Performances of six eupelmid egg parasitoids from China on Japanese giant silkworm Caligula japonica with different host age regimes

Chen, Yongming; Qu, Xing-Ran; Li, Tianhao; Iqbal, Asim; Wang, Xingeng; Ren, Zhiyong; Desneux, Nicolas; Zang, Lian‐Sheng

doi:10.1007/s10340-020-01271-1

Cited by 23 publications

(28 citation statements)

References 49 publications

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“…Trichogramma japonicum parasitized the eggs of all host species irrespective of egg’s age, indicating the acceptance of the egg of this species by the parasitoid, however, the level of parasitism varied. Similar findings were also noted by Chen et al [ 45 ]. In the current study, parasitism increased on the second day of oviposition by host species tested compared to other days.…”

Section: Discussionsupporting

confidence: 92%

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

et al. 2021

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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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Section: Discussionsupporting

confidence: 92%

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

et al. 2021

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“…This study aimed to assess the suitability of A. pernyi eggs as a factitious host for six eupelmid parasitoids, A. fulloi , Anastatus gansuensis Chen & Zang, A. japonicus , Anastatus meilingensis Sheng & Yu, M. albitarsis and M. trabalae . All six parasitoid species are major parasitoids of C. japonica in East Asia and have the potential to be used for augmentative biological control against this newly emerged and invasive pest 6,14 . We compared each parasitoid’s preference for differently treated host eggs (extracted or naturally laid, fertilized or unfertilized, and washed or unwashed prior to the use) as well as its offspring performance on the differently treated host eggs.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 Among them, some are important biological control agents for lepidopterous and hemipterous pests and have the potential to be used in augmentative biological control programs against fruit tree pests. [3][4][5][6] For example, several Anastatus parasitoids have been evaluated for biological control of some invasive agricultural and forestry pests, such as Anastatus bifasciatus (Geoffroy) for the brown marmorated stink bug, Halyomorpha halys Stål (Hemiptera: Pentatomidae) in Europe, 7,8 Anastatus disparis Ruschka (= Anastatus japonicus Ashmead) for the gypsy moth, Lymantria dispar L. (Lepidoptera: Lymantriidae) in the USA, 9 and, mostly recently, Anastatus orientalis Yang and Choi for the spotted lanternfly, Lycorma delicatula White (Hemiptera: Fulgoridae) in the USA. 10,11 A notable example is Anastatus fulloi Sheng & Wang, which has been used for successful control of the litchi stink bug, Tessaratoma papillosa Stål (Hemiptera: Tessaratomidae) in China since the late 1960s.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Mesocomys albitarsis Ashmead and Mesocomys trabalae Yao, Yang & Zhao were the two dominant species attacking the Japanese giant silkworm, Caligula japonica Moore (Lepidoptera: Saturniidae) in northwestern China. 6,[13][14][15] Mesocomys pulchriceps Cameron could effectively control the pine tree emperor moths, Imbrasia cytherea (Fabricius) and Gonimbrasia belina (Westwood) (both Lepidoptera: Saturniidae) in South Africa, 16 and Mesocomys breviscapis Yao, Yang & Zhao was effective against Dendrolimus spp. (Lepidoptera: Lasiocampidae) in China.…”

Section: Introductionmentioning

confidence: 99%

“…All six parasitoid species are major parasitoids of C. japonica in East Asia and have the potential to be used for augmentative biological control against this newly emerged and invasive pest. 6,14 We compared each parasitoid's preference for differently treated host eggs (extracted or naturally laid, fertilized or unfertilized, and washed or unwashed prior to the use) as well as its offspring performance on the differently treated host eggs. Our particular interest is to optimize the use of this factitious host for the rearing of these egg parasitoids, a critical step in future field release programs.…”

Section: Introductionmentioning

confidence: 99%

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Chinese oak silkworm Antherae pernyi egg, a suitable factitious host for rearing eupelmid egg parasitoids

