Effects of pesticides on songbird productivity in conjunction with pecan cultivation in southern georgia: A multiple-exposure experimental design

Autor:	Kathleen A. Patnode, Donald H. White
Rok vydání:	1991
Předmět:	Mimus polyglottos biology Reproductive success Ecology Health Toxicology and Mutagenesis media_common.quotation_subject Zoology Pesticide Toxostoma biology.organism_classification Songbird Productivity (ecology) Cardinalis cardinalis Environmental Chemistry Reproduction media_common
Zdroj:	Environmental Toxicology and Chemistry. 10:1479-1486
ISSN:	1552-8618 0730-7268
Popis:	A prototypic experimental design was used to assess sublethal effects of multiple and varied organophosphates and carbamates on reproduction in birds. The design allowed for classification of pesticide exposure according to toxicity of applied compounds and type and frequency of applications. Daily survival rates (DSRs) of nests, eggs, and nestlings were determined for northern mockingbirds (Mimus polyglottos), brown thrashers (Toxostoma rufum), and northern cardinals (Cardinalis cardinalis) nesting along edges of pecan orchards and row crops in southern Georgia. Egg and nestling DSRs for all species combined varied inversely (P 0.05) among three exposure levels. Brain cholinesterase activities were age-dependent and substantiated adult, but not nestling, exposure. Results suggest that increasing exposure to pesticides may reduce songbird productivity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d848bc3a74eef52042d278c8490fcfc4 https://doi.org/10.1002/etc.5620101113 Zobrazit plný text záznamu Plný text