Feeding Effects Of Ischnodemus Variegatus (Hemiptera: Blissidae) On Photosynthesis And Growth Of Hymenachne Amplexicaulis (Poaceae)

The influence of Ischnodemus variegatus feeding on photosynthesis and growth of the invasive semi-aquatic grass, Hymenachne amplexicaulis, was investigated in field and greenhouse environments. In the field, carbon dioxide assimilation of infested plants was approximately 35% less than that of non-i...

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Bibliographic Details
Published in:The Florida entomologist 2004-09, Vol.87 (3), p.312-316
Main Authors: Overholt, WA, Ewe, SML, Diaz, R, Morgan, E C, Moeri, O E
Format: Article
Language:English
Subjects:
Blissidae
Hemiptera
Hymenachne amplexicaulis
Ischnodemus
Ischnodemus variegatus
Poaceae
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Summary:The influence of Ischnodemus variegatus feeding on photosynthesis and growth of the invasive semi-aquatic grass, Hymenachne amplexicaulis, was investigated in field and greenhouse environments. In the field, carbon dioxide assimilation of infested plants was approximately 35% less than that of non-infested plants, and the rate of assimilation was related to I. variegatus density. The relative growth rate of infested plants in the greenhouse was 77% of that of non-infested plants, and biomass of infested plants was significantly less than for non-infested plants 79 days after infestation. The value of I. variegatus as a fortuitous biological control agent of H. amplexicaulis is discussed.
ISSN:0015-4040
DOI:10.1043/0015-4040(2004)087<0312:FEOIVH>2.0.CO;2