Micro-PIXE studies of elemental distribution in sap-feeding insects associated with Ni hyperaccumulator, Berkheya coddii

The aim of this study was to determine elemental composition of sap-feeding insects inhabiting various parts of the Ni hyperaccumulating plant Berkheya coddii Roessl., the endemic species of ultramafic outcrops in Mpumalanga, South Africa. Three species were examined: the aphid Protaphis pseudocardu...

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Bibliographic Details
Published in:Plant and soil 2007-04, Vol.293 (1-2), p.197-207
Main Authors: Migula, P, Przybyłowicz, W. J, Mesjasz-Przybyłowicz, J, Augustyniak, M, Nakonieczny, M, Głowacka, E, Tarnawska, M
Format: Article
Language:English
Subjects:
Abdomen
Adult insects
Aphididae
Assassinations
Atomic absorption spectroscopy
Backscattering
Berkheya
Berkheya coddii
Bioaccumulation
Body regions
Calcium
Chemical composition
Chrysolina
Cixiidae
Copper
Distribution patterns
Elemental mapping
Emission analysis
Emission measurements
Endemic plants
Endemic species
Feeding
Formicidae
Geographical distribution
Head
Hyperaccumulators
Insect anatomy
Insect larvae
Insects
Iron
Metal concentrations
Metals
Ni-hyperaccumulator
Nickel
Nuclear microprobe
Organs
Ortheziidae
Outcrops
Predatory insects
Sap-feeding insects
Serpentine soils
Shoots
Soil ecology
Soil insects
Spectral analysis
Spectrometry
trace elements
Trophic levels
X-ray microanalysis
Zinc
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Summary:The aim of this study was to determine elemental composition of sap-feeding insects inhabiting various parts of the Ni hyperaccumulating plant Berkheya coddii Roessl., the endemic species of ultramafic outcrops in Mpumalanga, South Africa. Three species were examined: the aphid Protaphis pseudocardui (Aphididae), abundant on young leaves; the mealybug Orthesia sp. (Ortheziidae) colonizing underground parts of this plant, and the bug Norialsus berkheyae (Cixiidae) living on young shoots. Maps of Ni, K, Ca, Zn, and Fe for selected body areas of these species were generated using Dynamic Analysis method on the basis of particle-induced X-ray emission (micro-PIXE) and proton backscattering (BS) measurements. Atomic absorption spectrometry was used to determine Ni, Zn, Cu, Fe contents in the B. coddii organs, in some sap-feeding insect species including these mentioned above, and in the assassin bug hunting on Chrysolina pardalina, a monophagous beetle of B. coddii. Bioaccumulation factor for Ni in the examined species was below 0.05, and much higher for other metals (Zn >= 2; Fe
ISSN:0032-079X
1573-5036
DOI:10.1007/s11104-007-9231-7