Demographic aspects of Chrysomya megacephala (Diptera, Calliphoridae) adults maintained under experimental conditions: reproductive rate estimates

Abstract

ABSTRACT

Influence of larval density on some biological and demographic aspects of Chrysomya megacephala (Diptera: Calliphoridae).

“…Considering the average daily egg production (ADP), the greatest values were observed on the cages of density 100 and the smallest values were observed for density 400. These results are similar to those of Carvalho and Zuben (2006) and could be explained by the fact that a greater quantity of food resources in the case of the smaller density, would result in bigger adults with greater fecundity. Concerning the mean reproduction age (T), the greatest value obtained was from the cages created from concentrations starting at 400 larvae, while the density 100 had the lowest reproduction age.…”

“…The net fecundity was 1391.90 ±595.47, 1864.13±734.08 and 2651.00± 859.89 for densities 100,200 and 400 respectively. This showed substantial differences in terms of female fecundity among larval densities (100,200 and 400) feeding on the same amount of food .The previous results disagree with Carvalho and Zuben, (2006) while density was inversely proportional to average daily egg production (ADP). The greatest values were 38.93±1.79 eggs produced in the smallest density 100 and the smallest values were 37.012± 14.02 eggs produced in the greatest density 400.…”

Rearing Chrysomya megacephala on artificial diets composed of varying concentrations of albumin

“…It was introduced into southern Brazil in the 1970s and today has been distributed widely throughout the Neotropical region (Guimarães et al, 1978;Prado and Guimarães, 1982). This fly is important because of its high natural population densities, high degrees of synanthopy and endophily, its potential to produce secondary myiasis in humans and other animals, and its use as a forensic indicator (James, 1947;Greenberg, 1971;Guimarães and Papavero, 1999;Oliveira-Costa and Mello-Patiu, 2004;Carvalho et al, 2004;Sukontason et al, 2005;Carvalho and Von Zuben, 2006). Because C. megacephala feeds and breeds easily in human and animal feces, carrion, foodstuffs, liver and fish (Laurence, 1981;Baumgartner and Greenberg, 1984;d'Almeida, 1993), it is a potential mechanical vector of viruses, bacteria and other enteropathogenic organisms (Greenberg, 1971;1973;Guimarães et al, 1979).…”

Effects on microhymenopteran progeny of different host exposure periods (Chrysomya megacephala, Calliphoridae) to the parasitoid wasp Nasonia vitripennis (Hymenoptera: Pteromalidae)

“…(Calliphoridae) pupae (Madeira and Neves, 1985). In their natural environment, the calliphorid flies use discrete and ephemeral substrates for feeding and laying their eggs or larvae and thus may be vectors of many diseases (Maldonado and Centeno, 2003;Oliveira et al, 2003;Carvalho and Von Zuben, 2006). These flies can also act as egg vectors for Dermatobia hominis (Linnaeus Jr., 1781) (Marinho et al, 2003).…”