Mark-Recapture Analysis of a Population of Queensland Fruit-Fly, Dacus tryoni (Frogg.) in an Orchard

Publisher Website
Google Scholar
Abstract
SurvivaFrates and total numbers were estimated by means of a constant survival factor model, and based upon ten daily samples followed by four weekly samples. The population number increased from about 8,000 to about 70,000 adults during this time in the 21-acre orchard. A formula was derived which will determine the sample size necessary to achieve a desired precision in the estimates. There was evidence that newly emerged flies had low survival rates. Thus, some of the estimates may be positively biased. Adult flies were non-randomly distributed in the orchard, their presence being correlated with the presence of ripe fruit on the trees.

This publication has 5 references indexed in Scilit: