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169 results for “soil mites”
FIG. 9. — Paratype Epidamaeus tenuisetosus n in Three new soil mites of the genus Epidamaeus (Acari, Oribatida, Damaeidae) from Mongolia
FIG. 9. — Paratype Epidamaeus tenuisetosus n. sp.; A, genu, tibia and tarsus of leg III (right, antiaxial aspect); B, trochanter and femur of leg III (right, antiaxial aspect); C, genu, tibia and tarsus of leg IV (right, antiaxial aspect); D, trochanter and femur of leg IV (right, antiaxial aspect). Scale bar: 100 µm.
FIG. 8. — Paratype Epidamaeus tenuisetosus n in Three new soil mites of the genus Epidamaeus (Acari, Oribatida, Damaeidae) from Mongolia
FIG. 8. — Paratype Epidamaeus tenuisetosus n. sp.; A, chelicera (right, antiaxial aspect); B, palp (right, antiaxial aspect); C, genu, tibia and tarsus of leg I (right, antiaxial aspect); D, trochanter and femur of leg I (right, antiaxial aspect); E, genu, tibia and tarsus of leg II (right, antiaxial aspect); F, trochanter and femur of leg II (right, antiaxial aspect). Scale bar: 100 µm.
Figure 2 in Edaphic characteristics and environmental impact of rubber tree plantations on soil mite (Acari) communities
Figure 2 Abundance logarithmic transformation – logx (+1) of Gamasida (A) and Oribatida (B) major groups across the land use types. SF: secondary forests, R7: 7-year-old rubber plantations, R12: 12- year-old rubber plantations, R25: 25-year-old rubber plantations. N = 120; one-way ANOVA test,p
Figure 1 in New mite records (Acari: Mesostigmata Trombidiformes) from soil and vegetation of some Syrian citrus agrosystems
Figure 1 Variations in the shape of dorsal body setae in the Syrian specimens ofPseudobryobia nikitensis: a – prodorsal setae; b –sc1 seta; c – c1 seta; d –d1 seta.
Data from: Mitochondrial metagenomics reveals the ancient origin and phylodiversity of soil mites and provides a phylogeny of the Acari
<p>High-throughput DNA methods hold great promise for phylogenetic analysis of lineages that are difficult to study with conventional molecular and morphological approaches. The mites (Acari), and in particular the highly diverse soil-dwelling lineages, are among the least known branches of the metazoan Tree-of-Life. We extracted numerous minute mites from soils in an area of mixed forest and grassland in southern Iberia. Selected specimens representing the full morphological diversity were shotgun sequenced in bulk, followed by genome assembly of short reads from the mixture, which produced >100 mitochondrial genomes representing diverse acarine lineages. Phylogenetic analyses in combination with taxonomically limited mitogenomes available publicly resulted in plausible trees defining basal relationships of the Acari. Several critical nodes were supported by ancestral-state reconstructions of mitochondrial gene rearrangements. Molecular calibration placed the minimum age for the common ancestor of the superorder Acariformes, which includes most soil-dwelling mites, to the Cambrian-Ordovician (likely within 455–552 Mya), while the origin of the superorder Parasitiformes was placed later in the Carboniferous-Permian. Most family-level taxa within the Acariformes were dated to the Jurassic and Triassic. The ancient origin of Acariformes and the early diversification of major extant lineages linked to the soil are consistent with a pioneering role for mites in building the earliest terrestrial ecosystems.</p>
Data from: New perspectives on soil animal trophic ecology through the lens of C and N stable isotope ratios of oribatid mites
<p>Knowledge of the trophic ecology of soil animals is important for understanding their high alpha diversity as well as their functional role in soil food webs and systems. In the last 20 years, the analysis of natural variations in stable isotope ratios (<sup>15</sup>N/<sup>14</sup>N, <sup>13</sup>C/<sup>12</sup>C) has revolutionized our view on soil animal trophic ecology. Here, we review the state of the art of the trophic ecology of a highly abundant and diverse soil animal taxon, oribatid mites (Oribatida), investigated by stable isotope analyses. The review is based on 25 papers reporting stable isotope data of 292 oribatid mite taxa from 30 different sites. Four main findings emerged. (1) Oribatid mites cluster into six trophic groups, i.e. moss feeders, lichen feeders, primary decomposers, fungal feeders/secondary decomposers, predators/scavengers and marine algal feeders, plus one additional group, which incorporates CaCO<sub>3</sub> in their cuticle for defence but still belongs to the fungal feeders/secondary decomposers group. (2) Of the 292 species studied 43.7% were classified as fungal feeders/secondary decomposers, 27.0% as primary decomposers and 15.7% as predators/scavengers, only few species include CaCO<sub>3</sub> into their skeleton (6.1%), feed on lichens (4.9%), mosses (2.1%) or marine algae (0.7%). (3) In about one-third of the species studied the trophic niche was constant or varied little between sites or habitats, but in two-thirds of the species, their trophic niche varied between habitats, with some species even shifting trophic levels, indicating trophic plasticity. (4) When aggregated at higher taxonomic level oribatid mite species clustered in only three instead of six trophic groups. This indicates that species within the same high-level taxon often belong to different trophic groups, for example, because feeding habits evolved convergently. Therefore, to accurately reflect the trophic ecology of oribatid mites their stable isotope signatures need to be analysed at the species level. However, stable isotope analyses also have limitations, e.g. feeding on bacteria and fungi cannot be separated, and the same is true for feeding on ectomycorrhizal and arbuscular mycorrhizal fungi. Other methods such as fatty acid, amino acid and molecular gut content analyses as well as microbiome analyses may complement stable isotope studies and resolve oribatid mite trophic niche differentiation at a higher resolution. This will contribute to a better understanding of the local coexistence of large numbers of species in soil. Finally, we provide perspectives on how to integrate microarthropods into soil food webs using stable isotope and other methods allowing deeper insight into their<br>trophic structure.</p>
Figure 1 Study area with 10 in Know your campus: salient research potential of prostigmatic soil mite fauna (Acariformes: Prostigmata, Endeostigmata) within university campus area
Figure 1 Study area with 10 sampling localities (nos. 1-10) and its border marked by black line.
