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24 results for “Aphis gossypii”
Figure 1 in Host instars preference, density-dependent parasitism and behavioral perspective of parasitoids (Aphidius colemani, Aphidius matricariae and Aphelinus abdominalis) in Aphis glycines and Aphis gossypii
Figure 1: Comparison of parasitoids (Ad.colemani, Ad.matricariae and Al.abdominalis) on different ages (nymphal instars) of the(A) As.glycines (n= 30) and (B) As. gossypii (n= 30).
No evidence of bacterial symbionts influencing host specificity in Aphis gossypii Glover (Hemiptera: Aphididae)
<p class="MDPI17abstract"><span>The cotton-melon aphid, <em>Aphis gossypii</em> Glover, is a polyphagous insect pest with many host-specialized biotypes, such as Cucurbitaceae- and Malvaceae-specialized (CU and MA) biotype. Bacterial symbionts were reported to determine host range in some aphids. Whether this is the case in<em> A. gossypii</em> remains unknown. Here, we tested host specificity of CU and MA biotype and compared host specificity between wingless and winged morph within the same biotype, and analyzed the composition of bacterial symbionts. The reproduction of CU and MA biotype reduced by 66.67% and 82.79% </span><span>res</span><span>pectively on non-native hosts, compared with that on native hosts. The composition of bacterial symbionts was not significantly different between CU and MA biotype, with <em>Buchnera</em> abundance >95% in both biotypes. While, winged morph produced significantly more nymphs than wingless morph on non-native hosts, and<a name="OLE_LINK1"></a> <em>Buchnera</em> abundance in winged morph was only about 10% of that in wingless morph. There seemed to be a relationship between <em>Buchnera</em> abundance and host specificity. We regulated <em>Buchnera</em> abundance by temperature and antibiotics, but did not find that low <em>Buchnera</em> abundance resulted in high reproduction on non-native hosts. We conclude that host specificity of <em>A. gossypii</em> is not controlled by specific bacterial symbionts or by <em>Buchnera</em> abundance.</span></p>
Fig. 1 in Influence of okra (Abelmoschus spp.) accessions on colonization by Aphis gossypii (Hemiptera: Aphididae) and their effects on aphid biological parameters
Fig. 1.:attern of climatic factors for the bimodal warm, humid forest of Yaoundé.
No evidence of bacterial symbionts influencing host specificity in Aphis gossypii Glover (Hemiptera: Aphididae)
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Data from: Genetic diversity of melon aphids Aphis gossypii associated with landscape features
Despite increasing evidence that landscape features strongly influence the abundance and dispersal of insect populations, landscape composition has seldom been explicitly linked to genetic structure. We conducted a genetic study of the melon aphid, Aphis gossypii, in two counties of Beijing, China during spring migration using samples from watermelon. We performed aphid genetic analysis using restriction-site-associated DNA-sequencing (2b-RAD) and investigated the relationship between land cover and the genetic diversity. The percentage area of land cover (cropland, vegetable, orchard, grassland, woodland) was quantified in each particular scale (ranging from 0.5 km to 3 km) and was used as a predictor variable in our generalized linear models. We found a moderate level of genetic differentiation among 9 sampled populations. Geographic distance and genetic distance were not significantly associated, indicating that geographic location was not a barrier to migration. These 9 populations could be clustered depending on their level of genetic diversity (high and low). The genetic diversity (Shannon's information index) was positively correlated with grassland at the spatial scales of 1 and 2 km and negatively with orchard and vegetable at 0.5 and 1 km. Genetic diversity was best predicted by the grassland + orchard + vegetable model at a spatial scale of 1 km. Based on the method of relative weights, orchard land had the greatest relative importance, followed by grassland and vegetable land, in that order. This study contributes to our understanding of the genetic variation of aphids in agricultural landscapes.
Supplementary material 1 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Table S1. Collection information.: Explanation note: Collection information for specimens included in this study. INHS voucher and GenBank accession numbers are for specimens originating from a specific collection.
Supplementary material 2 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Table S2. Morphological characters useful to discriminate Aphid gossypii, Aphid monardae, Aphid oestlundi and Aphid sedi.: Explanation note: Morphological characters useful to discriminate Aphid gossypii, Aphid monardae, Aphid oestlundi and Aphid sedi. For all measurements and counts the range is given and the mean is in parentheses. All measurements in mm. Abbreviations: B base of last antennal segment, CA cauda, DBIII: Distance from the base of antennal segment III to the first secondary sensorium, HT2 second hind tarsus, LHIII longest Hair on ant. segm. III, PT: Processus terminalis, SIPH siphunculi, URS ultimate rostral segment. Data of oviparae of Aphid gossypii from Kim et al. (2010a).
