https://commons.ufh.ac.za/vital/access/manager/Index en-us 5 https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45039 Wed 30 Mar 2022 14:23:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44955 Wed 29 Jun 2022 16:01:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45217 Wed 29 Jun 2022 15:19:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45278 Wed 29 Jun 2022 12:59:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45190 Wed 29 Jun 2022 11:56:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45171 Wed 25 May 2022 15:54:35 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45265 Wed 24 Nov 2021 15:28:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45204 Wed 24 Nov 2021 14:53:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45181 Wed 24 Nov 2021 14:25:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45205 Wed 24 Nov 2021 13:08:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45173 Wed 24 Nov 2021 10:34:10 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45177 Wed 23 Mar 2022 15:47:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45186 Wed 23 Mar 2022 12:24:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45269 Wed 23 Mar 2022 11:35:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45196 Wed 23 Mar 2022 10:04:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45027 Wed 22 Jun 2022 13:13:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45254 Wed 20 Apr 2022 15:00:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45191 Wed 20 Apr 2022 14:32:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45187 Wed 20 Apr 2022 11:51:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45283 Wed 16 Mar 2022 15:50:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44963 Wed 16 Mar 2022 15:05:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45211 Wed 16 Mar 2022 13:06:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45180 Wed 16 Mar 2022 12:31:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44966 Wed 16 Mar 2022 12:03:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45046 Wed 13 Apr 2022 15:19:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44806 Wed 13 Apr 2022 14:16:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45147 Wed 11 May 2022 12:11:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45040 Wed 06 Jul 2022 10:32:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45073 Wed 06 Jul 2022 08:47:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45062 Wed 06 Apr 2022 14:31:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45146 Wed 06 Apr 2022 12:17:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45253 Wed 06 Apr 2022 09:09:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45212 Wed 04 May 2022 14:37:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45188 Wed 04 May 2022 12:45:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45198 Wed 04 May 2022 09:01:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45063 Wed 02 Mar 2022 16:47:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45072 Wed 02 Mar 2022 12:24:25 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44793 Tue 16 Nov 2021 19:35:25 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44747 Tue 16 Nov 2021 17:55:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45225 Tue 16 Nov 2021 13:35:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45224 Tue 16 Nov 2021 13:34:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45223 Tue 16 Nov 2021 13:34:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42938 Tue 16 Nov 2021 09:37:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57273 Tue 11 Oct 2022 11:14:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45248 Tue 11 Jul 2023 15:41:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45192 Tue 08 Feb 2022 09:57:35 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44953 Tue 08 Feb 2022 09:15:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45169 Tue 07 Jun 2022 16:22:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45244 Tue 05 Mar 2024 08:20:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45260 Tue 05 Jul 2022 12:52:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45218 Tue 05 Jul 2022 08:54:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45054 0.05), with the overall population growth curve being best described as L(t) = 697.15(1-e-0.06(t-6.30)). Males matured at a slightly larger size than females, however, no significant differences were observed (LRT, p > 0.05). The length- and age- at-50% maturity was 330 mm (FL) and 5.73 years for the full population, respectively. Histological analyses showed that Oplegnathus conwayi are asynchronous spawners with a gonochoristic reproductive style. Macroscopic staging and gonadosomatic index results indicated a protracted spawning season for Oplegnathus conwayi, with a peak in spring. A survey was designed and disseminated to collect FEK on the biology and population status of Oplegnathus conwayi and human dimension information on South Africa’s spearfishery. A total of 103 survey responses were received, of which 94 were regarded as specialised (spearfishers who had greater experience, skill and avidity, and maintained spearfishing as an important component of their lifestyle) spearfishers. Based on the responses of the specialist spearfishers, the top four main species caught by spearfishers from this survey were Seriola lalandi (13.9%), Pachymetopon grande (11.7%), Oplegnathus conwayi (11.4%) and Sparodon durbanensis (11%), and the majority of respondents indicated that there had been no changes in abundance, size and catches of these species in the years that they had been spearfishing. Respondents indicated that Oplegnathus conwayi are most commonly targeted in the Eastern Cape and are found at depths of up to 40 m. Respondents also indicated that there may be a seasonal onshore (Summer/Winter) and offshore (Summer/Winter) migration with year-round spawning and a peak in November, December and January. The incorporation of spearfishers into the data collection, both through the collection of specimens and their FEK, was beneficial to this study. Besides providing samples from a broader geographical range than the primary collection area, the collaboration with spearfishers has promoted the inclusion of this group into the management system. The findings of this study also suggest that FEK data can be more reliable if the concept of recreational specialisation is incorporated into data collection. While the FEK suggested that the population was stable, a stock assessment is necessary to fully understand the population status and implement management strategies. Nevertheless, the key life history characteristics (slow growth and late maturation) observed in this study are characteristic of species that is vulnerable to overexploitation, and thus the precautionary approach should be applied. The reproductive information collected in this study has provided information for the implementation of an appropriate size limit regulation for Oplegnathus conwayi. Here, a minimum size limit of 400 mm TL, which corresponds approximately with the length-at-50% maturity of 330 mm FL, would be appropriate to allow fish to mature and spawn, and reduce the likelihood of recruitment overfishing. Reduction in the bag limit from five to two fish per person per day may also be appropriate as a precautionary measure until a stock assessment has been completed. Finally, the incorporation of stakeholder into biological collection and the use of FEK may be a useful approach for other data deficient species and in countries with limited resources for ecological research.]]