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39 Titles Match Your Query
Showing 1 through 39 of 39
1. 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 ...


2. 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 ...


3. Blood samples analysed for albumin to determine if the lack of this protein serum is common to the Notothenioid fish group [K066_2001_2002_NZ_1]
One species of Antarctic Notothenioid fish was found to lack the common blood protein serum albumin. It was investigated if this was common to all notothenioid fish. In addition, if this blood protein ...


4. Fish tissue samples for use in phylogenetic and phylogeographic studies of notothenioid fish [K066_2001_2006_NZ_1]
Antarctica has been a frozen continent for about the last 15-20 million years. In that time, the notothenioid fish have become the dominant group of fish with about 100 new species appearing in the ...


5. The identification, function and cold adaptation of the proteins/enzymes in Antarctic fish from amount and distribution of lactate dehydrogenase from seven different tissues [K066_2000_2003_NZ_2]
The cold adaptation in the proteins/enzymes of Antarctic fish was investigated in collaboration with the American Antarctic program. The likely function of lactate dehydrogenase (LDH), the only isozyme ...


6. Using labelled antifreeze proteins placed in the gut of notothenioid fish to determine the path they take from the gut to the blood [K066_2000_2003_NZ_1]
The many fish that live in the waters around Antarctica have a unique set of adaptations to cope with the extremely cold conditions in which they live. They have developed antifreeze proteins (AFP) ...


7. 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 ...


8. 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) ...


9. 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 ...


10. 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, ...


11. 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 ...


12. Anatomical and physiological adaptations in Antarctic fishes [K022_1988_1989_NZ_1]
Dermal and epidermal chromatophore tissue of two species of fishes (Pagothenia borchgrevinki and Trematomus bernacchii) were prepared for light and transmission electron microscopy. Some specimens ...


13. Parameters affecting sensory and metabolic adaptations in Antarctic vertebrates and invertebrates [K022_1990_1991_NZ_1]
The sense organs of three species of Antarctic fish and Antarctic octopus, scallops and collembolans were fixed for electron microscopy. Pigmented spots around the oral cavity of nemertean worms, ...


14. 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 ...


15. 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 ...


16. 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 ...


17. 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 ...


18. 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 ...


19. 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 ...


20. 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, ...


21. 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 ...


22. 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 ...


23. 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 ...


24. 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 ...


25. 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 ...


26. 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 ...


27. 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. ...


28. 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 ...


29. 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 ...


30. 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 ...


31. 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 ...


32. 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 ...


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. 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 ...


35. 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 ...


36. 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 ...


37. 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 ...


38. 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. ...


39. 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.


Showing 1 through 39 of 39

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