Preimaginal developmental time of two egg parasitoids and their host searching efficiency

Barakat, María Candela; Liljesthröm, Gerardo Gustavo; Cingolani, María Fernanda

doi:10.1080/09583157.2020.1745148

Cited by 3 publications

(4 citation statements)

References 22 publications

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“…urichi and N. viridula eggs did not influence the life cycle, the number of individuals per egg, and the longevity of males and females of this parasitoid, however, these characteristics were compromised by the non-target host, possibly due to its limited nutritional resources, inadequate egg size or even by the barriers of its immune system, as already mentioned (Vinson, 1976;Strand & Vinson, 1983;Abram et al, 2019). Other authors also report that T. urichi does not always develop in N. viridula eggs (Sujii et al, 2002), although its biological characteristics may undergo variations when subjected to other hosts of the Pentatomidae family (Laumann et al, 2008(Laumann et al, , 2010Barakat et al, 2020).…”

Section: Discussionmentioning

confidence: 73%

Reproduction of Ooencyrtus submetallicus (Hymenoptera: Encyrtidae) and Trissolcus sp. aff. urichi (Hymenoptera: Scelionidae) in Eggs of Nezara viridula (Hemiptera: Pentatomidae) of Different Ages

Faca¹,

Pereira²,

Fernandes³

et al. 2021

JAS

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The study of the interaction between parasitoid and host, especially the age of these organisms, is an important step towards the implementation of biological control programs. Therefore, we investigated the performance of Ooencyrtus submetallicus (Hymenoptera: Encyrtidae) and Trissolcus sp. aff. urichi (Hymenoptera: Scelionidae) parasitizing eggs of Nezara viridula (Hemiptera: Pentatomidae), considering different ages of the parasitoids and the host. We performed four laboratory bioassays: two using females of O. submetallicus and Trissolcus sp. aff. urichi at 24, 48, 72, 96, 120, or 144 hours of age exposed to parasitism in N. viridula eggs (24 h) and two trials with N. viridula eggs at 24, 48, 72, 96, 120, or 144 hours exposed to the parasitism of O. submetallicus and Trissolcus sp. aff. urichi (24 h). We evaluated the percentage of parasitism and emergence, life cycle length, progeny, sex ratio, and the longevity of the parasitoids. The parasitism of O. submetallicus in N. viridula eggs was influenced by the age of the parasitoid, 120 hours being the minimum to obtain better parasitism. From this age on, there is interference in the longevity of the progeny. Trisolcus sp. aff. urichi, at all ages, parasitized N. viridula eggs relatively well, but with almost no emergence of the parasitized eggs. Females of O. submetallicus parasitized and developed in eggs of N. viridula of all ages. Females of Trissolcus sp. aff. urichi parasitized their host, but there was barely any emergence. These pieces of information regarding the breeding methodology contribute to the implementation of new protocols for the multiplication of these parasitoids in the laboratory, and later, their release in the field.

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Section: Discussionmentioning

confidence: 73%

Reproduction of Ooencyrtus submetallicus (Hymenoptera: Encyrtidae) and Trissolcus sp. aff. urichi (Hymenoptera: Scelionidae) in Eggs of Nezara viridula (Hemiptera: Pentatomidae) of Different Ages

Faca¹,

Pereira²,

Fernandes³

et al. 2021

JAS

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“…parasitoids), suggests competition between them. Negative interactions such as intra-or interspecific competition occur when several parasitoid females simultaneously search for the same host (Barakat et al, 2020). This competition can occur among adult parasitoids (extrinsic competition) or between larvae developing (intrinsic competition) of: i) same species (superparasitism) or ii) different species (multiparasitism) (Barakat et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Negative interactions such as intra-or interspecific competition occur when several parasitoid females simultaneously search for the same host (Barakat et al, 2020). This competition can occur among adult parasitoids (extrinsic competition) or between larvae developing (intrinsic competition) of: i) same species (superparasitism) or ii) different species (multiparasitism) (Barakat et al, 2020). This competition was reported for Cardiochiles nigriceps Viereck and Microplitis croceipes (Cresson) (Hymenoptera: Brachonidae) in Heliothis virescens F. (Lepidoptera: Noctuidae) caterpillars and Trissolcus basalis Woll.…”

