scholarly journals Influence of host plant, geography and pheromone strain on genomic differentiation in sympatric populations of Ostrinia nubilalis

2019 ◽  
Vol 28 (19) ◽  
pp. 4439-4452 ◽  
Author(s):  
Brad S. Coates ◽  
Genevieve M. Kozak ◽  
Kyung Seok Kim ◽  
Jing Sun ◽  
Yangzhou Wang ◽  
...  
Keyword(s):  
Host Plant ◽  
Ostrinia Nubilalis ◽  
Sympatric Populations ◽  
Plant Geography

scholarly journals Prevalence rates of Wolbachia endosymbiotic bacterium in natural populations of Ostrinia Nubilalis and Ostrinia Scapulalis (Lepidoptera: Pyraloidea: Crambidae) in South-Western Russia

2017 ◽  
Vol 15 (1) ◽  
pp. 44 ◽  
Author(s):  
Yuri S Tokarev ◽  
Mariya A Yudina ◽  
Julia M Malysh ◽  
Roman A Bykov ◽  
Andrei N Frolov ◽  
...  
Keyword(s):  
Ostrinia Nubilalis ◽  
Molecular Genetic ◽  
Natural Populations ◽  
Prevalence Rates ◽  
Positive Signal ◽  
Sympatric Populations ◽  
Corn Borer ◽  
Corn Borers ◽  
Endosymbiotic Bacteria ◽  
Ostrinia Scapulalis

Background. Endosymbiotic bacteria of the genus Wolbachia are widespread in arthropods and often cause reproductive abnormalities in lepidopteran insects, including corn borers of the genus Ostrinia. Wolbachia-Ostrinia is a promising model for studies of parasite-host interactions yet parasite prevalence in natural insect host populations remains unknown. Materials and Methods. Molecular genetic screening and statistical analysis is applied to evaluate prevalence rates of Wolbachia in sympatric populations of two corn borer species. Individual genomic DNA samples were extracted from last instar larvae collected in nature from different forage plants. For each sample of DNA showing positive signal with insect-specific primers the detection is performed using three diagnostic loci of Wolbachia: 16SrRNA, gatB and fbpA. Results. Wolbachia-positive signal is obtained for 13.5% larvae of Ostrinia nubilalis (N = 141) and 31.9% larvae of Ostrinia scapulalis (N = 138). In different localities the Wolbachia prevalence ranged from 2.9% (N = 34) to 65.8% (N = 38). Significantly higher rates of Wolbachia prevalence in insects from mugwort and hemp (O. scapulalis) as compared to those from corn (O. nubilalis) are revealed in three out of four localities. Conclusions. Endosymbiotic bacteria of the genus Wolbachia are revealed in natural populations of corn borers for the first time for Eastern Europe. The prevalence rates can be high and this should be taken into consideration when reproductive isolation is examined in population of these hosts as well as establishment of laboratory cultures is performed.

scholarly journals Genomic Traces of the Fruit Fly Anastrepha obliqua Associated with Its Polyphagous Nature

Insects ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1116
Author(s):  
Elkin Aguirre-Ramirez ◽  
Sandra Velasco-Cuervo ◽  
Nelson Toro-Perea
Keyword(s):  
Population Structure ◽  
Host Plant ◽  
Host Plants ◽  
Nuclear Dna ◽  
Mangifera Indica ◽  
Protein Families ◽  
Sympatric Populations ◽  
New Host ◽  
The Family ◽  
Anastrepha Obliqua

Anastrepha obliqua (Macquart) (Diptera: Tephritidae) is an important pest in the neotropical region. It is considered a polyphagous insect, meaning it infests plants of different taxonomic families and readily colonizes new host plants. The change to new hosts can lead to diversification and the formation of host races. Previous studies investigating the effect of host plants on population structure and selection in Anastrepha obliqua have focused on the use of data from the mitochondrial DNA sequence and microsatellite markers of nuclear DNA, and there are no analyses at the genomic level. To better understand this issue, we used a pooled restriction site-associated DNA sequencing (pooled RAD-seq) approach to assess genomic differentiation and population structure across sympatric populations of Anastrepha obliqua that infest three host plants—Spondias purpurea (red mombin), Mangifera indica (mango) of the family Anacardiaceae and Averrhoa carambola (carambola) of the family Oxalidaceae—in sympatric populations of the species Anastrepha obliqua of Inter-Andean Valley of the Cauca River in southwestern Colombia. Our results show genomic differentiation of populations from carambola compared to mango and red mombin populations, but the genetic structure was mainly established by geography rather than by the host plant. On the other hand, we identified 54 SNPs in 23 sequences significantly associated with the use of the host plant. Of these 23 sequences, we identified 17 candidate genes and nine protein families, of which four protein families are involved in the nutrition of these flies. Future studies should investigate the adaptive processes undergone by phytophagous insects in the Neotropics, using fruit flies as a model and state-of-the-art molecular tools.

