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The effect of physico-chemical parameters on speciation of trace metals insediments from inland and coastal waters of Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CA Biney --- , Burkina Faso R Asmah --- , GhanaThe speciation of cadmium, lead, copper, zinc, manganese and iron into exchangeable, carbonate, reducible and organic bound fractions was studied in sediments from coastal and freshwater environments in Ghana. This was relevant as the species in which metals are stored... -
Morphological and electrophysiological field observations on electric freshwater fish of the genus Mormyrops Müller 1843 (Teleostei: Mormyridae) from West and southern Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Kramer --- Zoological Institute of the University of Regensburg, GermanyDifferent specimens of Mormyrops anguilloides (Linnaeus 1758) were reported to display electric organ discharge (EOD) pulses of either initially head-positive or initially negative polarity, a hypothetical sex difference that has not been substantiated to date. The morphology and EODs of... -
Evidence of hybridisation within the genus Chrysoblephus and conserved nuclear sequences of South African sparids (Teleostei: Sparidae)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S von der Heyden --- Evolutionary Genomics Group, Department of Botany and Zoology, South Africa A Connell --- , South AfricaSeveral hybridisation events have been recorded in marine fish, yet there is little information for southern African species. Here we present evidence for hybridisation within the genus Chrysoblephus (Sparidae), by analysing a fish caught off KwaZulu-Natal, off the east coast... -
Water location, piospheres and a review of evolution in African ruminants
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JF Derry AJ DougillThe main radiation of large mammalian herbivores in Africa took place in the Pliocene–Pleistocene, when a long-term trend towards aridification promoted grasslands and the diversification of ruminant grazers. Traditional models of this evolution identify habitat fragmentation in response to climate... -
Host use does not clarify the evolutionary history of African ticks (Acari: Ixodoidea)
Item type: Journal Article • Journal: African Zoology • Authors: G.S. Cumming --- Department of Zoology, U.K.Where host-parasite associations are rigid and unique, the host preference(s) of parasites and the evolutionary relationships between their hosts may offer insights into the parasites’ evolu–tionary history. Where such associations are less rigid, however, the assumption that current host preferences... -
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... -
Late Pleistocene potential distribution of the North African sengi or elephant-shrew Elephantulus rozeti (Mammalia: Macroscelidea)
Item type: Journal Article • Journal: African Zoology • Authors: Árpád S. Nyári --- Natural History Museum and Biodiversity Research Center, U.S.A. Townsend A. Peterson&yg --- Natural History Museum and Biodiversity Research Center, U.S.A. Galen B. Rathbun --- Department of Ornithology and Mammalogy, California Academy of Sciences, U.S.A.The Sahara Desert was recently proposed as the agent of vicariant speciation in the North African elephant-shrew (order Macroscelidea, Elephantulus rozeti). Based on evidence from molecular dating, however, this speciation event was estimated as having occurred in the Miocene, an... -
Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LB Kramer --- Zoological Institute, Germany FH van der Bank --- African Centre for DNA Barcoding, Department of Zoology, South Africa M Wink --- Institute of Pharmacy and Molecular Biotechnology, GermanyWe critically compared Marcusenius specimens from the mouth of the Cunene River on the Namibia/Angola border, a harsh desert environment on the Atlantic Ocean coast virtually devoid of aerial insects with aquatic larvae which are an important food item, with... -
Variable phylogeographic histories of five forest birds with populations in Upper and Lower Guinea: implications for taxonomy and evolutionary conservation
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jean-Bernard Dongmo --- Laboratory of Zoology, Department of Animal Biology and Physiology, Faculty of Sciences, Cameroon Jeffrey M DaCosta --- Biology Department, Boston College, USA Champlain Djieto-Lordon --- Laboratory of Zoology, Department of Animal Biology and Physiology, Faculty of Sciences, Cameroon Pierre Ngassam --- Laboratory of Parasitology and Ecology, Cameroon Michael D Sorenson --- Department of Biology, USAThis study evaluates phylogeographic structure in selected forest bird species distributed on either side of the Dahomey Gap in West Africa to extend analyses of avian diversification across the Guineo-Congolean forest. Mitochondrial DNA sequence data were collected for five species,... -
Genetic and morphological variation of Woodland Kingfisher Halcyon senegalensis reveals cryptic mitochondrial lineages and patterns of mitochondrial–nuclear discordance
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Monica Mwale --- South African National Biodiversity Institute (SANBI), South Africa Desiré L Dalton --- South African National Biodiversity Institute (SANBI), South Africa Anna S Kropff --- South African National Biodiversity Institute (SANBI), South Africa Kim Labuschagne --- South African National Biodiversity Institute (SANBI), South Africa Isa-Rita Russo --- Cardiff University, United Kingdom Samuel T Osinubi --- University of Cape Town, South AfricaThe Woodland Kingfisher Halcyon senegalensis is widely distributed throughout sub-Saharan Africa and occupies a wide variety of woodland and savannah habitat. Thus far, three subspecies have been described based on morphological variation. In the present study, using western, eastern and... -
Mitochondrial DNA divergence in southern African bufonids: are species equivalent entities?
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Michael Cunningham --- Stellenbosch University, South Africa MichaelI. Cherry --- Stellenbosch University, South AfricaAfrican bufonids differ greatly in the extent of DNA diversity within species, and divergence among species. Here we address two aspects of DNA sequence variation. First, we explore levels of diversity at several mitochondrial and nuclear genes, and their potential... -
Phylogeography of the Clicking Stream Frog Strongylopus grayii (Anura, Pyxicephalidae) reveals cryptic divergence across climatic zones in an abundant and widespread taxon
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: KrystalA. Tolley --- South African National Biodiversity Institute, South Africa Anne Braae --- South African National Biodiversity Institute, South Africa Michael Cunningham --- University of the Free State, South AfricaThe Clicking Stream Frog (Strongylopus grayii) occurs throughout southern and eastern South Africa across summer, aseasonal and winter rainfall areas. Because of its contiguous distribution and extended breeding season this species might be expected to show a phylogeographic pattern of... -
A new species of African legless skink, genus Acontias Cuvier, 1816 “1817” (Squamata: Scincidae) from Serra da Neve inselberg, south-western Angola
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Mariana P. Marques --- Carnegie Museum of Natural History, USA Diogo Parrinha --- Universidade do Porto, Portugal Arthur Tiutenko --- Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany Manuel Lopes-Lima --- Universidade do Porto, Portugal Aaron M. Bauer --- Villanova University, USA Luis M. P. Ceríaco --- Universidade do Porto, PortugalDuring a recent survey of the Serra da Neve inselberg in south-western Angola, a population of legless skinks of the genus Acontias was found. Only three species of this genus have been recorded for the country so far – A...