Figure 1 in Diversity of soil mite communities in different habitats of Saskhori quarries, Georgia
Figure 1. Map of soil sampling locations on Saskhori quarries.
Fig. 4 in A Study On The Feeding Biology Of Soil Oribatid Mite Papillacarus (Papillacarus) Elongatus (Acari, Lohmanniidae)
Fig. 4. Mouth parts of P. (P.) elongatus. a — chelicera; b — rutellum. Scale 50μm
FIGURE 8 in The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East
FIGURE 8: Parachipteria punctata (Nicolet, 1855): A – Dorsal view of idiosoma, legs omitted; B – Dorso-frontal view of prodorsum; C – Posterior view of opisthosoma; D – Tutorium, right, lateral view; E – Pedotectum I, right, lateral view; F – Sensillus and bothridium, lateral view.
FIGURE 7 in The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East
FIGURE 7: Parachipteria bella (Sellnick, 1928): A – Dorsal view of idiosoma, legs omitted; B – Lamellar cusps; C – Ventral view of idiosoma, legs omitted; D – Porose areas and some setae of notogaster; E – Tutorium, right, lateral view; F – Rostral seta, right.
FIGURE 6 in The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East
FIGURE 6: Parachipteria nivalis (Hammer, 1952): A – Dorsal view of idiosoma, legs omitted; B – Ventral view of idiosoma, legs omitted; C – Tutorium, right, lateral view; D – Pedotectum I, right, lateral view; E – Sensillus and bothridium, lateral view.
FIGURE 4 in The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East
FIGURE 4: Anachipteria deficiens Grandjean, 1932: A – Dorsal view of idiosoma, legs omitted; B – Lamellar cusps; C – Leg I, left, antiaxial view.
FIGURE 3 in The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East
FIGURE 3: Achipteria nitens (Nicolet, 1855): A – Dorsal view of idiosoma, legs omitted; B – Lamellar cusps; C – Rostral seta, right; D – Sensillus and bothridium, lateral view; E – Ventral view of idiosoma, legs omitted; F – Tutorium, right, lateral view; G – Some of notogastral setae, opisthosomal gland opening and lyrifissures, dorso-lateral view.
FIGURE 5 in The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East
FIGURE 5: Anachipteria deficiens Grandjean, 1932: A – Leg IV, left, antiaxial view; B – Ventral view of idiosoma, legs omitted; C – Prodor-
FIGURE 2 in The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East
FIGURE 2: Achipteria coleoptrata (Linnaeus, 1758): A – Part of prodorsum and anterior part of notogaster; B – Ano-genital region; C – Pteromorph, dorsal view, after dissection.
FIGURE 1 in The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East
FIGURE 1: Achipteria coleoptrata (Linnaeus, 1758): A – Dorsal view of idiosoma, legs omitted; B – Dorso-frontal view of lamellar cusps; C – Ventral view of idiosoma, legs omitted; D – Tutorium, right, lateral view; E – Rostral seta, right.
Data from: New perspectives on soil animal trophic ecology through the lens of C and N stable isotope ratios of oribatid mites
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Data from: Mitochondrial metagenomics reveals the ancient origin and phylodiversity of soil mites and provides a phylogeny of the Acari
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FIGURES 6–10 in Soil-inhabiting mites of the family Laelapidae (Acari: Mesostigmata) from Assiut Governorate, Egypt
FIGURES 6–10. Cosmolaelaps longus (Hafez, Elbadry & Nasr, 1982), female. 6, dorsal idiosoma; 7, ventral idiosoma; 8, subcapitulum; 9, epistome; 10, chelicera.
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