Section: Discussionmentioning

confidence: 99%

“…and Ooencyrtus telenomicida (Vassiliev) (Hymenoptera: Encyrtidae) in Nezara viridula L. (Hemiptera: Pentatomidae) eggs (De Moraes et al, 1999;Cusumano et al, 2012). Competitive interactions between parasitoids are relevant in the biological control since these interactions affect the mortality of the targeted hosts and more species that are introduced; the greater the effect of reducing pest density, but multiple species can also disrupt biological control (Cusumano et al, 2012;Barakat et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

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Free-feeding organisms and galling insects (Hymenoptera) interactions on Caryocar brasiliense (Malpighiales: Caryocaraceae) trees, a savanna plant from Brazil

et al. 2024

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Galling insects are abundant in nature, found in many ecosystems globally, with species attacking plants of economic importance. We studied the effects of free-feeding organisms on the abundance of galling insects on Caryocar brasiliense (Caryocaraceae) trees in the Brazilian Cerrado (Savanna). Percentage of defoliation and the number of phytophagous mites or number of phytophagous Hemiptera correlated negatively with percentage of galled leaves and the parasitoid Eurytoma sp. (Hymenoptera: Eurytomidae) adults, respectively. Percentage of galled leaves and the numbers of Eurytoma sp. adults and phytophagous mites correlated positively with spiders. Numbers of mites and Hemiptera phytophagous correlated positively with those of lady beetles and Sycophila sp. (Hymenoptera: Eurytomidae), respectively. The number of Ablerus magistretti Blanchard (Hymenoptera: Aphelinidae) adults correlated negatively with Sycophila sp. The number of Agistemus sp. (Acari: Stigmaeidae) correlated, negatively and positively, with those of lady beetles and phytophagous mites, respectively. Free-feeding herbivores affected the presence of galling insects (Hymenoptera) on C. brasiliense trees, competing for food and space. The same was observed between two parasitoids of Eurytoma sp. galling insect, which can reduce the natural biological control of this pest.

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Biology, ecology, and management of redbanded stink bug (Hemiptera: Pentatomidae)

Okosun,

George,

Portilla

et al. 2024

Journal of Integrated Pest Management

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The redbanded stink bug (RBSB), Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae) is an invasive stink bug species and a polyphagous pest of cultivated crops and non-cultivated wild plants. The increase in soybean cultivation during the 1960s–1970s led to the spread of RBSB as an economic pest of soybean throughout South America, especially in Brazil, Argentina, and Uruguay. In the early 2000s, RBSB became an economic concern to US agriculture and is currently a key species in a stink bug complex that damages soybean in many mid-southern states. RBSB causes extensive damage to soybeans and other economically important leguminous crops by feeding on sap from stems, flowers, and foliage with a preference for pods and seeds, which causes flat pods, reduced seed weight, and germination. Infestation by RBSB may lead to more crop loss per capita than other stink bug species. RBSBs are less susceptible to commonly used agrochemicals than other stink bug species and have developed resistance to many commonly used insecticides. Several alternative control strategies based on a wide variety of methods have been reported in recent years. This review will discuss the distribution, biology, ecology, and various control strategies for integrated management of RBSB in the last 2 decades.

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Preimaginal developmental time of two egg parasitoids and their host searching efficiency

Cited by 3 publications

References 22 publications

Reproduction of Ooencyrtus submetallicus (Hymenoptera: Encyrtidae) and Trissolcus sp. aff. urichi (Hymenoptera: Scelionidae) in Eggs of Nezara viridula (Hemiptera: Pentatomidae) of Different Ages

Reproduction of Ooencyrtus submetallicus (Hymenoptera: Encyrtidae) and Trissolcus sp. aff. urichi (Hymenoptera: Scelionidae) in Eggs of Nezara viridula (Hemiptera: Pentatomidae) of Different Ages

Free-feeding organisms and galling insects (Hymenoptera) interactions on Caryocar brasiliense (Malpighiales: Caryocaraceae) trees, a savanna plant from Brazil

Biology, ecology, and management of redbanded stink bug (Hemiptera: Pentatomidae)

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