Mark-recapture estimates of recruitment, survivorship and population growth rate for the screwworm fly, Cochliomyia hominivorax.
Authors:
MATLOCK, R.B. Jr. SKODA, S.R. USDA, ARS
Source:
Medical and veterinary entomology. 2009 June, v. 23, no. s1 Oxford, UK : Blackwell Publishing Ltd, p. 111-125.
NALT Subjects:
Cochliomyia hominivorax population dynamics mortality population growth estimation mark-recapture studies mathematical models dry forests seasonal variation wet season dry season gender differences literature reviews Costa Rica
Other Subjects:
wet forests population recruitment
Issue Date:
Jun-2009
Abstract:
Pradel model mark-release-recapture estimates of survivorship, φ, recruitment, f, and the rate of density-independent population growth, λ, are presented for eight mark-recapture studies of the screwworm Cochliomyia hominivorax (Coquerel) (Diptera: Calliphoridae) from Costa Rica, totalling 19 573 released and 4476 recaptured flies. Corroborative estimates of survivorship and the rate of population growth based on an extensive review of the literature are also reported. Weighted-mean ± standard error of the mean (SEM) mark-release-recapture estimates of survivorship, recruitment and the rate of population growth were φ = 0.798 ± 0.008, f = 0.193 ± 0.008 and λ = 1.005 ± 0.002, respectively. Population doubling time was estimated from λ at 139 days. Estimates of φ and λ from the literature both exceeded those calculated by mark-recapture methods and estimates of population doubling times were consequently shorter.
