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Movement patterns of coastal bottlenose dolphins in the presence of a fast-flowing, prevailing current: shore-based observations at Cape Vidal, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Photopoulou --- Sea Mammal Research Unit, UK PB Best --- , South Africa PS Hammond --- Sea Mammal Research Unit, UK KP Findlay --- Department of Oceanography, University of Cape Town, South AfricaThe presence and movement of Indo-Pacific bottlenose dolphins Tursiops aduncus were investigated using shore-based observations made during a humpback whale Megaptera novaeangliae migration survey at Cape Vidal, South Africa, undertaken between June and October 1988–1991. Occurrence was analysed as counts... -
Breeding strategies for forest trees: Concepts and challenges
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: T White --- School of Forest Resources and Conservation, U.S.A.This paper describes some recent developments that affect the way forest geneticists think about breeding strategies for forest trees. The topics are grouped into several categories: (1) General Concepts; (2) Breeding Population Size; (3) Breeding Population Structure; (4) Management of... -
Reproductive system and the spermatophoric reaction of the mesopelagic squid Octopoteuthis sicula (Rüppell 1844) (Cephalopoda: Octopoteuthidae) from southern African waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: HJT Hoving MR Lipiński JJ VidelerReproductive features of the poorly known oceanic squid Octopoteuthis sicula are described and quantified to gain insight into the reproductive biology of the species. The data are based on 39 complete and partial specimens from southern African waters, collected between... -
Reproductive biology of Corymbia citriodora subsp. variegata and effective pollination across its native range in Queensland, Australia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: CFE Bacles J Brooks DJ Lee PM Schenk AJ Lowe A KremerThe spotted gum species complex represents a group of four eucalypt hardwood taxa that have a native range that spans the east coast of Australia, with a morphological cline from Victoria to northern Queensland. Of this group, Corymbia citriodora subsp... -
Male aggression and mating opportunity in a poeciliid fish
Item type: Journal Article • Journal: African Zoology • Authors: Kit Magellan --- Department of Ichthyology and Fisheries Science, U.S.A Horst Kaiser --- Department of Ichthyology and Fisheries Science, U.S.AOne function of aggression in animals is to gain access to mates. Aggression may therefore be favoured by sexual selection, the strength of which can be assessed using repeatability of aggressive behaviour. Here, we tested the hypotheses that male swordtails,... -
Acoustic communication and reproductive behaviour in the aquatic frog Xenopus laevis (Pipidae), a field study
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Achim Ringeis --- , , Germany Birgit Krumscheid --- , , Germany Phillip J. Bishop --- , , New Zealand Christian de Vries --- , , Germany Andreas Elepfandt --- , , GermanyWe studied the acoustic and reproductive behaviour of the clawed frog, Xenopus laevis, in a pond with clear water in South Africa over a period of two months. It contained 21 adult males and females. Each was marked with a... -
Coalition formation, mate selection and pairing behaviour of the Crested Francolin
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Johann H van Niekerk --- Department of Environmental Sciences, South AfricaTransect field observations were conducted on the behaviour of Crested Francolin Dendroperdix sephaena to describe male coalitions in the Borakalalo National Park, North West province, South Africa during May, August, October and December 2008, and again in July 2009. Crested... -
Assessing multiple mating and reproductive skew in three species of clinid fishes (Blenniiformes: Clinidae: Clinini), in reference to multiple mating in viviparous teleosts
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Scheepers --- Department of Ichthyology and Fisheries Science, South Africa G Gouws --- National Research Foundation–South African Institute for Aquatic Biodiversity (NRF–SAIAB), South AfricaThis study investigated multiple mating in three species of intertidal klipfishes (family Clinidae): super klipfish Clinus superciliosus, bluntnose klipfish Clinus cottoides, and nosestripe klipfish Muraenoclinus dorsalis. These species display the rare reproductive mode of female vivipary with superfetation, a phenomenon... -
Behavioural analysis of Village Weavers Ploceus cucullatus in an Ethiopian breeding colony during early incubation: 2. Males
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Khaleda Khan --- Department of Biology, Queens College, USA Bobby Habig --- Department of Biology, Queens College, USA David C Lahti --- Department of Biology, Queens College, USAWe observed a colony of Village Weavers Ploceus cucullatus in Ethiopia at the height of the breeding season to assess variation and relationships amongst male behaviours. Individuals spent most of their time on behaviours functioning in acquiring and retaining mates,... -
