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42 Titles Match Your Query
Showing 1 through 42 of 42
1. Digital data recorder recordings of changes in biological rhythms when humans move from regular night/day cycles in low latitudes to continuous daylight in high latitudes [K012_1983_1984_NZ_4]
Members of the Antarctic Project of the University of Auckland (APUA) group wore digital data recorders (Vitalogs) connected to temperature probes, electrocardiograph electrodes and movement sensors ...


2. Estimates of the population density of Trematomus bernacchii at Cape Roberts and Cape Evans [K012_2000_2002_NZ_1]
The population density of the bottom dwelling Antarctic fish Trematomus bernacchii was estimated using the mark and recapture method and underwater video surveillance. Two sites were fished over two ...


3. Analysis the diet of Pagothenia borchgrevinki from stomach contents and plankton sampling near Scott Base [K012_1985_1986_NZ_1]
Samples of 20 fish of Pagothenia borchgrevinki were collected every second or third day over the course of the study period near Scott Base. The stomach contents of each fish were extracted, weighed ...


4. The vertical distribution of zooplankton in the Cape Armitage area [K012_1987_1988_NZ_2]
The vertical distribution of zooplankton was determined in the Cape Armitage area. A large number of samples were taken by streaming plankton nets at a range of depths over the top 200m. These samples ...


5. Collection of benthic Antarctic fishes to determine isopod ectoparasite species distribution and host specificity and collection of specimens for a museum reference collection [K012_1981_1982_NZ_2]
142 specimens of small benthic fishes were captured at Cape Royds and examined for ectoparasites. Where practical, fishes with isopod ectoparasites were retained to obtain additional information on ...


6. 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 ...


7. Determination of the development rate of the choroid rete, the visual behaviour, the effect of stress on visual behaviour and the metabolice response of two Antarctic fish to exercise stress [K012_2000_2001_NZ_1]
In Antarctic fish, retinal function is critically dependent on oxygen supply and in some fishes additional oxygen can be unloaded through a choroid rete at the back of the retina. The relative development ...


8. 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 ...


9. 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 ...


10. 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 ...


11. The distribution, embryological development and effects of temperature on the eggs and larvae of Pleuragramma antarcticum from Terra Nova Bay, Antarctica [K012_2005_2006_NZ_1]
Little is known of the early development of Pleuragramma antarcticum prior to hatching. Abundant eggs and larvae were collected under the sea ice from Terra Nova Bay in October and November. The distribution, ...


12. Video recordings of Antarctic fish behaviour to determine if they have a circadian activity rhythms [K012_2001_2002_NZ_1]
An underwater video camera was set up at a 6m depth at Cape Evans to record the behaviour of Antarctic fish. Fish movements were monitored and regular video recordings were made 24 hours a day for ...


13. 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 ...


14. 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 ...


15. 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. ...


16. 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 ...


17. Collection and identification of marine crustaceans in McMurdo Sound to identify ectoparasitic isopods from McMurdo Sound fish species [K012_1994_1995_NZ_2]
A variety of small crustaceans from diverse sources, including benthic traps, bottom grab and hand collection by USAP divers were collected to identify ectoparasitic isopods from McMurdo Sound fish ...


18. Collection of Antarctic terrestrial insects from Cape Royds, New Harbour/Taylor Valley [K012_1981_1982_NZ_4]
Collection of terrestrial insects (collembolans) were made wherever possible to extend distribution records, and to characterize preferred habitats for the insects. Collections of collembola (springtails) ...


19. 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 ...


20. 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 ...


21. 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 ...


22. 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 ...


23. 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 ...


24. 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 ...


25. Mark and recapture study of Trematomus bernacchii at Cape Royds [K012_1981_1982_NZ_3]
A mark and recapture study of Trematomus bernacchii was proposed for the Cape Royds area to estimate population size and degree of mobility within the population. Fish were tagged with color coded ...


26. 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. ...


27. 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 ...


28. 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 ...


29. 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 ...


30. 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 ...


31. 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 ...


32. 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 ...


33. 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 ...


34. Size range and sex ratio of the amphipod Hyperiella dilatata taken by fish, caught in plankton nets and those associated with jellyfish [K012_1987_1988_NZ_3]
Aspects of the biology of the amphipod Hyperiella dilatata was investigated including comparisons of size range and sex ratio of individuals taken by the fish, and those caught in plankton nets, with ...


35. 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 ...


36. 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 ...


37. 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 ...


38. 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 ...


39. 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 ...


40. 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 ...


41. The viscosity of the endolymph in Pagothenia borchgrevinki and Dissostichus mawsoni to assess the relative degrees of cold compensation at different stages in the vestibulo-ocular reflex arc [K012_1988_1989_NZ_3]
Endolymph (inner ear fluid) from the semicircular canals was collected from Pagothenia borchgrevinki and Dissostichus mawsoni by dissecting the mid brain to expose the intact vestibular apparatus. ...


42. Tissue collection for molecular and morphological phylogenetics of Antarctic fishes [K012_1989_1992_NZ_2]
Tissue was collected for molecular analysis of evolutionary relationships in the notothenioids. Material from 10 notothenioids and 2 zoarcids was collected and analysed.


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