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GENETIC VARIATION IN TWO POPULATIONS OF THE ORANGE ROUGHY (HOPLOSTETHUS ATLANTIC US) FROM NAMIBIA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: N. S. Flint --- , , South Africa F. H. van der Bank --- , , South Africa P. J. Theron --- , , South Africa A. Staby --- , NamibiaThe orange roughy (Hoplostethus atlanticus) is a relatively new commercially exploited fish species, but it is currently ranked third amongst the world's top five seafood products. Gene products of 22 protein coding loci in two populations off the coast of... -
Phylogenetic relationships between Synodontis species: some preliminary results
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EE Bruwer FH van der Bank GJ Steyn M WinkThe aim of this study was to identify genetic markers and morphological characters to distinguish Synodontis species, because certain species are extremely difficult to identify due to the taxonomically unreliable nature of prominent morphological features. Fixed allele mobility differences were... -
Population genetic structure of the sidespot barb, Barbus neefi, from the north-eastern escarpment, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GD Engelbrecht --- Discipline of Physiology, South Africa P FS Mulder --- Discipline of Physiology, South Africa JS Engelbrecht --- , South AfricaAllozyme analysis was used to determine patterns of genetic variation within and between populations of Barbus neefi. The products of 29 loci were analysed, with 17 loci being monomorphic in all populations. The genetic variability estimates compared well with values... -
Is caudal fin colour in tigerfish Hydrocynus vittatus a sex or population trait?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Soekoe --- Centre for Aquatic Research, Department of Zoology, South Africa FH van der Bank --- African Centre for DNA Barcoding, Department of Zoology, South Africa NJ Smit --- Water Research Group (Ecology), Unit for Environmental Sciences and Management, Potchefstroom Campus, South AfricaTigerfish caudal fin colours vary from yellow to red, with distinct dissimilarities previously noted. To understand these colour differences, tigerfish were collected during 2008 to 2010 from four southern African populations in the Upper Zambezi River (ZAM), Okavango Delta (OKA),... -
Bayesian analysis of allozyme markers indicates a single genetic population of kingklip Genypterus capensis off South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WS Grant RW LeslieKingklip Genypterus capensis inhabit deep continental shelf and slope waters off southern Africa and are now largely harvested as a bycatch in trawl and longline fisheries for Cape hakes Merluccius spp. Regional differences in growth, vertebral count and otolith morphology... -
Evolutionary relationships of Slash Pine (Pinus elliottii) with its temperate and tropical relatives
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R C Schmidtling --- USDA Forest Service, SRS, USA V Hipkins --- USDA Forest Service, USAAllozymes in bud tissue and monoterpene contents in xylem oleoresin of slash pine (Pinus elliottii) were analyzed from populations across the natural distribution, as well as those from other species in the AUSTRALES pines. Allozyme diversity measures of slash pine... -
Increased backcrossing has reduced the usefulness of morphological and allozyme data for identifying Oreochromis niloticus, O. mossambicus (Teleostei: Cichlidae) and their hybrids in the Pafuri reach of the Luvuvhu River in the Kruger National Park, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FH van der Bank AR DeaconAlien Oreochromis niloticus, indigenous O. mossambicus and individuals that appeared hybrid-like were sampled from the Luvuvhu River, a tributary of the Limpopo, near Pafuri in the Kruger National Park. Starch gel electrophoresis of muscle tissues and the resolution of protein... -
Does Serranochromis altus (Teleostei: Cichlidae) exist in the Okavango Delta, Botswana?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FH van der Bank M Wink M Soekoe N SmitTwo possibly synonymous fish species in the Okavango Delta, Botswana, Serranochromis altus and S. angusticeps, were compared. Ecological data, morphometrics, meristics, allozymes, and genomic fingerprints — generated with six Inter-Simple Sequence Repeat (ISSR) analyses, and DNA barcoding primers — were... -
A biochemical genetic comparison of four populations of Breviceps adspersus (Anura: Microhylidae)
Item type: Journal Article • Journal: African Zoology • Authors: G.D. Engelbrecht --- Department of Physiology, South Africa P.F.S. Mulder --- Department of Physiology, South AfricaFour populations of the bushveld rain frog, Breviceps adspersus, representing three northern populations (B. adspersus adspersus), and a southern population (B. adspersus pentheri), were analysed by electrophoresis to assess the extent of genetic variation and differentiation amongst them. Eighteen protein-coding...