Výsledky vyhľadávania - "Kerwath, S"

Observer bias and detection probability in underwater visual census of fish assemblages measured with independent double-observers Autor Bernard, A.T.F., Götz, A., Kerwath, S.E., Wilke, C.G.

“…Underwater visual census (UVC) is one of the more frequently used methods for monitoring of subtidal fish communities. However, population estimates from UVC…”
Získať plný text

Identification of naturally occurring hybrids between two overexploited sciaenid species along the South African coast Autor Mirimin, L., Kerwath, S.E., Macey, B.M., Bester-van der Merwe, A.E., Lamberth, S.J., Bloomer, P., Roodt-Wilding, R.

“…[Display omitted] •We used nuclear and mtDNA data to study two wild South African sciaenid species.•Species misidentification rate of 2.8% and natural…”
Získať plný text

The age and growth of hottentot seabream Pachymetopon blochii before and after the South African linefish state of emergency in 2000 Autor Farthing, MW, Winkler, AC, Anderson, K, Kerwath, S, Wilke, C, Potts, WM

“…The hottentot seabream Pachymetopon blochii is a small-sized (maximum 2.67 kg) sparid endemic to southern Africa. It is an important target in South Africa's…”
Získať plný text

The effects of barotrauma on five species of South African line-caught fish Autor Kerwath, SE, Wilke, CG, Götz, A

“…Management measures for South African line-caught fish include output controls such as closed seasons, bag and size limits and no-take moratoria. The main…”
Získať plný text

Quantifying the degree of protection afforded by a no-take marine reserve on an exploited shark Autor da Silva, C, Kerwath, SE, Attwood, CG, Thorstad, EB, Cowley, PD, Økland, F, Wilke, CG, Næsje, TF

“…Sharks have been shown to benefit from the protection of marine protected areas (MPAs). There is, however, little information on the degree of protection by…”
Získať plný text

Are South African linefishes recovering and what makes them prone to overexploitation? Autor Haupt, M, Winker, H, Parker, D, Kerwath, SE

“…Managing coastal fisheries is challenging as the status of many fish stocks caught in these fisheries remains unknown. In the South African linefishery,…”
Získať plný text

Life history, distribution and seasonal movements of a threatened South African endemic seabream, Chrysoblephus gibbiceps Autor Attwood, CG, Dawson, ME, Kerwath, SE, Wilke, C

“…The red stumpnose Chrysoblephus gibbiceps (Sparidae) is a South African endemic seabream that has been severely depleted by fishing. A total of 678 C…”
Získať plný text

Estuarine habitat use by juvenile dusky kob Argyrosomus japonicus (Sciaenidae), with implications for management Autor Cowley, PD, Kerwath, SE, Childs, A-R, Thorstad, EB, Økland, F, Næsje, TF

“…The spatial and temporal area-use patterns of estuarine-dependent juvenile dusky kob Argyrosomus japonicus in the Great Fish Estuary, South Africa, were…”
Získať plný text

current status and management of South Africa's chondrichthyan fisheries Autor da Silva, C, Booth, AJ, Dudley, SFJ, Kerwath, SE, Lamberth, SJ, Leslie, RW, McCord, ME, Sauer, WHH, Zweig, T

“…Chondrichthyans (sharks, skates, rays and chimaeras) are captured in many marine fisheries. Management and research efforts directed at chondrichthyan fishing…”
Získať plný text

Age, growth and per-recruit stock assessment of southern mullet Chelon richardsonii in Saldanha Bay and Langebaan Lagoon, South Africa Autor Horton, M, Parker, D, Winker, H, Lamberth, SJ, Hutchings, K, Kerwath, SE

“…The southern mullet Chelon richardsonii (Mugilidae) is the main target species of the inshore net fishery (gillnet and beach-seine) on the west coast of South…”
Získať plný text

Residency and migratory behaviour by adult Pomatomus saltatrix in a South African coastal embayment Autor Hedger, R.D., Næsje, T.F., Cowley, P.D., Thorstad, E.B., Attwood, C., Økland, F., Wilke, C.G., Kerwath, S.

“…Acoustic telemetry was used to study patterns of habitat use and movements of Pomatomus saltatrix L. (common name elf/shad/bluefish/tailor) within the Saldanha…”
Získať plný text

Community ecology of the metazoan parasites of snoek Thyrsites atun (Euphrasen, 1791) (Perciformes: Gempylidae) off South Africa Autor Nunkoo, MAI, Reed, CC, Kerwath, SE

“…The parasite assemblage of snoek Thyrsites atun, a commercially important fish in the Benguela system, was examined over a one-year period. In all, 16 parasite…”
Získať plný text

First documented southern transatlantic migration of a blue shark Prionace glauca tagged off South Africa Autor da Silva, C, Kerwath, S E, Wilke, C G, Meÿer, M, Lamberth, S J

“…The first documented recapture of a South African-tagged juvenile blue shark Prionace glauca off Uruguay lends weight to the hypothesis of a single blue shark…”
Získať plný text

Analysis of bycatch in the South African midwater trawl fishery for horse mackerel Trachurus capensis based on observer data Autor Reed, JR, Kerwath, SE, Attwood, CG

“…The South African midwater trawl fishery targets adult horse mackerel Trachurus capensis. The bulk of the catch is taken by a single freezer-trawler, the…”
Získať plný text

High genetic diversity and limited spatial structure in an endangered, endemic South African sparid, the red steenbras Petrus rupestris Autor Gouws, G, Kerwath, SE, Potts, WM, James, NC, Vine, NG, Cowley, PD

“…The red steenbras Petrus rupestris is endemic to South Africa, occurring from False Bay in the Western Cape Province to St Lucia in the province of…”
Získať plný text

Dark times for dageraad Chrysoblephus cristiceps: evidence for stock collapse Autor Parker, D, Winker, H, Attwood, CG, Kerwath, SE

“…The declaration of a state of emergency in the South African linefishery in 2000 has had a positive impact on a few overexploited endemic seabreams (Family…”
Získať plný text

Phylogeography of the pelagic fish Seriola lalandi at different scales: confirmation of inter-ocean population structure and evaluation of southern African genetic diversity Autor Swart, BL, Bester-van der Merwe, AE, Kerwath, SE, Roodt-Wilding, R

“…The study investigated the global and regional phylogeography of the yellowtail kingfish Seriola lalandi by examining genetic diversity and population genetic…”
Získať plný text

Effects of fishing on a temperate reef community in South Africa 1: ichthyofauna Autor Götz, A, Kerwath, S E, Attwood, C G, Sauer, W HH

“…Exploitation of temperate reef fish not only affects the target species but potentially changes the composition of reef fish assemblages. This study…”
Získať plný text

Effects of fishing on a temperate reef community in South Africa 2: benthic invertebrates and algae Autor Götz, A, Kerwath, S E, Attwood, C G, Sauer, W HH

“…The effect of fishing on benthic reef communities was studied by comparing reefs within and outside the Goukamma Marine Protected Area (MPA) on the South…”
Získať plný text

Life-history parameters of white stumpnose Rhabdosargus globiceps (Pisces: Sparidae) in Saldanha Bay, South Africa, with evidence of stock separation Autor Attwood, C G, Næsje, T F, Fairhurst, L, Kerwath, S E

“…White stumpnose Rhabdosargus globiceps were sampled over 24 months in Saldanha Bay on the west coast of South Africa. The species is a rudimentary…”
Získať plný text