https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://vital.seals.ac.za/vital/access/manager/Repository/vital:35698 Wed 12 May 2021 17:38:56 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35499 Tue 21 May 2024 07:44:38 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35777 Tue 14 May 2024 16:08:59 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35509 Tue 09 Aug 2022 15:05:37 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35910 Thu 11 Aug 2022 06:40:29 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35452 Thu 11 Aug 2022 06:39:06 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35799 Thu 11 Aug 2022 06:38:19 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35605 Thu 11 Aug 2022 06:36:08 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35823 Mon 13 May 2024 15:07:32 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35782 Mon 13 May 2024 15:06:57 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35780 Mon 13 May 2024 15:06:30 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35944 Mon 13 May 2024 15:04:17 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35697 Mon 13 May 2024 15:03:53 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35827 Mon 13 May 2024 15:03:06 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35714 Mon 13 May 2024 15:02:41 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35816 Mon 13 May 2024 15:01:57 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35815 Mon 13 May 2024 15:01:31 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35947 Mon 13 May 2024 15:00:53 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35942 Mon 13 May 2024 15:00:23 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35829 Mon 13 May 2024 14:59:57 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35818 Mon 13 May 2024 14:58:47 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35607 Mon 13 May 2024 14:58:25 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35945 Mon 13 May 2024 14:58:05 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35943 Mon 13 May 2024 14:57:43 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35937 Mon 13 May 2024 14:57:22 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35826 Mon 13 May 2024 14:56:57 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35817 Mon 13 May 2024 14:56:15 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35812 Mon 13 May 2024 14:55:53 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35691 Mon 13 May 2024 14:54:58 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35634 Mon 13 May 2024 14:54:33 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35633 Mon 13 May 2024 14:54:13 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35630 Mon 13 May 2024 14:53:49 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35618 Mon 13 May 2024 14:53:01 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35612 Mon 13 May 2024 14:52:39 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35504 50cm total length was strongly biased towards females. There was reproductive activity throughout the year, peaking slightly between autumn and spring.]]> Mon 13 May 2024 14:52:14 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35472 Mon 13 May 2024 14:51:38 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35461 150 cm TL, >30 kg; Bruton 1976), long-lived (validated to at least 15 years, Weyl & Booth 2008) and fast-growing (Bruton & Allanson 1980; Quick & Bruton 1984; Richardson et al. 2009) fish that attains sexual maturity within two years of age (de Moor & Bruton 1988). It is eurythermic (80–35°C), mesohalic (0–10 ppt) and has the ability to airbreathe. These attributes predispose it to surviving in all but the most adverse of conditions and have directly contributed to its wide use as an aquaculture species. These attributes have also contributed to its ability to invade waterbodies beyond its natural range (de Moor & Bruton 1988) and after inadvertent introductions such as by escape from aquaculture facilities or through water transfer schemes, C. gariepinus has established populations in many non-native environments. Such invasions include the Philippines (Mercene 1997), Bangladesh (Arthur & Ahmed 2002), Thailand (Vidthayanon 2005), India (Bhakta & Bandyopadhyay 2007) and Brazil (Cambray 2005; Vitule et al. 2006; Rocha & Schiavetti 2007). In South Africa, C. gariepinus invaded the temperate Great Fish River catchment after the species was translocated from the Orange River through a Interbasin Water Transfer (IBWT) scheme (Laurenson et al. 1989). Potential threats include predation of and competition with indigenous species, habitat degradation, and the spread of diseases and parasites (Dudgeon et al. 2006).]]> Mon 13 May 2024 14:51:09 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35455 Mon 13 May 2024 14:50:46 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35708 Mon 13 May 2024 14:50:23 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35600 Mon 13 May 2024 14:49:43 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35466 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.]]> Mon 13 May 2024 14:49:17 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35450 Mon 13 May 2024 14:48:58 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35711 Mon 13 May 2024 14:48:28 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35710 Mon 13 May 2024 14:47:51 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35709 Mon 13 May 2024 14:47:34 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35705 Mon 13 May 2024 14:47:06 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35703 Mon 13 May 2024 14:46:48 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35539 Mon 13 May 2024 14:46:26 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35526 Mon 13 May 2024 14:46:00 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35767 Mon 13 May 2024 14:45:25 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35596 Mon 13 May 2024 14:45:02 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35494 Mon 13 May 2024 14:44:40 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35457 Mon 13 May 2024 14:44:12 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35775 Mon 13 May 2024 14:43:44 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35774 500 larvae per net haul), peaking at ~7 500 larvae in a single haul that consisted mostly of postflexion-stage Sparidae. There was a weak, negative correlation (−0.24) between temperature and overall CPUE, which reflected either the seasonality or protracted nature of spawning by the species occurring in the bay. There was no significant difference in CPUE between the moon phases sampled on the spring tides in this study. Shark Bay was dominated by postflexionstage larvae, consisting in particular of species common to tide pools during the juvenile stage. Certain species were sampled for only short periods during the year. The year-round occurrence and high abundance of the two dominant species indicate that Shark Bay represents an important nursery habitat for the completion of the larval phase. These species exhibited exponential growth that lagged behind small increases in temperature, highlighting the importance of access to shallow, warm habitat that allows larval growth to increase, leading to earlier settlement into juvenile habitat and thereby reducing the pelagic larval duration.]]> Mon 13 May 2024 14:42:13 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35940 Fri 26 Apr 2024 12:44:02 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:35486 Fri 26 Apr 2024 12:43:21 SAST ]]>