The dynamics of intraguild predation in Chrysomya albiceps Wied. (Diptera: Calliphoridae): interactions between instars and species under different abundances of food

Abstract

PALAVRAS-CHAVE: Comportamento larval, mosca-varejeira, competiçãoABSTRACT -The pattern of larval interaction in blowfl ies confi ned with Chrysomya albiceps Wied. and C. rufi facies Maquart can be changed in response to the predatory behaviour of the two species to a contest-type process instead of the scramble competition that usually occurs in blowfl ies. Facultative predation is a frequent behaviour in C. albiceps and C. rufi facies that occurs as an alternative food source during the larval stage. In this study, we investigated the dynamics of intraguild predation by C. albiceps on other fl y species in order to analyse interspecifi c and intraspecifi c survival in C. albiceps, C. megacephala and C. macellaria Fabricius. The experimental design of the study allowed us to evaluate how factors such as species, density and abundance of food infl uenced the survival of the calliphorid species. When C. albiceps was confi ned with C. megacephala or C. macellaria, only adults of C. albiceps survived at different larval densities and abundance of food. In addition, the survival of C. albiceps was higher in two-species experiments when compared to single species experiments. The implications of these results for the dynamics of C. albiceps were discussed.

Interaction between Musca domestica L. and its predator Muscina stabulans (Fallén) (Diptera, Muscidae): effects of prey density and food source abundance

“…This concept was also treated by Holt & Polis (1997) while considering an IGP model that incorporates the aspects of exploitative competition (Tilman 1982) where the inferior competitor (predator) must gain sufficient from predation to offset competitive inferiority in order to co-exist. Faria et al (1999) and Rosa et al (2006), also showed that predation offered more advantages to Chrysomya albiceps (Diptera, Calliphoridae) than competition for food in limiting resources.…”

“…These aspects must be investigated in order to understand the dynamics of the interaction between the prey and the predator species, as well as the factors that trigger the switch from a competitor-type behavior to a predator-type (Rosa et al 2006). Thus, the objective of this work was to evaluate how prey availability and the amount of food resource influences the predatory behavior of M. stabulans on M. domestica larvae.…”

Temperature requirements for the growth of immature stages of blowflies species, Chrysomya albiceps and Calliphora vicina, (Diptera:Calliphoridae) under laboratory conditions

“…The reason seems to be natural. As noted in various studies, inherent biogeographically variation between population (Marchenko, 1989;Donovan et al, 2006;Szpilla, 2010a;Greenberg & Kunich, 2002) food substrate (Greenberg & Kunich, 2002;Kounouz & Kamel, 2017) humidity, population density and other intrinsic factors are considered as the reason of such differences (Faria & Godoy, 2001;Rosa et al, 2006). It seems that histolysis and histogenesis of the adult organs in immature stage were the reason of the highest thermal requirement of ADD in both 25°C and 30°C, during the pupal period, and the length of this development stage has been mentioned in most researches (Al-Shareef & Al-Qurashi, 2016;Queiroz, 1996;Bharti, 2009;Defilippo et al, 2013;Donovan et al, 2006;Richards et al, 2008;Augul, 2009;Velez & Wolff, 2008).…”

Intra-puparial development of Lucilia eximia (Diptera, Calliphoridae)

“…It is considered the most abundant species in urban and rural zones (Barros-Souza et al 2012). During its larval stage it is a facultative predator of eggs and larvae of other dipterans (Rosa et al 2006). The features mentioned above can make C. albiceps responsible for the decrease of native species such as L. eximia, due to the interspecific competitions when these species are simultaneously present in a carcass.…”