Field density estimates of Heliothis virescens (Lepidoptera: Noctuidae) from catches in sex pheromone-baited traps

Autor:	Juan D. López, M.A. Latheef, J. A. Witz
Rok vydání:	1992
Předmět:	Lepidoptera genitalia Animal science biology Heliothis virescens Insect Science Sex pheromone Noctuidae General Medicine Nocturnal Pheromone trap biology.organism_classification Agronomy and Crop Science
Zdroj:	Bulletin of Entomological Research. 82:281-286
ISSN:	1475-2670 0007-4853
DOI:	10.1017/s000748530005183x
Popis:	The number of male tobacco budworm, Heliothis virescens (Fabricius), trapped on a daily basis in pheromone traps in individual cotton fields was compared to male and female adult densities measured by nocturnal field sampling. The decline of trap efficiency with increasing female density was demonstrated. A simple relationship for estimating H. virescens male density from the numbers trapped was derived as P♂ = (E2/13)2, where P♂ is density and E2 is the two-day exponential average of number trapped. The standard error for the regression translates to an accuracy ratio of 2:1. The results compare favourably with previous research using mark-release-recapture methodology. Application of the formula is discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::289399c599a0231ec0deac85da5b2898 https://doi.org/10.1017/s000748530005183x Zobrazit plný text záznamu