${session.getAttribute("locale")} 5 A comparison of three techniques for fluorochrome marking of juvenile Clarias gariepinus otoliths Wed 12 May 2021 20:55:58 SAST ]]> Detecting impacts of invasive non-native sharptooth catfish, Clarias gariepinus, within invaded and non-invaded rivers. Wed 12 May 2021 20:55:12 SAST ]]> Life history and population dynamics of invasive common carp, Cyprinus carpio, within a large turbid African impoundment Thu 29 Jul 2021 16:22:45 SAST ]]> Effect of turbidity on the foraging success of Glossogobius callidus (Teleostei: Gobiidae) Thu 15 Jul 2021 19:45:36 SAST ]]> Inter-seasonal persistence and size-structuring of two minnow species within headwater streams in the Eastern Cape, South Africa Thu 13 May 2021 03:22:53 SAST ]]> Age validation, growth, mortality, and demographic modeling of spotted gully shark (Triakis megalopterus) from the southeast coast of South Africa 0.05), and von Bertalanffy growth model parameters for combined sexes were estimated to be L∞=1711.07 mm TL, k=0.11/yr and t0= –2.43 yr (n=86). Natural mortality was estimated at 0.17/yr. Age at maturity was estimated at 11 years for males and 15 years for females. Results of the demographic analysis showed that the population, in the absence of fishing mortality, was stable and not significantly different from zero and particularly sensitive to overfishing. At the current age at first capture and natural mortality rate, the fishing mortality rate required to result in negative population growth was low at F>0.004/ yr. Elasticity analysis revealed that juvenile survival was the principal factor in explaining variability in population growth rate.]]> Thu 13 May 2021 02:39:30 SAST ]]>