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91 results for “Baited trap”
Lure, retain, and catch malaria mosquitoes. How heat and humidity improve odour-baited trap performance
<p><b>Background:</b> When seeking a human for a blood meal, mosquitoes use several cues to detect and find their hosts. From this knowledge, counter-flow odour-baited traps have been developed that use a combination of CO<sub>2</sub>, odour-blend, visual cues and circulating airflow to attract and capture mosquitoes. Initially developed for monitoring, these traps are now also being considered as promising vector control tools. These traps are attractive to host-seeking mosquitoes, but their capture efficiency is low. It has been hypothesized that the lack of short-range host cues such as heat and increased local humidity often prevents mosquitoes from getting close enough to get caught; this lack might even trigger avoidance manoeuvres near the capture region.</p> <p><b>Methods:</b> We tested how close-range host cues affect the flight behaviour of <i>Anopheles </i>female malaria mosquitoes around odour-baited traps, and how this affects trap capture performance. For this, a novel counter-flow odour-baited trap was developed, the M-Tego. In addition to the usual CO<sub>2</sub> and odour-blend, this trap can provide the short-range host cues heat and humidity. By systematically adding or removing these two cues, we tested how this affected the trap capture percentages and flight behaviour. We first compared capture percentages of the M-Tego with and without short-range host cues to the BG-Suna trap, in both laboratory and semi-field testing. Then, we used machine-vision techniques to track the three-dimensional flight movements of mosquitoes around the M-Tego.</p> <p><b>Results:</b> With heat and humidity present, the M-Tego captured significantly more mosquitoes as capture percentages almost doubled. Comparing the flight behaviour around the M-Tego with variable close-range host cues showed that when these cues were present, flying mosquitoes were more attracted to the trap and spent more time there. In addition, we found that the M-Tego has a better capture mechanism than the BG-Suna, most likely because it does not elicit previously-observed upward avoiding manoeuvres.</p> <p><b>Conclusions:</b> Our results suggest that adding heat and humidity to an odour-baited trap lures more mosquitoes close to the trap and retains them there longer, resulting in higher capture performance. These findings support the development of control tools for fighting mosquito-borne diseases such as malaria.</p>
Fig. 2 in Traps Baited with Isopropanol Attract the American Carrion Beetle,Necrophila americana(L.) (Coleoptera: Silphidae)
Fig. 2. The trap used in our study. A = harness, B = yellow strap, C = square openings (the third opening is placed on the opposite side of the bottle), D = maximum level of the bait.
Fig. 1 in Traps Baited with Isopropanol Attract the American Carrion Beetle,Necrophila americana(L.) (Coleoptera: Silphidae)
Fig. 1. Three habitats used in which isopropanol-baited traps were placed to attract Necrophila americana. A) Plot 1 – unmanaged apple trees, B) Plot 2 – Missouri State University arboretum, C) Plot 3 – Missouri State University experimental vineyard, D) Plot 3 separated from Plot 1 (the row of trees in the background) by a 30-m wide clover field.
Figs. 32–34. Trap efficiency. 32 in The Dung- and Carrion-Feeding Scarabs (Coleoptera: Scarabaeoidea) of an Amazonian Blackwater Rainforest: Results of a Continuous, 56-Week, Baited-PitfallTrap Study
Figs. 32–34. Trap efficiency. 32) Quantity. Light-colored bars represent realized number of scarabaeoids taken in each trap expressed as a mean percentage for the bait type and preservative compared to the expected catch (= the mean percentage of all traps with that bait type and preservative (100%)). Dark-colored bars represent realized number of scarabaeoids taken in each trap expressed as a mean percentage for bait type only compared to the expected catch (the mean percentage of all traps with that bait type (100%)) if all variables between traps were equal. Nearly all of the traps performed well with the exceptions of traps 3 and 15 (dung) and 19 and 20 (carrion); 33) Species richness. Light-colored bars represent realized number of scarabaeoid species taken in each trap expressed as a mean percentage for the bait type and preservative compared to the expected catch. Dark-colored bars represent realized number of species taken in each trap expressed as a mean percentage for bait type only compared to the expected catch if all variables between traps were equal. Nearly all of the traps performed equally well; 34) Richness of only the "common" scarabaeoid species. Light-colored bars represent realized number of "common species" (those in excess of 0.005% of the total number of individuals) taken in each trap expressed as a mean percentage for the bait type and preservative compared to the expected catch. Dark-colored bars represent realized number of "common species" taken in each trap expressed as a mean percentage for only the bait type compared to the expected catch if all variables between traps were equal. Nearly all of the traps performed equally well in capturing the "common species".
Figs. 14–15. Trap design. 14 in The Dung- and Carrion-Feeding Scarabs (Coleoptera: Scarabaeoidea) of an Amazonian Blackwater Rainforest: Results of a Continuous, 56-Week, Baited-PitfallTrap Study
Figs. 14–15. Trap design. 14) Completed trap with rain cover in position; 15) Close-up showing attachment of bait vial inside lip of collecting bottle.
Figs. 11–13. Trap design. 11 in The Dung- and Carrion-Feeding Scarabs (Coleoptera: Scarabaeoidea) of an Amazonian Blackwater Rainforest: Results of a Continuous, 56-Week, Baited-PitfallTrap Study
Figs. 11–13. Trap design. 11) Pitfall trap components: PVC pipe in the ground, collecting bottle with bait vial attached just inside of opening, soil cover, rain cover; 12) Collecting bottle placed inside of PVC pipe so that the lip of the bottle is flush with the surface of the ground; 13) Soil cover placed over lip of collecting bottle.
