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11 results for “Bactrocera tryoni”
F I G U R E 2 in Female-female aggression in Bactrocera tryoni (Diptera: Tephritidae) and the influence of fruit quality on combat intensity
F I G U R E 2 Mean (±SE) time (in seconds) taken for a female Bactrocera tryoni to perform the first antagonistic behavioural event against a conspecific female when on one of three host fruit types. N = 15 female pairs per fruit type. Columns surmounted by different letters are significantly different at p = 0.05.
F I G U R E 1 in Female-female aggression in Bactrocera tryoni (Diptera: Tephritidae) and the influence of fruit quality on combat intensity
F I G U R E 1 Ethogram of antagonistic behaviours of female Bactrocera tryoni competing for a single host fruit. The size of the behavioural boxes and number within represent the frequency in which the individual behaviours occurred that led to a transitional flow to another behaviour. The number associated with the arrow represents the proportion of transition frequencies made by the females to other behaviours from a given behaviour and will sum to 1. For example, from a total number of observed behavioural events recorded for crabbing, a proportion of 0.381 of all transitions led to further crabbing (after the first crabbing had finished), 0.237 led to supination, 0.130 led to pushing, 0.091 led to tiptoe, 0.083 led to probing, 0.033 led to butting, 0.032 led to retreat and 0.014 led to chasing. The ethogram is based on 45 replicate recordings, each 1 h long of two sexually mature females competing for access to a single fruit resource for oviposition. The ethogram thus represents the combined behaviours of 90 individuals.
F I G U R E 4 in Female-female aggression in Bactrocera tryoni (Diptera: Tephritidae) and the influence of fruit quality on combat intensity
F I G U R E 4 Mean (±1 SE) number of occurrences of aggressive behaviours exhibited by Bactrocera tryoni females on three fruit types: cherry tomato, apple and mango. N = 15 replicate female–female pairs per fruit type. Columns surmounted by different letters are significantly different at p = 0.05.
F I G U R E 3 in Female-female aggression in Bactrocera tryoni (Diptera: Tephritidae) and the influence of fruit quality on combat intensity
F I G U R E 3 Mean (±1 SE) number of antagonistic events carried out by Bactrocera tryoni females against conspecific females when on one of three host fruit types. N = 15 female pairs per fruit type. Columns surmounted by different letters are significantly different at p = 0.05.
Gene expression responses of Bactrocera tryoni larvae feeding on different ripening stages of tomato fruit
<p><em>Bactrocera tryoni </em>larvae rearing in immature-green, color-break, and fully-ripe tomato fruit's RSEM, DGE, Trinity Fasta file, Trinity Fasta gene to transcript map, and Trinotate annotation report data. </p>
Data for: Genomic signals of local adaptation across climatically heterogenous habitats in an invasive tropical fruit fly (Bactrocera tryoni)
<p class="MsoNormal"><span>Local</span> <span>adaptation</span> plays a key role in the successful establishment of pest populations in new environments by enabling them to tolerate novel biotic and abiotic conditions experienced outside their native range. However, the <span>genomic underpinnings of such adaptive responses</span> remain unclear, especially for agriculturally important pests. We investigate<span>d</span> <span>population </span>genomic signatures in the tropical/subtropical Queensland fruit fly, <em>Bactrocera tryoni</em>, which has <span>an </span>expanded range <span>encompassing</span> temperate and arid zones in Australia, <span>and</span> tropical <span>zones in the Pacific Islands</span>. Using reduced representation sequencing data from 28 populations, we detected allele frequency shifts associated with the <span>native/invasive </span>status of populations and <span>identified</span> environmental factors that <span>have likely </span>drive<span>n</span> population differentiation. We also determined that precipitation, temperature<span>,</span> and geographic variables explain allelic shifts across the distribution range of <em>B. tryoni</em>. <span>We found</span> spatial heterogeneity in signatures of local adaptation across various climatic conditions in invaded areas. Specifically, disjunct invasive populations in the tropical <span>Pacific Islands</span> and arid zones of Australia <span>were characterised by</span> multiple significantly differentiated single nucleotide polymorphisms (SNPs), some of which were associated with genes with well-understood function in environmental stress (e.g., heat and desiccation) response. However, invasive populations in southeast Australian temperate zones show<span>ed</span> higher gene flow with the native range <span>and </span>lacked a strong local <span>adaptive signal</span>. These results suggest that population connectivity with the native range has <span>differentially </span>affect<span>ed</span> <span>local adaptive patterns in different</span> invasive populations. Overall, our findings provide insights into the evolutionary underpinnings of invasion success of an important horticultural pest in climatically distinct environments.</p>
Data for: Genomic signals of local adaptation across climatically heterogenous habitats in an invasive tropical fruit fly (Bactrocera tryoni)
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Effect of tomato-fruit cultivar and ripening stage on Bactrocera tryoni (Froggatt) egg and larval survival
<p>In studies of frugivorous tephritids, determining when offspring (i.e. egg and three larval instars) mortality occurs within the fruit can greatly improve the mechanistic understanding of the fly/host interaction. Previous research has demonstrated that the Queensland fruit fly, <i>Bactrocera tryoni</i>, has differential offspring performance in two tomato cultivars Cherry and Roma, but when juvenile mortality was occurring was not determined. We examined <i>B. tryoni </i>egg and larval survival in three different ripening stages (immature-green (IG), colour-break (CB) and fully-ripe (FR)) of Cherry and Roma tomato cultivars through destructive fruit sampling at 72 and 120 hrs for eggs, and 48 (1<sup>st</sup> instar), 96 (2<sup>nd</sup> instar) and 120 hours (3<sup>rd</sup> instar) after fruit inoculation with neonates for larvae. Cultivar and ripening stage had no significant effect on egg survival, nor larval survival at 48 hrs: egg survival was high across all treatments, while 1<sup>st</sup> instar larval was low across all treatments. At 96 and 120 hrs, there were significant cultivar and ripening stage impacts on larval survival. In fully-ripe fruit, no further significant mortality happened after the first instar. However, in colour-break fruit, after the initial 1<sup>st</sup> instar mortality, high mortality also occurred in third instar larvae. In immature-green fruits nearly all mortality occurred during the first and second instars. The difference in timing of larval mortality with ripening stage provides indirect evidence of active fruit defense which is strongest in immature-green fruit, less in colour-break fruit and absent in fully-ripe fruit. Increased knowledge of fruit defenses against fruit flies is a starting point for developing fruit fly resistant crops.</p>
Effect of tomato-fruit cultivar and ripening stage on Bactrocera tryoni (Froggatt) egg and larval survival
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Data from: "Transcriptome sequencing of the Queensland fruit fly, Bactrocera tryoni (Diptera: Tephritidae)" in Genomic Resources Notes accepted 1 December 2013 to 31 January 2014
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Data from: "Transcriptome sequencing of the Queensland fruit fly, Bactrocera tryoni (Diptera: Tephritidae)" in Genomic Resources Notes accepted 1 December 2013 to 31 January 2014
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