scholarly journals Plant pathogen mediates rapid adaptation of insect to new host plant

2020 ◽  
Author(s):  
Farhan Ali ◽  
Nan Bai ◽  
Fengyin Yang ◽  
Xiaoyue Hu ◽  
Yongmo Wang
Keyword(s):  
Host Plant ◽  
Aphis Gossypii ◽  
Cucumber Plant ◽  
Sympatric Populations ◽  
New Host ◽  
Phloem Sap ◽  
Host Plant Adaptation ◽  
Two Generations ◽  
History Of ◽  
Melon Aphid

The cotton-melon aphid, Aphis gossypii Glover, an extremely polyphagous pest insect, comprises of sympatric populations specialized on deferent host plants. The life history of A. gossypii infesting cucurbit crops remains elusive because oviparous aphids from overwintering hosts (often hibiscus) cannot colonize cucurbit crops. We verified that the hibiscus-specialized lineage (HI) suffered high mortality and gave birth to very few nymphs developing into yellow dwarfs when transferred to fresh cucumber because the HI lineage was unable to ingest phloem sap from fresh cucumber. However, the HI lineage ingested phloem sap successfully when cucumber leaves were pre-infected with Pseudoperonospora cubensis, a biotrophic phytopathogen, accompanied by significant fitness improvement. More surprisingly, the HI lineage with feeding experience on pre-infected cucumber for two generations performed as well as the cucumber-specialized lineage (CU) did on fresh cucumber, and inflicted typical damage symptom to healthy cucumber plant. This phytopathogen mediated host plant adaptation may be widespread in polyphagous aphids.

scholarly journals GENETIC ISOLATION BETWEEN TWO SYMPATRIC HOST-PLANT RACES OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS HUBNER I. SEX PHEROMONE, MOTH EMERGENCE TIMING, AND PARASITISM

Evolution ◽  
2003 ◽  
Vol 57 (2) ◽  
pp. 261-273 ◽  
Author(s):  
Yan Thomas ◽  
Marie-Thérèse Bethenod ◽  
Laurent Pelozuelo ◽  
Brigitte Frérot ◽  
Denis Bourguet
Keyword(s):  
Sex Pheromone ◽  
Host Plant ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Genetic Isolation ◽  
Corn Borer

scholarly journals Host–plant diversity of the European corn borer Ostrinia nubilalis : what value for sustainable transgenic insecticidal Bt maize?

2000 ◽  
Vol 267 (1449) ◽  
pp. 1177-1184 ◽  
Author(s):  
Denis Bourguet ◽  
Marie Thérése Bethenod ◽  
Caroline Trouvé ◽  
Frédérique Viard
Keyword(s):  
Host Plant ◽  
Plant Diversity ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Bt Maize ◽  
Corn Borer

Host-Plant Specialization in Pheromone Strains of the European Corn Borer Ostrinia nubilalis in France

2004 ◽  
Vol 30 (2) ◽  
pp. 335-352 ◽  
Author(s):  
L. Pelozuelo ◽  
C. Malosse ◽  
G. Genestier ◽  
H. Guenego ◽  
B. Frerot
Keyword(s):  
Host Plant ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Corn Borer ◽  
Host Plant Specialization

Carbon stable isotopes: a tool for studying the mating, oviposition, and spatial distribution of races of European corn borer, Ostrinia nubilalis, among host plants in the field

2004 ◽  
Vol 82 (7) ◽  
pp. 1177-1185 ◽  
Author(s):  
S Ponsard ◽  
M -T Bethenod ◽  
A Bontemps ◽  
L Pélozuelo ◽  
M -C Souqual ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Host Plant ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Stable Carbon Isotopes ◽  
Pest Species ◽  
Plant Type ◽  
Corn Borer ◽  
Adult Feeding ◽  
C Value

The European corn borer, Ostrinia nubilalis (Hübner, 1796) (Lepidoptera: Crambidae), is a polyphagous corn pest species that includes two host races: one feeding on corn (Zea mays L.) and one feeding on mugwort (Artemisia vulgaris L.) and hop (Humulus lupulus L.). Being able to determine the type of host plant on which field-caught moths fed as larvae would allow for the quantification of mating rates within and between races, as well as the quantification of the spatial distribution and oviposition of both races in the field. We found that stable carbon isotopes (δ;13C) are a reliable indicator of host-plant photosynthetic type (C3 or C4) regardless of adult food and intensity of metabolism; so even when food or metabolism had a significant effect on wing δ13C values, the magnitude of this effect was too small to obscure the signal characterizing host-plant type. Egg and spermatophore δ13C values similarly reflect female and male host-plant type, respectively, regardless of adult feeding. We found 224 host-plant species of O. nubilalis in the literature, including 19 species with C4-type photosynthesis. However, in temperate areas, corn is probably the only significant C4 source of adult moths. Accordingly, wing δ13C values were more variable in field-caught moths showing a typical C3-type δ13C value than in those showing a typical C4-type δ13C value.

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