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27 results for “Sitophilus”
Comparative Study of Entomotoxicity of Three Medicinal Plant Extracts against Sitophilus oryzae
<p>The Sitophilus oryzae is the most widespread and destructive primary stored cereals and grain pest in the world. The major effect of Sitophilus oryzae on an infestation by the feeding activity of grubs and adults and increasing the secondary growth of pests by making conditions optimum for optimum and further infestation. Plant extracts Azadirachta indica, Osmium Sanctum, and Mentha piperita were evaluated for Entomotoxicity such as repellency, adulticidal and larvicidal effect against Sitophilus oryzae. The Entomotoxicity of plant extracts expressed in percentage and Repellency were also expressed in class repellency with class 1, class 2, Class 3, Class 4, and class 5.TheRepellency with 80% of Class 4, Adulticidaland larvicidal percentage with 100 % of Azadirachta Indica and Adulticidal highest Entomotoxicity effect than Osmium sanctum and Mentha piperita</p>
Fig. 2 in Resistance of rice varieties to Sitophilus oryzae (Coleoptera: Curculionidae)
Fig. 2. Correlaton between the percentage of grains with fissures in the shell and mass of grain consumed by Sitophilus oryzae (Coleoptera: Curculionidae) in 22 rice varietes. 1-Aimoré; 2-Araguaia; 3-BonanÇa; 4-CabaÇu; 5-Caripuna; 6-Carisma; 7-Centro América; 8-ConfianÇa; 9-Curinga; 10-Esmeralda; 11-IRGA 22; 12-Monarca; 13-Pepita; 14-Progresso; 15-Rio Paraguai; 16-Rio Paranaíba; 17-Rio Verde; 18-Sertaneja; 19-Soberana; 20-Tangará; 21-Vencedora; 22-Xingu.
Fig. 1 in Resistance of rice varieties to Sitophilus oryzae (Coleoptera: Curculionidae)
Fig. 1. Preference index of feeding by Sitophilus oryzae (Coleoptera: Curculionidae) on 22 rice varietes.
Figure 3 in Insecticidal effect of diatomaceous earth and dolomite powder against Corn weevil Sitophilus zeamais Motschulsky, 1855 (Coleoptera: Curculionidae)
Figure 3. Pictures of Sitophilus zeamais control taken by scanning electron microscopy (SEM). A. Dorsal view: trichoid sensilla (Se), sensilla (S), antenna (A), rostrum (R), elytrum (E). Bar = 500 µm. B. Rostrum and antenna: trichoid sensilla (Se), sensilla (S). Bar = 100 µm. C. Antenna: trichoid sensilla (Se). Bar = 20 µm. D. Elytrum: sensilla (S), suture (Su). Bar = 20 µm. E. Elytrum: sensilla (S), suture (Su). Bar = 50 µm. F. Abdomen, ventral view: sensilla (S). Bar = 10 µm.
Figure 2 in Insecticidal effect of diatomaceous earth and dolomite powder against Corn weevil Sitophilus zeamais Motschulsky, 1855 (Coleoptera: Curculionidae)
Figure 2. Mortality at different concentrations (mg) of diatomaceous earth and dolomite powder used for control of Sitophilus zeamais Motschulsky, 1855 (Coleoptera: Curculionidae), after different exposure times. DE:Diatomaceous earth and DOL: Dolomite powder.
Figure 5 in Insecticidal effect of diatomaceous earth and dolomite powder against Corn weevil Sitophilus zeamais Motschulsky, 1855 (Coleoptera: Curculionidae)
Figure 5. Pictures of Sitophilus zeamais exposed to inert dusts taken by scanning electron microscopy (SEM). A. Elytrum (E) of insect exposed to diatomaceous earth: sensilla (S), suture (Su). Bar = 200 µm. B. Elytrum (E) of insect exposed to dolomite powder: sensilla (S), suture (Su). Barra = 20 µm. C. Leg of insect exposed to dolomite powder: sensilla (S). Bar = 100 µm. D. Claw of insect exposed to dolomite powder. Bar = 50 µm.
Fig. 3 in Characterization of sounds in maize produced by internally feeding insects: investigations to develop inexpensive devices for detection of Prostephanus truncatus (Coleoptera: Bostrichidae) and Sitophilus zeamais (Coleoptera: Curculionidae) in small-scale storage facilities in sub-Saharan Africa
Fig. 3. Effects of distance on detectability of larval sound impulses. Horizontal axis indicates the mean distance between the larval pouch and the sensor; vertical axis indicates the log10-transformed mean rate of impulses detected at that distance. Bars indicate the standard error of mean transformed rate.
Fig. 1 in Characterization of sounds in maize produced by internally feeding insects: investigations to develop inexpensive devices for detection of Prostephanus truncatus (Coleoptera: Bostrichidae) and Sitophilus zeamais (Coleoptera: Curculionidae) in small-scale storage facilities in sub-Saharan Africa
Fig. 1. Spectral profiles of 4 distinctive types of larval sound impulses detected in cracked corn: HaNb, solid line; Ma, dashed line, Ha, dash-dot-dotted line, and La, dotted line. Horizontal axis indicates frequency in kHz and vertical axis indicates relative spectrum amplitude in dB.
