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167 results for “Predatory mites”
Figure 1 in Use of predatory mites in commercial biocontrol: current status and future prospects
Figure 1 Development of the moisture content in potting soil samples in Berlese-Tullgren funnels
Figure 2 in Use of predatory mites in commercial biocontrol: current status and future prospects
Figure 2 Number of Macrocheles robustuluscollected in the collection vials without prey mites (A)
Figure 3 in Use of predatory mites in commercial biocontrol: current status and future prospects
Figure 3 Number of Gaeolaelaps aculeifercollected in the collection vials without prey mites (A)
FIGURE 2 in Does Artificial Selection For Fixed Prey Preference Affect Learning In A Predatory Mite? Experiments To Unravel Mechanisms Underlying Polyphagy In Hypoaspis Aculeifer
FIGURE 2: Preference of T-line predators, expressed as percentages (horizontal bars) of individuals choosing prey T (0 to 100%) or prey R (0 to -100%) for four replicates and three starvation treatments: (a) – in presence of odour from prey R, (b) – in presence of odour from prey T or (c) – in absence of prey odour. Numbers shown left and right of the horizontal bars represent number of predators choosing prey R (left) or prey T (right) for each replicate experiment.
FIGURE 1 in Does Artificial Selection For Fixed Prey Preference Affect Learning In A Predatory Mite? Experiments To Unravel Mechanisms Underlying Polyphagy In Hypoaspis Aculeifer
FIGURE 1: Preference of R-line predators, expressed as percentages (horizontal bars) of individuals choosing prey T (0 to 100%) or prey R (0 to -100%) for four replicates and three starvation treatments: (a) – in presence of odour from prey R or (b) – prey T or (c) – in absence of prey odour. Numbers shown left and right of the horizontal bars represent number of predators choosing prey R (left) or prey T (right) for each replicate experiment.
FIGURE 3 in Phytophagous and predatory mites on olive trees in Tunisia. Catalogue, description of one new species and key for identification (Acari, Eriophyidae, Tetranychidae, Tenuipalpidae and Phytoseiidae)
FIGURE 3: Calyx of the spermatheca (a), Chelicera (b) and Macrosetae on leg IV (c) of the female of Typhlodromus (Anthoseius) mathieui n. sp.
Figure 1 in Diversity and distribution of phytophagous and predatory mites on rosehip (Rosa canina L.) (Rosaceae) in Ankara, Turkey
Figure 1. Ankara province (A: Sampling areas).
Data from: Host egg volatiles are involved in brood parasitism in predatory mites
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FIGURE 8 in New species of predatory mites (Acari: Prostigmata: Cunaxidae) for southern Brazil
FIGURE 8. Photographs of the two new species of Cunaxidae. A—Cunaxoides lajeadensis sp. nov. female; B—Lupaeus waldumirus sp. nov., female.
FIGURE 3 in New species of predatory mites (Acari: Prostigmata: Cunaxidae) for southern Brazil
FIGURE 3. Cunaxoides lajeadensis sp. nov. female. Gnathosoma-A. Subcapitulum and palp ventral view; B. Dorsal view of the chelicera.
FIGURE 7 in New species of predatory mites (Acari: Prostigmata: Cunaxidae) for southern Brazil
FIGURE 7. Cunaxoides lajeadensis sp. nov., male phase tritonymph. Dorsal view of the ecdysial line, with phase contrast.
FIGURE 10 in New species of predatory mites (Acari: Prostigmata: Cunaxidae) for southern Brazil
FIGURE 10. Lupaeus waldumirus sp. nov., female. Gnathosoma—A. Subcapitulum and palp ventral view; B. Chelicera dorsal view.
Data from: Prey exploitation and dispersal strategies vary among natural populations of a predatory mite
When predators commonly overexploit local prey populations, dispersal drives the dynamics in local patches, which together form a metapopulation. Two extremes in a continuum of dispersal strategies are distinguished: the "Killer" strategy, where predators only start dispersing when all prey are eliminated, and the "Milker" strategy, in which predator dispersal occurs irrespective of prey availability. Theory shows that the Milker strategy is not evolutionarily stable if local populations are well connected by dispersal. Using strains of the predatory mite Phytoseiulus persimilis, collected from 11 native populations from coastal areas in Turkey and Sicily, we investigated whether these two strategies occur in nature. In small wind tunnels, we measured dispersal rates and population dynamics of all populations in a system consisting of detached rose leaves, spider mites (Tetranychus urticae) as prey, and P. persimilis. We found significant variation in the exploitation and dispersal strategies among predator populations, but none of the collected strains showed the extreme Killer or Milker strategy. The results suggest that there is genetic variation for prey exploitation and dispersal strategies. Thus, different dispersal strategies in the Milker–Killer continuum may be selected for under natural conditions. This may affect the predator–prey dynamics in local populations and is likely to determine persistence of predator–prey systems at the metapopulation level.
FIGURE 1 in Predatory mites from crops and pastures in South Africa: potential natural enemies of redlegged earth mite Halotydeus destructor (Acari: Penthaleidae)
FIGURE 1. Map of South Africa showing sites from which predatory mites were collected (circles) and reference localities (squares).
FIGURES 48–53 in Predatory mites from crops and pastures in South Africa: potential natural enemies of redlegged earth mite Halotydeus destructor (Acari: Penthaleidae)
FIGURES 48–53. Rhagidia meyerae sp. nov., female. 48. dorsal idiosoma; 49. ventral idiosoma; 50 chelicera; 51. palp tibiotarsus and genu; 52. distal end of tarsus I; 53. distal end of tarsus II. Scale bar = 100 µm for 48, 49, 80 µm for 50, 51, 52, 53.
FIGURES 29–33 in Predatory mites from crops and pastures in South Africa: potential natural enemies of redlegged earth mite Halotydeus destructor (Acari: Penthaleidae)
FIGURES 29–33. Gamasiphoides lootsi sp. nov., female. 29. dorsal idiosoma; 30. ventral idiosoma; 31. epistome; 32. chelicera; 33. hypostome. Scale bar = 100 µm for 29, 30, 60 µm for 31, 32, 33.
FIGURE 54 in Predatory mites from crops and pastures in South Africa: potential natural enemies of redlegged earth mite Halotydeus destructor (Acari: Penthaleidae)
FIGURE 54. Rhagidia meyerae sp. nov., female. Epimeral setae on coxae I, II, III. Scale bar = 100 µm.
FIGURE 9 in Predatory mites from crops and pastures in South Africa: potential natural enemies of redlegged earth mite Halotydeus destructor (Acari: Penthaleidae)
FIGURE 9. Bdellodes edentata sp. nov., female, coxa I and integument between coxa I and base of gnathosoma. cx1 = coxa I. Scale bar = 100 µm.
FIGURE 8 in Predatory mites from crops and pastures in South Africa: potential natural enemies of redlegged earth mite Halotydeus destructor (Acari: Penthaleidae)
FIGURE 8. Bdellodes edentata sp. nov., female, dorsal integument. oo = anterior sensillum; po = posterior sensillum; mps = median propodosomal seta. Scale bar = 100 µm.
FIGURES 26–28 in Predatory mites from crops and pastures in South Africa: potential natural enemies of redlegged earth mite Halotydeus destructor (Acari: Penthaleidae)
FIGURES 26–28. Macrocheles propinquus sp. nov., male. 26. chelicera; 27. tibia, genu and femur of leg II; 28. trochanter, femur and genu of leg IV. Scale bar = 100 µm for 27, 28, 80 µm for 26.
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