Search
Now showing items 41-50 of 105
The influence of feeding on Apis mellifera scutellata queen rearing and brood production
(University of the Free State, 2002-11)
English: After vast numbers of Apis mellifera scufellafa colonies had to be
destroyed as a result of Apis mellifera capensis infestations, the so-called
Capensis problem, it became clear that there was a great need for ...
An integrated approach to pest management in field pea, Pisum sativum (L.), with emphasis on pea aphid, Acyrthosiphon pisum (Harris)
(University of the Free State, 2002-03)
This study comprises investigations into pea aphid, Acyrthosiphon pisurn, and ascochyta
blight damage on field pea, the evaluation of plant resistance levels in both breeding lines
and cultivars, the identification of ...
Foraging behaviour and sensory ecology of the bat-eared fox (Otocyon megalotis)
(University of the Free State, 2016-12)
In the wild, foraging animals face challenges that affect foraging success, including conditions
which influence the usefulness of the sensory input they receive from their environment.
Nocturnal foragers must cope with ...
Snail borne larval trematodes of the Okavango Delta, Botswana
(University of the Free State, 2001-01)
English: The Okavango Delta, situated in northwestern Botswana is one of the worlds largest inland
delta systems formed by the Okavango River, flowing in a southeasterly direction from
Angola. The snail fauna comprises ...
Molecular detection, genetic diversity and phylogenetic analysis of anaplasma marginale infecting cattle in South Africa
(University of the Free State, 2015-12)
Bovine anaplasmosis caused by Anaplasma marginale is endemic in South Africa. This
endemicity is due to presence of tick vectors that transmit A. marginale the causal agent
of the disease and the high seroprevalence in ...
Aspects of the morphology and life history of Oculotrema hippopotami (Polystomatidae: Monogenea)
(University of the Free State, 1999-01)
Being the only monogenean known from a warm-blooded animal and from a mammal
Oculotrema hippopotami Stunkard (1924) took a major leap in monogenean evolution.
After its description in 1924 various researchers rejected ...
Studies on stalk borers of maize and sorghum in Lesotho
(University of the Free State, 1998-11)
English: Investigations on various aspects of stalk borers of maize and sorghum were conducted in
Lesotho during the 1995/96, 1996/97 and 1997/98 growing seasons. Aspects investigated
were their distribution and relative ...
Parasite induced behavioural changes in fish
(University of the Free State, 2011-05)
English: Numerous studies have been conducted on the hypothesis of parasites influencing the
behaviour of their hosts. Many authors have been bias in trying to prove that this is a
form of manipulation and that parasites ...
Reproductive processes of scyphidiid peritrichs associated with limpet and haliotid hosts along the coast of South Africa
(University of the Free State, 2002-11)
English: During the early 19th century a lot of progress was made in clarifying reproduction
patterns and cycles in the kingdom Protozoa Goldfuss, 1818. During the first half of
the 20th century various scientists studied ...
Mating behaviour and competitiveness of male Glossina brevipalpis and Glossina austeni in relation to biological and operational attributes for use in the Sterile Insect Technique
(University of the Free State, 2016)
English: In South Africa, African Animal Trypanosomosis (AAT), caused by Trypanosomae parasites transmitted by Glossina brevipalpis and Glossina austeni (Diptera: Glossinidae), is restricted to the north east of KwaZulu-Natal ...