Fig. 2 in Characterization of sounds in maize produced by internally feeding insects: investigations to develop inexpensive devices for detection of Prostephanus truncatus (Coleoptera: Bostrichidae) and Sitophilus zeamais (Coleoptera: Curculionidae) in small-scale storage facilities in sub-Saharan Africa
Fig. 2. Oscillogram of sound impulses recorded 10 cm from pouch containing Sitophilus oryzae larvae. Examples of 3 types of larval sound impulse occur during the 1 s period, and one example each of type (Ha, La, and HaNb) is marked above the impulse. Horizontal axis indicates time in seconds and vertical axis indicates relative signal amplitude.
Figure 2 in First record of Sitophilus linearis (Herbst, 1795) (Coleoptera: Curculionidae) from East African copal
Figure 2. Sitophilus linearis, East African copal: a – rostrum, head and prosternum, ventral view; b – metaventrite and abdomen, ventral view.
Figure 1 in First record of Sitophilus linearis (Herbst, 1795) (Coleoptera: Curculionidae) from East African copal
Figure 1. Sitophilus linearis, habitus, East African copal: a – ventro-lateral view, right; b – lateral view, left; c – dorsal view.
Fig. 1 in Attraction of Sitophilus zeamais (Coleoptera: Curculionidae) to four host plants
Fig. 1. Weevils reared on corn, barley, brown rice, and milo, and presented a choice of 4 host plants. (a) Mean (SE) number of S. zeamais located on maize, oat, rice, and milo plants; (b) mean (SE) number of S. zeamais located on the soil surrounding maize, oat, rice, and milo plants; (c) mean (SE) number of S. zeamais located on the roots of maize, oat, rice, and milo plants. Means with the same letter are not significantly different.
Figure 3 in First record of Sitophilus linearis (Herbst, 1795) (Coleoptera: Curculionidae) from East African copal
Figure 3. Copal piece.
Collection and ddRadSeq sequencing data for Sitophilus zeamais from Oaxaca and Chiapas, Mexico
<p>The maize weevil, <em>Sitophilus zeamais</em>, is a ubiquitous pest of maize and other cereal crops worldwide and remains a threat to food security in subsistence communities. Few population genetic studies have been conducted on the maize weevil, but those that exist have shown that there is very little genetic differentiation between geographically dispersed populations and that it is likely the species has experienced a recent range expansion within the last few hundred years. While the previous studies found little genetic structure, they relied primarily on mitochondrial and nuclear microsatellite markers for their analyses. It is possible that more fine-scaled population genetic structure exists due to local adaptation, the biological limits of natural species dispersal, and the isolated nature of subsistence farming communities. In contrast to previous studies, here, we utilized genome-wide single nucleotide polymorphism data to evaluate the genetic population structure of the maize weevil from the southern and coastal Mexican states of Oaxaca and Chiapas. We employed strict SNP filtering to manage large next generation sequencing lane effects and this study is the first to find fine-scale genetic population structure in the maize weevil. Here, we show that although there continues to be gene flow between populations of maize weevil, that fine-scale genetic structure exists. It is possible that this structure is shaped by local adaptation of the insects, the movement and trade of maize by humans in the region, geographic barriers to gene flow, or a combination of these factors.</p>
Collection and ddRadSeq sequencing data for Sitophilus zeamais from Oaxaca and Chiapas, Mexico
Open the record for dataset details and reuse information.
ddRadSeq sequences for Sitophilus zeamais
<p>ddRadSeq Illumina Sequencing data for maize weevil, <em>Sitophilus zeamais</em></p>
Transposable element annotation of Sitophilus oryzae
<p>Sitophilus oryzae TE annotation (GFF), and consensus sequences (fasta).</p>
Figs. 3–4 in Sensilla on the Antennal Funiculus of the Maize Weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae): A Morphological Investigation
Figs. 3–4. Antenna of Sitophilus zeamais, sensory cluster on the apex of the apical flagellar antennomere. 3) Sensilla chaetica (arrows); 4) Sensilla basiconica subtypes SB1 and SB2 (Y type).
Fig. 2 in Sensilla on the Antennal Funiculus of the Maize Weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae): A Morphological Investigation
Fig. 2. Antenna of Sitophilus zeamais. a) Sensilla squamiformia (arrows) on the terminal flagellomere, b) Sensilla squamiformia on all antennomeres (arrows), c) Two sensilla squamiformia.
Fig. 1 in Sensilla on the Antennal Funiculus of the Maize Weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae): A Morphological Investigation
Fig. 1. Antenna of Sitophilus zeamais with eight antennomeres. Arrow on the far right indicates the cluster of terminal sensilla on the club.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.