Fig. 5. Violin plots for height experiment 2 in A Baited Time Sorting Pitfall Trap Allowing More Temporal Fidelity of Dung Beetle (Coleoptera: Scarabaeidae) Activity
Fig. 5. Violin plots for height experiment 2 comparing: A) Abundance per trap type, B) Species richness per trap type, C) Shannon index for each trap type, D) Pielou evenness per trap type.
Fig. 2 in A Baited Time Sorting Pitfall Trap Allowing More Temporal Fidelity of Dung Beetle (Coleoptera: Scarabaeidae) Activity
Fig. 2. The three trapping types in the field with muslin-wrapped cow dung baits. A) Ground pan trap, B) Raised pan trap, and C) Time sorting pitfall trap.
Fig. 1 in A Baited Time Sorting Pitfall Trap Allowing More Temporal Fidelity of Dung Beetle (Coleoptera: Scarabaeidae) Activity
Fig. 1. Components of the TSPT. A) Internal view of the electronics, B) Carousel with vials in the 20 slots (note that lids are normally off when trap operational), C) Marine plywood, funnel, fake turf, and wire mesh, which make up the top of the TSPT, and D) TSPT set up with fake turf covering marine plywood with funnel and metal mesh in place. For field deployment it is recommended to raise to mesh slightly, as seen here with the 3 pieces of scrap pallet wood (1.5 cm in height).
Figure 1. Baited trap made with 500 in Is the capture success of orchid bees %Hymenoptera, Apoidea) influenced by different baited trap designs? A case study from southern Brazil
Figure 1. Baited trap made with 500 mL bottle; left landing platform not shown to indicate position of the entrance hole.
FIGURE 2 in Use of colored fruit-baited traps for trapping Cerambycidae (Coleoptera: Chrysomeloidea) reveals six new records for the state of Rondônia, southwestern Brazilian Amazon
FIGURE 2. (a) Colored traps used to collect cerambycid beetles in this study; (b) the blue, (c) yellow, (d) red, and (e) transparent traps installed in the understory (4.5 m height) of the Amazon rainforest.
FIGURE 1 in Use of colored fruit-baited traps for trapping Cerambycidae (Coleoptera: Chrysomeloidea) reveals six new records for the state of Rondônia, southwestern Brazilian Amazon
FIGURE 1. (a) Geographic location of the sampling sites of cerambycid beetles in the southwestern Brazilian Amazon, municipality of Colorado do Oeste, Rondônia, northern Brazil; (b) Habitat (Amazon rainforest fragment) where cerambycids were sampled.
FIGURES 3–8 in Use of colored fruit-baited traps for trapping Cerambycidae (Coleoptera: Chrysomeloidea) reveals six new records for the state of Rondônia, southwestern Brazilian Amazon
FIGURES 3–8. Dorsal habitus of Cerambycidae species recorded for the first time in Rondônia, northern Brazil. (3) Sphallotrichus bidens (Fabricius, 1801); (4) Cosmoplatidius abare Napp & Martins, 2006; (5) Deltosoma fernandezi Dalens & Giuglaris, 2014; (6) Chydarteres dimidiatus dimidiatus (Fabricius, 1787); (7) Corimbion nigroapicatum Martins, 1970; and (8) Neolampedusa obliquator (Fabricius, 1801).
Figure 4 in Terrestrial macroinvertebrates captured with a baited ramp-pitfall trap from five limestone caves in North Alabama and Georgia (USA) and their association with soil organic matter
Figure 4. Regression analyses of species richness from the various distance intervals in Howard's Waterfall Cave, Georgia.
Figure 6 in Terrestrial macroinvertebrates captured with a baited ramp-pitfall trap from five limestone caves in North Alabama and Georgia (USA) and their association with soil organic matter
Figure 6. Regression analyses of total Collembola abundance from the various distance intervals in Howard's Waterfall Cave, Georgia.
Figure 3 in Terrestrial macroinvertebrates captured with a baited ramp-pitfall trap from five limestone caves in North Alabama and Georgia (USA) and their association with soil organic matter
Figure 3. Regression of total invertebrate abundance and % total organic matter (% TOM) from the various distance interval in Cave Springs Cave, Alabama.
Figure 1 in Terrestrial macroinvertebrates captured with a baited ramp-pitfall trap from five limestone caves in North Alabama and Georgia (USA) and their association with soil organic matter
Figure 1. Our ramp-pitfall trap without styrofoam plate and bait. Plastic container dimensions (width and height 18 cm), openings to container (width 8 cm, height 7 cm), ramps (8 cm, 19 cm, and slanted side 18 cm).
Figure 2 in Terrestrial macroinvertebrates captured with a baited ramp-pitfall trap from five limestone caves in North Alabama and Georgia (USA) and their association with soil organic matter
Figure 2. Regression of total invertebrate abundance and % total organic matter (% TOM) from the various distance intervals in Anvil Cave, Alabama.
Figure 5 in Terrestrial macroinvertebrates captured with a baited ramp-pitfall trap from five limestone caves in North Alabama and Georgia (USA) and their association with soil organic matter
Figure 5. Regression analyses of total invertebrate abundance from the various distance intervals in Howard's Waterfall Cave, Georgia.
FIGURE 5 in When unexpected guests come to eat: two new species of Phyllolabis Osten Sacken (Diptera: Limoniidae) collected with carrion-baited traps in the centre of the Iberian Peninsula
FIGURE 5. Ovipositor of Phyllolabis eiroae sp. nov. A. lateral view; B. dorsal view; C. ovipositor after cleared in KOH, indicating the spermathecae, lateral view; D. ovipositor after cleared in KOH, indicating the spermathecae, ventral view.
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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