Phosphorus-32 bioelimination by arthropod predators fed labeled eggs ofHeliothis virescens [Lep.: Noctuidae] |
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| Authors: | L G Thead H N Pitre T F Kellogg |
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| Institution: | (1) Mississippi State University, 39762 Mississippi State, Mississippi, U.S.A.;(2) Mississippi Agricultural and Forestry Experiment Station, 39762 Mississippi State, Mississippi, U.S.A.;(3) Present address: Pennwalt Corporation, 5060 Horn Lake Rd, 38637 Horn Lake, MS |
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| Abstract: | Adults ofGeocoris punctipes (Say),Tropiconabis capsiformis Germar,Nabis roseipennis Reuter andColeomegilla maculata (DeGeer) were confined inside petri dishes and fed phosphorus-32 (32p)-labeledHeliothis virescens (F.) eggs. Observations of bioelimination of32p over a 72 h period allowed derivation of equations for predicting the number ofH. virescens eggs ingested by each species. Twenty-four to 72 h after eggs were eaten, the percentages of32p eliminated ranged from ca. 14% forG. punctipes to 42 % forT. capsiformis. Cautious use of the results will aid researchers in assessing predation on32p labeledHeliothis.
Publication No 5935. Mississippi Agricultural and Forestry Experiment Station, Mississippi State, MS 39762. |
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| Keywords: | Bioelimination Coleomegilla maculata Geocoris punctipes Heliothis virescens Nabis roseipennis Tropiconabis capsiformis Phosphorus-32 Predation |
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