Breeding ecology of the Cream-coloured Courser in Cape Verde
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Romy Rice --- Department of Evolutionary Zoology and Human Biology, Hungary José O Valdebenito --- Milner Centre for Evolution, United Kingdom Meinolf Ottensmann --- Department of Animal Behaviour, Germany Noémie Engel --- Department of Evolutionary Zoology and Human Biology, Hungary Andreia Adrião --- Maio Biodiversity Foundation, Republic of Cape Verde Tamás Székely --- Department of Evolutionary Zoology and Human Biology, HungaryThe Cream-coloured Courser Cursorius cursor exsul is a data-deficient shorebird distributed across Eurasia and Africa. The subspecies exsul is endemic to the Cape Verde archipelago. In contrast with their mainland breeding sites, where coursers appear to be nomadic and rare... -
Life-history trade-offs among four sympatric seabreams
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CG Attwood --- , South Africa HAM Ensair --- , South AfricaFish life history is shaped by environmental and ecological circumstances but constrained by phylogeny. Life-history trade-offs can be exposed in a comparison of closely related species with similar niches. We compare the life histories of four closely related and similar-sized,... -
Honeybush (Cyclopia spp.) anther-stigma distance and intraspecies cross compatibilities
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jenifer Koen --- , South Africa Martha M. Slabbert --- , South Africa Mardé Booyse --- , South Africa Cecilia Bester --- , South AfricaSpecies of Cyclopia are used to produce honeybush tea, a uniquely South African beverage that is rapidly growing in popularity locally and abroad. In response to warnings about ecological sustainability, the honeybush industry is transitioning from a wild-harvested source model... -
Combining ability of bread wheat genotypes for yield and yield-related traits under drought-stressed and non-stressed conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Yared Semahegn --- , South Africa Hussein Shimelis --- , South Africa Mark Laing --- , South Africa Isack Mathew --- , South AfricaDrought is a major cause of reduced yields in dryland wheat production. This study aimed to determine the combining ability effects of selected bread wheat genotypes (Triticum aestivum L.) for yield and yield-related traits. Eight parental lines were selected and... -
Long-term field study of the behaviour of Xenopus laevis (Pipidae) in a small dam
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Andreas Elepfandt --- Humboldt-Universität zu Berlin, Inst. Biologie, Germany Alexander Gutsche --- Humboldt-Universität zu Berlin, Inst. Biologie, Germany Werner J Fischer --- Universität Konstanz, Fak. Biologie, Germany Wera Leujak --- Humboldt-Universität zu Berlin, Inst. Biologie, Germany Phillip J Bishop --- University of the Witwatersrand, South AfricaA study of the behaviour of Xenopus laevis in a small dam in South Africa was continued annually from 1992 until 1999. All individuals were tagged. The annual number of frogs varied between 22 and 109 by migration. The sex... -
‘Checkmating HIV&AIDS’: Using chess to break the silence in the classroom
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Omar Esau [d110e14]In this article, I give an account of my ‘Checkmating HIV&AIDS’ action research project, which was an attempt to break the ‘culture of silence’ concerning HIV&AIDS and sex and sexuality in my classroom. In this project, I focused specifically on... -
Consistency of calling performance in male Hyperolius marmoratus marmoratus: implications for male mating success
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Sharon Docherty --- University of the Witwatersrand, South Africa PhillipJ. Bishop --- University of Otago, New Zealand NevilleI. Passmore --- University of the Witwatersrand, South AfricaThe calling behaviour of male Hyperolius marmoratus marmoratus was monitored continuously over a 21 day period in the laboratory. These data were then compared to the results of a study of calling behaviour and mating success in a natural population... -
Multiple paternity and sperm storage in the Cape Dwarf Chameleon (Bradypodion pumilum)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Krystal A. Tolley --- , , South Africa Lucas F. Chauke --- , , South Africa Jennifer C. Jackson --- , , South Africa Kevin A. Feldheim --- , , USAAlthough multiple paternity and sperm storage are common in squamates, neither has been conclusively demonstrated in the chameleons (Chamaeleonidae). To examine whether these traits are present in chameleons, the Cape Dwarf Chameleon (Bradypodion pumilum) was investigated. This viviparous species inhabits... -
‘Flash Mobula’: first observations of courtship behaviour of the shortfin devil ray Mobula kuhlii
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Carpenter --- University of Cape Town, South Africa C Griffiths --- University of Cape Town, South AfricaFirst-time observations of courtship behaviour of the Endangered shortfin devil ray Mobula kuhlii are described from the Aliwal Shoal Marine Protected Area (MPA), KwaZulu-Natal, South Africa. Three events of M. kuhlii courtship, called ‘mating trains’, were recorded on video during...
