http://vital.seals.ac.za:8080/vital/access/manager/Index ${session.getAttribute("locale")} 5 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1028 Wed 23 Jun 2021 09:01:39 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3345 Wed 12 May 2021 20:23:04 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5620 Wed 12 May 2021 19:45:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3125 Wed 12 May 2021 19:12:22 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3613 Wed 12 May 2021 19:00:59 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5213 Wed 12 May 2021 18:02:37 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5006 Wed 12 May 2021 17:32:41 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1035 Wed 12 May 2021 16:39:49 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3818 Thu 13 May 2021 08:08:29 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3611 Thu 13 May 2021 07:11:10 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1037 Thu 13 May 2021 06:28:51 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1228 Thu 13 May 2021 05:06:07 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2594 Thu 13 May 2021 04:49:23 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5210 300 mm). Fish prey include Sardinops ocellata, Engraulis capensis, Pomadasys olivaceum and A. hololepidotus. Loligo reynaudi is the dominant cephalopod prey. Selectivity of A. hololepidotus was investigated. Prey were compared to catches made during a small-mesh trawl survey. The absence of certain species from the diet suggests that they avoid predation, possibly by outswimming A. hololepidotus (e.g. P. saltatrix) while large Galeichthys feliceps are rare in the diet, probably because of their formidable spines. Flatfishes, P. olivaceum, juvenile G. feliceps and small A. hololepidotus appear to be preferred food items. The depth distribution of predators and prey is described, and it appears that the distribution of predators may be influenced by their prey. Top predatory teleosts inhabiting coastal reefs are Cheimerius nufar, Petrus rupestris, Polysteganus praeorbitalis and Epinephelus guaza. Diet changes with size and locality but comprises small reef fishes for most of the sparids. C. nufar takes pelagic fish and squid more than the other predators while P. rupestris and P. praeorbitalis prey on cheilodactylids, clinids and other reef associated prey predominantly. E. guaza takes principally crabs and octopods. Classification and ordination analyses of the prey taken illustrated the inter-relationships of predators, which change with increasing size. The pelagic predators are most similar to each other and A. hololepidotus is closer to this group than to reef predators. The reef predators are less similar to each other, although this group as a whole is segregated from pelagic predators. Exceptions to this are large C. nufar and large P. praeorbitalis, which fall into the pelagic predator group, as they took pelagic prey to a large extent. These results are discussed and the patterns shown are compared to other studies and current resource partitioning theory. Two food webs are provided for the coastal waters of the eastern Cape. The pelagic food web has clupeids, engraulids and L. reynaudi as principal components. The reef system is more complex and the Clinidae, Cheilodactylidae and Octopus spp. are important. The use of food webs in management and in providing a framework for testing theoretical models is shown to be important. Research needs are identified and include more detailed work on the basic biology and ecology of the top predators and their prey.]]> Thu 13 May 2021 04:37:57 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5743 Thu 13 May 2021 03:50:49 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5446 Thu 13 May 2021 03:33:12 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1030 Thu 13 May 2021 02:38:47 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:722 Thu 13 May 2021 01:28:28 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2670 Thu 13 May 2021 00:33:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2369 Thu 13 May 2021 00:27:57 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5629 Thu 13 May 2021 00:24:29 SAST ]]>