<b>Functional and numerical responses and reproduction of <i>Campoletis flavicincta</i> parasitizing <i>Spodoptera frugiperda</i> caterpillars</b> - doi: 10.4025/actasciagron.v35i4.15871

Abstract

ABSTRACT. The functional and numerical responses, reproductive characteristics, and viability of Campoletis flavicincta (Hymenoptera: Ichneumonidae) as well as the mortality after parasitism of the host Spodoptera frugiperda (Lepidoptera: Noctuidae) were analyzed in the laboratory. Campoletis flavicincta pairs were maintained until female death with 10, 20, 30, 40, or 50 caterpillars day . The functional response for each of the first five days of the host was a type III. The longevity at the five host densities and the parasitism rate showed a significant linear decrease with the host density. The offspring production showed an increasing quadratic variation with increased host density. The production of females by C. flavicincta, the offspring sex ratio, the viability of the parasitoid pupae and the percentage of mortality of S. frugiperda caterpillars were not affected by host density. The functional and numerical responses of C. flavicincta indicate that this parasitoid could be a candidate for biological control of S. frugiperda.

The fall armyworm <i>Spodoptera frugiperda</i> (J.E. Smith), a new pest of maize in Africa: biology and first native natural enemies detected

“…species is a larval endoparasitoid that plays an important role in regulating S. frugiperda (Molina-Ochoa et al, 2003;Dequech et al, 2005;Ordóñez-García et al, 2015). The FAW is a natural host of the parasitoid C. flavicincta (Neto et al, 2004;Zanuncio et al, 2013). The larvae of the parasitoid, just out of the larvae of S. frugiperda pest starts making his cocoon (9.5mm long) which allows it to continue his development until the emergence (Figure 4b-4c).…”

Global Habitat Suitability of Spodoptera frugiperda (JE Smith) (Lepidoptera, Noctuidae): Key Parasitoids Considered for Its Biological Control

“…In addition to egg parasitoids, the egg-larval and larval parasitoids, Chelonus insularis (Cres-son) and Cotesia marginiventris (Cresson) (both Hymenoptera: Braconidae), and Eiphosoma laphygmae Costa Lima (Hymenoptera: Ichneumonidae), respectively, emerged among the most prevalent natural enemies, and have also proven to be efficient against FAW [15][16][17]. Beside a pest risk clearance, the selection of a candidate parasitoid species for a biological control program is based on its reproductive performance, functional and numerical response profile, high behavioral host selection, resilience at low host population densities and dispersal capabilities [18][19][20][21]. However, for a candidate parasitoid to be successful in a given ecology, environmental and climatic variables coupled to landscape management features, suitability and prevalence of the host insect and its host plants, are key determinants [22,23].…”

Toxicological and behavioral impacts of atrazine on Trichogrammatidae (Hymenoptera) in choice tests

“…Corn (Zea mays L., Poaceae) is the most important cereal originating in the Americas and planted on large scale worldwide. Caterpillars and weeds are the main pests of the corn crop in Brazil (Zanuncio et al 2013;Menezes et al 2014). The caterpillars are controlled using insecticides, however, these products can cause environmental contamination and alternative methods are necessary to manage these insect pests (Tavares 2010).…”