Prevalence of a Trypanosomatid in the Southern Green Stink Bug, Nezara viridula

The southern green stink bug, Nezara viridula (L.), and certain of its host plants were examined to determine the prevalence and biological characteristics of an intestinal trypanosomatid. Promastigotes with short (≤ 17.5 μm excluding flagellum) and long forms (≥ 25.0 μm) usually infected < 50% o...

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Bibliographic Details
Published in:The Journal of eukaryotic microbiology 2000-07, Vol.47 (4), p.388-394
Main Authors: Fuxa, Jason E, Fuxa, James R, Richter, Arthur R, Weidner, Earl H
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Biological and medical sciences
Crops, Agricultural - parasitology
Demecology
Epizootiology
flagellate
Fundamental and applied biological sciences. Psychology
Glycine max - parasitology
Hemiptera - parasitology
Intestines - parasitology
Kinetoplastida
Pentatomidae
promastigotes
Protozoa. Invertebrata
Seasons
Trypanosomatina - classification
Trypanosomatina - growth & development
Trypanosomatina - isolation & purification
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Summary:The southern green stink bug, Nezara viridula (L.), and certain of its host plants were examined to determine the prevalence and biological characteristics of an intestinal trypanosomatid. Promastigotes with short (≤ 17.5 μm excluding flagellum) and long forms (≥ 25.0 μm) usually infected < 50% of the bugs before August and > 50% (maximum 95%) during August–October, but prevalence was not host-density dependent. The flagellate was detected in adults and in all nymphal instars, at all sampling sites where at least 10 bugs were captured, and in bugs from all host plants sampled (soybean, red clover, vetch). Of bugs with flagellates, 27% were heavily infected (> 20 flagellates per 160× microscope field). Weights of infected and uninfected adults did not differ. Live flagellates were detected in bug feces and in one stem of red clover. When bugs were fed soybean pods, tomatoes, or snap beans in the laboratory, only once were flagellates detected in plant tissue (snap beans). The flagellate was cultured in modified Medium 199. This flagellate is prevalent in N. viridula populations in Louisiana and apparently does not cause significant pathological effects in N. viridula or its host plants, including soybean.
ISSN:1066-5234
1550-7408
DOI:10.1111/j.1550-7408.2000.tb00065.x