Paralysis and parasitisation potential of Bracon hebetor on various Lepidopteran hosts

2017 ◽  
Vol 37 (04) ◽  
Author(s):  
Mohammad Muslim ◽  
M. Shafiq Ansari ◽  
Fazil Hasan
Keyword(s):  
Biological Control ◽  
Spodoptera Littoralis ◽  
Spodoptera Litura ◽  
Artificial Diet ◽  
Galleria Mellonella ◽  
Plodia Interpunctella ◽  
Mass Rearing ◽  
Corcyra Cephalonica ◽  
Biological Control Agents ◽  
Bracon Hebetor

Bracon hebetor is a Lepidopteran parasitoid which is used in IPM program as biological control agents. Corcyra cephalonica is fictitious host for mass rearing of B. hebetor in laboratory, rest hosts reared on their respective hosts i.e. Corcyra cephalonica, Plodia interpunctella, Ephestia kuehniella were reared on wheat flour, Galleria mellonella on its artificial diet, Helicoverpa armigera on chickpea pods, Earias vitella on okra fruits, Spodoptera litura and Spodoptera littoralis on castor leaves. The results of this study showed that the paralysis and parasitisation potential of B. hebetor were found higher on C. cephalonica followed by G. mellonella, E. kuehniella, P. interpunctella while it was shortest on S. litura and S. littoralis.

The biology of the ectoparasitoid wasp Eulophus pennicornis (Hymenoptera: Eulophidae) on host larvae of the tomato moth, Lacanobia oleracea (Lepidoptera: Noctuidae)

1995 ◽  
Vol 85 (4) ◽  
pp. 507-513 ◽  
Author(s):  
G.C. Marris ◽  
J.P. Edwards
Keyword(s):  
Biological Control ◽  
Sex Ratio ◽  
Artificial Diet ◽  
Limited Range ◽  
Pest Species ◽  
Biological Control Agents ◽  
Biased Sex Ratio ◽  
Horticultural Pest ◽  
Lepidoptera Noctuidae

AbstractThere is a need to identify potential biological control agents for use against noctuid pests in greenhouses. The gregarious ectoparasitoid Eulophus pennicornis (Nees) attacks a limited range of macrolepidopterous larvae, including those of some important horticultural pest species. Laboratory trials designed to investigate the biology of E. pennicornis on larvae of the tomato moth, Lacanobia oleracea Linnaeus, reveal that wasps preferentially parasitize penulitmate (fifth) or final (sixth) instar hosts. More than two-thirds of wasps lay viable eggs, and individual females oviposit on up to four hosts during their lifespan. Wasp fecundity is high, preadult development is rapid, and offspring show a markedly female-biased sex ratio. Parasitized fifth instar L.oleracea hosts do not grow as quickly as unparasitized larvae, and neither do they undergo normal ecdysis to the final larval stadium. Furthermore, the consumption of artificial diet by parasitized fifth instar hosts is greatly reduced in comparison to that of unparasitized larvae (overall feeding-reduction over a 12 day period was 64.7%). Our results suggest that E. pennicornis affects both the developmental and feeding physiology of host larvae, and that inoculative releases of this parasitoid could provide effective biological control for L. oleracea and other greenhouse pests.

Density-dependent dispersal in biological control agents: a reflexion on the side-effects of mass-rearing conditions

BioControl ◽  
2015 ◽  
Vol 61 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Antoine Zboralski ◽  
Marine Vilarelle ◽  
Etty Colombel ◽  
Elisabeth Tabone ◽  
Elodie Vercken
Keyword(s):  
Biological Control ◽  
Side Effects ◽  
Mass Rearing ◽  
Biological Control Agents ◽  
Density Dependent ◽  
Rearing Conditions ◽  
Density Dependent Dispersal

Effects of different host species on the life history of Bracon hebetor

2016 ◽  
Vol 66 (3-4) ◽  
pp. 403-414 ◽  
Author(s):  
Muhammad S. Khalil ◽  
Abu Bakar M. Raza ◽  
Muhammad Afzal ◽  
Muhammad A. Aqueel ◽  
Huma Khalil ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Helicoverpa Armigera ◽  
Host Species ◽  
Spodoptera Litura ◽  
Galleria Mellonella ◽  
Sitotroga Cerealella ◽  
Phylogenetic Distance ◽  
Hypera Postica ◽  
Bracon Hebetor ◽  
Helicoverpa Armígera

Bracon hebetor(Hymenoptera: Braconidae) is a generalist idiobiont ecto-parasitoid that parasitizes a wide range of Lepidoptera and even some phylogenically distant weevil species (Coleoptera; Curculionidae). In the present context, our aim is to find the most suitable host for efficient laboratory rearing ofB. hebetor. We compared fitness traits of this parasitoid wasp on five host species, four species belonging to the Lepidoptera, viz.Galleria mellonella(Pyralidae),Helicoverpa armigeraandSpodoptera litura(Noctuidae),Sitotroga cerealella(Gelechiidae), and one to the Coleoptera, the alfalfa weevilHypera postica(Curculionidae). We determined the parasitic potential, paralysis, daily oviposition rate, development time, total adult progeny, sex ratio and survival. Fecundity was followed during five consecutive days and oviposition period was determined, all under laboratory conditions. The best results were obtained on the wax moth larvae (G. mellonella) for whichB. hebetorproved the highest biological activity in term of paralysis, parasitism and oviposition as compared to other tested host species. InGalleria mellonella, total eggs laid per female per five days and egg-adult survivorship were higher and sex ratio was highly biased toward females, as compared toHypera postica. Intermediate biological activities were found onHelicoverpa armigera,Spodoptera lituraandSitotroga cerealella. These contrasting results show that the plasticity of this species could also represent an important fitness cost difference in performance, which is discussed in terms of phylogenetic distance of the host species (particularly Pyralidae). In conclusion, the possible application of these results can be used in the economically important field of biological control and improve storage of products affected by insect pests.