Chen

Iqbal

Lv³

et al. 2022

Pest Management Science

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BACKGROUND Eupelmid egg parasitoids in the genera Anastatus and Mesocomys are important biological control agents for lepidopterous and hemipterous pests worldwide. The egg of Chinese oak silkworm Antheraea pernyi has been widely used for mass rearing of Trichogramma parasitoids. This study evaluated the suitability and optimal use methods of A. pernyi egg as a factitious host for the rearing of six eupelmid egg parasitoids (Anastatus fulloi, Anastatus gansuensis, Anastatus japonicus, Anastatus meilingensis, Mesocomys albitarsis and Mesocomys trabalae). Each parasitoid was tested for its oviposition preference and offspring performance on various differently treated host eggs (extracted from virgin moths or laid naturally by virgin or mated moths, and washed or unwashed prior to the use) in both no‐choice and choice tests. RESULTS All treated A. pernyi eggs were readily parasitized by the six parasitoids. In general, A. gansuensis and M. trabalae preferred washed over unwashed eggs regardless of the fertilization status of host eggs, A. fulloi and A. meilingensis parasitized more unfertilized than fertilized host eggs, and A. japonicus and M. albitarsis did not show a preference among differently treated host eggs. Host egg treatment did not significantly affect offspring fitness (development time, survival, sex ratio and body size) nor reproductive potential of developed adult females for each parasitoid species, except for M. albitarsis (whose females contained more eggs when reared from unfertilized than fertilized host eggs). CONCLUSION Results suggest that manually extracted, unfertilized and washed A. pernyi eggs are most suitable for mass rearing of these eupelmid egg parasitoids in biological control programs.

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Comparative demographics, population projections and egg maturation patterns of four eupelmid egg parasitoids on the factitious host Antherae pernyi

Chen

Wang

et al. 2023

Pest Management Science

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BACKGROUNDThe genera Anastatus and Mesocomys (both Hymenoptera: Eupelmidae) are important solitary egg endoparasitoids as biological control agents for lepidopterous and hemipterous pests worldwide. Here, we comparatively evaluated the demographic parameters of four important eupelmid egg parasitoids (Anastatus fulloi, A. japonicus, Mesocomys albitarsis and M. trabalae) reared on the factitious host eggs of the Chinese oak silkworm Antheraea pernyi, using age‐stage two‐sex life tables, their population projections as well as egg maturation patterns.RESULTSBoth the age‐specific net reproductive rate (lxmx) and reproductive value (vxj) increased initially and then gradually decreased with increasing age in all four parasitoid species. Overall, the two Mesocomys species had higher survival rates at stable age‐stage distribution, peak reproductive values, and intrinsic rates of increase than the two Anastatus species. Mesocomys albitarsis had the longest longevity, whereas A. japonicus had the longest oviposition days and mean generation time. The two Mesocomys species are thus projected to have faster population increase than the two Anastatus species. Adult females of all four parasitoid species emerged with only a few mature eggs (< 6 eggs) and most of their eggs were matured post‐emergence (strict synovigeny). The estimated 90% of lifetime complement of reproduction (offspring) and realized days were 374 and 32 for A. japonicus, 337 and 22 for M. trabalae, 330 and 19 for M. albitarsis and 147 and 28 for A. fulloi.CONCLUSIONOur results indicated that the two Mesocomys species have higher control capacity than the two Anastatus species. Provision of adult food for these strictly synovigenic parasitoids would be essential to prolong their lifespan and continuously produce eggs for parasitizing their hosts for mass rearing or augmentative biological control programs. © 2023 Society of Chemical Industry.

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Performances of six eupelmid egg parasitoids from China on Japanese giant silkworm Caligula japonica with different host age regimes

Cited by 23 publications

References 49 publications

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

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

Chinese oak silkworm Antherae pernyi egg, a suitable factitious host for rearing eupelmid egg parasitoids

Comparative demographics, population projections and egg maturation patterns of four eupelmid egg parasitoids on the factitious host Antherae pernyi

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