dze symposium presentation- sandiso mnguni
TRANSCRIPT
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Chemical ecology of cryptic species of Eccritotarsus catarinensis (Carvalho) (Hemiptera: Miridae), biological control agents of water hyacinth (Eichhornia crassipes)
Student: Sandiso Mnguni (g15M0083)Supervisors: Dr ULP Heshula, Dr I Paterson & Prof J Coetzee
Invasoras.pt
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Biology and History
• Colour and size, life cycle & mode of feeding• Release sites and number of generations
• 2 populations: Brazil (native) and Peru (native; records highest elevation, genetic variability and diversity)– Interbreed for genetic variation
Invasive.org
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Background
5.2 haplotype sequence divergence
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R. Mangan Unpublished dataB= BrazilP= Peruf= femalem= male
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Project Aims and Prediction
• Interest: Bugs emit chemicals stored & synthesised in the metathoracic scent gland, comprising of simple esters that can be broken down into acids and aldehydes
• Prediction: The quantity and quality of pheromones produced by these mirids will differ significantly
Aim: To determine pheromone production of the two reproductively isolated cryptic species and established whether they played a role in the speciation of these mirids or there is a production of an anti-sex pheromone
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Y-tube olfactometer
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Gas Chromatography Mass-Spectrometry
en.wikipedia.org
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Acknowledgements