Selection and characterization of Beauveria bassiana isolates highly thermotolerant and toxic against Aphis gossypii (Hemiptera: Aphididae)
<p>these raw data are supporting the results of the paper entiled "<strong>Selection and characterization of <em>Beauveria bassiana </em>isolates highly thermotolerant and toxic against <em>Aphis gossypii</em> (Hemiptera: Aphididae)"</strong></p>
Data from: Genetic diversity of melon aphids Aphis gossypii associated with landscape features
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Data from:Insight into the durability of plant resistance to aphids from a demo-genetic study of Aphis gossypii in melon crops
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Figure 2 in Host instars preference, density-dependent parasitism and behavioral perspective of parasitoids (Aphidius colemani, Aphidius matricariae and Aphelinus abdominalis) in Aphis glycines and Aphis gossypii
Figure 2: Parasitism percentage of parasitoids (Ad. colemani, Ad. matricariae and Al. abdominalis) on different host instars of (A) As. glycines (n= 30) and (B) As. gossypii (n= 30).
Figure 4 in Host instars preference, density-dependent parasitism and behavioral perspective of parasitoids (Aphidius colemani, Aphidius matricariae and Aphelinus abdominalis) in Aphis glycines and Aphis gossypii
Figure 4: Parasitism percentage of parasitoids (Ad. colemani, Ad. matricariae and Al. abdominalis) at different host density levels of (A) As. glycines and (B) As. gossypii. C1 (1:1) Control, C2 (10:1), C3 (50:5), C4 (100:10), C5 (200:20).
Figure 3 in Host instars preference, density-dependent parasitism and behavioral perspective of parasitoids (Aphidius colemani, Aphidius matricariae and Aphelinus abdominalis) in Aphis glycines and Aphis gossypii
Figure 3: Comparison of parasitism of parasitoids (Ad. colemani, Ad. matricariae and Al. abdominalis) on different host density levels of (A) As. glycines and (B) As. gossypii. C1 (1:1) Control, C2 (10:1), C3 (50:5), C4 (100:10), C5 (200:20).
Figure 7 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Figure 7 - Body of alate viviparae. A Aphid glycines B Aphid gossypii C Aphid gossypii D Aphid sedi E Aphid monardae F Aphid nasturtii G Aphid oestlundi.
Figure 8 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Figure 8 - Aphis species of the Aphid gossypii complex. A Apterous vivipara of Aphid gossypii on Rhamnus cathartica B Nymphs, apterous and alate viviparae of Aphid monardae on Monarda fistulosa C Apterous ovipara of Aphid monardae D Nymphs and apterous male (brownish in the center of the image) of Aphid monardae E Nymphs and alate vivipara of Aphid gossypii on Cucurbita pepo F Nymphs and apterous vivipara of and Aphid oestlundi on Oenothera biennis G Apterous vivipara (top) and apterous ovipara (bottom) of Aphid sedi on Hylotelephium telephium.
Figure 6 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Figure 6 - Antennal segments (II-VI) of alate viviparae A Aphid glycines B Aphid gossypii C Aphid monardae, showing distance from the base of antennal segment III to the first secondary sensorium, DBIII D Aphid nasturtii E Aphid oestlundi F Aphid sedi.
Figure 3 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Figure 3 - Inferred relationships using the SCP gene based on analysis with MrBayes. Support values (Posterior Probabilities) are below branches. Species names are followed by the collection locality (USA) and number of haplotypes.
Figure 5 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Figure 5 - Analysis of variance of morphological characters useful to discriminate Aphid gossypii, Aphid monardae, and Aphid sedi. The gray line represents the median. The gray diamond represents the means and standard deviation. A 95% level indicates a significant difference. A distance from the base of antennal segment III to the first secondary sensorium (DBIII) between Aphid gossypii and Aphid monardae B ratio of length of processus terminalis (PT) to the base of last antennal segment B between Aphid gossypii and Aphid sedi C ratio of length of siphunculi (SIPH) to the length of cauda (CA) between Aphid gossypii and Aphid sedi.
Figure 4 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Figure 4 - Habitus images of slide-mounted sexual morphs of A ovipara of Aphid monardae B male of Aphid monardae C ovipara of Aphid sedi, and apterous viviparae of D Aphid gossypii E Aphid gossypii F Aphid gossypii G Aphid sedi H Aphid glycines I Aphid monardae J Aphid nasturtii K Aphid oestlundi.
Figure 2 from: Lagos-Kutz D, Favret C, Giordano R, Voegtlin D (2014) Molecular and morphological differentiation between Aphis gossypii Glover (Hemiptera, Aphididae) and related species, with particular reference to the North American Midwest. ZooKeys 459: 49-72. https://doi.org/10.3897/zookeys.459.7850
Figure 2 - Cladogram inferred based on analysis of EF1-α with MrBayes. Support values (Posterior Probabilities) are below branches. Values under 0.95 are not presented. Species names are followed by collection locality, number of haplotypes and genus of host plant.
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