Bioelimination of /sup 51/Cr and /sup 85/Sr by cockroaches, Gromphadorhina portentosa (Orthoptera: Blaberidae), as affected by mites, Gromphadorholaelaps schaeferi (parasitiformes: laelapidae)
This paper describes rates of Chromium-51 and Strontium-85 assimilation and bioelimination by the hissing cockroach, Gromphadorhina portentosa (Schaum), when the symbiotic mite, Gromphadorholaelaps schaeferi Till, was present or removed. Mite-infested cockroaches had significantly higher rates of /sup 51/Cr elimination relative to mite-free cockroaches, implying more rapid gut clearance times. We did not find a significant mite effect on /sup 85/Sr elimination by the host, but mite effects could have been masked by the apparently unique process of nutrient assimilation and elimination by G. portentosa. Conventional models of radioactive tracer bioelimination predict a rapid initial loss of tracer due to gut clearance, followed by a slower loss due to excretion of assimilated tracer. Our results indicated that assimilated /sup 85/Sr was eliminated earlier than unassimilated /sup 85/Sr was lost by defecation.
- Research Organization:
- Univ. of Georgia, Athens
- OSTI ID:
- 6579196
- Journal Information:
- Ann. Entomol. Soc. Am.; (United States), Vol. 75:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHROMIUM 51
EXCRETION
COCKROACHES
RADIONUCLIDE KINETICS
INTESTINES
STRONTIUM 85
COMPARTMENTS
DOSE-RESPONSE RELATIONSHIPS
MITES
ALKALINE EARTH ISOTOPES
ANIMALS
ARACHNIDS
ARTHROPODS
BETA DECAY RADIOISOTOPES
BODY
CHROMIUM ISOTOPES
CLEARANCE
DAYS LIVING RADIOISOTOPES
DICTYOPTERA
DIGESTIVE SYSTEM
ELECTRON CAPTURE RADIOISOTOPES
EVEN-ODD NUCLEI
GASTROINTESTINAL TRACT
HOURS LIVING RADIOISOTOPES
INSECTS
INTERMEDIATE MASS NUCLEI
INVERTEBRATES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
ORGANS
RADIOISOTOPES
STRONTIUM ISOTOPES
560162* - Radionuclide Effects
Kinetics
& Toxicology- Animals
Plants
Microorganisms
& Cells