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Fish community of a small, temperate, urban river in South Africa
(African Journal Online, 2015)
Freshwater and marine-spawned fishes were sampled from the Baakens River, a small urban river that runs through the city of Port Elizabeth in the Eastern Cape of South Africa. Using fyke nets, 8 sites were sampled along ...
Effect of rotenone on gill-respiring and plastron-respiring insects
(NISC (Pty) Ltd and Taylor & Francis, 2015)
Rotenone, a commonly-used piscicide, interferes with the cellular respiration of aquatic vertebrates and invertebrates by preventing the uptake of oxygen. While dose-response relationships have been developed
for fish, ...
Dispersal and population-level mortality of Micropterus salmoides associated with catch and release tournament angling in a South African reservoir
(Elsevier, 2015)
This study assessed the impact of catch and release tournament angling on a largemouth bass (Micropterussalmoides) population in Wriggleswade Dam, a 1000 ha reservoir in South Africa. Effort was estimated at 648 boat ...
Population dynamics and biology of an invasive population of mosquitofish Gambusia affinis in a temperate estuarine lake system
(Zoological Society of Southern Africa, 2015)
This study investigates the distribution, relative abundance, population growth and biology of the alien invasive fish Gambusia affinis in the Wilderness Lakes System, a coastal lake system in the warm-temperate region of ...
The invasibility of small headwater streams by an emerging invader, Clarias gariepinus
(Springer, 2015)
African sharptooth catfish Clarias gariepinus
has been spread globally and is proven to be
invasive with demonstrable impacts on a variety of biota in recipient ecosystems. There are concerns that this species will invade ...
Habitat simplification increases the impact of a freshwater invasive fish
(Springer, 2015)
Biodiversity continues to decline at a range of spatial scales and there is an urgent requirement to understand how multiple drivers interact in causing such declines. Further, we require methodologies that can facilitate ...
Species-specific impact of introduced largemouth bass Micropterus salmoides in the Groot Marico Freshwater Ecosystem Priority Area, South Africa.
(NISC/ Taylor & Francis, 2015)
Largemouth bass Micropterus salmoides are among the world’s 100 worst invaders and negatively affect aquatic biodiversity in many regions worldwide. In South Africa there is a paucity of empirical studies describing their ...
Movement behaviour of largemouth bass Micropterus salmoides in a South African impoundment
(NISC(Pty) Ltd and Taylor & Francis, 2015)
The objectives of this study were to describe movements and area use patterns of largemouth bass Micropterus salmoides in relation to abiotic factors (water temperature, river inflow and water level). The study was conducted ...
Resilience of imperilled headwater stream fish to an unpredictable high-magnitude flood
(AOSIS (Pty) Ltd., 2015-05-22)
Headwater stream fish communities are increasingly becoming isolated in headwater refugia that are often cut off from other metapopulations within a river network as a result of non-native fish invasions, pollution, water ...
Introduction, establishment and spread of the Southern mouthbrooder Pseudocrenilabrus philander in the Baakens River, Eastern Cape, South Africa: short communication.
(Southern African Wildlife Management Association, 2015)
This paper provides evidence for the extralimital establishment and spread of Pseudocrenilabrus philander in the Baakens River, Eastern Cape, South Africa. Since the first occurrence record at a single locality in 1994 ...