> Thu 29 Sep 2022 14:29:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45201 Thu 23 Jun 2022 10:11:47 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57253 Thu 20 Oct 2022 09:50:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44956 Thu 19 May 2022 15:54:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45048 Thu 19 May 2022 12:17:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45185 Thu 17 Feb 2022 16:01:47 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57288 Thu 13 Oct 2022 11:49:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57284 Thu 13 Oct 2022 09:36:46 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45272 Thu 13 Oct 2022 08:40:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44952 Sun 14 Nov 2021 17:20:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44795 Sun 14 Nov 2021 16:44:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45017 Sun 14 Nov 2021 16:23:10 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45053 Sun 14 Nov 2021 09:37:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42772 Sun 14 Nov 2021 09:23:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45267 Mon 15 Nov 2021 15:41:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45264 Mon 15 Nov 2021 15:06:44 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45013 Mon 15 Nov 2021 15:01:57 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45262 Mon 15 Nov 2021 14:45:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45012 Mon 15 Nov 2021 11:54:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44982 Mon 15 Nov 2021 11:38:47 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45247 Mon 15 Nov 2021 11:36:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45245 Mon 15 Nov 2021 11:29:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45240 Mon 15 Nov 2021 10:55:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45238 Mon 15 Nov 2021 10:55:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45236 Mon 15 Nov 2021 10:40:48 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45235 Mon 15 Nov 2021 10:30:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45229 Mon 15 Nov 2021 10:05:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45227 Mon 15 Nov 2021 09:59:03 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45226 Mon 15 Nov 2021 09:14:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45071 500 mg/L), increased viscosity, inability to flocculate microalgal cells, a rhamnolipid content of 32%, and a higher surface-activity. Based on these results, Bacillus strain ECCN 41b was rationalized to produce anionic EPS with potential application in metal or oil recovery. In addition to EPS production, the bacteria Planococcus strain ECCN 45b and Exiguobacterium strain ECCN 46b appeared pigmented. Based on partial characterization using UV/Vis spectrophotometry, thin-layer chromatography, FTIR, and NMR, the pigments produced by these two strains appeared to be identical and were tentatively identified as ketocarotenoids. This study successfully demonstrated the importance of EPS production and formation of MaB-flocs in the MLSS from HRAOP of an IAPS treating domestic sewage. It is evident that increased settleability of the biomass does contribute to the reported efficiency of wastewater treatment by IAPS and would reduce both total suspended solids (TSS) and chemical oxygen demand (COD). In addition, demonstration that this biomass contains products of value such as carotenoids and EPS with potential for commercial use strengthens the idea of using IAPS as a platform technology for innovation of the wastewater treatment process to a biorefinery.]]> Mon 14 Feb 2022 15:19:49 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57256 Mon 10 Oct 2022 09:43:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51398 Mon 10 Oct 2022 09:31:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45022 Mon 07 Feb 2022 16:17:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45215 Mon 06 Jun 2022 16:22:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44981 Mon 06 Dec 2021 14:50:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45183 Mon 06 Dec 2021 12:51:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45179 Mon 04 Jul 2022 12:52:46 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45202 Mon 04 Jul 2022 12:24:46 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45207 Fri 18 Feb 2022 15:47:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45069 Fri 18 Feb 2022 15:33:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45193 Fri 18 Feb 2022 12:59:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45216 Fri 17 Jun 2022 15:26:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45024 Fri 14 Jul 2023 09:03:35 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45206 Fri 11 Feb 2022 14:40:07 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45145 Fri 07 Jul 2023 09:54:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45284 Fri 07 Jul 2023 06:39:10 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45064 1 relative to the native crab irrespective of region, which were higher for the summer than the winter season, suggesting greater impact of the invaders compared to the native species. This study further estimated the socioeconomic losses due to catch spoilage by C. quadricarinatus which are up to 1500 t per year in the invaded Kafue River Basin, which translates to an annual income loss of US$ 2 million. Information provided in this study is vital for conservation management and to compel policymakers to develop appropriate conservation management tools within regulatory frameworks, which could stop or minimise the spread of crayfish species and protect Africa from further losing aquatic biodiversity.]]> Fri 06 May 2022 11:07:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45184 Fri 04 Feb 2022 11:49:47 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45049 Fri 01 Jul 2022 14:30:38 SAST ]]>