http://vital.seals.ac.za:8080/vital/access/manager/Index ${session.getAttribute("locale")} 5 Does the Transkei population of Haliotis Midae at the eastern edge of its distributional range have a higher thermal tolerance than those in more temperate waters? http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42814 0.05; df = 2). However, mortalities were high and growth rates low, indicating that the rearing conditions were sub-optimal, possibly masking genetic differences. No significant differences were observed in oxygen consumption rates (ANOVA, P = 0.18; df = 2), and CTM (t-Test, P = 0.31; df = 3) between the two populations. The CTM for both populations was between 29 - 30℃. The farm trial yielded no significant differences in growth rate during the Nursery phase (t-Test, P = 0.25; df = 2), however significant differences in growth rate were observed during the grow out phase with the Central region abalone offspring growing faster than the Eastern edge population (t-Test, P = 0.04; df = 4) indicating the possibility of a genetic difference between the two populations. Further experiments will be required to determine whether the differences observed in the growth trial were genetically or environmentally induced.]]> Tue 18 May 2021 14:45:49 SAST ]]> Night-time gravity waves detected with multi-frequency airglow imager http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42931 Mon 17 May 2021 13:00:31 SAST ]]>