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15 Titles Match Your Query
Showing 1 through 15 of 15
1. UV radiation penetration through sea ice & effects on embryo & larval development, survival & damage of the sea urchin Sterechinus neumayeri, Antarctic Starfish Odontaster validus & Odontaster meridionalis in Ross Sea [K068_2002_2013_NZ_1]
UV radiation transmission measurements on sea ice surface and through the annual sea ice into the underlying water column were made during Antarctic spring months (October - November) along with ...


2. The direct effects of UV radiation on embryo and larval development and survival, and DNA damage of Sterechinus neumayeri [K068_2002_2006_NZ_2]
Gastrulation is a critical point in the development of an embryo. Damage to embryos prior to gastrulation via UVR effects on cytokinesis or DNA will have a dramatic negative effect on embryo survival. ...


3. The fundamental physiology and biology processes of Sterechinus neumayeri embryos and larvae and how they are affected by increased UV radiation, McMurdo Sound [K068_2007_2008_NZ_1]
Three key processes in the embryos and larvae of the sea urchin Sterechinus neumayeri were examined to determine how they respond to environmental changes. In situ experiments were carried out at ...


4. The activity and expression of DNA repair/photoreactivation with the enzyme photolyase in the sea urchin Sterechinus neumayeri, McMurdo Sound [K068_2003_2004_NZ_1]
An important aspect of understanding the impact of increased UVR is assessing the ability of Antarctic species to repair DNA damaged through the process of photoreactiviation or photorepair. To repair ...


5. UV radiation penetration through sea ice & effects on embryo & larval development, survival & damage of the sea urchin Sterechinus neumayeri, Antarctic Starfish Odontaster validus & Odontaster meridionalis in Ross Sea [K068_2002_2009_NZ_1]
UV radiation transmission measurements on sea ice surface and through the annual sea ice into the underlying water column were made during Antarctic spring months (October - November) along with ...


6. Reconnaissance of the Balleny Islands [K017_1963_1964_NZ_1]
A reconnaissance expedition took place around the Balleny Islands in the 1963-1964 field season with the objective to examine the four beaches where landings had previously been made and to search ...


7. A survey of the density of starfish and sea urchins to determine the grazing pressure of these species on a sponge dominated reef, Cape Armitage [K054_1988_1989_NZ_3]   PARENT DIF
In order to determine the grazing pressure of starfish and sea urchin species on the benthic community of a reef at Cape Armitage, a survey was made of these species densities. The survey was stratified ...


8. Analysis of the community structure of subtidal reefs at Cape Armitage (species composition of invertebrates and fish, sediment spicule mat depth, sediment type, sedimentation rates and tissue sampling for analysis) [K054_1987_1989_NZ_1]   CHILD DIFs
A dive site was selected at Cape Armitage to conduct a marine benthos survey. The water was approximately 25m deep and the bottom was found to be rocky and inhabited by sponges. Other sites were ...


9. Analysis of the reef slope community structure at Pram Point (species composition of invertebrates and fish, sponge reproduction, sediment type, sedimentation rates and tissue sampling for analysis) [K054_1991_1992_NZ_1]   CHILD DIFs
The reef community at Cape Armitage was surveyed over two seasons (1987/88 and 1988/89). This community exists on a fan like shallow slope platform. In the same season, Pram Point was initially assessed ...


10. Obtaining action spectrum and biological weighting functions for UVR effects on larvae of a suite of Antarctic invertebrates, McMurdo Sound [K068_2004_2006_NZ_1]
The effect of UVR on biological systems is wavelength dependent. Action spectrum for DNA damage is an essential component of understanding the effects of increased UVB on a range of Antarctic invertebrate ...


11. The ability to photorepair UV damaged DNA and the rate of photoreactivation in Antarctic species compared with temperate and tropical species [K068_2004_2006_NZ_2]
Time course experimental exposure of the Antarctic sea urchin Sterechinus neumayeriembryos to UVR was carried out in a lab to examine the kinetics of UVR induced damage to DNA. Embryos (freshly fertilized ...


12. The ability to photorepair UV damaged DNA and the rate of photoreactivation in two Antarctic Starfish Odontaster validus and Odontaster meridionalis compared with a New Zealand species Odontaster benhami [K068_2004_2006_NZ_3]
Photorepair rates in New Zealand temperate species of echinoderms show a much higher DNA photorepair than the Antarctic species Sterechinus neumayeri. To examine the reason for low rates of DNA photorepair ...


13. The degree that UV-B absorbing compounds provide UV-R protection in embryos and larvae of the sea urchin Sterechinus neumayeri: A comparison with adults [K068_2002_2003_NZ_1]
The degree that UV-B absorbing compounds provide UV-R protection was examined in four early developmental stages of the sea urchine Sterechinus neumayeri from Cape Armitage, McMurdo Sound. Adult Sterechinus ...


14. The structure and function of fish and crustacean photoreceptors [K022_1978_1979_NZ_1]
Electroretinograms and intracellular recordings were conducted on the giant Antarctic isopod Glyptonotus as well as the common amphipod Orchomene plebs. Eye material from starfish, marine mites, isopods ...


15. The relationship between sediment texture, micro-organisms (diatom and Foraminifera), water depth and current to 100m along the Victoria Land coast from Trip Island to Cape Armitage, McMurdo Sound [K042_1987_1988_NZ_1]
The relationship between sediment texture, micro-organisms (diatom and Foraminifera), water column currents and water depth was investigated along the shoreline (to the 100m contour) of the Victoria ...


Showing 1 through 15 of 15

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