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329 results for “Bactrocera”
Fig. 6 in The Taxonomy And Phylogenetic Relationships Of Species In The Bactrocera Musae Complex Of Fruit Flies (Diptera: Tephritidae: Dacinae) In Papua New Guinea
Fig. 6. Neighbour joining tree showing relationships between CO1 haplotypes from species in the Bactrocera musae complex. Values at nodes are for 1000 bootstrap replicates of the maximum likelihood calculations using the Kimura two-parameter model of sequence evolution (left) and Bayesian posterior probability (right). Clade A = B. musae, Clade B = B. rufivitta, Clade C = B. contermina. Note: the numbers at the branch tips represent the field collection codes given to individual specimens.
Fig. 7 in The Taxonomy And Phylogenetic Relationships Of Species In The Bactrocera Musae Complex Of Fruit Flies (Diptera: Tephritidae: Dacinae) In Papua New Guinea
Fig. 7. Diagram showing clustering of individuals at (A) the highest hierarchical level of structuring in the Bactrocera musae complex using STRUCTURE, and (B) the sub-group structuring into two further clusters of the individuals from the red cluster in A. Vertical bars represent individuals and colours denote the proportion of ancestry from each cluster based on eight microsatellite loci. Note at the highest level (A), individuals are clearly assigned to either the B. musae or the 'others' cluster. At the next level (B), individuals from the 'others' cluster are assigned to either the B. rufivitta cluster (red) or the B. contermina cluster (green). Note: The numbers below the vertical bars represent the field collection codes given to individual specimens.
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 3 in Oviposition by the oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), on five citrus types in a laboratory
F I G U R E 3 Mean (±1 SE) proportion of time female Bactrocera dorsalis spent on aggression, grooming, oviposition, probing, being inactive, and walking and tasting on (a) damaged and (b) undamaged citrus types and a positive control (Golden Delicious apple). Citrus types investigated were Golden Delicious apple, Delta Valencia orange, Eureka lemon, Glen Ora navel orange, Nadorcott mandarin and Star Ruby grapefruit. Each female was observed for 20 min.
F I G U R E 2 in Oviposition by the oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), on five citrus types in a laboratory
F I G U R E 2 First-order Markovian analyses showing the probability of transition from one behaviour to another by gravid female Bactrocera dorsalis on (a) damaged and (b) undamaged citrus (all types pooled). Transitions with p ≥ 0.10 are indicated by solid lines, and those with 0.09 ≥ p ≥ 0.03 are indicated by dashed lines. Values in parentheses indicate frequencies of each behaviour observed.
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 1 in Oviposition by the oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), on five citrus types in a laboratory
F I G U R E 1 Non-metric multidimensional scaling (NMDS) ordination plot showing the relative similarity of essential oil composition of different citrus types and degrees of ripeness. Ellipses represent 95% confidence intervals. The treatments tested were degrees of ripeness denoted as Green, Colour Break, Ripe or Over Ripe and were tested on variants Eureka lemon, Nadorcott mandarin, Glen Ora Late navel orange, Delta Valencia orange and Star Ruby grapefruit.
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.
Figure 1 in Ability of Sterile Males to Inhibit Female Remating in the Oriental Fruit Fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae)
Figure 1. Numbers of rematings observed per cage for females first mated to fertile wild or sterile DTWP males at 3 intervals after the initial mating. Each cage held 10 test females. Symbols represent mean values + 1 SE; N = 8 in all cases.
Figure 7 in From Eradication to Containment: Invasion of French Polynesia by Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) and Releases of Two Natural Enemies: A 17-Year Case Study
Figure 7. Annual percentage of individual guavas infested with fruit flies on Tahiti. Number of fruits incubated individually each year were: 172 in 2002, 348 in 2003, 539 in 2004, 607 in 2005, 98 in 2006, 4 in 2007, 237 in 2008, and 807 in 2009.
Figure 6a–d in From Eradication to Containment: Invasion of French Polynesia by Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) and Releases of Two Natural Enemies: A 17-Year Case Study
Figure 6a–d. Quarterly emergences on Tahiti of B. dorsalis and F. arisanus per kg fruit for guava (a), Tahitian chestnut (b), tropical almond (c), and mango (d). See under
Figure 4 in From Eradication to Containment: Invasion of French Polynesia by Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) and Releases of Two Natural Enemies: A 17-Year Case Study
Figure 4. Annual proportion of fruit fly (B. dorsalis, B. tryoni, B. kirki) and parasitoid (F. arisanus, D. longicaudata) emergences in guava, tropical almond, Tahitian chestnut, and mango fruits for selected years.
