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" Field trial of a CPT-avicide aerial spray "
Heisterberg, Jon F.; Cummings, John L.; Linz, George M.; Knittle, C. Edward; Seamans, Thomas W.; Woronecki, Paul P.
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AL
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| Record Number
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942949
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LA4qg441d0
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| Language of Document
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English
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| Main Entry
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Heisterberg, Jon F.; Cummings, John L.; Linz, George M.; Knittle, C. Edward; Seamans, Thomas W.; Woronecki, Paul P.
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| Title & Author
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Field trial of a CPT-avicide aerial spray [Article]\ Heisterberg, Jon F.; Cummings, John L.; Linz, George M.; Knittle, C. Edward; Seamans, Thomas W.; Woronecki, Paul P.
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| Title of Periodical
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Proceedings of the Vertebrate Pest Conference
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14
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| Date
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1990
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| Abstract
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A 2.2-ha cedar and mixed deciduous tree woodlot in Crawford, Mississippi, harboring 330,000 blackbirds (Icterinae) and European starlings (Sturnus vulgaris) was aerially sprayed by helicopter the night of 1 March 1989 with 1050 I. of a CPT-avicide formulation at a rate of 49 kg CPT/ha. Most mortality occurred within 36 h of treatment. Mortality in the roost was 3% of the pretreatment population. No reliable technique to estimate out-of-roost mortality was identified. Pilot misapplication and probable CPT volatilization of the spray formulation contributed to the low mortality. Only 1 of 37 radiotagged blackbirds using the roost the night of the spray was verified as a CPT-related mortality. Pre- and post-treatment numbers of hawks and owls in and near the roost did not differ (P > 0.05). Dead nontarget animals found in and near the roost included 10 cardinals (Richmondena cardinalis), 1 robin (Turdus migratorius), and 1 least shrew (Cryptotis parva). Additional research is needed to develop methodologies for evaluating the efficacy of slow-acting toxicants.
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