflex action in the Antarctic fish Pagothenia borchgrevinki [K012_1984_1985_NZ_2]
In order to fully describe the input and output parameters of the vestibulo-ocular reflex, simultaneous recordings are required of head movement, sensory input from the semicircular canals, motor ...


31. Electroretinograms, retina analysis, behavioural observations and gut content and clearance rate of notothenioid Antarctic fish to determine the importance of visual function in feeding [K012_1987_1988_NZ_1]
The visual function in Pagothenia borchgrevinki was investigated in relation to their feeding by relating feeding with the vertical stratification of zooplankton and then determining their visual ...


32. Estimates of the amount of neuromuscular transmitter released by motor nerve terminals at different temperatures in the Antarctic fish Pagothenia borchgrevinki [K012_1982_1983_NZ_3]
The number of quantal doses of acetylcholine released by a nerve to activate a muscle can be estimated by recording repeated responses (end plate potentials of EPPs) to nerve stimulation and calculating ...


33. Haemotological characterization of Antarctic fish blood from Antarctic fish and the giant isopod [K012_1978_1980_NZ_2]
Blood samples were taken from 8 Antarctic Notothenioids (e.g. Pagothenia borchgrevinki, Trematomus hansoni, T. centronotus, T. bernacchii, T. newnesi, Dissostichus mawsoni) and one species each of ...


34. Investigations of haematological parameters, the level of red cell ATP and blood lactate in the blood of resting and exercising Antarctic fish at cold and warm temperatures [K012_1977_1978_NZ_2]
The level of adenosine triphosphate in fish blood and its role in regulating oxygen uptake by fish haemoglobins was examined. Various haematological parameters, red cell ATP and blood lactate were ...


35. Investigations of the neurobiology of the lateral line sensory system and its use in feeding and behaviour in Antarctic fish [K012_1989_1992_NZ_1]
The anatomy, physiology and behaviour of Antarctic fishes and their use of the lateral line sensory system was investigated over three field seasons. Methodologies for comparing lateral line function ...


36. Measurement of the effects of pH and temperature on the oxygen binding properties (oxygen affinity) and ATP concentrations in whole blood of Antarctic fish [K012_1982_1983_NZ_1]
Many Antarctic fishes have taken advantage of the combination of low oxygen requirements and high availability of oxygen by reducing the number of erythrocytes and the amount of intracellular haemoglobin. ...


37. Measurement of the vibrations the sensory neurons of the anterior lateral line can detect in the Antarctic fish Pagothenia borchgrevinki in relation to prey detection [K012_1985_1986_NZ_2]
A study of predator-prey interaction was focussed into an investigation of non-visual sensory interaction between Pagothenia borchgrevinki and its prey. Recordings were made from sensory neurons of ...


38. Measurements of the caridac, hematocrit and haemoglobin concentration recovery rates from exercise and in response to cardioregulatory drugs of Pagothenia borchgrevinki, T. bernacchii and Rhigophila dearborni [K012_1988_1989_NZ_2]
Electrocardiograms were recorded for Pagothenia borchgrevinki, T. bernacchii and Rhigophila dearborni while the fish were immobilised by artificial ventilation of the gills by rapid water flow over ...


39. Measurements of the quantal content in neuromuscular transmission of the Antarctic fish Pagothenia borchgrevinki - end plate potential recordings from muscle fibres [K012_1984_1985_NZ_1]
The Antarctic fish Pagothenia borchgrevinki was captured from near Scott Base and used to measure the quantal content in neuromuscular transmission of Antarctic fish. The amount of neurotransmitter ...


40. Measurements of the viscosity of blood and plasmas at various temperatures and shear rates in Antarctic notothenioids, zoarcids, channichthyids and a New Zealand notothenioid [K012_1988_1989_NZ_1]
The viscosity of blood and plasma was measured from the Antarctic notothenioids Pagothenia borchgrevinki, Trematomus bernacchii, T. centronotus and Dissostichus mawsoni, from the Antarctic zoarcid ...


41. Metabolic and biochemical consequences of niche specialization of Antarctic fish - heat stressed proteins, metabolite levels, nucleotide ratios, neurotransmitters, muscle buffering capacity, blood erythrocytes [K012_1992_1995_NZ_1]
Antarctic notothenioid fishes have radiated to fill a range of ecological niches, forming an assemblage of over a hundred closely related species. Some groups have developed extreme specializations ...


42. Miniature end plate currents recorded from Pagothenia borchgrevinki muscle at different temperatures and measurements of the function of the oculomotor (eye movement response) control system [K012_1981_1982_NZ_1]
Miniature end plate currents (MEPC) were recorded from fish muscle of Pagothenia borchgrevinki to test the hypothesis that the high proportion of unsaturated lipids will result in increased membrane ...


43. Physiological control of the heart and pH balance in Antarctic fish: An adaptation to cold temperatures [K012_1986_1987_NZ_1]
Changes in temperature are thought to affect the relative contributions of the excitatory adrenergic and inhibitory parasympathetic nerves to the vertebrate heart. Investigations of the heart function ...


44. Temperature selection, locomotion and feeding behaviour of Antarctic fish [K012_1983_1984_NZ_3]
To test the ability of Antarctic fishes to perceive and react to temperature differences, a temperature gradient from -1.8?C to +5.4?C was set up in a trough and fish were monitored to see which part ...


45. The effects of pH and drugs on miniature end plate current decay in extraocular muscles of the Antarctic fish Pagothenia borchgrevinki [K012_1982_1983_NZ_2]
Previous experiments indicated that miniature end plate currents (MEPCs) from extraocular muscles of Antarctic fish decay significantly faster than MEPCs from New Zealand temperate fish. As the Antarctic ...


46. The effects of temperature and pH on collegen denaturation at fish skin contractions in Antarctic fish [K012_1988_1989_NZ_4]
Measurements of fish skin contraction as a function of temperature and pH and the effects of temperature on denaturation of collagen was investigated by incubating strips of skin from several notothenioid ...


47. The effects of temperature on conduction of the nervous impulse and transmission of the impulse from nerve to muscle in two Antarctic fish and an isopod [K012_1977_1978_NZ_1]
The pattern of cold adaptation in the nervous system of Antarctic fish, with particular attention to the effects of temperature changes on conduction of the nervous impulse and on transmission of ...


48. The histological development of blood cells and identification of erythropoietin in the red blooded Antarctic notothenioid species [K012_1994_1995_NZ_1]
A joint program with the Italian program investigated erythropoesis (formation of red blood cells) and red cell turn over in the red blooded Antarctic fishes. A range of fish tissues was collected ...


49. The neural biology of Antarctic fish: Measurements of the neural activity from fish semicircular canals in response to head movement [K012_1983_1984_NZ_1]
The input and outputs of a well defined reflex pathway (the vestibulo-ocular reflex - VOR) was described in Antarctic fish to assess the mechanisms of neural cold adaptation at low temperatures. The ...


50. The respiratory physiology of Antarctic fish: resting metabolism, dermal respiration and haemoglobin denaturation investigations [K012_1984_1985_NZ_3]
Metabolic studies were made on 4 common species of notothenioids; Pagothenia borchgrevinki, Trematomus bernacchii, T. centronotus, T. hansoni and on one zoarcid species Rhigophila dearborni. Fish ...


Showing 1 through 50 of 53 Next

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