scholarly journals A survey investigating the diversity and distribution of entomopathogenic nematodes in the UK and the first confirmed UK record of Steinernema carpocapsae

Nematology ◽  
2018 ◽  
Vol 20 (9) ◽  
pp. 851-858 ◽  
Author(s):  
Cassandra Edmunds ◽  
Rory J. Post ◽  
Craig S. Wilding ◽  
Robbie Rae
Keyword(s):  
Biological Control ◽  
Entomopathogenic Nematodes ◽  
Galleria Mellonella ◽  
Soil Samples ◽  
Steinernema Carpocapsae ◽  
Biological Control Agents ◽  
Diverse Range ◽  
The World ◽  
The Uk ◽  
Insect Parasites

Summary Entomopathogenic nematodes (EPN) of the families Steinernematidae and Heterorhabditidae are lethal insect parasites that have been commercialised as biological control agents. EPN have been isolated from across the world but it has been more than 20 years since the last survey of the UK, and species like Steinernema carpocapsae have never been found here and positively identified through molecular biology. We collected 518 soil samples from a diverse range of habitats across the UK and baited them with Galleria mellonella to isolate EPN. Dead G. mellonella were placed in White traps and emergent EPN underwent DNA barcoding analyses. From the 518 samples, 3.5% were positive for EPN. No Heterorhabditis species were found, but seven isolates of S. glaseri, one isolate of S. feltiae, eight isolates of S. affine and two isolates of S. carpocapsae were found. This was the first confirmed record of S. carpocapsae in the UK.

scholarly journals Cold storage-mediated rearing of Trichogramma evanescens Westwood on eggs of Plodia interpunctella (Hübner) and Galleria mellonella L.

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0253287
Author(s):  
Aslam Haque ◽  
Saiful Islam ◽  
Abdul Bari ◽  
Akhtar Hossain ◽  
Christos G. Athanassiou ◽  
...  
Keyword(s):  
Quality Control ◽  
Host Species ◽  
Galleria Mellonella ◽  
Biological Control Agent ◽  
Production Capacity ◽  
Plodia Interpunctella ◽  
Mass Rearing ◽  
Trichogramma Evanescens ◽  
Control Plan ◽  
The Impact

The egg parasitoid Trichogramma evanescens Westwood is considered as an efficient biological control agent for managing several lepidopteran pests and it is widely distributed throughout the world. Mass rearing protocols of parasitoids that are currently in use in biocontrol programs require a meticulous quality control plan, in order to optimize their efficacy, but also their progeny production capacity. In this paper, the effect of different factors on the quality control in mass rearing of T. evenescens, using Plodia interpunctella (Hübner) and Galleria mellonella L. as host species, were investigated. The impact of egg agewas significant in the rates of parasitism, for both host species tested. Significantly highest percent of parasitoid emergence was noticed in two day-old eggs for both host species, while one day-old eggs day exhibited the maximum emergence when both species were used togetherin the same trials. Age-dependent storage egg preservation at either 4 or 9°C significantly influenced the parasitism percentages on both species. The highest parasitism percentage was recorded in two day-old G. mellonella eggs that are kept for 15 days at 9°C while the lower in one day-old P. interpunctella eggs for 60 d storage. Moreover, the highest parasitoid mortality was recorded in T. evanescens reared either on P. interpunctella or G. mellonella at 20°C. Rearing of the parasitoid on a mixture of eggs of both host species resulted in higher parasitism, but not always in higher rates of parasitoid emergence. The results of the present work provide useful information that can be further utilized in rearing protocols of T. evanescens.

scholarly journals Laboratory Rearing ofLaricobius nigrinus(Coleoptera: Derodontidae): A Predator of the Hemlock Woolly Adelgid (Hemiptera: Adelgidae)

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
S. M. Salom ◽  
L. T. Kok ◽  
A. B. Lamb ◽  
C. Jubb
Keyword(s):  
Biological Control ◽  
Mass Rearing ◽  
Hemlock Woolly Adelgid ◽  
Biological Control Agents ◽  
Laboratory Rearing ◽  
Invasive Pests ◽  
Laricobius Nigrinus ◽  
Large Numbers

Coleopteran species are biological control agents of numerous invasive pests.Laricobius nigrinus(Coleoptera: Derodontidae), a predaceous, univoltine species, spends the summer aestivating but is active for the rest of the year.Laricobius nigrinuspossesses many essential attributes for effective biological control of the hemlock woolly adelgid (Hemiptera: Adelgidae). The predator must be reared in large numbers for field releases. We describe some of the studies that led to the successful procedures currently used for mass rearingL. nigrinus.

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