Browsing RESEARCH: Terblanche, J by Title
Now showing items 43-62 of 65
-
Physiological mechanisms of dehydration tolerance contribute to the invasion potential of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) relative to its less widely distributed congeners
(Creative Commons Attribution 4.0 International Licence, 2016)Background: The Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) is a highly invasive species now with an almost cosmopolitan distribution. Two other damaging, polyphagous and closely-related ... -
Physiological performance of field-released insects
(Elsevier, 2014)Predicting insect field performance has direct value for control programmes seeking increased efficacy while simultaneously providing insights into field physiology and responses to environmental variability. Recent studies ... -
Physiological responses to fluctuating thermal and hydration regimes in the chill susceptible insect, Thaumatotibia leucotreta
(Elsevier, 2013)Fluctuating thermal regimes (FTR), consisting of cycles between stressful low and benign temperatures, are known to improve survival and fecundity in a variety of insects. By contrast, fluctuating hydration regimes (FHR) ... -
Plasticity and cross-tolerance to heterogeneous environments: divergent stress responses co-evolved in an African fruit fly
(European Society for Evolutionary Biology, 2018)Plastic adjustments of physiological tolerance to a particular stressor can result in fitness benefits for resistance that might manifest not only in that same environment but also be advantageous when faced with alternative ... -
Population dynamics of Eldana saccharina Walker (Lepidoptera: Pyralidae): application of a biophysical model to understand phenological variation in an agricultural pest.
(Cambridge University Press, 2018)Understanding pest population dynamics and seasonal phenology is a critical component of modern integrated pest-management programs. Accurate forecasting allows timely, cost-effective interventions, including maximum ... -
Population genetics of Ceratitis capitata in South Africa: Implications for dispersal and pest management
(Public Library of Science, 2013)The invasive Mediterranean fruit fly (medfly), Ceratitis capitata, is one of the major agricultural and economical pests globally. Understanding invasion risk and mitigation of medfly in agricultural landscapes requires ... -
Predicted decrease in global climate suitability masks regional complexity of invasive fruit fly species response to climate change
(Springer, 2016)Climate change affects the rate of insect invasions as well as the abundance, distribution and impacts of such invasions on a global scale. Among the principal analytical approaches to predicting and understanding future ... -
Predicting performance and survival across topographically heterogeneous landscapes: the global pest insect Helicoverpa armigera (Hübner, 1808) (Lepidoptera: Noctuidae)
(Australian Entomological Society, 2014)Species distribution models provide a means of better understanding how climate constrains the survival of organisms. Although effective in predicting the presence or absence of species across the landscape, model outputs ... -
Promises and challenges in insect-plant interactions
(The Netherlands Entomological Society, 2018)There is tremendous diversity of interactions between plants and other species. These relationships range from antagonism to mutualism. Interactions of plants with members of their ecological community can lead to a profound ... -
Respiration, thermogenesis, and thermoregulation of Victoria cruziana flowers
(Elsevier B.V., 2017)The flowers of Victoria cruziana bloom over two consecutive nights, during which time they dramatically increase their metabolic rate (MR) to raise their internal temperature by 7–10◦C above air temperature.To investigate ... -
Respiratory dynamics of discontinuous gas exchange in the tracheal system of the desert locust, Schistocerca gregaria
(Company of Biologists, 2012)Gas exchange dynamics in insects is of fundamental importance to understanding evolved variation in breathing patterns, such as discontinuous gas exchange cycles (DGCs). Most insects do not rely solely on diffusion for ... -
Sex-dependent thermal history influences cold tolerance, longevity and fecundity in false codling moth Thaumatotibia leucatreta (Lepidoptera: Tortricidae)
(The Royal Entomological Society, 2018)1 Environmental temperature plays a critical role in the field performance of mass-reared insects. For sterile insect technique programmes, the influence of larval (developmental) temperature variation on subsequent adult ... -
Sexual dimorphism and physiological correlates of horn length in a South African isopod crustacean
(The Zoological Society of London, 2016)Although isopod crustaceans frequently show sexual dimorphism in body size, sexual differences in other non-reproductive (secondary sexual) traits have been rarely studied. Furthermore, little is known about the physiological ... -
Spatial scale, topography and thermoregulatory behaviour interact when modelling species’ thermal niches
(Nordic Society Oikos, 2019)The spatial scale at which climate and species’ occupancy data are gathered, and the resolution at which ecological models are run, can strongly influence predictions of species performance and distributions. Running model ... -
The speed and metabolic cost of digesting a blood meal depends on temperature in a major disease vector
(The Company of Biologists Ltd, 2016)The energetics of processing a meal is crucial for understanding energy budgets of animals in the wild. Given that digestion and its associated costs may be dependent on environmental conditions, it is necessary to obtain ... -
A synthesis for managing invasions and pest risks simultaneously for tephritid fruit flies in South Africa
(The Netherlands Entomological Society, 2018)Developing a general management framework for monitoring and reporting biological invasions in agricultural contexts is crucial to assist in the planning and execution of intervention and control strategies. Here we make ... -
Thermal biology, population fluctuations and implications of temperature extremes for the management of two globally significant insect pests
(Elsevier, 2013)The link between environmental temperature, physiological processes and population fluctuations is a significant aspect of insect pest management. Here, we explore how thermal biology affects the population abundance of ... -
Thermal limits of wild and laboratory strains of two African malaria vector species, Anopheles arabiensis and Anopheles funestus
(BioMed Central, 2012)Background: Malaria affects large parts of the developing world and is responsible for almost 800,000 deaths annually. As climates change, concerns have arisen as to how this vector-borne disease will be impacted by changing ...