Corcyra cephalonica: A serious pest of stored products or a factitious host of biocontrol agents?

The present investigations were undertaken in laboratory on “Study on factitious host Corcyra cephalonica (Stainton) against storage of egg parasitoid Trichogramma chilonis (Ishii) cards under laboratory conditions” during the year 2018 in the bio-control laboratory, Department of Agricultural Entomology, College of Agriculture, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (U. P.) India. The effects of different rearing media on some biological parameters of factitious host, C. cephalonica are based on results are most effective performance with T3 (Sorghum + Groundnut + Yeast powder, 50:50 + 5g Yeast), treatments i.e. larval, pupal, male and female moths emergence, and egg production in cc and followed by 17530, 16667, 15131,14875, 13545 and 11830 i.e. T3 (Sorghum + Groundnut + Yeast powder, 50:50 + 5g Yeast), T5 (Sorghum + Soyabeen + Yeast powder, 50:50 + 5g Yeast), T6 (Sorghum + Cowpea + Yeast powder, 50:50 + 5g Yeast), T4 (Sorghum + Gram powder + Yeast powder, 50:50 + 5g Yeast), T2 (Sorghum + Green Gram + Yeast powder, 50:50 +5g Yeast), T1 (Sorghum + Black gram + Yeast powder, 50:50 + 5g Yeast) and T7 (Sorghum alone (check) eggs per cc of Sorghum + Groundnut + Yeast powder, 50:50 + 5g Yeast and wheal), respectively.

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Performance of Trichogramma japonicum under field conditions as a function of the factitious host species used for mass rearing

PLoS ONE ◽

10.1371/journal.pone.0256246 ◽

2021 ◽

Vol 16 (8) ◽

pp. e0256246

Author(s):

Basana Gowda G. ◽

Guru Pirasanna Pandi G. ◽

Farman Ullah ◽

Naveenkumar B. Patil ◽

Madhusmita Sahu ◽

...

Keyword(s):

Host Species ◽

Stem Borer ◽

Mass Rearing ◽

Corcyra Cephalonica ◽

Sitotroga Cerealella ◽

Asian Continent ◽

Mass Rear ◽

Yellow Stem Borer ◽

Factitious Host ◽

Different Parts

Different factitious hosts were used to mass rear Trichogramma japonicum Ashmead in different parts of the globe because thorough details were lacking in both the laboratory and the field. The objective of this study was to compare, parasitoid, T. japonicum reared in different factitious hosts. Three commonly used factitious host eggs, Corcyra cephalonica (Stainton), Ephestia kuehniella Zeller and Sitotroga cerealella Olivier were tested under laboratory conditions and then in the field over a yellow stem borer, Scirpophaga incertulus (Walker) of rice. The highest parasitism by T. japonicum was observed on E. kuehniella eggs. The parasitoid’s highest emergence (88.99%) was observed on S. cerealella eggs at 24 h exposure, whereas at 48 h it was on E. kuehniella eggs (94.66%). Trichogramma japonicum females that emerged from E. kuehniella eggs were significantly long-lived. The days of oviposition by hosts and the host species were significant individually, but not their interaction. Higher proportions of flying T. japonicum were observed when reared on E. kuehniella and C. cephalonica eggs. Field results showed that T. japonicum mass-reared on E. kuehniella showed higher parasitism of its natural host, S. incertulus eggs. Hence, by considering these biological characteristics and field results, E. kuehniella could be leveraged for the mass rearing of quality parasitoids of T. japonicum in India, the Asian continent and beyond.

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EARLY DETECTION OF TRICHOGRAMMA CHILONIS SEXES USING THE EGG COLOR AND SIZE OF ITS FACTITIOUS HOST, CORCYRA CEPHALONICA

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA ◽

10.23960/j.hptt.1730-38 ◽

2007 ◽

Vol 7 (1) ◽

pp. 30-38

Author(s):

F.X. Susilo ◽

Desta S. Romli ◽

Sunaryo Sunaryo ◽

M. Solikhin

Keyword(s):

Early Detection ◽

Egg Size ◽

Test Tube ◽

Corcyra Cephalonica ◽

Gray Scale ◽

Female Progeny ◽

Trichogramma Chilonis ◽

Factitious Host ◽

Lepidoptera Pyralidae ◽

Level Of Significance

Early Detection of Trichogramma chilonis sexes using the egg color and size of its factitious host Corcyra cephalonica. This study was aimed to detect the sexes of Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae) prior to their emergence using the egg color and size of their factitious host, Corcyra cephalonica (Lepidoptera: Pyralidae). A gray scale of 1 – 7 was used to rank the egg color while a micrometer was used to observe the egg size under a dissecting microscope. Ten of newly laid C. cephalonica eggs were glued in two rows (0.5 cm x 0.4 cm distance) on a piece of oviposition paper. Five replications of such batches were exposed in a test tube to a gravid T. chilonis female for 24 hours under 100 watts of illumination. Following the withdrawal from the oviposition arena the eggs were each observed daily for their color and size and the sex of the emerged T. chilonis progeny was documented. Binomial Z-test at 0.05 level of significance was used to validate the predicted proportion of T. chilonis sexes from five batches of 50 parasitized C. cephalonica eggs. The results showed as predicted that more T. chilonis female progeny emerged from light-colored C. cephalonica eggs (scale 2 – 5) following oviposition by parent parasitoid or from larger C. cephalonica eggs (> 500 µm).

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Quality control of Telenomus remus (Hymenoptera: Platygastridae) reared on the factitious host Corcyra cephalonica (Lepidoptera: Pyralidae) for successive generations

Bulletin of Entomological Research ◽

10.1017/s000748531700030x ◽

2017 ◽

Vol 107 (6) ◽

pp. 791-798 ◽

Cited By ~ 5

Author(s):

A.P. Queiroz ◽

A. de Freitas Bueno ◽

A. Pomari-Fernandes ◽

M.L.M. Grande ◽

O.C. Bortolotto ◽

...

Keyword(s):

Quality Control ◽

Egg Parasitoid ◽

The Body ◽

Corcyra Cephalonica ◽

Factitious Host ◽

Lepidoptera Pyralidae ◽

Successive Generations ◽

Lepidoptera Noctuidae ◽

Telenomus Remus

AbstractEgg parasitoid rearing on factitious hosts is an important step to reduce costs and increase availability of the biocontrol agent but it requires quality control to achieve success in field conditions. To this end, this study evaluated the quality of Telenomus remus (Hymenoptera: Platygastridae) reared on Corcyra cephalonica (Lepidoptera: Pyralidae) for until 45 generations. In the first bioassay, we evaluated the body size of the laboratory-produced parasitoids. In the second bioassay, flight activity was examined, measuring the percentage of ‘flyers’, ‘walkers’ and ‘deformed’ parasitoids. The third bioassay assessed parasitism on Spodoptera frugiperda (Lepidoptera: Noctuidae) eggs. Our data indicate that the laboratory-reared parasitoid neither lost its ability to fly nor to parasitize S. frugiperda eggs. In conclusion, quality did not decrease significantly during 45 generations, and therefore rearing of T. remus on C. cephalonica as factitious host promises to be successful.

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