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31 results for “Mythimna”
Microsatellite-based analysis of genetic structure and gene flow of Mythimna separata (Walker) (Lepidoptera: Noctuidae) in China
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Data from: The effects of climate warming on the migratory status of early summer populations of Mythimna separata(Walker) moths: a case-study of enhanced corn damage in central-northern China, 1980 - 2016
Mythimna separata (Walker) moths captured in light-traps were monitored in Luohe, central-northern China, from 1980 to 2016. Annual average temperature recorded an increase of 0.298 oC/10 years in this region in the period. Our results indicate that a rising Apr and May avarage temprature and earlier occurrences of days recording the highest day temperature (30℃) caused an advanced peak and increasing proportion of high ovarian development levels of first generation females in earlier summers. Results using Johnson's formulation of 'oogenesis-flight syndrome' indicate that increasing sexual maturity proportion has resulted in more emigrant individuals in the local first generaton moth becoming residents, and then increased individuls repidly in the local second generation moth since 2006. Consequences of this action have a boom in corn damage since 2007 in this region. Advanced peak dates of the first and second generation moth revealed the same response to increasing average monthly temperatures in the monitoring period. Increasing temperatures, the avarage May temperature exceeds or equal to 22℃, during the early 2000's may represent a physiological threshold for M. separata development. Our results suggest that climate warming may impact M. separata migratory status and cause a problem of crop production in this region.
The host-feeding choice of early-instar Mythimna separata larvae can be regulated by female-released sex pheromone
<p>Insect<strong> </strong>sex pheromones are important chemical signals in sexual communication, they are traditionally thought to be inactive to larvae. However, it was found that some lepidopteran larvae can be significantly attracted by sex pheromones of the same species in a food context. Here we reported that the host-feeding choice of early-instar <em>Mythimna separata</em> larvae can be effectively regulated by the sex pheromone component (<em>Z</em>)-11-hexadecenal (<em>Z</em>11-16: Ald). Further exploration revealed that two olfactory proteins, <em>M. separata</em> general odorant binding protein 2 (MsGOBP2) and olfactory receptor 3 (MsOR3), were molecular basis of the host-feeding choice regulation mediated by <em>Z</em>11-16: Ald. Silencing either <em>MsGOBP2</em> or <em>MsOR3 </em>led to a sharply reduced preference for <em>Z</em>11-16: Ald-spiked hosts. It is possible that the <em>Z</em>11-16: Ald-based preference of the <em>M. separata</em> larvae for host is governed by the interplay between MsGOBP2 and MsOR3. In the present research, the interactions between MsGOBP2 and <em>Z</em>11-16: Ald were also discussed using molecular dynamics-based approaches. Our research explored insight into the <em>Z</em>11-16: Ald-mediated host-feeding choice regulation of <em>M. separata</em> larvae, all the results would aid in developing olfaction-based methods for controlling pests in larval stage.</p>
Data from: The effects of climate warming on the migratory status of early summer populations of Mythimna separata(Walker) moths: a case-study of enhanced corn damage in central-northern China, 1980 - 2016
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Figure 10 in Revision of the species of Mythimna Ochsenheimer, 1816 (Pseudaletia Franclemont, 1951) (Lepidoptera: Noctuidae: Noctuinae: Leucaniini) occurring in Brazil
Figure 10 Mythimna (P.) sequax. a-b: male (DZ 39.925) in dorsal and ventral views; c-d: female (DZ 39.926) in dorsal and ventral views. Specimen deposited at the DZUP. Scale bar = 1cm.
Figure 4 in Revision of the species of Mythimna Ochsenheimer, 1816 (Pseudaletia Franclemont, 1951) (Lepidoptera: Noctuidae: Noctuinae: Leucaniini) occurring in Brazil
Figure 4 Molecular phylogenetic analysis through the method of maximum likelihood (original tree). The tree with the highest log probability (-1360.63) is shown. The percentage of trees in which the grouped associated taxa is shown beside the ramifications.
Figure 6 in Revision of the species of Mythimna Ochsenheimer, 1816 (Pseudaletia Franclemont, 1951) (Lepidoptera: Noctuidae: Noctuinae: Leucaniini) occurring in Brazil
Figure 6 Mythimna (Pseudaletia) unipuncta. a: female in dorsal view. Scale bar = 1cm. b: female genitalia in ventral view. Specimen identified as Leucania antica at the NHMUK 010915614. There is no scale of the genitalia.
Figure 8 in Revision of the species of Mythimna Ochsenheimer, 1816 (Pseudaletia Franclemont, 1951) (Lepidoptera: Noctuidae: Noctuinae: Leucaniini) occurring in Brazil
Figure 8 Mythimna (Pseudaletia) adultera. a-b, male in dorsal and ventral views; c-d, female in dorsal and ventral views. Specimen deposited at the DZUP. Scale bar = 1cm.
Figure 5 in Revision of the species of Mythimna Ochsenheimer, 1816 (Pseudaletia Franclemont, 1951) (Lepidoptera: Noctuidae: Noctuinae: Leucaniini) occurring in Brazil
Figure 5 Mythimna (Pseudaletia) unipuncta. a - male lectotype in dorsal view. Scale bar = 1cm. b: male genitalia in posterior view with aedeagus in lateral view. Specimen from NHMUK 010354729. There is no scale in the genitalia.
Figure 2 in Revision of the species of Mythimna Ochsenheimer, 1816 (Pseudaletia Franclemont, 1951) (Lepidoptera: Noctuidae: Noctuinae: Leucaniini) occurring in Brazil
Figure 2 Geographic distribution of Mythimna (Pseudaletia) in Brazil.
Figure 10 in On the distribution of Mythimna phlebitis (Püngeler) in Kazakhstan (Lepidoptera: Noctuidae: Noctuinae: Leucanini)
Figure 10. Distribution map of Mythimna phlebitis.
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