Figure 3a, b in From Eradication to Containment: Invasion of French Polynesia by Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) and Releases of Two Natural Enemies: A 17-Year Case Study
Figure 3a, b. Coconut husk block (a) and BactroMAT-ME (b) bait stations used for eradication of B. dorsalis. (Photos: L. Leblanc).
Figure 1 in From Eradication to Containment: Invasion of French Polynesia by Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) and Releases of Two Natural Enemies: A 17-Year Case Study
Figure 1. Monthly captures of B. dorsalis in methyl eugenol traps and quarterly percent parasitism on guava, Tahitian chestnut and tropical almond on Tahiti.
Figure 2 in Mark-Release-Recapture Experiments on the Effectiveness of Methyl Eugenol-Spinosad Male Annihilation Technique Against an Invading Population of Bactrocera dorsalis
Figure 2. Visual representation of the MAT-ME saturation hypothesis. Darker areas represent higher concentrations of attractant odor in the air column, represented from above. (A) A single sentinel trap baited with 6 ml of methyl eugenol under control conditions. A release of males around the center of the area would lead some of the males to find the plume and successfully follow it to the trap for capture. (B) A single sentinel trap with some MAT-ME spots (low rate). More attractant is available, but gradients to point sources are still clear; note that the MAT-ME spots have a lower overall concentration at the source. (C) A single sentinel trap with a high density of MAT-ME spots. A haze of attractant exists, making gradients shorter. The sentinel trap is still about as effective as before due to higher final concentration, but the less concentrated MAT-ME spots are harder to find.
Figure 2 in Field Capture of Male Melon Flies, Bactrocera cucurbitae (Coquillett), in Jackson Traps Baited with Cue-Lure Versus Raspberry Ketone Formate in Hawaii
Figure 2. Number of B. cucurbitae males captured in Jackson traps baited with cue-lure (CL) liquid (●) versus raspberry ketone formate (RKF) liquid (○) at four study sites on Oahu, Hawaii. At each site, 15 traps of each treatment were operated 1 day per week over 6 consecutive weeks. Symbols represent means (+ 1 SE, n = 15).
Figure 5a–d in From Eradication to Containment: Invasion of French Polynesia by Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) and Releases of Two Natural Enemies: A 17-Year Case Study
Figure 5a–d. Quarterly emergences on Tahiti of B. dorsalis and F. arisanus per fruit for guava (a), Tahitian chestnut (b), tropical almond (c), and mango (d). Numbers of fruits used for each host and each year (for guava, Tahitian chestnut, tropical almond and mango, respectively) were: 1998: 1634, 16238, 5314, 67; 1999: 264, 304, 993, 404; 2000: 37, 40, 154, 64; 2001: 52, 0, 20, 74; 2002: 492, 1204, 474, 268; 2003: 1531, 1539, 2685, 977; 2004: 2252, 1324, 810, 291; 2005: 1071, 904, 4373, 436; 2006: 1927, 3343, 3140, 1044; 2007: 1537, 1525, 4200, 1814; 2008: 3255, 2648, 5045, 2052; 2009: 1515, 1972, 5475, 549.
Figure 1 in Field Capture of Male Melon Flies, Bactrocera cucurbitae (Coquillett), in Jackson Traps Baited with Cue-Lure Versus Raspberry Ketone Formate in Hawaii
Figure 1. Number of B. cucurbitae males captured in Jackson traps baited with cue-lure (CL) liquid (●) versus raspberry ketone formate (RKF) plugs (○) at four study sites on Oahu, Hawaii. At each site, 15 traps of each treatment were operated 1 day per week over 6 consecutive weeks. Symbols represent means (+ 1 SE, n = 15).
Figure 1 in Mark-Release-Recapture Experiments on the Effectiveness of Methyl Eugenol-Spinosad Male Annihilation Technique Against an Invading Population of Bactrocera dorsalis
Figure 1. Mean proportion recaptured by treatment. Whiskers indicate standard errors. Letters indicate statistically significant differences at α = 0.05 via two-sample z-test (see text for details)
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